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# Remove the line below if you want to inherit .editorconfig settings from higher directories
root = true
# C# files
[*.cs]
#### Core EditorConfig Options ####
# Indentation and spacing
indent_size = 3
indent_style = tab
tab_width = 3
# New line preferences
end_of_line = crlf
insert_final_newline = false
#### .NET Coding Conventions ####
# Organize usings
dotnet_separate_import_directive_groups = false
dotnet_sort_system_directives_first = true
file_header_template = unset
# this. and Me. preferences
dotnet_style_qualification_for_event = false
dotnet_style_qualification_for_field = false
dotnet_style_qualification_for_method = false
dotnet_style_qualification_for_property = false
# Language keywords vs BCL types preferences
dotnet_style_predefined_type_for_locals_parameters_members = true
dotnet_style_predefined_type_for_member_access = true
# Parentheses preferences
dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity
dotnet_style_parentheses_in_other_binary_operators = always_for_clarity
dotnet_style_parentheses_in_other_operators = never_if_unnecessary
dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity
# Modifier preferences
dotnet_style_require_accessibility_modifiers = for_non_interface_members
# Expression-level preferences
dotnet_style_coalesce_expression = true
dotnet_style_collection_initializer = true
dotnet_style_explicit_tuple_names = true
dotnet_style_namespace_match_folder = true
dotnet_style_null_propagation = true
dotnet_style_object_initializer = true
dotnet_style_operator_placement_when_wrapping = beginning_of_line
dotnet_style_prefer_auto_properties = true
dotnet_style_prefer_compound_assignment = true
dotnet_style_prefer_conditional_expression_over_assignment = true
dotnet_style_prefer_conditional_expression_over_return = true
dotnet_style_prefer_foreach_explicit_cast_in_source = when_strongly_typed
dotnet_style_prefer_inferred_anonymous_type_member_names = true
dotnet_style_prefer_inferred_tuple_names = true
dotnet_style_prefer_is_null_check_over_reference_equality_method = true
dotnet_style_prefer_simplified_boolean_expressions = true
dotnet_style_prefer_simplified_interpolation = true
# Field preferences
dotnet_style_readonly_field = true
# Parameter preferences
dotnet_code_quality_unused_parameters = all
# Suppression preferences
dotnet_remove_unnecessary_suppression_exclusions = none
# New line preferences
dotnet_style_allow_multiple_blank_lines_experimental = false
dotnet_style_allow_statement_immediately_after_block_experimental = false
#### C# Coding Conventions ####
# var preferences
csharp_style_var_elsewhere = true
csharp_style_var_for_built_in_types = true
csharp_style_var_when_type_is_apparent = true
# Expression-bodied members
csharp_style_expression_bodied_accessors = true
csharp_style_expression_bodied_constructors = false
csharp_style_expression_bodied_indexers = true
csharp_style_expression_bodied_lambdas = true
csharp_style_expression_bodied_local_functions = false
csharp_style_expression_bodied_methods = false
csharp_style_expression_bodied_operators = false
csharp_style_expression_bodied_properties = true
# Pattern matching preferences
csharp_style_pattern_matching_over_as_with_null_check = true
csharp_style_pattern_matching_over_is_with_cast_check = true
csharp_style_prefer_extended_property_pattern = true
csharp_style_prefer_not_pattern = true
csharp_style_prefer_pattern_matching = true
csharp_style_prefer_switch_expression = true
# Null-checking preferences
csharp_style_conditional_delegate_call = true
# Modifier preferences
csharp_prefer_static_local_function = true
csharp_preferred_modifier_order = public,private,protected,internal,file,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,required,volatile,async
csharp_style_prefer_readonly_struct = true
# Code-block preferences
csharp_prefer_braces = when_multiline
csharp_prefer_simple_using_statement = true
csharp_style_namespace_declarations = file_scoped
csharp_style_prefer_method_group_conversion = true
csharp_style_prefer_top_level_statements = true
# Expression-level preferences
csharp_prefer_simple_default_expression = true
csharp_style_deconstructed_variable_declaration = true
csharp_style_implicit_object_creation_when_type_is_apparent = true
csharp_style_inlined_variable_declaration = true
csharp_style_prefer_index_operator = true
csharp_style_prefer_local_over_anonymous_function = true
csharp_style_prefer_null_check_over_type_check = true
csharp_style_prefer_range_operator = true
csharp_style_prefer_tuple_swap = true
csharp_style_prefer_utf8_string_literals = true
csharp_style_throw_expression = true
csharp_style_unused_value_assignment_preference = discard_variable
csharp_style_unused_value_expression_statement_preference = discard_variable
# 'using' directive preferences
csharp_using_directive_placement = outside_namespace
# New line preferences
csharp_style_allow_blank_line_after_colon_in_constructor_initializer_experimental = true
csharp_style_allow_blank_lines_between_consecutive_braces_experimental = false
csharp_style_allow_embedded_statements_on_same_line_experimental = false
#### C# Formatting Rules ####
# New line preferences
csharp_new_line_before_catch = true
csharp_new_line_before_else = true
csharp_new_line_before_finally = true
csharp_new_line_before_members_in_anonymous_types = true
csharp_new_line_before_members_in_object_initializers = true
csharp_new_line_before_open_brace = all
csharp_new_line_between_query_expression_clauses = true
# Indentation preferences
csharp_indent_block_contents = true
csharp_indent_braces = false
csharp_indent_case_contents = true
csharp_indent_case_contents_when_block = true
csharp_indent_labels = one_less_than_current
csharp_indent_switch_labels = true
# Space preferences
csharp_space_after_cast = false
csharp_space_after_colon_in_inheritance_clause = true
csharp_space_after_comma = true
csharp_space_after_dot = false
csharp_space_after_keywords_in_control_flow_statements = true
csharp_space_after_semicolon_in_for_statement = true
csharp_space_around_binary_operators = before_and_after
csharp_space_around_declaration_statements = false
csharp_space_before_colon_in_inheritance_clause = true
csharp_space_before_comma = false
csharp_space_before_dot = false
csharp_space_before_open_square_brackets = false
csharp_space_before_semicolon_in_for_statement = false
csharp_space_between_empty_square_brackets = false
csharp_space_between_method_call_empty_parameter_list_parentheses = false
csharp_space_between_method_call_name_and_opening_parenthesis = false
csharp_space_between_method_call_parameter_list_parentheses = false
csharp_space_between_method_declaration_empty_parameter_list_parentheses = false
csharp_space_between_method_declaration_name_and_open_parenthesis = false
csharp_space_between_method_declaration_parameter_list_parentheses = false
csharp_space_between_parentheses = false
csharp_space_between_square_brackets = false
# Wrapping preferences
csharp_preserve_single_line_blocks = true
csharp_preserve_single_line_statements = false
#### Naming styles ####
# Naming rules
dotnet_naming_rule.interface_should_be_begins_with_i.severity = suggestion
dotnet_naming_rule.interface_should_be_begins_with_i.symbols = interface
dotnet_naming_rule.interface_should_be_begins_with_i.style = begins_with_i
dotnet_naming_rule.types_should_be_pascal_case.severity = suggestion
dotnet_naming_rule.types_should_be_pascal_case.symbols = types
dotnet_naming_rule.types_should_be_pascal_case.style = pascal_case
dotnet_naming_rule.non_field_members_should_be_pascal_case.severity = suggestion
dotnet_naming_rule.non_field_members_should_be_pascal_case.symbols = non_field_members
dotnet_naming_rule.non_field_members_should_be_pascal_case.style = pascal_case
# Symbol specifications
dotnet_naming_symbols.interface.applicable_kinds = interface
dotnet_naming_symbols.interface.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
dotnet_naming_symbols.interface.required_modifiers =
dotnet_naming_symbols.types.applicable_kinds = class, struct, interface, enum
dotnet_naming_symbols.types.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
dotnet_naming_symbols.types.required_modifiers =
dotnet_naming_symbols.non_field_members.applicable_kinds = property, event, method
dotnet_naming_symbols.non_field_members.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
dotnet_naming_symbols.non_field_members.required_modifiers =
# Naming styles
dotnet_naming_style.pascal_case.required_prefix =
dotnet_naming_style.pascal_case.required_suffix =
dotnet_naming_style.pascal_case.word_separator =
dotnet_naming_style.pascal_case.capitalization = pascal_case
dotnet_naming_style.begins_with_i.required_prefix = I
dotnet_naming_style.begins_with_i.required_suffix =
dotnet_naming_style.begins_with_i.word_separator =
dotnet_naming_style.begins_with_i.capitalization = pascal_case

@ -0,0 +1,69 @@

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@ -0,0 +1,50 @@
using System.Collections.Immutable;
using Connected.Entities;
using Connected.Entities.Storage;
namespace Connected.ServiceModel.Client.Data;
internal sealed class AggregatedCommandBuilder<TEntity>
{
public StorageOperation? Build(TEntity entity)
{
if (entity is not IEntity ie)
throw new ArgumentException(nameof(entity));
switch (ie.State)
{
case State.New:
return BuildInsert(ie);
case State.Default:
return BuildUpdate(ie);
case State.Deleted:
return BuildDelete(ie);
default:
throw new NotSupportedException();
}
}
public List<StorageOperation> Build(ImmutableArray<TEntity> entities)
{
var result = new List<StorageOperation>();
foreach (var entity in entities)
result.Add(Build(entity));
return result;
}
private StorageOperation? BuildInsert(IEntity entity)
{
return new InsertCommandBuilder().Build(entity);
}
private StorageOperation? BuildUpdate(IEntity entity)
{
return new UpdateCommandBuilder().Build(entity);
}
private StorageOperation? BuildDelete(IEntity entity)
{
return new DeleteCommandBuilder().Build(entity);
}
}

@ -0,0 +1,15 @@
using Connected.Annotations;
using Connected.ServiceModel.Client.Data.Remote;
using Microsoft.Extensions.DependencyInjection;
[assembly: MicroService(MicroServiceType.Provider)]
namespace Connected.ServiceModel.Client.Data;
internal sealed class Boot : Startup
{
protected override void OnConfigureServices(IServiceCollection services)
{
services.AddScoped<RemoteTableService>();
}
}

