/// <summary>
/// Factory method for creating a type usage for underlying type of enum type usage.
/// </summary>
/// <param name="enumTypeUsage"> Enum type usage used to create an underlying type usage of. </param>
/// <returns> Type usage for the underlying enum type. </returns>
internal static TypeUsage CreateEnumUnderlyingTypeUsage(TypeUsage enumTypeUsage)
{
DebugCheck.NotNull(enumTypeUsage);
Debug.Assert(TypeSemantics.IsEnumerationType(enumTypeUsage), "enumTypeUsage is not an enumerated type");
return(TypeUsage.Create(Helper.GetUnderlyingEdmTypeForEnumType(enumTypeUsage.EdmType), enumTypeUsage.Facets));
}
internal DbConstantExpression(TypeUsage resultType, object value)
: base(DbExpressionKind.Constant, resultType)
{
Debug.Assert(value != null, "DbConstantExpression value cannot be null");
Debug.Assert(TypeSemantics.IsScalarType(resultType), "DbConstantExpression must have a primitive or enum value");
Debug.Assert(!value.GetType().IsEnum || TypeSemantics.IsEnumerationType(resultType), "value is an enum while the result type is not of enum type.");
Debug.Assert(Helper.AsPrimitive(resultType.EdmType).ClrEquivalentType == (value.GetType().IsEnum ? value.GetType().GetEnumUnderlyingType() : value.GetType()),
"the type of the value has to match the result type (for enum types only underlying types are compared).");
// binary values should be cloned before use
PrimitiveType primitiveType;
this._shouldCloneValue = TypeHelpers.TryGetEdmType <PrimitiveType>(resultType, out primitiveType) &&
primitiveType.PrimitiveTypeKind == PrimitiveTypeKind.Binary;
if (this._shouldCloneValue)
{
// DevDiv#480416: DbConstantExpression with a binary value is not fully immutable
//
this._value = ((byte[])value).Clone();
}
else
{
this._value = value;
}
}
internal DbConstantExpression(TypeUsage resultType, object value)
: base(DbExpressionKind.Constant, resultType)
{
DebugCheck.NotNull(value);
Debug.Assert(TypeSemantics.IsScalarType(resultType), "DbConstantExpression must have a primitive or enum value");
Debug.Assert(
!value.GetType().IsEnum() || TypeSemantics.IsEnumerationType(resultType),
"value is an enum while the result type is not of enum type.");
Debug.Assert(
Helper.AsPrimitive(resultType.EdmType).ClrEquivalentType
== (value.GetType().IsEnum() ? value.GetType().GetEnumUnderlyingType() : value.GetType()),
"the type of the value has to match the result type (for enum types only underlying types are compared).");
// binary values should be cloned before use
PrimitiveType primitiveType;
_shouldCloneValue = TypeHelpers.TryGetEdmType(resultType, out primitiveType) &&
primitiveType.PrimitiveTypeKind == PrimitiveTypeKind.Binary;
if (_shouldCloneValue)
{
// DevDiv#480416: DbConstantExpression with a binary value is not fully immutable
// CONSIDER: Adding an immutable Binary type or using System.Data.Linq.Binary
_value = ((byte[])value).Clone();
}
else
{
_value = value;
}
}
internal static TypeUsage GetPrimitiveTypeUsageForScalar(TypeUsage scalarType)
{
if (!TypeSemantics.IsEnumerationType(scalarType))
{
return(scalarType);
}
return(TypeHelpers.CreateEnumUnderlyingTypeUsage(scalarType));
}
internal MetadataMember ResolveMetadataMemberAccess(MetadataMember qualifier, string name, ErrorContext errCtx)
{
var fullName = GetFullName(qualifier.Name, name);
if (qualifier.MetadataMemberClass
== MetadataMemberClass.Namespace)
{
//
// Try resolving as a type.
//
MetadataType type;
if (TryGetTypeFromMetadata(fullName, out type))
{
return(type);
}
//
// Try resolving as a function.
//
MetadataFunctionGroup function;
if (TryGetFunctionFromMetadata(qualifier.Name, name, out function))
{
return(function);
}
//
// Otherwise, resolve as a namespace.
