/// <summary>
/// This internal method ensures that the specified type is a scalar
/// type supported by the underlying provider by ensuring that scalar
/// metadata for this type is retrievable.
/// </summary>
internal bool ValidateParameterType(ClrPerspective perspective)
{
TypeUsage type;
// The parameter type metadata is only valid if it's scalar or enumeration type metadata.
if ((perspective.TryGetType(_mappableType, out type)) &&
(TypeSemantics.IsScalarType(type)))
{
return(true);
}
return(false);
}
// <summary>
// Constructs a EntityParameter from a CQT parameter.
// </summary>
private static EntityParameter CreateEntityParameterFromQueryParameter(KeyValuePair <string, TypeUsage> queryParameter)
{
// We really can't have a parameter here that isn't a scalar type...
Debug.Assert(TypeSemantics.IsScalarType(queryParameter.Value), "Non-scalar type used as query parameter type");
var result = new EntityParameter();
result.ParameterName = queryParameter.Key;
PopulateParameterFromTypeUsage(result, queryParameter.Value, isOutParam: false);
return(result);
}
internal VarInfo CreatePrimitiveTypeVarInfo(Var v, Var newVar)
{
DebugCheck.NotNull(v);
DebugCheck.NotNull(newVar);
PlanCompiler.Assert(TypeSemantics.IsScalarType(v.Type), "The current variable should be of primitive or enum type.");
PlanCompiler.Assert(TypeSemantics.IsScalarType(newVar.Type), "The new variable should be of primitive or enum type.");
VarInfo varInfo = new PrimitiveTypeVarInfo(newVar);
m_map.Add(v, varInfo);
return(varInfo);
}
/// <summary>
/// Determine whether the given CLR type is legal for an ObjectParameter or constant
/// DbExpression.
/// </summary>
private bool TryGetTypeUsageForTerminal(Type type, out TypeUsage typeUsage)
{
EntityUtil.CheckArgumentNull(type, "type");
if (_rootContext.Perspective.TryGetTypeByName(TypeSystem.GetNonNullableType(type).FullName,
false, // bIgnoreCase
out typeUsage) &&
(TypeSemantics.IsScalarType(typeUsage)))
{
return(true);
}
typeUsage = null;
return(false);
}
/// <summary>
/// Determine whether the given CLR type is legal for an ObjectParameter or constant
/// DbExpression.
/// </summary>
private bool TryGetTypeUsageForTerminal(Type type, out TypeUsage typeUsage)
{
DebugCheck.NotNull(type);
if (_rootContext.Perspective.TryGetTypeByName(
TypeSystem.GetNonNullableType(type).FullNameWithNesting(),
false, // bIgnoreCase
out typeUsage)
&&
(TypeSemantics.IsScalarType(typeUsage)))
{
return(true);
}
typeUsage = null;
return(false);
}
public FunctionImportMappingComposable(
EdmFunction functionImport,
EdmFunction targetFunction,
List <Tuple <StructuralType, List <StorageConditionPropertyMapping>, List <StoragePropertyMapping> > > structuralTypeMappings)
: base(functionImport, targetFunction)
{
if (!functionImport.IsComposableAttribute)
{
throw new ArgumentException(Strings.NonComposableFunctionCannotBeMappedAsComposable("functionImport"));
}
if (!targetFunction.IsComposableAttribute)
{
throw new ArgumentException(Strings.NonComposableFunctionCannotBeMappedAsComposable("targetFunction"));
}
if (functionImport.EntitySet != null)
{
throw new NotSupportedException(Strings.ComposableFunctionImportsReturningEntitiesNotSupported);
}
EdmType resultType;
if (!MetadataHelper.TryGetFunctionImportReturnType(functionImport, 0, out resultType))
{
throw new ArgumentException(Strings.InvalidReturnTypeForComposableFunction);
}
if (!TypeSemantics.IsScalarType(resultType) &&
(structuralTypeMappings == null || structuralTypeMappings.Count == 0))
{
throw new ArgumentException(Strings.StructuralTypeMappingsMustNotBeNullForFunctionImportsReturingNonScalarValues);
}
m_structuralTypeMappings = structuralTypeMappings;
}
public override void Visit(DbConstantExpression e)
{
Debug.Assert(TypeSemantics.IsScalarType(e.ResultType), "Non-scalar type constant expressions are not supported.");