@ -0,0 +1,206 @@
using System.Data;
using System.Reflection;
using System.Text;
using Connected.Entities;
using Connected.Entities.Annotations;
using Connected.Entities.Storage;
using Connected.Interop;
namespace Connected.ServiceModel.Client.Data;
internal abstract class CommandBuilder
{
private readonly List<IStorageParameter> _parameters;
private readonly List<PropertyInfo> _whereProperties;
private List<PropertyInfo> _properties;
protected CommandBuilder()
{
_parameters = new List<IStorageParameter>();
_whereProperties = new List<PropertyInfo>();
Text = new StringBuilder();
}
public StorageOperation? Build(IEntity entity)
{
Entity = entity;
if (TryGetExisting(out StorageOperation? existing))
{
/*
* We need to rebuild an instance since StorageOperation
* is immutable
*/
var result = new StorageOperation
{
CommandText = existing.CommandText,
CommandTimeout = existing.CommandTimeout,
CommandType = existing.CommandType,
Concurrency = existing.Concurrency
};
if (result.Parameters is null)
return result;
foreach (var parameter in result.Parameters)
{
if (parameter.Direction == ParameterDirection.Input)
{
if (ResolveProperty(parameter.Name) is PropertyInfo property)
{
result.AddParameter(new StorageParameter
{
Value = GetValue(property),
Name = parameter.Name,
Type = parameter.Type,
Direction = parameter.Direction
});
}
}
}
return result;
}
Schema = Entity.GetSchemaAttribute();
return OnBuild();
}
protected List<PropertyInfo> Properties => _properties ??= GetProperties();
protected List<PropertyInfo> WhereProperties => _whereProperties;
protected string CommandText => Text.ToString();
protected IEntity Entity { get; private set; }
protected SchemaAttribute Schema { get; private set; }
private StringBuilder Text { get; set; }
protected abstract StorageOperation OnBuild();
protected abstract bool TryGetExisting(out StorageOperation? result);
protected List<IStorageParameter> Parameters => _parameters;
protected void Write(string text)
{
Text.Append(text);
}
protected void Write(char text)
{
Text.Append(text);
}
protected void WriteLine(string text)
{
Text.AppendLine(text);
}
protected void Trim()
{
for (var i = Text.Length - 1; i >= 0; i--)
{
if (!Text[i].Equals(',') && !Text[i].Equals('\n') && !Text[i].Equals('\r') && !Text[i].Equals(' '))
break;
if (i < Text.Length)
Text.Length = i;
}
}
protected virtual List<PropertyInfo> GetProperties()
{
return Interop.Properties.GetImplementedProperties(Entity);
}
protected static string ColumnName(PropertyInfo property)
{
var dataMember = property.FindAttribute<MemberAttribute>();
return dataMember is null || string.IsNullOrEmpty(dataMember.Member) ? property.Name.ToCamelCase() : dataMember.Member;
}
protected static DbType ResolveDbType(PropertyInfo property)
{
return property.PropertyType.ToDbType();
}
protected object? GetValue(PropertyInfo property)
{
if (IsNull(property))
return "NULL";
return GetValue(property.GetValue(Entity), property.PropertyType.ToDbType());
}
private static object? GetValue(object value, DbType dbType)
{
switch (dbType)
{
case DbType.Binary:
if (value is byte[] bytes)
return Convert.ToBase64String(bytes);
else
return Convert.ToBase64String(Encoding.UTF8.GetBytes(value.ToString()));
default:
return value;
}
}
private bool IsNull(PropertyInfo property)
{
var result = property.GetValue(Entity);
if (result is null)
return true;
if (property.GetCustomAttribute<NullableAttribute>() is null)
return false;
var def = Types.GetDefault(property.PropertyType);
return TypeComparer.Compare(result, def);
}
protected StorageParameter CreateParameter(PropertyInfo property)
{
return CreateParameter(property, ParameterDirection.Input);
}
protected StorageParameter CreateParameter(PropertyInfo property, ParameterDirection direction)
{
var columnName = ColumnName(property);
var parameterName = $"@{columnName}";
var parameter = new StorageParameter
{
Direction = direction,
Name = parameterName,
Type = ResolveDbType(property),
Value = GetValue(property)
};
Parameters.Add(parameter);
return parameter;
}
private PropertyInfo ResolveProperty(string parameterName)
{
var propertyName = parameterName[1..];
var flags = BindingFlags.Public | BindingFlags.Instance | BindingFlags.NonPublic;
if (Entity.GetType().GetProperty(propertyName.ToPascalCase(), flags) is PropertyInfo property)
return property;
if (Entity.GetType().GetProperty(propertyName, flags) is PropertyInfo raw)
return raw;
return null;
}
}

@ -0,0 +1,17 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net7.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\..\..\connected.framework.servicemodel\src\Connected.ServiceModel\Connected.ServiceModel.csproj" />
<ProjectReference Include="..\..\..\connected.framework\src\Connected.Data\Connected.Data.csproj" />
<ProjectReference Include="..\..\..\connected.framework\src\Connected.Entities\Connected.Entities.csproj" />
<ProjectReference Include="..\..\..\connected.framework\src\Connected.Services\Connected.Services.csproj" />
<ProjectReference Include="..\Connected.ServiceModel.Client\Connected.ServiceModel.Client.csproj" />
</ItemGroup>
</Project>

@ -0,0 +1,17 @@
using Connected.Expressions.Languages;
using System.Data;
namespace Connected.ServiceModel.Client.Data;
internal sealed class CqlDataType : DataType
{
public CqlDataType(SqlDbType dbType, bool notNull, int length, short precision, short scale)
{
DbType = dbType;
NotNull = notNull;
Length = length;
Precision = precision;
Scale = scale;
}
public SqlDbType DbType { get; }
}