//
return(new MetadataNamespace(fullName));
}
else if (qualifier.MetadataMemberClass
== MetadataMemberClass.Type)
{
var type = (MetadataType)qualifier;
if (TypeSemantics.IsEnumerationType(type.TypeUsage))
{
EnumMember member;
if (_perspective.TryGetEnumMember(
(EnumType)type.TypeUsage.EdmType, name, _parserOptions.NameComparisonCaseInsensitive /*ignoreCase*/, out member))
{
Debug.Assert(member != null, "member != null");
Debug.Assert(
_parserOptions.NameComparer.Equals(name, member.Name), "_parserOptions.NameComparer.Equals(name, member.Name)");
return(new MetadataEnumMember(fullName, type.TypeUsage, member));
}
else
{
var message = Strings.NotAMemberOfType(name, qualifier.Name);
throw EntitySqlException.Create(errCtx, message, null);
}
}
}
var message1 = Strings.InvalidMetadataMemberClassResolution(
qualifier.Name, qualifier.MetadataMemberClassName, MetadataNamespace.NamespaceClassName);
throw EntitySqlException.Create(errCtx, message1, null);
}
/// <summary>
/// Gets primitive type usage for <paramref name="scalarType" />.
/// </summary>
/// <param name="scalarType"> Primitive or enum type usage. </param>
/// <returns>
/// Primitive type usage for <paramref name="scalarType" /> .
/// </returns>
/// <remarks>
/// For enum types a new type usage based on the underlying type will be created. For primitive types
/// the value passed to the function will be returned.
/// </remarks>
internal static TypeUsage GetPrimitiveTypeUsageForScalar(TypeUsage scalarType)
{
DebugCheck.NotNull(scalarType);
Debug.Assert(TypeSemantics.IsScalarType(scalarType), "Primitive or enum type expected.");
return(TypeSemantics.IsEnumerationType(scalarType)
? CreateEnumUnderlyingTypeUsage(scalarType)
: scalarType);
}
private static string GetTypeUsageToken(TypeUsage type)
{
string result = null;
// Dev10#537010: EntityCommand false positive cache hits caused by insufficient parameter type information in cache key
// Ensure String types are correctly differentiated.
if (ReferenceEquals(type, DbTypeMap.AnsiString))
{
result = "AnsiString";
}
else if (ReferenceEquals(type, DbTypeMap.AnsiStringFixedLength))
{
result = "AnsiStringFixedLength";
}
else if (ReferenceEquals(type, DbTypeMap.String))
{
result = "String";
}
else if (ReferenceEquals(type, DbTypeMap.StringFixedLength))
{
result = "StringFixedLength";
}
else if (ReferenceEquals(type, DbTypeMap.Xml))
{
// Xml is currently mapped to (unicode, variable-length) string, so the TypeUsage
// given to the provider is actually a String TypeUsage.
Debug.Assert(
TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.String),
"Update GetTypeUsageToken to return 'Xml' for Xml parameters");
result = "String";
}
else if (TypeSemantics.IsEnumerationType(type))
{
result = type.EdmType.FullName;
}
else
{
// String/Xml TypeUsages are the only DbType-derived TypeUsages that carry meaningful facets.
// Otherwise, the primitive type name is a sufficient token (note that full name is not required
// since model types always have the 'Edm' namespace).