var primitive = TypeHelpers.GetPrimitiveTypeUsageForScalar(e.ResultType);
switch (((PrimitiveType)primitive.EdmType).PrimitiveTypeKind)
{
case PrimitiveTypeKind.Binary:
var byteArray = e.Value as byte[];
if (byteArray != null)
{
_key.Append("'");
foreach (byte b in byteArray)
{
_key.AppendFormat("{0:X2}", b);
}
_key.Append("'");
}
else
{
throw new NotSupportedException();
}
break;
case PrimitiveTypeKind.String:
var @string = e.Value as string;
if (@string != null)
{
_key.Append("'");
_key.Append(@string.Replace("'", "''"));
_key.Append("'");
}
else
{
throw new NotSupportedException();
}
break;
case PrimitiveTypeKind.Boolean:
case PrimitiveTypeKind.Byte:
case PrimitiveTypeKind.DateTime:
case PrimitiveTypeKind.Decimal:
case PrimitiveTypeKind.Double:
case PrimitiveTypeKind.Guid:
case PrimitiveTypeKind.Single:
case PrimitiveTypeKind.SByte:
case PrimitiveTypeKind.Int16:
case PrimitiveTypeKind.Int32:
case PrimitiveTypeKind.Int64:
case PrimitiveTypeKind.Time:
case PrimitiveTypeKind.DateTimeOffset:
_key.AppendFormat(CultureInfo.InvariantCulture, "{0}", e.Value);
break;
case PrimitiveTypeKind.Geometry:
case PrimitiveTypeKind.GeometryPoint:
case PrimitiveTypeKind.GeometryLineString:
case PrimitiveTypeKind.GeometryPolygon:
case PrimitiveTypeKind.GeometryMultiPoint:
case PrimitiveTypeKind.GeometryMultiLineString:
case PrimitiveTypeKind.GeometryMultiPolygon:
case PrimitiveTypeKind.GeometryCollection:
var geometry = e.Value as DbGeometry;
if (geometry != null)
{
_key.Append(geometry.AsText());
}
else
{
throw new NotSupportedException();
}
break;
case PrimitiveTypeKind.Geography:
case PrimitiveTypeKind.GeographyPoint:
case PrimitiveTypeKind.GeographyLineString:
case PrimitiveTypeKind.GeographyPolygon:
case PrimitiveTypeKind.GeographyMultiPoint:
case PrimitiveTypeKind.GeographyMultiLineString:
case PrimitiveTypeKind.GeographyMultiPolygon:
case PrimitiveTypeKind.GeographyCollection:
var geography = e.Value as DbGeography;
if (geography != null)
{
_key.Append(geography.AsText());
}
else
{
throw new NotSupportedException();
}
break;
default:
throw new NotSupportedException();
}
_key.Append(":");
_key.Append(e.ResultType.Identity);
}
/// <summary>
/// Initializes a new FunctionImportMappingComposable instance.
/// </summary>
/// <param name="functionImport">The model function import.</param>
/// <param name="targetFunction">The store composable function.</param>
/// <param name="resultMapping">The result mapping for the function import.</param>
/// <param name="containerMapping">The parent container mapping.</param>
public FunctionImportMappingComposable(
EdmFunction functionImport,
EdmFunction targetFunction,
FunctionImportResultMapping resultMapping,
EntityContainerMapping containerMapping)
: base(
Check.NotNull(functionImport, "functionImport"),
Check.NotNull(targetFunction, "targetFunction"))
{
Check.NotNull(resultMapping, "resultMapping");
Check.NotNull(containerMapping, "containerMapping");
if (!functionImport.IsComposableAttribute)
{
throw new ArgumentException(Strings.NonComposableFunctionCannotBeMappedAsComposable("functionImport"));
}
if (!targetFunction.IsComposableAttribute)
{
throw new ArgumentException(Strings.NonComposableFunctionCannotBeMappedAsComposable("targetFunction"));
}
EdmType resultType;
if (!MetadataHelper.TryGetFunctionImportReturnType(functionImport, 0, out resultType))
{
throw new ArgumentException(Strings.InvalidReturnTypeForComposableFunction);
}
// when this method is invoked when a CodeFirst model is being built (e.g. from a custom convention) the
// StorageMappingItemCollection will be null. In this case we can call the converting method directly which
// will return the correct result but the result won't be memoized. This however does not matter at this
// point since the model is still being constructed.