@ -0,0 +1,781 @@
using System.Linq.Expressions;
using Connected.Expressions;
using Connected.Expressions.Formatters;
using Connected.Expressions.Languages;
using Connected.Interop;
namespace Connected.ServiceModel.Client.Data;
/// <summary>
/// This is currently the same implementation as the default (TSql) formatter.
/// </summary>
internal sealed class CqlFormatter : SqlFormatter
{
public CqlFormatter(ExpressionCompilationContext context, QueryLanguage? language)
: base(language)
{
Context = context;
HideColumnAliases = true;
HideTableAliases = true;
UseBracketsInWhere = false;
}
public ExpressionCompilationContext Context { get; }
public static new string Format(ExpressionCompilationContext context, Expression expression)
{
return Format(context, expression, new CqlLanguage());
}
public static string Format(ExpressionCompilationContext context, Expression expression, QueryLanguage language)
{
var formatter = new CqlFormatter(context, language);
formatter.Visit(expression);
return formatter.ToString();
}
protected override void WriteAggregateName(string aggregateName)
{
if (string.Equals(aggregateName, "LongCount", StringComparison.Ordinal))
Write("COUNT_BIG");
else
base.WriteAggregateName(aggregateName);
}
protected override void WriteTableName(string tableSchema, string tableName)
{
Write(tableName);
}
protected override Expression VisitMemberAccess(MemberExpression m)
{
if (m.Member.DeclaringType == typeof(string))
{
switch (m.Member.Name)
{
case "Length":
Write("LEN(");
Visit(m.Expression);
Write(")");
return m;
}
}
else if (m.Member.DeclaringType == typeof(DateTime) || m.Member.DeclaringType == typeof(DateTimeOffset))
{
switch (m.Member.Name)
{
case "Day":
Write("DAY(");
Visit(m.Expression);
Write(")");
return m;
case "Month":
Write("MONTH(");
Visit(m.Expression);
Write(")");
return m;
case "Year":
Write("YEAR(");
Visit(m.Expression);
Write(")");
return m;
case "Hour":
Write("DATEPART(hour, ");
Visit(m.Expression);
Write(")");
return m;
case "Minute":
Write("DATEPART(minute, ");
Visit(m.Expression);
Write(")");
return m;
case "Second":
Write("DATEPART(second, ");
Visit(m.Expression);
Write(")");
return m;
case "Millisecond":
Write("DATEPART(millisecond, ");
Visit(m.Expression);
Write(")");
return m;
case "DayOfWeek":
Write("(DATEPART(weekday, ");
Visit(m.Expression);
Write(") - 1)");
return m;
case "DayOfYear":
Write("(DATEPART(dayofyear, ");
Visit(m.Expression);
Write(") - 1)");
return m;
}
}
return base.VisitMemberAccess(m);
}
protected override Expression VisitMethodCall(MethodCallExpression m)
{
if (m.Method.DeclaringType == typeof(string))
{
switch (m.Method.Name)
{
case "StartsWith":
Write("(");
Visit(m.Object);
Write(" LIKE ");
Visit(m.Arguments[0]);
Write(" + '%')");
return m;
case "EndsWith":
Write("(");
Visit(m.Object);
Write(" LIKE '%' + ");
Visit(m.Arguments[0]);
Write(")");
return m;
case "Contains":
Write("(");
Visit(m.Object);
Write(" LIKE '%' + ");
Visit(m.Arguments[0]);
Write(" + '%')");
return m;
case "Concat":
var args = m.Arguments;
if (args.Count == 1 && args[0].NodeType == ExpressionType.NewArrayInit)
args = ((NewArrayExpression)args[0]).Expressions;
for (var i = 0; i < args.Count; i++)
{
if (i > 0)
Write(" + ");
Visit(args[i]);
}
return m;
case "IsNullOrEmpty":
Write("(");
Visit(m.Arguments[0]);
Write(" IS NULL OR ");
Visit(m.Arguments[0]);
Write(" = '')");
return m;
case "ToUpper":
Write("UPPER(");
Visit(m.Object);
Write(")");
return m;
case "ToLower":
Write("LOWER(");
Visit(m.Object);
Write(")");
return m;
case "Replace":
Write("REPLACE(");
Visit(m.Object);
Write(", ");
Visit(m.Arguments[0]);
Write(", ");
Visit(m.Arguments[1]);
Write(")");
return m;
case "Substring":
Write("SUBSTRING(");
Visit(m.Object);
Write(", ");
Visit(m.Arguments[0]);
Write(" + 1, ");
if (m.Arguments.Count == 2)
Visit(m.Arguments[1]);
else
Write("8000");
Write(")");
return m;
case "Remove":
Write("STUFF(");
Visit(m.Object);
Write(", ");
Visit(m.Arguments[0]);
Write(" + 1, ");
if (m.Arguments.Count == 2)
Visit(m.Arguments[1]);
else
Write("8000");
Write(", '')");
return m;
case "IndexOf":
Write("(CHARINDEX(");
Visit(m.Arguments[0]);
Write(", ");
Visit(m.Object);
if (m.Arguments.Count == 2 && m.Arguments[1].Type == typeof(int))
{
Write(", ");
Visit(m.Arguments[1]);
Write(" + 1");
}
Write(") - 1)");
return m;
case "Trim":
Write("RTRIM(LTRIM(");
Visit(m.Object);
Write("))");
return m;
}
}
else if (m.Method.DeclaringType == typeof(DateTime))
{
switch (m.Method.Name)
{
case "op_Subtract":
if (m.Arguments[1].Type == typeof(DateTime))
{
Write("DATEDIFF(");
Visit(m.Arguments[0]);
Write(", ");
Visit(m.Arguments[1]);
Write(")");
return m;
}
break;
case "AddYears":
Write("DATEADD(YYYY,");
Visit(m.Arguments[0]);
Write(",");
Visit(m.Object);
Write(")");
return m;
case "AddMonths":
Write("DATEADD(MM,");
Visit(m.Arguments[0]);
Write(",");
Visit(m.Object);
Write(")");
return m;
case "AddDays":
Write("DATEADD(DAY,");
Visit(m.Arguments[0]);
Write(",");
Visit(m.Object);
Write(")");
return m;
case "AddHours":
Write("DATEADD(HH,");
Visit(m.Arguments[0]);
Write(",");
Visit(m.Object);
Write(")");
return m;
case "AddMinutes":
Write("DATEADD(MI,");
Visit(m.Arguments[0]);
Write(",");
Visit(m.Object);
Write(")");
return m;
case "AddSeconds":
Write("DATEADD(SS,");
Visit(m.Arguments[0]);
Write(",");
Visit(m.Object);
Write(")");
return m;
case "AddMilliseconds":
Write("DATEADD(MS,");
Visit(m.Arguments[0]);
Write(",");
Visit(m.Object);
Write(")");
return m;
}
}
else if (m.Method.DeclaringType == typeof(Decimal))
{
switch (m.Method.Name)
{
case "Add":
case "Subtract":
case "Multiply":
case "Divide":
case "Remainder":
Write("(");
VisitValue(m.Arguments[0]);
Write(" ");
Write(GetOperator(m.Method.Name));
Write(" ");
VisitValue(m.Arguments[1]);
Write(")");
return m;
case "Negate":
Write("-");
Visit(m.Arguments[0]);
Write("");
return m;
case "Ceiling":
case "Floor":
Write(m.Method.Name.ToUpper());
Write("(");
Visit(m.Arguments[0]);
Write(")");
return m;
case "Round":
if (m.Arguments.Count == 1)
{
Write("ROUND(");
Visit(m.Arguments[0]);
Write(", 0)");
return m;
}
else if (m.Arguments.Count == 2 && m.Arguments[1].Type == typeof(int))
{
Write("ROUND(");
Visit(m.Arguments[0]);
Write(", ");
Visit(m.Arguments[1]);
Write(")");
return m;
}
break;
case "Truncate":
Write("ROUND(");
Visit(m.Arguments[0]);
Write(", 0, 1)");
return m;
}
}
else if (m.Method.DeclaringType == typeof(Math))
{
switch (m.Method.Name)
{
case "Abs":
case "Acos":
case "Asin":
case "Atan":
case "Cos":
case "Exp":
case "Log10":
case "Sin":
case "Tan":
case "Sqrt":
case "Sign":
case "Ceiling":
case "Floor":
Write(m.Method.Name.ToUpper());
Write("(");
Visit(m.Arguments[0]);
Write(")");
return m;
case "Atan2":
Write("ATN2(");
Visit(m.Arguments[0]);
Write(", ");
Visit(m.Arguments[1]);
Write(")");
return m;
case "Log":
if (m.Arguments.Count == 1)
goto case "Log10";
break;
case "Pow":
Write("POWER(");
Visit(m.Arguments[0]);
Write(", ");
Visit(m.Arguments[1]);
Write(")");
return m;
case "Round":
if (m.Arguments.Count == 1)
{
Write("ROUND(");
Visit(m.Arguments[0]);
Write(", 0)");
return m;
}
else if (m.Arguments.Count == 2 && m.Arguments[1].Type == typeof(int))
{
Write("ROUND(");
Visit(m.Arguments[0]);
Write(", ");
Visit(m.Arguments[1]);
Write(")");
return m;
}
break;
case "Truncate":
Write("ROUND(");
Visit(m.Arguments[0]);
Write(", 0, 1)");
return m;
}
}
if (m.Method.Name == "ToString")
{
if (m.Object.Type != typeof(string))
{
Write("CONVERT(NVARCHAR, ");
Visit(m.Object);
Write(")");
}
else
Visit(m.Object);
return m;
}
else if (!m.Method.IsStatic && string.Equals(m.Method.Name, "CompareTo", StringComparison.Ordinal) && m.Method.ReturnType == typeof(int) && m.Arguments.Count == 1)
{
Write("(CASE WHEN ");
Visit(m.Object);
Write(" = ");
Visit(m.Arguments[0]);
Write(" THEN 0 WHEN ");
Visit(m.Object);
Write(" < ");
Visit(m.Arguments[0]);
Write(" THEN -1 ELSE 1 END)");
return m;
}
else if (m.Method.IsStatic && string.Equals(m.Method.Name, "Compare", StringComparison.Ordinal) && m.Method.ReturnType == typeof(int) && m.Arguments.Count == 2)
{
Write("(CASE WHEN ");
Visit(m.Arguments[0]);
Write(" = ");
Visit(m.Arguments[1]);
Write(" THEN 0 WHEN ");
Visit(m.Arguments[0]);
Write(" < ");
Visit(m.Arguments[1]);
Write(" THEN -1 ELSE 1 END)");
return m;
}
else if (m.Method.DeclaringType == typeof(TypeComparer) && m.Method.IsStatic && string.Equals(m.Method.Name, nameof(TypeComparer.Compare), StringComparison.Ordinal) && m.Method.ReturnType == typeof(bool) && m.Arguments.Count == 2)
{
Visit(m.Arguments[0]);
Write(" = ");
Visit(m.Arguments[1]);
return m;
}
return base.VisitMethodCall(m);
}
protected override NewExpression VisitNew(NewExpression nex)
{
if (nex.Constructor.DeclaringType == typeof(DateTime))
{
if (nex.Arguments.Count == 3)
{
Write("Convert(DateTime, ");
Write("Convert(nvarchar, ");
Visit(nex.Arguments[0]);
Write(") + '/' + ");
Write("Convert(nvarchar, ");
Visit(nex.Arguments[1]);
Write(") + '/' + ");
Write("Convert(nvarchar, ");
Visit(nex.Arguments[2]);
Write("))");
return nex;
}
else if (nex.Arguments.Count == 6)
{
Write("Convert(DateTime, ");
Write("Convert(nvarchar, ");
Visit(nex.Arguments[0]);
Write(") + '/' + ");
Write("Convert(nvarchar, ");
Visit(nex.Arguments[1]);
Write(") + '/' + ");
Write("Convert(nvarchar, ");
Visit(nex.Arguments[2]);
Write(") + ' ' + ");
Write("Convert(nvarchar, ");
Visit(nex.Arguments[3]);
Write(") + ':' + ");
Write("Convert(nvarchar, ");
Visit(nex.Arguments[4]);
Write(") + ':' + ");
Write("Convert(nvarchar, ");
Visit(nex.Arguments[5]);
Write("))");
return nex;
}
}
return base.VisitNew(nex);
}
protected override Expression VisitBinary(BinaryExpression b)
{
if (b.NodeType == ExpressionType.Power)
{
Write("POWER(");
VisitValue(b.Left);
Write(", ");
VisitValue(b.Right);
Write(")");
return b;
}
else if (b.NodeType == ExpressionType.Coalesce)
{
Write("COALESCE(");
VisitValue(b.Left);
Write(", ");
var right = b.Right;
while (right.NodeType == ExpressionType.Coalesce)
{
var rb = (BinaryExpression)right;
VisitValue(rb.Left);
Write(", ");
right = rb.Right;
}
VisitValue(right);
Write(")");
return b;
}
else if (b.NodeType == ExpressionType.LeftShift)
{
Write("(");
VisitValue(b.Left);
Write(" * POWER(2, ");
VisitValue(b.Right);
Write("))");
return b;
}
else if (b.NodeType == ExpressionType.RightShift)
{
Write("(");
VisitValue(b.Left);
Write(" / POWER(2, ");
VisitValue(b.Right);
Write("))");
return b;
}
return base.VisitBinary(b);
}
protected override Expression VisitConstant(ConstantExpression c)
{
var parameter = Context.Parameters.FirstOrDefault(f => f.Value == c);
if (parameter.Value is not null)
{
Write($"@{parameter.Key}");
return c;
}
return base.VisitConstant(c);
}
protected override Expression VisitValue(Expression expr)
{
if (IsPredicate(expr))
{
Write("CASE WHEN (");
Visit(expr);
Write(") THEN 1 ELSE 0 END");
return expr;
}
return base.VisitValue(expr);
}
protected override Expression VisitConditional(ConditionalExpression c)
{
if (IsPredicate(c.Test))
{
Write("(CASE WHEN ");
VisitPredicate(c.Test);
Write(" THEN ");
VisitValue(c.IfTrue);
var ifFalse = c.IfFalse;
while (ifFalse is not null && ifFalse.NodeType == ExpressionType.Conditional)
{
var fc = (ConditionalExpression)ifFalse;
Write(" WHEN ");
VisitPredicate(fc.Test);
Write(" THEN ");
VisitValue(fc.IfTrue);
ifFalse = fc.IfFalse;
}
if (ifFalse is not null)
{
Write(" ELSE ");
VisitValue(ifFalse);
}
Write(" END)");
}
else
{
Write("(CASE ");
VisitValue(c.Test);
Write(" WHEN 0 THEN ");
VisitValue(c.IfFalse);
Write(" ELSE ");
VisitValue(c.IfTrue);
Write(" END)");
}
return c;
}
protected override Expression VisitRowNumber(RowNumberExpression rowNumber)
{
Write("ROW_NUMBER() OVER(");
if (rowNumber.OrderBy is not null && rowNumber.OrderBy.Any())
{
Write("ORDER BY ");
for (var i = 0; i < rowNumber.OrderBy.Count; i++)
{
var exp = rowNumber.OrderBy[i];
if (i > 0)
Write(", ");
VisitValue(exp.Expression);
if (exp.OrderType != OrderType.Ascending)
Write(" DESC");
}
}
Write(")");
return rowNumber;
}
protected override Expression VisitIf(IfCommandExpression ifx)
{
if (!Language.AllowsMultipleCommands)
return base.VisitIf(ifx);
Write("IF ");
Visit(ifx.Check);
WriteLine(Indentation.Same);
Write("BEGIN");
WriteLine(Indentation.Inner);
VisitStatement(ifx.IfTrue);
WriteLine(Indentation.Outer);
if (ifx.IfFalse is not null)
{
Write("END ELSE BEGIN");
WriteLine(Indentation.Inner);
VisitStatement(ifx.IfFalse);
WriteLine(Indentation.Outer);
}
Write("END");
return ifx;
}
protected override Expression VisitBlock(Expressions.BlockExpression block)
{
if (!Language.AllowsMultipleCommands)
return base.VisitBlock(block);
for (var i = 0; i < block.Commands.Count; i++)
{
if (i > 0)
{
WriteLine(Indentation.Same);
WriteLine(Indentation.Same);
}
VisitStatement(block.Commands[i]);
}
return block;
}
protected override Expression VisitDeclaration(DeclarationExpression decl)
{
if (!Language.AllowsMultipleCommands)
return base.VisitDeclaration(decl);
for (var i = 0; i < decl.Variables.Count; i++)
{
var v = decl.Variables[i];
if (i > 0)
WriteLine(Indentation.Same);
Write("DECLARE @");
Write(v.Name);
Write(" ");
Write(Language.TypeSystem.Format(v.DataType, false));
}
if (decl.Source is not null)
{
WriteLine(Indentation.Same);
Write("SELECT ");
for (var i = 0; i < decl.Variables.Count; i++)
{
if (i > 0)
Write(", ");
Write("@");
Write(decl.Variables[i].Name);
Write(" = ");
Visit(decl.Source.Columns[i].Expression);
}
if (decl.Source.From is not null)
{
WriteLine(Indentation.Same);
Write("FROM ");
VisitSource(decl.Source.From);
}
if (decl.Source.Where is not null)
{
WriteLine(Indentation.Same);
Write("WHERE ");
Visit(decl.Source.Where);
}
}
else
{
for (var i = 0; i < decl.Variables.Count; i++)
{
var v = decl.Variables[i];
if (v.Expression is not null)
{
WriteLine(Indentation.Same);
Write("SET @");
Write(v.Name);
Write(" = ");
Visit(v.Expression);
}
}
}
return decl;
}
}

@ -0,0 +1,47 @@
using Connected.Expressions;
using Connected.Expressions.Languages;
using Connected.Expressions.Translation;
using Connected.Expressions.TypeSystem;
namespace Connected.ServiceModel.Client.Data;
internal sealed class CqlLanguage : QueryLanguage
{
private static CqlLanguage? _default;
static CqlLanguage()
{
SplitChars = new char[] { '.' };
}
public CqlLanguage()
{
TypeSystem = new CqlTypeSystem();
}
public override QueryTypeSystem TypeSystem { get; }
private static char[] SplitChars { get; }
public override bool AllowsMultipleCommands => true;
public override bool AllowSubqueryInSelectWithoutFrom => true;
public override bool AllowDistinctInAggregates => true;
public static CqlLanguage Default
{
get
{
if (_default is null)
Interlocked.CompareExchange(ref _default, new CqlLanguage(), null);
return _default;
}
}
public override string Quote(string name)
{
return name;
}
public override Linguist CreateLinguist(ExpressionCompilationContext context, Translator translator)
{
return new CqlLinguist(context, this, translator);
}
}