Debug.Assert(TypeSemantics.IsPrimitiveType(type), "EntityParameter TypeUsage not a primitive type?");
Debug.Assert(
!TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.String),
"String TypeUsage not derived from DbType.AnsiString, AnsiString, String, StringFixedLength or Xml?");
result = type.EdmType.Name;
}
return(result);
}
internal System.Data.Entity.Core.Query.InternalTrees.Node GetInternalTree(
Command targetIqtCommand,
IList <System.Data.Entity.Core.Query.InternalTrees.Node> targetIqtArguments)
{
if (this.m_internalTreeNode == null)
{
DiscriminatorMap discriminatorMap;
Command command = ITreeGenerator.Generate(this.GenerateFunctionView(out discriminatorMap), discriminatorMap);
System.Data.Entity.Core.Query.InternalTrees.Node root = command.Root;
System.Data.Entity.Core.Query.PlanCompiler.PlanCompiler.Assert(root.Op.OpType == OpType.PhysicalProject, "Expected a physical projectOp at the root of the tree - found " + (object)root.Op.OpType);
PhysicalProjectOp op = (PhysicalProjectOp)root.Op;
System.Data.Entity.Core.Query.InternalTrees.Node child0 = root.Child0;
command.DisableVarVecEnumCaching();
System.Data.Entity.Core.Query.InternalTrees.Node relOpNode = child0;
Var computedVar = op.Outputs[0];
if (!Command.EqualTypes(op.ColumnMap.Type, this.FunctionImport.ReturnParameter.TypeUsage))
{
TypeUsage typeUsage = ((CollectionType)this.FunctionImport.ReturnParameter.TypeUsage.EdmType).TypeUsage;
System.Data.Entity.Core.Query.InternalTrees.Node node1 = command.CreateNode((Op)command.CreateVarRefOp(computedVar));
System.Data.Entity.Core.Query.InternalTrees.Node node2 = command.CreateNode((Op)command.CreateSoftCastOp(typeUsage), node1);
System.Data.Entity.Core.Query.InternalTrees.Node varDefListNode = command.CreateVarDefListNode(node2, out computedVar);
ProjectOp projectOp = command.CreateProjectOp(computedVar);
relOpNode = command.CreateNode((Op)projectOp, relOpNode, varDefListNode);
}
this.m_internalTreeNode = command.BuildCollect(relOpNode, computedVar);
}
Dictionary <string, System.Data.Entity.Core.Query.InternalTrees.Node> viewArguments = new Dictionary <string, System.Data.Entity.Core.Query.InternalTrees.Node>(this.m_commandParameters.Length);
for (int index = 0; index < this.m_commandParameters.Length; ++index)
{
DbParameterReferenceExpression commandParameter = this.m_commandParameters[index];
System.Data.Entity.Core.Query.InternalTrees.Node node = targetIqtArguments[index];
if (TypeSemantics.IsEnumerationType(node.Op.Type))
{
node = targetIqtCommand.CreateNode((Op)targetIqtCommand.CreateSoftCastOp(TypeHelpers.CreateEnumUnderlyingTypeUsage(node.Op.Type)), node);
}
viewArguments.Add(commandParameter.ParameterName, node);
}
return(FunctionImportMappingComposable.FunctionViewOpCopier.Copy(targetIqtCommand, this.m_internalTreeNode, viewArguments));
}
internal MetadataMember ResolveMetadataMemberAccess(
MetadataMember qualifier,
string name,
ErrorContext errCtx)
{
string fullName = TypeResolver.GetFullName(qualifier.Name, name);
if (qualifier.MetadataMemberClass == MetadataMemberClass.Namespace)
{
MetadataType type;
if (this.TryGetTypeFromMetadata(fullName, out type))
{
return((MetadataMember)type);
}
MetadataFunctionGroup functionGroup;
if (this.TryGetFunctionFromMetadata(qualifier.Name, name, out functionGroup))
{
return((MetadataMember)functionGroup);
}
return((MetadataMember) new MetadataNamespace(fullName));
}
if (qualifier.MetadataMemberClass == MetadataMemberClass.Type)
{
MetadataType metadataType = (MetadataType)qualifier;
if (TypeSemantics.IsEnumerationType(metadataType.TypeUsage))
{
EnumMember outMember;
if (this._perspective.TryGetEnumMember((EnumType)metadataType.TypeUsage.EdmType, name, this._parserOptions.NameComparisonCaseInsensitive, out outMember))
{
return((MetadataMember) new MetadataEnumMember(fullName, metadataType.TypeUsage, outMember));
}
string errorMessage = Strings.NotAMemberOfType((object)name, (object)qualifier.Name);
throw EntitySqlException.Create(errCtx, errorMessage, (Exception)null);
}
}
string errorMessage1 = Strings.InvalidMetadataMemberClassResolution((object)qualifier.Name, (object)qualifier.MetadataMemberClassName, (object)MetadataNamespace.NamespaceClassName);
throw EntitySqlException.Create(errCtx, errorMessage1, (Exception)null);
}
internal Node GetInternalTree(Command targetIqtCommand, IList <Node> targetIqtArguments)
{
if (m_internalTreeNode == null)
{
DiscriminatorMap discriminatorMap;
var tree = GenerateFunctionView(out discriminatorMap);
Debug.Assert(tree != null, "tree != null");
// Convert this into an ITree first
var itree = ITreeGenerator.Generate(tree, discriminatorMap);
var rootProject = itree.Root; // PhysicalProject(RelInput)
PlanCompiler.Assert(
rootProject.Op.OpType == OpType.PhysicalProject,
"Expected a physical projectOp at the root of the tree - found " + rootProject.Op.OpType);
var rootProjectOp = (PhysicalProjectOp)rootProject.Op;
Debug.Assert(rootProjectOp.Outputs.Count == 1, "rootProjectOp.Outputs.Count == 1");
var rootInput = rootProject.Child0; // the RelInput in PhysicalProject(RelInput)
// #554756: VarVec enumerators are not cached on the shared Command instance.