var cTypeTargetFunction =
containerMapping.StorageMappingItemCollection != null
? containerMapping.StorageMappingItemCollection.StoreItemCollection.ConvertToCTypeFunction(targetFunction)
: StoreItemCollection.ConvertFunctionSignatureToCType(targetFunction);
var cTypeTvfElementType = TypeHelpers.GetTvfReturnType(cTypeTargetFunction);
var sTypeTvfElementType = TypeHelpers.GetTvfReturnType(targetFunction);
if (cTypeTvfElementType == null)
{
Debug.Assert(sTypeTvfElementType == null);
throw new ArgumentException(
Strings.Mapping_FunctionImport_ResultMapping_InvalidSType(functionImport.Identity),
"functionImport");
}
var errors = new List <EdmSchemaError>();
var functionImportHelper = new FunctionImportMappingComposableHelper(
containerMapping,
String.Empty,
errors);
FunctionImportMappingComposable mapping;
if (Helper.IsStructuralType(resultType))
{
functionImportHelper.TryCreateFunctionImportMappingComposableWithStructuralResult(
functionImport,
cTypeTargetFunction,
resultMapping.SourceList,
cTypeTvfElementType,
sTypeTvfElementType,
LineInfo.Empty,
out mapping);
}
else
{
Debug.Assert(TypeSemantics.IsScalarType(resultType));
Debug.Assert(resultMapping.TypeMappings.Count == 0);
functionImportHelper.TryCreateFunctionImportMappingComposableWithScalarResult(
functionImport,
cTypeTargetFunction,
targetFunction,
resultType,
cTypeTvfElementType,
LineInfo.Empty,
out mapping);
}
if (mapping == null)
{
throw new InvalidOperationException(errors.Count > 0 ? errors[0].Message : String.Empty);
}
_containerMapping = mapping._containerMapping;
m_commandParameters = mapping.m_commandParameters;
m_structuralTypeMappings = mapping.m_structuralTypeMappings;
m_targetFunctionKeys = mapping.m_targetFunctionKeys;
_resultMapping = resultMapping;
}
internal FunctionImportMappingComposable(
EdmFunction functionImport,
EdmFunction targetFunction,
List <Tuple <StructuralType, List <ConditionPropertyMapping>, List <PropertyMapping> > > structuralTypeMappings,
EdmProperty[] targetFunctionKeys,
EntityContainerMapping containerMapping)
: base(functionImport, targetFunction)
{
DebugCheck.NotNull(containerMapping);
Debug.Assert(functionImport.IsComposableAttribute, "functionImport.IsComposableAttribute");
Debug.Assert(targetFunction.IsComposableAttribute, "targetFunction.IsComposableAttribute");
Debug.Assert(
functionImport.EntitySet == null || structuralTypeMappings != null,
"Function import returning entities must have structuralTypeMappings.");
Debug.Assert(
structuralTypeMappings == null || structuralTypeMappings.Count > 0, "Non-null structuralTypeMappings must not be empty.");
EdmType resultType;
Debug.Assert(
structuralTypeMappings != null ||
MetadataHelper.TryGetFunctionImportReturnType(functionImport, 0, out resultType) && TypeSemantics.IsScalarType(resultType),
"Either type mappings should be specified or the function import should be Collection(Scalar).");
Debug.Assert(
functionImport.EntitySet == null || targetFunctionKeys != null,
"Keys must be inferred for a function import returning entities.");
Debug.Assert(targetFunctionKeys == null || targetFunctionKeys.Length > 0, "Keys must be null or non-empty.");
_containerMapping = containerMapping;
// We will use these parameters to target s-space function calls in the generated command tree.
// Since enums don't exist in s-space we need to use the underlying type.
m_commandParameters =
functionImport.Parameters.Select(p => TypeHelpers.GetPrimitiveTypeUsageForScalar(p.TypeUsage).Parameter(p.Name)).ToArray();
m_structuralTypeMappings = structuralTypeMappings;
m_targetFunctionKeys = targetFunctionKeys;
}
private bool TryGetTypeUsageForTerminal(Expression expression, out TypeUsage typeUsage)
{
Type type = expression.Type;
if (this._rootContext.Perspective.TryGetTypeByName(TypeSystem.GetNonNullableType(type).FullNameWithNesting(), false, out typeUsage) && TypeSemantics.IsScalarType(typeUsage))
{
if (expression.NodeType == ExpressionType.Convert)
{
type = ((UnaryExpression)expression).Operand.Type;
}
if (type.IsValueType && Nullable.GetUnderlyingType(type) == (Type)null && TypeSemantics.IsNullable(typeUsage))
{
typeUsage = typeUsage.ShallowCopy(new FacetValues()
{
Nullable = (FacetValueContainer <bool?>) new bool?(false)
});
}
return(true);
}
typeUsage = (TypeUsage)null;
return(false);
}
internal static bool IsValidInOpType(TypeUsage typeUsage)
{
return(TypeSemantics.IsReferenceType(typeUsage) ||
TypeSemantics.IsEntityType(typeUsage) ||
TypeSemantics.IsScalarType(typeUsage));
}
/// <summary>
/// Initializes a new FunctionImportMappingComposable instance.