@ -0,0 +1,41 @@
using System.Linq.Expressions;
using Connected.Expressions;
using Connected.Expressions.Languages;
using Connected.Expressions.Translation;
using Connected.Expressions.Translation.Rewriters;
namespace Connected.ServiceModel.Client.Data;
internal class CqlLinguist : Linguist
{
public CqlLinguist(ExpressionCompilationContext context, CqlLanguage language, Translator translator)
: base(context, language, translator)
{
}
public override Expression Translate(Expression expression)
{
/*
* fix up any order-by's
*/
expression = OrderByRewriter.Rewrite(Language, expression);
expression = base.Translate(expression);
/*
* convert skip/take info into RowNumber pattern
*/
expression = SkipToRowNumberRewriter.Rewrite(Language, expression);
/*
* fix up any order-by's we may have changed
*/
expression = OrderByRewriter.Rewrite(Language, expression);
return expression;
}
public override string Format(Expression expression)
{
return CqlFormatter.Format(Context, expression, Language);
}
}

@ -0,0 +1,190 @@
using Connected.Expressions.Languages;
using Connected.Expressions.TypeSystem;
using Connected.Interop;
using System.Data;
using System.Globalization;
using System.Reflection;
using System.Text;
namespace Connected.ServiceModel.Client.Data;
internal sealed class CqlTypeSystem : QueryTypeSystem
{
public static int StringDefaultSize => int.MaxValue;
public static int BinaryDefaultSize => int.MaxValue;
public override DataType Parse(string typeDeclaration)
{
string[]? args = null;
string typeName;
string? remainder = null;
var openParen = typeDeclaration.IndexOf('(');
if (openParen >= 0)
{
typeName = typeDeclaration[..openParen].Trim();
var closeParen = typeDeclaration.IndexOf(')', openParen);
if (closeParen < openParen)
closeParen = typeDeclaration.Length;
var argstr = typeDeclaration[(openParen + 1)..closeParen];
args = argstr.Split(',');
remainder = typeDeclaration[(closeParen + 1)..];
}
else
{
var space = typeDeclaration.IndexOf(' ');
if (space >= 0)
{
typeName = typeDeclaration[..space];
remainder = typeDeclaration[(space + 1)..].Trim();
}
else
typeName = typeDeclaration;
}
var isNotNull = (remainder is not null) && remainder.ToUpper().Contains("NOT NULL");
return ResolveDataType(typeName, args, isNotNull);
}
public DataType ResolveDataType(string typeName, string[] args, bool isNotNull)
{
if (string.Equals(typeName, "rowversion", StringComparison.OrdinalIgnoreCase))
typeName = "Timestamp";
if (string.Equals(typeName, "numeric", StringComparison.OrdinalIgnoreCase))
typeName = "Decimal";
if (string.Equals(typeName, "sql_variant", StringComparison.OrdinalIgnoreCase))
typeName = "Variant";
var dbType = ResolveSqlType(typeName);
var length = 0;
short precision = 0;
short scale = 0;
switch (dbType)
{
case SqlDbType.Binary:
case SqlDbType.Char:
case SqlDbType.Image:
case SqlDbType.NChar:
case SqlDbType.NVarChar:
case SqlDbType.VarBinary:
case SqlDbType.VarChar:
length = args is null || !args.Any() ? 32 : string.Equals(args[0], "max", StringComparison.OrdinalIgnoreCase) ? int.MaxValue : int.Parse(args[0]);
break;
case SqlDbType.Money:
precision = args is null || !args.Any() ? (short)29 : short.Parse(args[0], NumberFormatInfo.InvariantInfo);
scale = args is null || args.Length < 2 ? (short)4 : short.Parse(args[1], NumberFormatInfo.InvariantInfo);
break;
case SqlDbType.Decimal:
precision = args is null || !args.Any() ? (short)29 : short.Parse(args[0], NumberFormatInfo.InvariantInfo);
scale = args is null || args.Length < 2 ? (short)0 : short.Parse(args[1], NumberFormatInfo.InvariantInfo);
break;
case SqlDbType.Float:
case SqlDbType.Real:
precision = args is null || !args.Any() ? (short)29 : short.Parse(args[0], NumberFormatInfo.InvariantInfo);
break;
}
return NewType(dbType, isNotNull, length, precision, scale);
}
private static DataType NewType(SqlDbType type, bool isNotNull, int length, short precision, short scale)
{
return new CqlDataType(type, isNotNull, length, precision, scale);
}
public static SqlDbType ResolveSqlType(string typeName)
{
return (SqlDbType)Enum.Parse(typeof(SqlDbType), typeName, true);
}
public override DataType ResolveColumnType(Type type)
{
var isNotNull = type.GetTypeInfo().IsValueType && !Nullables.IsNullableType(type);
type = Nullables.GetNonNullableType(type);
switch (Interop.TypeSystem.GetTypeCode(type))
{
case TypeCode.Boolean:
return NewType(SqlDbType.Bit, isNotNull, 0, 0, 0);
case TypeCode.SByte:
case TypeCode.Byte:
return NewType(SqlDbType.TinyInt, isNotNull, 0, 0, 0);
case TypeCode.Int16:
case TypeCode.UInt16:
return NewType(SqlDbType.SmallInt, isNotNull, 0, 0, 0);
case TypeCode.Int32:
case TypeCode.UInt32:
return NewType(SqlDbType.Int, isNotNull, 0, 0, 0);
case TypeCode.Int64:
case TypeCode.UInt64:
return NewType(SqlDbType.BigInt, isNotNull, 0, 0, 0);
case TypeCode.Single:
case TypeCode.Double:
return NewType(SqlDbType.Float, isNotNull, 0, 0, 0);
case TypeCode.String:
return NewType(SqlDbType.NVarChar, isNotNull, StringDefaultSize, 0, 0);
case TypeCode.Char:
return NewType(SqlDbType.NChar, isNotNull, 1, 0, 0);
case TypeCode.DateTime:
return NewType(SqlDbType.DateTime, isNotNull, 0, 0, 0);
case TypeCode.Decimal:
return NewType(SqlDbType.Decimal, isNotNull, 0, 29, 4);
default:
if (type == typeof(byte[]))
return NewType(SqlDbType.VarBinary, isNotNull, BinaryDefaultSize, 0, 0);
else if (type == typeof(Guid))
return NewType(SqlDbType.UniqueIdentifier, isNotNull, 0, 0, 0);
else if (type == typeof(DateTimeOffset))
return NewType(SqlDbType.DateTimeOffset, isNotNull, 0, 0, 0);
else if (type == typeof(TimeSpan))
return NewType(SqlDbType.Time, isNotNull, 0, 0, 0);
else if (type.GetTypeInfo().IsEnum)
return NewType(SqlDbType.Int, isNotNull, 0, 0, 0);
else
throw new NotSupportedException(nameof(ResolveColumnType));
}
}
public static bool IsVariableLength(SqlDbType dbType)
{
return dbType switch
{
SqlDbType.Image or SqlDbType.NText or SqlDbType.NVarChar or SqlDbType.Text or SqlDbType.VarBinary or SqlDbType.VarChar or SqlDbType.Xml => true,
_ => false,
};
}
public override string Format(DataType type, bool suppressSize)
{
var sqlType = (CqlDataType)type;
var sb = new StringBuilder();
sb.Append(sqlType.DbType.ToString().ToUpper());
if (sqlType.Length > 0 && !suppressSize)
{
if (sqlType.Length == int.MaxValue)
sb.Append("(max)");
else
sb.AppendFormat(NumberFormatInfo.InvariantInfo, "({0})", sqlType.Length);
}
else if (sqlType.Precision != 0)
{
if (sqlType.Scale != 0)
sb.AppendFormat(NumberFormatInfo.InvariantInfo, "({0},{1})", sqlType.Precision, sqlType.Scale);
else
sb.AppendFormat(NumberFormatInfo.InvariantInfo, "({0})", sqlType.Precision);
}
return sb.ToString();
}
}

@ -0,0 +1,125 @@
using System.Collections;
using System.Data.Common;
namespace Connected.ServiceModel.Client.Data;
internal sealed class DataParameterCollection : DbParameterCollection
{
private readonly object _syncRoot = new();
public DataParameterCollection()
{
Items = new();
}
private List<DbParameter> Items { get; }
public override int Count => Items.Count;
public override object SyncRoot => _syncRoot;
public override int Add(object value)
{
if (value is not DbParameter parameter)
throw new InvalidCastException(nameof(DbParameter));
Items.Add(parameter);
return Items.Count - 1;
}
public override void AddRange(Array values)
{
foreach (var item in values)
Add(item);
}
public override void Clear()
{
Items.Clear();
}
public override bool Contains(object value)
{
return Items.Contains(value);
}
public override bool Contains(string value)
{
return Items.FirstOrDefault(f => string.Equals(f.ParameterName, value, StringComparison.OrdinalIgnoreCase)) is not null;
}
public override void CopyTo(Array array, int index)
{
foreach (var item in array)
{
Insert(index, item);
index++;
}
}
public override IEnumerator GetEnumerator()
{
return Items.GetEnumerator();
}
public override int IndexOf(object value)
{
if (value is not DbParameter parameter)
throw new InvalidCastException(nameof(DbParameter));
return Items.IndexOf(parameter);
}
public override int IndexOf(string parameterName)
{
if (Items.FirstOrDefault(f => string.Equals(f.ParameterName, parameterName, StringComparison.OrdinalIgnoreCase)) is DbParameter parameter)
return Items.IndexOf(parameter);
return -1;
}
public override void Insert(int index, object value)
{
if (value is not DbParameter parameter)
throw new InvalidCastException(nameof(DbParameter));
Items.Insert(index, parameter);
}
public override void Remove(object value)
{
if (value is not DbParameter parameter)
throw new InvalidCastException(nameof(DbParameter));
Items.Remove(parameter);
}
public override void RemoveAt(int index)
{
Items.RemoveAt(index);
}
public override void RemoveAt(string parameterName)
{
if (Items.FirstOrDefault(f => string.Equals(f.ParameterName, parameterName, StringComparison.OrdinalIgnoreCase)) is DbParameter parameter)
Items.Remove(parameter);
}
protected override DbParameter GetParameter(int index)
{
return Items[index];
}
protected override DbParameter GetParameter(string parameterName)
{
return Items.First(f => string.Equals(f.ParameterName, parameterName, StringComparison.OrdinalIgnoreCase));
}
protected override void SetParameter(int index, DbParameter value)
{
Items[index] = value;
}
protected override void SetParameter(string parameterName, DbParameter value)
{
Items[IndexOf(parameterName)] = value;
}
}

@ -0,0 +1,56 @@
using System.Collections.Concurrent;
using System.Reflection;
using Connected.Entities.Annotations;
using Connected.Entities.Storage;
namespace Connected.ServiceModel.Client.Data;
internal sealed class DeleteCommandBuilder : CommandBuilder
{
private static readonly ConcurrentDictionary<string, StorageOperation> _cache;
static DeleteCommandBuilder()
{
_cache = new();
}
private static ConcurrentDictionary<string, StorageOperation> Cache => _cache;
protected override StorageOperation OnBuild()
{
WriteLine($"DELETE [{Schema.Schema}].[{Schema.Name}] (");
WriteWhere();
var result = new StorageOperation { CommandText = CommandText };
foreach (var parameter in Parameters)
result.AddParameter(parameter);
Cache.TryAdd(Entity.GetType().FullName, result);
return result;
}
private void WriteWhere()
{
Write("WHERE ");
foreach (var property in Properties)
{
if (property.GetCustomAttribute<PrimaryKeyAttribute>() is not null)
{
var columnName = ColumnName(property);
CreateParameter(property);
Write($"{ColumnName} = @{ColumnName}");
}
}
Write(";");
}
protected override bool TryGetExisting(out StorageOperation? result)
{
return Cache.TryGetValue(Entity.GetType().FullName, out result);
}
}