itree.DisableVarVecEnumCaching();
// Function import returns a collection, so convert it to a scalar by wrapping into CollectOp.
var relNode = rootInput;
var relVar = rootProjectOp.Outputs[0];
// ProjectOp does not implement Type property, so get the type from the column map.
var functionViewType = rootProjectOp.ColumnMap.Type;
if (!Command.EqualTypes(functionViewType, FunctionImport.ReturnParameter.TypeUsage))
{
Debug.Assert(
TypeSemantics.IsPromotableTo(functionViewType, FunctionImport.ReturnParameter.TypeUsage),
"Mapping expression result type must be promotable to the c-space function return type.");
// Build "relNode = Project(relNode, SoftCast(relVar))"
var expectedCollectionType = (CollectionType)FunctionImport.ReturnParameter.TypeUsage.EdmType;
var expectedElementType = expectedCollectionType.TypeUsage;
var varRefNode = itree.CreateNode(itree.CreateVarRefOp(relVar));
var castNode = itree.CreateNode(itree.CreateSoftCastOp(expectedElementType), varRefNode);
var varDefListNode = itree.CreateVarDefListNode(castNode, out relVar);
var projectOp = itree.CreateProjectOp(relVar);
relNode = itree.CreateNode(projectOp, relNode, varDefListNode);
}
// Build "Collect(PhysicalProject(relNode))
m_internalTreeNode = itree.BuildCollect(relNode, relVar);
}
Debug.Assert(m_internalTreeNode != null, "m_internalTreeNode != null");
// Prepare argument replacement dictionary
Debug.Assert(m_commandParameters.Length == targetIqtArguments.Count, "m_commandParameters.Length == targetIqtArguments.Count");
var viewArguments = new Dictionary <string, Node>(m_commandParameters.Length);
for (var i = 0; i < m_commandParameters.Length; ++i)
{
var commandParam = m_commandParameters[i];
var argumentNode = targetIqtArguments[i];
// If function import parameter is of enum type, the argument value for it will be of enum type. We however have
// converted enum types to underlying types for m_commandParameters. So we now need to softcast the argument
// expression to the underlying type as well.
if (TypeSemantics.IsEnumerationType(argumentNode.Op.Type))
{
argumentNode = targetIqtCommand.CreateNode(
targetIqtCommand.CreateSoftCastOp(TypeHelpers.CreateEnumUnderlyingTypeUsage(argumentNode.Op.Type)),
argumentNode);
}
Debug.Assert(
TypeSemantics.IsPromotableTo(argumentNode.Op.Type, commandParam.ResultType),
"Argument type must be promotable to parameter type.");
viewArguments.Add(commandParam.ParameterName, argumentNode);
}
return(FunctionViewOpCopier.Copy(targetIqtCommand, m_internalTreeNode, viewArguments));
}
internal static bool IsEnumerationType(TypeUsage type)
{
return(TypeSemantics.IsEnumerationType(type));
}
private static string GetTypeUsageToken(TypeUsage type)
{
return(!object.ReferenceEquals((object)type, (object)DbTypeMap.AnsiString) ? (!object.ReferenceEquals((object)type, (object)DbTypeMap.AnsiStringFixedLength) ? (!object.ReferenceEquals((object)type, (object)DbTypeMap.String) ? (!object.ReferenceEquals((object)type, (object)DbTypeMap.StringFixedLength) ? (!object.ReferenceEquals((object)type, (object)DbTypeMap.Xml) ? (!TypeSemantics.IsEnumerationType(type) ? type.EdmType.Name : type.EdmType.FullName) : "String") : "StringFixedLength") : "String") : "AnsiStringFixedLength") : "AnsiString");
}