/// </summary>
/// <param name="functionImport">The model function import.</param>
/// <param name="targetFunction">The store composable function.</param>
/// <param name="resultMapping">The result mapping for the function import.</param>
/// <param name="containerMapping">The parent container mapping.</param>
public FunctionImportMappingComposable(
EdmFunction functionImport,
EdmFunction targetFunction,
FunctionImportResultMapping resultMapping,
EntityContainerMapping containerMapping)
: base(
Check.NotNull(functionImport, "functionImport"),
Check.NotNull(targetFunction, "targetFunction"))
{
Check.NotNull(resultMapping, "resultMapping");
Check.NotNull(containerMapping, "containerMapping");
if (!functionImport.IsComposableAttribute)
{
throw new ArgumentException(Strings.NonComposableFunctionCannotBeMappedAsComposable("functionImport"));
}
if (!targetFunction.IsComposableAttribute)
{
throw new ArgumentException(Strings.NonComposableFunctionCannotBeMappedAsComposable("targetFunction"));
}
if (functionImport.EntitySet != null)
{
throw new NotSupportedException(Strings.ComposableFunctionImportsReturningEntitiesNotSupported);
}
EdmType resultType;
if (!MetadataHelper.TryGetFunctionImportReturnType(functionImport, 0, out resultType))
{
throw new ArgumentException(Strings.InvalidReturnTypeForComposableFunction);
}
// Function mapping is allowed only for TVFs on the s-space.
var cTypeTargetFunction = containerMapping.StorageMappingItemCollection.StoreItemCollection.ConvertToCTypeFunction(targetFunction);
var cTypeTvfElementType = TypeHelpers.GetTvfReturnType(cTypeTargetFunction);
var sTypeTvfElementType = TypeHelpers.GetTvfReturnType(targetFunction);
if (cTypeTvfElementType == null)
{
Debug.Assert(sTypeTvfElementType == null);
throw new ArgumentException(
Strings.Mapping_FunctionImport_ResultMapping_InvalidSType(functionImport.Identity),
"functionImport");
}
var errors = new List <EdmSchemaError>();
var functionImportHelper = new FunctionImportMappingComposableHelper(
containerMapping,
String.Empty,
errors);
FunctionImportMappingComposable mapping;
if (Helper.IsStructuralType(resultType))
{
functionImportHelper.TryCreateFunctionImportMappingComposableWithStructuralResult(
functionImport,
cTypeTargetFunction,
resultMapping.SourceList,
cTypeTvfElementType,
sTypeTvfElementType,
LineInfo.Empty,
out mapping);
}
else
{
Debug.Assert(TypeSemantics.IsScalarType(resultType));
Debug.Assert(resultMapping.TypeMappings.Count == 0);
functionImportHelper.TryCreateFunctionImportMappingComposableWithScalarResult(
functionImport,
cTypeTargetFunction,
targetFunction,
resultType,
cTypeTvfElementType,
LineInfo.Empty,
out mapping);
}
if (mapping == null)
{
throw new InvalidOperationException(errors.Count > 0 ? errors[0].Message : String.Empty);
}
_containerMapping = mapping._containerMapping;
m_commandParameters = mapping.m_commandParameters;
m_structuralTypeMappings = mapping.m_structuralTypeMappings;
m_targetFunctionKeys = mapping.m_targetFunctionKeys;
_resultMapping = resultMapping;
}
internal static bool IsValidIsNullOpType(TypeUsage typeUsage)
{
if (!TypeSemantics.IsReferenceType(typeUsage) && !TypeSemantics.IsEntityType(typeUsage) && !TypeSemantics.IsScalarType(typeUsage))
{
return(TypeSemantics.IsRowType(typeUsage));
}
return(true);
}
internal bool ValidateParameterType(ClrPerspective perspective)
{
TypeUsage outTypeUsage;
return(perspective.TryGetType(this._mappableType, out outTypeUsage) && TypeSemantics.IsScalarType(outTypeUsage));
}