@ -0,0 +1,67 @@
using System.Collections.Concurrent;
using System.Reflection;
using Connected.Entities.Annotations;
using Connected.Entities.Storage;
namespace Connected.ServiceModel.Client.Data;
internal sealed class InsertCommandBuilder : CommandBuilder
{
private static readonly ConcurrentDictionary<string, StorageOperation> _cache;
static InsertCommandBuilder()
{
_cache = new();
}
private static ConcurrentDictionary<string, StorageOperation> Cache => _cache;
protected override StorageOperation OnBuild()
{
WriteLine($"INSERT [{Schema.Schema}].[{Schema.Name}] (");
WriteColumns();
WriteLine(")");
Write("VALUES (");
WriteValues();
WriteLine(");");
var result = new StorageOperation { CommandText = CommandText };
foreach (var parameter in Parameters)
result.AddParameter(parameter);
Cache.TryAdd(Entity.GetType().FullName, result);
return result;
}
private void WriteColumns()
{
foreach (var property in Properties)
{
CreateParameter(property);
Write($"{ColumnName(property)}, ");
}
Trim();
}
private void WriteValues()
{
foreach (var property in Properties)
{
if (property.GetCustomAttribute<PrimaryKeyAttribute>() is not null)
continue;
Write($"@{ColumnName(property)}, ");
}
Trim();
}
protected override bool TryGetExisting(out StorageOperation? result)
{
return Cache.TryGetValue(Entity.GetType().FullName, out result);
}
}

@ -0,0 +1,12 @@
using System.ComponentModel.DataAnnotations;
namespace Connected.ServiceModel.Client.Data.Remote;
internal sealed class RemoteTableColumn
{
[Required, MaxLength(128)]
public string Name { get; set; } = default!;
[Required, MaxLength(128)]
public string DataType { get; set; } = default!;
public bool IsPartitionKey { get; set; }
public bool IsPrimaryKey { get; set; }
}

@ -0,0 +1,112 @@
using System.Collections.Immutable;
using System.Text.Json.Nodes;
using Connected.Net;
using Connected.ServiceModel.Client.Net;
using Connected.ServiceModel.Client.Subscription;
namespace Connected.ServiceModel.Client.Data.Remote;
internal sealed class RemoteTableService
{
//TODO:load it from config or environment.
private const string AccessToken = "Temp";
public RemoteTableService(IHttpService http, IConnectedServer server, ISubscriptionService subscription)
{
Http = http;
Server = server;
Subscription = subscription;
}
private IHttpService Http { get; }
private IConnectedServer Server { get; }
private ISubscriptionService Subscription { get; }
private int SubscriptionId { get; set; }
public async Task<JsonArray> Query(string commandText)
{
await Initialize();
var url = await Server.SelectUrl(new ConnectedServerUrlArgs { Kind = ConnectedUrlKind.TableStorage });
if (await Http.Post<JsonArray>($"{url}/query", new QueryTableArgs
{
CommandText = commandText,
AccessToken = AccessToken,
Subscription = SubscriptionId
}) is not JsonArray result)
return new JsonArray();
return result;
}
public async Task<ImmutableList<RemoteTableColumn>> QueryColumns(string tableName)
{
await Initialize();
var url = await Server.SelectUrl(new ConnectedServerUrlArgs { Kind = ConnectedUrlKind.TableStorage });
if (await Http.Post<List<RemoteTableColumn>>($"{url}/queryColumns", new TableSchemaArgs
{
TableName = tableName,
AccessToken = AccessToken,
Subscription = SubscriptionId
}) is not List<RemoteTableColumn> result)
return ImmutableList<RemoteTableColumn>.Empty;
return result.ToImmutableList();
}
public async Task<bool> TableExists(string tableName)
{
await Initialize();
var url = await Server.SelectUrl(new ConnectedServerUrlArgs { Kind = ConnectedUrlKind.TableStorage });
return await Http.Post<bool>($"{url}/tableExists", new TableSchemaArgs
{
TableName = tableName,
AccessToken = AccessToken,
Subscription = SubscriptionId
});
}
public async Task Update(string commandText)
{
await Initialize();
var url = await Server.SelectUrl(new ConnectedServerUrlArgs { Kind = ConnectedUrlKind.TableStorage });
await Http.Post($"{url}/update", new UpdateTableArgs
{
CommandText = commandText,
AccessToken = AccessToken,
Subscription = SubscriptionId
});
}
public async Task CreateTable(string tableName, List<RemoteTableColumn> columns)
{
await Initialize();
var url = await Server.SelectUrl(new ConnectedServerUrlArgs { Kind = ConnectedUrlKind.TableStorage });
await Http.Post($"{url}/createTable", new CreateTableArgs
{
Name = tableName,
Columns = columns,
AccessToken = AccessToken,
Subscription = SubscriptionId
});
}
private async Task Initialize()
{
if (SubscriptionId > 0)
return;
if (await Subscription.Select() is not ISubscription subscription)
throw new NullReferenceException(nameof(ISubscription));
SubscriptionId = subscription.Id;
}
}

@ -0,0 +1,33 @@
using System.ComponentModel.DataAnnotations;
using Connected.Annotations;
namespace Connected.ServiceModel.Client.Data.Remote;
internal class TableArgs : ServiceArgs
{
}
internal sealed class QueryTableArgs : TableArgs
{
[Required]
public string CommandText { get; set; } = default!;
}
internal sealed class TableSchemaArgs : ServiceArgs
{
[Required, MaxLength(128)]
public string TableName { get; set; } = default!;
}
internal sealed class CreateTableArgs : ServiceArgs
{
[Required, MaxLength(128)]
public string Name { get; set; } = default!;
[NonDefault]
public List<RemoteTableColumn> Columns { get; set; }
}
internal sealed class UpdateTableArgs : ServiceArgs
{
[Required]
public string CommandText { get; set; } = default!;
}

@ -0,0 +1,45 @@
using Connected.Data.Schema;
namespace Connected.ServiceModel.Client.Data.Schema;
internal sealed class ExistingSchema : ISchema
{
public ExistingSchema()
{
Columns = new();
}
public List<ISchemaColumn> Columns { get; }
public string? Schema => null;
public string? Name { get; set; }
public string? Type { get; set; }
public bool Ignore { get; set; }
public async Task Load(SchemaExecutionContext context)
{
Name = context.Schema.Name;
Type = context.Schema.Type;
if (!await context.Remote.TableExists(context.Schema.Name))
return;
var columns = await context.Remote.QueryColumns(context.Schema.Name);
foreach (var column in columns)
{
Columns.Add(new SchemaColumn
{
Name = column.Name,
//TODO:populate properties
});
}
}
public bool Equals(ISchema? other)
{
throw new NotImplementedException();
}
}

@ -0,0 +1,43 @@
using System.Data;
using System.Reflection;
using Connected.Data.Schema;
using Connected.Entities.Annotations;
namespace Connected.ServiceModel.Client.Data.Schema;
internal sealed class SchemaColumn : ISchemaColumn
{
public string? Name { get; set; }
public DbType DataType { get; set; }
public bool IsIdentity { get; set; }
public bool IsUnique { get; set; }
public bool IsIndex { get; set; }
public bool IsPrimaryKey { get; set; }
public bool IsVersion { get; set; }
public string? DefaultValue { get; set; }
public int MaxLength { get; set; }
public bool IsNullable { get; set; }
public string? Index { get; set; }
public int Scale { get; set; }
public int Precision { get; set; }
public DateKind DateKind { get; set; }
public BinaryKind BinaryKind { get; set; }
public int DatePrecision { get; set; }
public bool IsPartitionKey { get; set; }
public PropertyInfo Property { get; set; }
}

@ -0,0 +1,16 @@
using Connected.Data.Schema;
using Connected.ServiceModel.Client.Data.Remote;
namespace Connected.ServiceModel.Client.Data.Schema;
internal sealed class SchemaExecutionContext
{
public SchemaExecutionContext(ISchema schema, RemoteTableService remote)
{
Schema = schema;
Remote = remote;
}
public ExistingSchema ExistingSchema { get; set; }
public ISchema Schema { get; }
public RemoteTableService Remote { get; }
}

@ -0,0 +1,4 @@
namespace Connected.ServiceModel.Client.Data.Schema;
internal class SynchronizationCommand
{
}

@ -0,0 +1,19 @@
namespace Connected.ServiceModel.Client.Data.Schema;
internal class SynchronizationQuery<T> : SynchronizationCommand
{
protected SchemaExecutionContext Context { get; private set; }
public async Task<T> Execute(SchemaExecutionContext context)
{
Context = context;
return await OnExecute();
}
protected virtual async Task<T> OnExecute()
{
await Task.CompletedTask;
return default;
}
}

@ -0,0 +1,17 @@
namespace Connected.ServiceModel.Client.Data.Schema;
internal class SynchronizationTransaction : SynchronizationCommand
{
protected SchemaExecutionContext Context { get; private set; }
public async Task Execute(SchemaExecutionContext context)
{
Context = context;
await OnExecute();
}
protected virtual async Task OnExecute()
{
await Task.CompletedTask;
}
}

@ -0,0 +1,127 @@
using Connected.Collections;
using Connected.Interop;
using Connected.ServiceModel.Annotations;
using Connected.ServiceModel.Client.Data.Remote;
namespace Connected.ServiceModel.Client.Data.Schema;
internal sealed class TableCreate : TableTransaction
{
//private const string KeysExceptionMessage = "A ISchemaColumn cannot have a PartitionKeyAttribute and PrimaryKeyAttribute set. Use either PartitionKey or PrimaryKey attribute.";
//private const string NoPartitionKeyMessage = "Schema must have at least one property with PartitionKeyAttribute.";
protected override async Task OnExecute()
{
var columns = new List<RemoteTableColumn>();
Context.Schema.Columns.SortByOrdinal();
foreach (var column in Context.Schema.Columns)
{
columns.Add(new RemoteTableColumn
{
DataType = CreateDataTypeMetaData(column),
IsPartitionKey = column.Property?.FindAttribute<PartitionKeyAttribute>() is not null,
IsPrimaryKey = column.IsPrimaryKey,
Name = column.Name
});
}
await Context.Remote.CreateTable(Context.Schema.Name, columns);
}
//private List<ISchemaColumn> PartitionKeys
//{
// get
// {
// var result = new List<ISchemaColumn>();
// foreach (var column in Context.Schema.Columns)
// {
// if (column.Property?.FindAttribute<PartitionKeyAttribute>() is not null)
// {
// if (column.IsPrimaryKey)
// throw new InvalidOperationException($"{KeysExceptionMessage} ({column.Name})");
// result.Add(column);
// }
// }
// return result;
// }
//}
//private List<ISchemaColumn> PrimaryKeys
//{
// get
// {
// var result = new List<ISchemaColumn>();
// foreach (var column in Context.Schema.Columns)
// {
// if (column.IsPrimaryKey)
// {
// if (column.Property?.FindAttribute<PartitionKeyAttribute>() is not null)
// throw new InvalidOperationException($"{KeysExceptionMessage} ({column.Name})");
// result.Add(column);
// }
// }
// return result;
// }
//}
//private string CommandText
//{
// get
// {
// var partitionKeys = PartitionKeys;
// var primaryKeys = PrimaryKeys;
// if (!partitionKeys.Any())
// throw new InvalidOperationException($"{NoPartitionKeyMessage} ({Context.Schema.Name})");
// var keysCount = partitionKeys.Count + primaryKeys.Count;
// var text = new StringBuilder();
// var name = Temporary ? TemporaryName : Context.Schema.Name;
// text.AppendLine($"CREATE TABLE {name}");
// text.AppendLine("(");
// var comma = string.Empty;
// for (var i = 0; i < Context.Schema.Columns.Count; i++)
// {
// text.AppendLine($"{comma} {CreateColumnCommandText(Context.Schema.Columns[i])}");
// comma = ",";
// }
// text.Append("PRIMARY KEY (");
// if (keysCount > 1)
// text.Append('(');
// for (var i = 0; i < partitionKeys.Count; i++)
// {
// text.Append(partitionKeys[i].Name);
// if (i < partitionKeys.Count - 1)
// text.Append(',');
// }
// if (keysCount > 1)
// text.Append(')');
// for (var i = 0; i < primaryKeys.Count; i++)
// {
// text.Append(primaryKeys[i].Name);
// if (i < primaryKeys.Count - 1)
// text.Append(',');
// }
// text.AppendLine(");");
// return text.ToString();
// }
}

@ -0,0 +1,8 @@
namespace Connected.ServiceModel.Client.Data.Schema;
internal class TableExists : SynchronizationQuery<bool>
{
protected override async Task<bool> OnExecute()
{
return await Context.Remote.TableExists(Context.Schema.Name);
}
}

@ -0,0 +1,93 @@
using Connected.Data.Schema;
namespace Connected.ServiceModel.Client.Data.Schema;
internal sealed class TableSynchronize : TableTransaction
{
private ExistingSchema? _existingSchema;
private bool TableExists { get; set; }
protected override async Task OnExecute()
{
TableExists = await new TableExists().Execute(Context);
if (!TableExists)
{
await new TableCreate().Execute(Context);
return;
}
return;
_existingSchema = new();
await _existingSchema.Load(Context);
Context.ExistingSchema = ExistingSchema;
//TODO: implement alter table
//if (ShouldRecreate)
// await new TableRecreate(ExistingSchema).Execute(Context);
//else if (ShouldAlter)
// await new TableAlter(ExistingSchema).Execute(Context);
}
private bool ShouldAlter => !Context.Schema.Equals(ExistingSchema);
private bool ShouldRecreate => HasIdentityChanged || HasColumnMetadataChanged;
private ExistingSchema? ExistingSchema => _existingSchema;
private bool HasIdentityChanged
{
get
{
foreach (var column in Context.Schema.Columns)
{
if (ExistingSchema.Columns.FirstOrDefault(f => string.Equals(f.Name, column.Name, StringComparison.OrdinalIgnoreCase)) is not ISchemaColumn existing)
return true;
if (existing.IsIdentity != column.IsIdentity)
return true;
}
foreach (var existing in ExistingSchema.Columns)
{
var column = Context.Schema.Columns.FirstOrDefault(f => string.Equals(f.Name, existing.Name, StringComparison.OrdinalIgnoreCase));
if (column is null && existing.IsIdentity)
return true;
else if (column is not null && column.IsIdentity != existing.IsIdentity)
return true;
}
return false;
}
}
private bool HasColumnMetadataChanged
{
get
{
foreach (var existing in ExistingSchema.Columns)
{
if (Context.Schema.Columns.FirstOrDefault(f => string.Equals(f.Name, existing.Name, StringComparison.OrdinalIgnoreCase)) is not ISchemaColumn column)
continue;
if (column.DataType != existing.DataType
|| column.MaxLength != existing.MaxLength
|| column.IsNullable != existing.IsNullable
|| column.IsVersion != existing.IsVersion
|| column.Precision != existing.Precision
|| column.Scale != existing.Scale
|| column.DateKind != existing.DateKind
|| column.BinaryKind != existing.BinaryKind
|| column.DatePrecision != existing.DatePrecision)
return true;
}
return false;
}
}
}

@ -0,0 +1,51 @@
using System.Data;
using System.Text;
using Connected.Data.Schema;
namespace Connected.ServiceModel.Client.Data.Schema;
internal class TableTransaction : SynchronizationTransaction
{
protected static string CreateColumnCommandText(ISchemaColumn column)
{
var builder = new StringBuilder();
builder.AppendFormat($"{column.Name} {CreateDataTypeMetaData(column)} ");
return builder.ToString();
}
protected static string CreateDataTypeMetaData(ISchemaColumn column)
{
return column.DataType switch
{
DbType.AnsiString => "text",
DbType.Binary => "blob",
DbType.Byte => "tinyint",
DbType.Boolean => "boolean",
DbType.Currency => "decimal",
DbType.Date => "timestamp",
DbType.DateTime => "timestamp",
DbType.Decimal => "decimal",
DbType.Double => "double",
DbType.Guid => "uuid",
DbType.Int16 => "smallint",
DbType.Int32 => "int",
DbType.Int64 => "bigint",
DbType.Object => "blob",
DbType.SByte => "smallint",
DbType.Single => "float",
DbType.String => "text",
DbType.Time => "time",
DbType.UInt16 => "int",
DbType.UInt32 => "bigint",
DbType.UInt64 => "float",
DbType.VarNumeric => "decimal",
DbType.AnsiStringFixedLength => "text",
DbType.StringFixedLength => "text",
DbType.Xml => "text",
DbType.DateTime2 => "timestamp",
DbType.DateTimeOffset => "timestamp",
_ => throw new NotSupportedException(),
};
}
}

@ -0,0 +1,68 @@
using Connected.Data.Storage;
using Connected.Entities.Storage;
namespace Connected.ServiceModel.Client.Data;
internal abstract class TableCommand : IStorageCommand
{
protected TableCommand(IStorageOperation operation, IStorageConnection connection)
{
Connection = connection;
Operation = operation;
}
protected bool IsDisposed { get; private set; }
public IStorageOperation Operation { get; }
public IStorageConnection? Connection { get; protected set; }
protected virtual async ValueTask DisposeAsync(bool disposing)
{
if (!IsDisposed)
{
if (disposing)
{
Connection = null;
await OnDisposingAsync();
}
IsDisposed = true;
}
}
protected virtual async ValueTask OnDisposingAsync()
{
await ValueTask.CompletedTask;
}
protected virtual void OnDisposing()
{
}
public async ValueTask DisposeAsync()
{
await DisposeAsync(true);
GC.SuppressFinalize(this);
}
protected virtual void Dispose(bool disposing)
{
if (!IsDisposed)
{
if (disposing)
{
Connection = null;
OnDisposing();
}
IsDisposed = true;
}
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
}

@ -0,0 +1,87 @@
using System.Data;
using System.Diagnostics.CodeAnalysis;
using Connected.ServiceModel.Client.Data.Remote;
namespace Connected.ServiceModel.Client.Data;
/// <summary>
/// Represents the REST connection to the TomPIT.connected Table Service.
/// </summary>
internal sealed class TableConnection : IDbConnection
{
public TableConnection(RemoteTableService tables, string connectionString)
{
Tables = tables;
ConnectionString = connectionString;
}
public RemoteTableService Tables { get; }
/// <summary>
/// The connection string (URL) used when performing the requests.
/// </summary>
[AllowNull]
public string ConnectionString { get; set; }
/// <summary>
/// The request timeout in seconds.
/// </summary>
public int ConnectionTimeout => 120;
/// <summary>
/// The database (partition) on the server to be used.
/// </summary>
public string Database { get; private set; }
/// <summary>
/// The connection state. It's always open since it's a stateless connection.
/// </summary>
public ConnectionState State => ConnectionState.Open;
/// <summary>
/// Starts the new storage transaction.
/// </summary>
/// <returns>A new <see cref="IDbTransaction"/>.</returns>
public IDbTransaction BeginTransaction()
{
return new TableTransaction(this);
}
/// <summary>
/// Starts the new storage transaction.
/// </summary>
/// <param name="il">The isolation level. This property is ignored on this connection since
/// it's always <see cref="IsolationLevel.Snapshot"/>.</param>
/// <returns>A new <see cref="IDbTransaction"/>.</returns>
public IDbTransaction BeginTransaction(IsolationLevel il)
{
return BeginTransaction();
}
/// <summary>
/// The database is actually the Partition on the remote service. Calling this method
/// changes the partition to be used on the remote.
/// </summary>
/// <param name="databaseName">The partition name. It is created if it doesn't exist.</param>
public void ChangeDatabase(string databaseName)
{
Database = databaseName;
}
/// <summary>
/// This method completes the connection by calling <see cref="IDbTransaction.Rollback"/>
/// if <see cref="IDbTransaction.Commit"/> has not been called.
/// </summary>
public void Close()
{
}
public IDbCommand CreateCommand()
{
return new TableDataCommand(Tables);
}
public void Dispose()
{
}
/// <summary>
/// This method doesn't do anything since the connection is stateless any is theoretically
/// always in open state.
/// </summary>
public void Open()
{
}
}

@ -0,0 +1,96 @@
using System.Data;
using System.Data.Common;
using System.Diagnostics.CodeAnalysis;
using System.Text;
using Connected.ServiceModel.Client.Data.Remote;
namespace Connected.ServiceModel.Client.Data;
internal sealed class TableDataCommand : DbCommand
{
public TableDataCommand(RemoteTableService tables)
{
Parameters = new DataParameterCollection();
Tables = tables;
}
public new DataParameterCollection Parameters { get; }
public RemoteTableService Tables { get; }
[AllowNull]
public override string CommandText { get; set; }
public override int CommandTimeout { get; set; } = 120;
public override CommandType CommandType { get; set; } = CommandType.Text;
protected override DbConnection? DbConnection { get; set; }
protected override DbParameterCollection DbParameterCollection => Parameters;
protected override DbTransaction? DbTransaction { get; set; }
public override bool DesignTimeVisible { get; set; }
public override UpdateRowSource UpdatedRowSource { get; set; }
protected override DbParameter CreateDbParameter()
{
return new TableDataParameter();
}
public override async Task<int> ExecuteNonQueryAsync(CancellationToken cancellationToken)
{
await Tables.Update(ParseCommandText());
return 0;
}
public override int ExecuteNonQuery()
{
AsyncUtils.RunSync(() => Tables.Update(ParseCommandText()));
return 0;
}
protected override async Task<DbDataReader> ExecuteDbDataReaderAsync(CommandBehavior behavior, CancellationToken cancellationToken)
{
return new TableDataReader(await Tables.Query(ParseCommandText()));
}
protected override DbDataReader ExecuteDbDataReader(CommandBehavior behavior)
{
return new TableDataReader(AsyncUtils.RunSync(() => Tables.Query(ParseCommandText())));
}
private string ParseCommandText()
{
var text = new StringBuilder(CommandText);
foreach (IDbDataParameter parameter in Parameters)
text = text.Replace(parameter.ParameterName, ParseValue(parameter));
return text.ToString();
}
private static string? ParseValue(IDbDataParameter parameter)
{
if (parameter.Value is null || parameter.Value == DBNull.Value)
return "null";
return parameter.DbType switch
{
DbType.AnsiString or DbType.String or DbType.AnsiStringFixedLength or DbType.StringFixedLength or DbType.Xml => $"'{parameter.Value}'",
_ => parameter.Value.ToString(),
};
}
public override void Cancel()
{
}
public override object? ExecuteScalar()
{
var reader = ExecuteReader();
if (reader.Read())
return reader[0];
return null;
}
public override void Prepare()
{
}
}

@ -0,0 +1,62 @@
using System.Data;
using System.Data.Common;
using Connected.Annotations;
using Connected.Data.Storage;
using Connected.ServiceModel.Client.Data.Remote;
namespace Connected.ServiceModel.Client.Data;
[ServiceRegistration(ServiceRegistrationMode.Auto, ServiceRegistrationScope.Transient)]
internal sealed class TableDataConnection : DatabaseConnection
{
public TableDataConnection(RemoteTableService tables, ICancellationContext context) : base(context)
{
Tables = tables;
}
private RemoteTableService Tables { get; }
protected override void SetupParameters(IStorageCommand command, IDbCommand cmd)
{
if (cmd.Parameters.Count > 0)
{
foreach (DbParameter i in cmd.Parameters)
i.Value = DBNull.Value;
return;
}
if (command.Operation.Parameters is null)
return;
foreach (var i in command.Operation.Parameters)
{
cmd.Parameters.Add(new TableDataParameter
{
ParameterName = i.Name,
DbType = i.Type,
Direction = i.Direction
});
}
}
protected override object? GetParameterValue(IDbCommand command, string parameterName)
{
if (command is TableDataCommand cmd)
return cmd.Parameters[parameterName].Value;
return null;
}
protected override void SetParameterValue(IDbCommand command, string parameterName, object? value)
{
if (command is TableDataCommand cmd)
cmd.Parameters[parameterName].Value = value;
}
protected override async Task<IDbConnection> OnCreateConnection()
{
await Task.CompletedTask;
return new TableConnection(Tables, ConnectionString);
}
}

@ -0,0 +1,20 @@
using System.Data;
using System.Data.Common;
namespace Connected.ServiceModel.Client.Data;
internal class TableDataParameter : DbParameter
{
public override DbType DbType { get; set; }
public override ParameterDirection Direction { get; set; }
public override bool IsNullable { get; set; }
public override string? ParameterName { get; set; }
public override int Size { get; set; }
public override string? SourceColumn { get; set; }
public override bool SourceColumnNullMapping { get; set; }
public override object? Value { get; set; }
public override void ResetDbType()
{
}
}

@ -0,0 +1,221 @@
using System.Collections;
using System.Data.Common;
using System.Diagnostics.CodeAnalysis;
using System.Text.Json.Nodes;
namespace Connected.ServiceModel.Client.Data;
internal sealed class TableDataReader : DbDataReader
{
public TableDataReader(JsonArray items)
{
Items = items;
}
public override object this[int ordinal] => throw new NotImplementedException();
public override object this[string name] => throw new NotImplementedException();
private JsonArray Items { get; }
private int Index { get; set; } = -1;
private JsonObject? Current => Index < 0 ? null : Items[Index] as JsonObject;
public override int Depth => 1;
public override int FieldCount => Current is null ? 0 : Current.Count;
public override bool HasRows => Items.Any();
public override bool IsClosed => false;
public override int RecordsAffected => Items.Count;
public override bool GetBoolean(int ordinal)
{
return GetValue<bool>(ordinal);
}
public override byte GetByte(int ordinal)
{
return GetValue<byte>(ordinal);
}
public override long GetBytes(int ordinal, long dataOffset, byte[]? buffer, int bufferOffset, int length)
{
var value = GetValue<string>(ordinal);
var bytes = Convert.FromBase64String(value);
buffer ??= new byte[bufferOffset + length];
for (var i = 0; i < length; i++)
buffer[bufferOffset + i] = bytes[dataOffset + i];
return length;
}
public override char GetChar(int ordinal)
{
return GetValue<char>(ordinal);
}
public override long GetChars(int ordinal, long dataOffset, char[]? buffer, int bufferOffset, int length)
{
var value = GetValue<string>(ordinal);
var bytes = Convert.FromBase64String(value);
buffer ??= new char[bufferOffset + length];
for (var i = 0; i < length; i++)
buffer[bufferOffset + i] = (char)bytes[dataOffset + i];
return length;
}
public override string GetDataTypeName(int ordinal)
{
/*
* TODO: resolve appropriate type
*/
return typeof(string).Name;
}
public override DateTime GetDateTime(int ordinal)
{
return GetValue<DateTime>(ordinal);
}
public override decimal GetDecimal(int ordinal)
{
return GetValue<decimal>(ordinal);
}
public override double GetDouble(int ordinal)
{
return GetValue<double>(ordinal);
}
public override IEnumerator GetEnumerator()
{
return Items.GetEnumerator();
}
[return: DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicFields | DynamicallyAccessedMemberTypes.PublicProperties)]
public override Type GetFieldType(int ordinal)
{
/*
* TODO: resolve appropriate type
*/
return typeof(string);
}
public override float GetFloat(int ordinal)
{
return GetValue<float>(ordinal);
}
public override Guid GetGuid(int ordinal)
{
return GetValue<Guid>(ordinal);
}
public override short GetInt16(int ordinal)
{
return GetValue<short>(ordinal);
}
public override int GetInt32(int ordinal)
{
return GetValue<int>(ordinal);
}
public override long GetInt64(int ordinal)
{
return GetValue<long>(ordinal);
}
public override string GetName(int ordinal)
{
if (Current is null)
throw new NullReferenceException();
if (Current.ElementAt(ordinal).Key is string key)
return key;
throw new NullReferenceException();
}
public override int GetOrdinal(string name)
{
if (Current is null)
throw new NullReferenceException();
for (var i = 0; i < Current.Count; i++)
{
if (string.Equals(Current.ElementAt(i).Key, name, StringComparison.OrdinalIgnoreCase))
return i;
}
return -1;
}
public override string GetString(int ordinal)
{
return GetValue<string>(ordinal);
}
public override object GetValue(int ordinal)
{
return GetValue<object>(ordinal);
}
public override int GetValues(object[] values)
{
if (Current is null)
throw new NullReferenceException();
for (var i = 0; i < Current.Count; i++)
{
var value = Current.ElementAt(i);
if (value.Value is not null)
values[i] = value.Value.AsValue().GetValue<object>();
}
return Current.Count;
}
public override bool IsDBNull(int ordinal)
{
return false;
}
public override bool NextResult()
{
return false;
}
public override bool Read()
{
if (Items.Count >= Index + 1)
{
Index++;
return true;
}
return false;
}
private T GetValue<T>(int ordinal)
{
return GetCurrentValue(ordinal).GetValue<T>();
}
private JsonValue GetCurrentValue(int ordinal)
{
if (Current is null)
throw new NullReferenceException();
if (Current.ElementAt(ordinal).Value is not JsonValue value)
throw new NullReferenceException();
return value;
}
}

@ -0,0 +1,74 @@
using System.Collections.Immutable;
using System.Data;
using Connected.Data.Storage;
using Connected.Entities.Storage;
namespace Connected.ServiceModel.Client.Data;
internal sealed class TableReader<T> : TableCommand, IStorageReader<T>
{
public TableReader(IStorageOperation operation, IStorageConnection connection)
: base(operation, connection)
{
}
public async Task<ImmutableList<T>?> Query()
{
if (Connection is null)
return default;
try
{
var result = await Connection.Query<T>(this);
if (Connection.Behavior == StorageConnectionMode.Isolated)
await Connection.Commit();
return result;
}
finally
{
if (Connection.Behavior == StorageConnectionMode.Isolated)
{
await Connection.Close();
await Connection.DisposeAsync();
Connection = null;
}
}
}
public async Task<T?> Select()
{
try
{
if (Connection is null)
return default;
var result = await Connection.Select<T>(this);
if (Connection.Behavior == StorageConnectionMode.Isolated)
await Connection.Commit();
return result;
}
finally
{
if (Connection.Behavior == StorageConnectionMode.Isolated)
{
await Connection.Close();
await Connection.DisposeAsync();
Connection = null;
}
}
}
public async Task<IDataReader> OpenReader()
{
if (Connection is null)
throw new NullReferenceException(nameof(Connection));
return await Connection.OpenReader(this);
}
}

@ -0,0 +1,55 @@
using Connected.Annotations;
using Connected.Data.Schema;
using Connected.Entities.Annotations;
using Connected.Entities.Storage;
using Connected.Interop;
using Connected.Middleware;
using Connected.ServiceModel.Client.Data.Remote;
using Connected.ServiceModel.Client.Data.Schema;
using Connected.ServiceModel.Client.Net;
using Connected.ServiceModel.Data;
namespace Connected.ServiceModel.Client.Data;
[Priority(2)]
internal sealed class TableSchemaMiddleware : MiddlewareComponent, ISchemaMiddleware
{
public TableSchemaMiddleware(IMiddlewareService middleware, IStorageProvider storage, RemoteTableService remote, IConnectedServer connected)
{
Storage = storage;
Remote = remote;
Connected = connected;
}
private IStorageProvider Storage { get; }
private RemoteTableService Remote { get; }
private IConnectedServer Connected { get; }
public Type ConnectionType => typeof(TableDataConnection);
public string DefaultConnectionString { get; private set; } = default!;
protected override async Task OnInitialize()
{
DefaultConnectionString = await Connected.SelectUrl(new ConnectedServerUrlArgs { Kind = ConnectedUrlKind.TableStorage });
}
public async Task<bool> IsEntitySupported(Type entityType)
{
await Task.CompletedTask;
/*
* This middleware supports all ITableEntity<> entities.
*/
return entityType.ImplementsInterface(typeof(ITableEntity<>));
}
public async Task Synchronize(Type entity, ISchema schema)
{
await Synchronize(schema, DefaultConnectionString);
}
private async Task Synchronize(ISchema schema, string connectionString)
{
var args = new SchemaExecutionContext(schema, Remote);
if (string.IsNullOrWhiteSpace(schema.Type) || string.Equals(schema.Type, SchemaAttribute.SchemaTypeTable, StringComparison.OrdinalIgnoreCase))
await new TableSynchronize().Execute(args);
}
}

@ -0,0 +1,114 @@
using System.Linq.Expressions;
using System.Reflection;
using Connected.Annotations;
using Connected.Data;
using Connected.Data.Storage;
using Connected.Entities;
using Connected.Entities.Storage;
using Connected.Expressions;
using Connected.Expressions.Evaluation;
using Connected.Expressions.Query;
using Connected.Expressions.Translation;
using Connected.Interop;
using Connected.ServiceModel.Data;
namespace Connected.ServiceModel.Client.Data;
[Priority(2)]
internal class TableStorageProvider : QueryProvider, IStorageExecutor, IStorageMiddleware
{
public TableStorageProvider(IStorageProvider storage)
{
Storage = storage;
}
private IStorageProvider Storage { get; }
protected override object? OnExecute(Expression expression)
{
return CreateExecutionPlan(expression).Compile()(this);
}
private static Expression<Func<IStorageExecutor, object>> CreateExecutionPlan(Expression expression)
{
var lambda = expression as LambdaExpression;
if (lambda is not null)
expression = lambda.Body;
var context = new ExpressionCompilationContext(new CqlLanguage());
var translator = new Translator(context);
var translation = translator.Translate(expression);
var parameters = lambda?.Parameters;
var provider = Resolve(expression, parameters, typeof(IStorage<>));
if (provider is null)
{
var rootQueryable = Resolve(expression, parameters, typeof(IQueryable));
provider = Expression.Property(rootQueryable, typeof(IQueryable).GetTypeInfo().GetDeclaredProperty(nameof(IQueryable.Provider)));
}
return ExecutionBuilder.Build(context, new CqlLinguist(context, CqlLanguage.Default, translator), translation, provider);
}
/// <summary>
/// Find the expression of the specified type, either in the specified expression or parameters.
/// </summary>
private static Expression Resolve(Expression expression, IList<ParameterExpression> parameters, Type type)
{
if (parameters is not null)
{
var found = parameters.FirstOrDefault(p => type.IsAssignableFrom(p.Type));
if (found is not null)
return found;
}
return SubtreeResolver.Resolve(expression, type);
}
public IEnumerable<TResult?> Execute<TResult>(IStorageOperation operation)
where TResult : IEntity
{
var result = Storage.Open<TResult>().Query(new StorageContextArgs(operation));
if (result.IsCompleted)
return result.Result;
var r = result.GetAwaiter().GetResult();
return r;
}
public bool SupportsEntity(Type entityType)
{
return entityType.ImplementsInterface(typeof(ITableEntity<>));
}
public IStorageOperation CreateOperation<TEntity>(TEntity entity)
where TEntity : IEntity
{
var builder = new AggregatedCommandBuilder<TEntity?>();
if (builder.Build(entity) is not StorageOperation operation)
throw new NullReferenceException(nameof(StorageOperation));
return operation;
}
public IStorageReader<TEntity> OpenReader<TEntity>(IStorageOperation operation, IStorageConnection connection)
{
return new TableReader<TEntity>(operation, connection);
}
public IStorageWriter OpenWriter(IStorageOperation operation, IStorageConnection connection)
{
return new TableWriter(operation, connection);
}
public async Task Initialize()
{
await Task.CompletedTask;
}
}

@ -0,0 +1,59 @@
using System.Data;
namespace Connected.ServiceModel.Client.Data;
/// <summary>
/// Defines the transaction on the remote table storage.
/// </summary>
/// <remarks>
/// Connection write operations using this transaction are queued until
/// the <see cref="Commit"/> is called.
/// </remarks>
internal class TableTransaction : IDbTransaction
{
/// <summary>
/// Creates new <see cref="TableTransaction"/> object.
/// </summary>
/// <param name="connection">The storage connection associated with the transaction.</param>
public TableTransaction(IDbConnection connection)
{
Connection = connection;
}
/// <summary>
/// The storage connection that created the transaction.
/// </summary>
/// <remarks>
/// Multiple connections can use the transaction, but only one is directly associated with the transaction.
/// </remarks>
public IDbConnection? Connection { get; }
/// <summary>
/// The isolation level of the transaction. It's always <see cref="IsolationLevel.Snapshot"/> on this transaction.
/// </summary>
public IsolationLevel IsolationLevel { get; } = IsolationLevel.Snapshot;
/// <summary>
/// Commits this transaction. This call actually performs a REST call to the remote service.
/// </summary>
/// <exception cref="NotImplementedException"></exception>
public void Commit()
{
throw new NotImplementedException();
}
/// <summary>
/// Disposes the <see cref="TableTransaction"/> object.
/// </summary>
public void Dispose()
{
/*
* Nothing really to do here.
*/
}
/// <summary>
/// Rolls back any changes made in this transaction.
/// </summary>
public void Rollback()
{
/*
* This call doesm't have to do enything since we weren't perform
* any calls to the remote service. We just discard the operations.
*/
}
}

@ -0,0 +1,38 @@
using Connected.Data.Storage;
using Connected.Entities.Storage;
namespace Connected.ServiceModel.Client.Data;
internal sealed class TableWriter : TableCommand, IStorageWriter
{
public TableWriter(IStorageOperation operation, IStorageConnection connection)
: base(operation, connection)
{
}
public async Task<int> Execute()
{
if (Connection is null)
return -1;
try
{
var recordsAffected = await Connection.Execute(this);
if (Connection.Behavior == StorageConnectionMode.Isolated)
await Connection.Commit();
return recordsAffected;
}
finally
{
if (Connection.Behavior == StorageConnectionMode.Isolated)
{
await Connection.Close();
await Connection.DisposeAsync();
Connection = null;
}
}
}
}

@ -0,0 +1,77 @@
using System.Collections.Concurrent;
using System.Reflection;
using Connected.Entities.Annotations;
using Connected.Entities.Storage;
namespace Connected.ServiceModel.Client.Data;
internal sealed class UpdateCommandBuilder : CommandBuilder
{
private static readonly ConcurrentDictionary<string, StorageOperation> _cache;
static UpdateCommandBuilder()
{
_cache = new();
}
private static ConcurrentDictionary<string, StorageOperation> Cache => _cache;
private bool SupportsConcurrency { get; set; }
protected override bool TryGetExisting(out StorageOperation? result)
{
return Cache.TryGetValue(Entity.GetType().FullName, out result);
}
protected override StorageOperation OnBuild()
{
WriteLine($"UPDATE [{Schema.Schema}].[{Schema.Name}] SET");
WriteAssignments();
WriteWhere();
Trim();
Write(';');
var result = new StorageOperation { CommandText = CommandText, Concurrency = SupportsConcurrency ? DataConcurrencyMode.Enabled : DataConcurrencyMode.Disabled };
foreach (var parameter in Parameters)
result.AddParameter(parameter);
Cache.TryAdd(Entity.GetType().FullName, result);
return result;
}
private void WriteAssignments()
{
foreach (var property in Properties)
{
if (property.GetCustomAttribute<PrimaryKeyAttribute>() is not null)
{
WhereProperties.Add(property);
continue;
}
var parameter = CreateParameter(property);
WriteLine($"{ColumnName(property)} = {parameter.Name},");
}
Trim();
}
private void WriteWhere()
{
WriteLine(string.Empty);
for (var i = 0; i < WhereProperties.Count; i++)
{
var property = WhereProperties[i];
var parameter = CreateParameter(property);
if (i == 0)
WriteLine($" WHERE {ColumnName(property)} = {parameter.Name}");
else
WriteLine($" AND {ColumnName(property)} = {parameter.Name}");
}
}
}

@ -0,0 +1,15 @@
using Connected.Annotations;
using Connected.ServiceModel.Storage;
using Microsoft.Extensions.DependencyInjection;
[assembly: MicroService(MicroServiceType.Provider)]
namespace Connected.ServiceModel.Client.Storage;
internal class Bootstrapper : Startup
{
protected override void OnConfigureServices(IServiceCollection services)
{
services.AddScoped(typeof(IStorageService), typeof(StorageService));
}
}

@ -0,0 +1,16 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net7.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\..\..\connected.framework.servicemodel\src\Connected.ServiceModel\Connected.ServiceModel.csproj" />
<ProjectReference Include="..\..\..\connected.framework\src\Connected.Entities\Connected.Entities.csproj" />
<ProjectReference Include="..\..\..\connected.framework\src\Connected.Services\Connected.Services.csproj" />
<ProjectReference Include="..\Connected.ServiceModel.Client\Connected.ServiceModel.Client.csproj" />
</ItemGroup>
</Project>

@ -0,0 +1,28 @@
using Connected.Net;
using Connected.ServiceModel.Client.Net;
using Connected.ServiceModel.Client.Subscription;
using Connected.ServiceModel.Storage;
using Connected.Services;
namespace Connected.ServiceModel.Client.Storage;
internal sealed class DeleteDirectory : ServiceAction<DeleteDirectoryArgs>
{
public DeleteDirectory(ISubscriptionService subscription, IHttpService http, IConnectedServer server, ICancellationContext cancel)
{
Subscription = subscription;
Http = http;
Server = server;
Cancel = cancel;
}
public ISubscriptionService Subscription { get; }
public IHttpService Http { get; }
public IConnectedServer Server { get; }
public ICancellationContext Cancel { get; }
protected override async Task OnInvoke()
{
await Http.Post(await Server.SelectUrl(new ConnectedServerUrlArgs { Kind = ConnectedUrlKind.FileSystem }), Arguments, Cancel.CancellationToken);
}
}

@ -0,0 +1,57 @@
using System.Collections.Immutable;
using Connected.ServiceModel.Storage;
using Connected.Services;
namespace Connected.ServiceModel.Client.Storage;
internal class StorageService : Service, IStorageService
{
public StorageService(IContext context) : base(context)
{
}
public async Task DeleteDirectory(DeleteDirectoryArgs args)
{
await Invoke(GetOperation<DeleteDirectory>(), args);
}
public Task DeleteFile(DeleteFileArgs args)
{
throw new NotImplementedException();
}
public Task InsertDirectory(InsertDirectoryArgs args)
{
throw new NotImplementedException();
}
public Task MoveFile(MoveFileArgs args)
{
throw new NotImplementedException();
}
public Task<ImmutableList<IDirectory>?> QueryDirectories(DirectoryArgs args)
{
throw new NotImplementedException();
}
public Task<ImmutableList<IFile>?> QueryFiles(DirectoryArgs args)
{
throw new NotImplementedException();
}
public Task<byte[]?> SelectFile(FileArgs args)
{
throw new NotImplementedException();
}
public Task UpdateDirectory(UpdateDirectoryArgs args)
{
throw new NotImplementedException();
}
public Task UpdateFile(UpdateFileArgs args)
{
throw new NotImplementedException();
}
}

@ -0,0 +1,16 @@
using Connected.Annotations;
using Connected.ServiceModel.Client.Subscription;
using Microsoft.Extensions.DependencyInjection;
[assembly: MicroService(MicroServiceType.Provider)]
namespace Connected.ServiceModel.Client.Net;
internal class Bootstrapper : Startup
{
protected override void OnConfigureServices(IServiceCollection services)
{
services.AddScoped(typeof(IConnectedServer), typeof(ConnectedServer));
services.AddScoped(typeof(ISubscriptionService), typeof(SubscriptionService));
}
}

@ -0,0 +1,14 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net7.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\..\..\connected.framework\src\Connected.Entities\Connected.Entities.csproj" />
<ProjectReference Include="..\..\..\connected.framework\src\Connected.Services\Connected.Services.csproj" />
</ItemGroup>
</Project>

@ -0,0 +1,15 @@
using Connected.Services;
namespace Connected.ServiceModel.Client.Net;
internal class ConnectedServer : Service, IConnectedServer
{
public ConnectedServer(IContext context) : base(context)
{
}
public async Task<string?> SelectUrl(ConnectedServerUrlArgs args)
{
return await Invoke(GetOperation<SelectUrl>(), args);
}
}

@ -0,0 +1,13 @@
namespace Connected.ServiceModel.Client.Net;
public enum ConnectedUrlKind
{
Root = 0,
FileSystem = 1,
TableStorage = 2
}
public sealed class ConnectedServerUrlArgs : Dto
{
public ConnectedUrlKind Kind { get; set; } = ConnectedUrlKind.Root;
}

@ -0,0 +1,20 @@
using Connected.Services;
namespace Connected.ServiceModel.Client.Net;
internal sealed class SelectUrl : ServiceFunction<ConnectedServerUrlArgs, string?>
{
private const string Root = "https://localhost:7069";//"https://connected.tompit.com";
protected override async Task<string?> OnInvoke()
{
await Task.CompletedTask;
return Arguments.Kind switch
{
ConnectedUrlKind.Root => Root,
ConnectedUrlKind.FileSystem => $"{Root}/services/fileSystem",
ConnectedUrlKind.TableStorage => $"{Root}/services/tables",
_ => throw new NotImplementedException(),
};
}
}

@ -0,0 +1,6 @@
namespace Connected.ServiceModel.Client.Net;
public interface IConnectedServer
{
Task<string?> SelectUrl(ConnectedServerUrlArgs args);
}

@ -0,0 +1,7 @@
using Connected.Data;
namespace Connected.ServiceModel.Client.Subscription;
public interface ISubscription : IPrimaryKey<int>
{
}

@ -0,0 +1,6 @@
namespace Connected.ServiceModel.Client.Subscription;
public interface ISubscriptionService
{
Task<ISubscription?> Select();
}

@ -0,0 +1,9 @@
using Connected.Entities;
using Connected.Entities.Annotations;
namespace Connected.ServiceModel.Client.Subscription;
[Persistence(Persistence = ColumnPersistence.InMemory)]
internal record Subscription : Entity<int>, ISubscription
{
}

@ -0,0 +1,16 @@
using Connected.Services;
namespace Connected.ServiceModel.Client.Subscription;
internal sealed class SelectSubscription : ServiceFunction<IDto, ISubscription?>
{
protected override async Task<ISubscription?> OnInvoke()
{
await Task.CompletedTask;
return new Subscription
{
Id = 1
};
}
}

@ -0,0 +1,15 @@
using Connected.Services;
namespace Connected.ServiceModel.Client.Subscription;
internal class SubscriptionService : Service, ISubscriptionService
{
public SubscriptionService(IContext context) : base(context)
{
}
public async Task<ISubscription?> Select()
{
return await Invoke(GetOperation<SelectSubscription>(), Dto.Empty);
}
}
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