Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Metadata / EdmItemCollection.cs / 1305376 / EdmItemCollection.cs
//----------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//
// @owner [....]
// @backupOwner [....]
//---------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Data.Common.Utils;
using System.Data.EntityModel;
using System.Data.EntityModel.SchemaObjectModel;
using System.Data.Metadata.Edm;
using System.Diagnostics;
using System.Text;
using System.Xml.Serialization;
using System.Xml;
using System.Xml.Schema;
using System.IO;
using System.Data.Common;
using System.Data.Common.CommandTrees;
using System.Data.Common.QueryCache;
using System.Data.Objects.ELinq;
using System.Data.Entity;
using System.Threading;
using System.Runtime.Versioning;
using System.Reflection;
namespace System.Data.Metadata.Edm
{
///
/// Class for representing a collection of items in Edm space.
///
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Edm")]
[CLSCompliant(false)]
public sealed class EdmItemCollection : ItemCollection
{
#region Constructors
///
/// constructor that loads the metadata files from the specified xmlReaders, and returns the list of errors
/// encountered during load as the out parameter errors.
///
/// xmlReaders where the CDM schemas are loaded
/// Paths (URIs)to the CSDL files or resources
/// An out parameter to return the collection of errors encountered while loading
// referenced by System.Data.Entity.Design.dll
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
internal EdmItemCollection(IEnumerable xmlReaders,
System.Collections.ObjectModel.ReadOnlyCollection filePaths,
out IList errors)
: base(DataSpace.CSpace)
{
// we will check the parameters for this internal ctor becuase
// it is pretty much publicly exposed through the MetadataItemCollectionFactory
// in System.Data.Entity.Design
//
// we are intentionally not checking for an empty enumerable
EntityUtil.CheckArgumentNull(xmlReaders, "xmlReaders");
EntityUtil.CheckArgumentContainsNull(ref xmlReaders, "xmlReaders");
// filePaths is allowed to be null
errors = this.Init(xmlReaders, filePaths, false /*throwOnErrors*/);
}
///
/// constructor that loads the metadata files from the specified schemas
///
/// list of schemas to be loaded into the ItemCollection
// referenced by System.Data.Entity.Design.dll
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
internal EdmItemCollection(IList schemas)
: base(DataSpace.CSpace)
{
this.Init();
LoadItems(MetadataItem.EdmProviderManifest, schemas, this);
}
///
/// constructor that loads the metadata files from the specified xmlReaders
///
/// xmlReaders where the CDM schemas are loaded
/// Paths (URIs)to the CSDL files or resources
internal EdmItemCollection(IEnumerable xmlReaders,
IEnumerable filePaths)
: base(DataSpace.CSpace)
{
this.Init(xmlReaders, filePaths, true /*throwOnErrors*/);
}
///
/// Public constructor that loads the metadata files from the specified XmlReaders
///
/// XmlReader objects where the EDM schemas are loaded
public EdmItemCollection(IEnumerable xmlReaders)
: base(DataSpace.CSpace)
{
EntityUtil.CheckArgumentNull(xmlReaders, "xmlReaders");
EntityUtil.CheckArgumentContainsNull(ref xmlReaders, "xmlReaders");
MetadataArtifactLoader composite = MetadataArtifactLoader.CreateCompositeFromXmlReaders(xmlReaders);
this.Init(composite.GetReaders(),
composite.GetPaths(),
true /*throwOnError*/);
}
///
/// Constructs the new instance of EdmItemCollection
/// with the list of CDM files provided.
///
/// paths where the CDM schemas are loaded
/// Thrown if path name is not valid
/// thrown if paths argument is null
/// For errors related to invalid schemas.
[ResourceExposure(ResourceScope.Machine)] //Exposes the file path names which are a Machine resource
[ResourceConsumption(ResourceScope.Machine)] //For MetadataArtifactLoader.CreateCompositeFromFilePaths method call but we do not create the file paths in this method
public EdmItemCollection(params string[] filePaths)
: base(DataSpace.CSpace)
{
EntityUtil.CheckArgumentNull(filePaths, "filePaths");
// Wrap the file paths in instances of the MetadataArtifactLoader class, which provides
// an abstraction and a uniform interface over a diverse set of metadata artifacts.
//
MetadataArtifactLoader composite = null;
List readers = null;
try
{
composite = MetadataArtifactLoader.CreateCompositeFromFilePaths(filePaths, XmlConstants.CSpaceSchemaExtension);
readers = composite.CreateReaders(DataSpace.CSpace);
this.Init(readers,
composite.GetPaths(DataSpace.CSpace),
true /*throwOnError*/);
}
finally
{
if (readers != null)
{
Helper.DisposeXmlReaders(readers);
}
}
}
// the most basic initialization
private void Init()
{
// Load the EDM primitive types
LoadEdmPrimitiveTypesAndFunctions();
}
///
/// Public constructor that loads the metadata files from the specified XmlReaders, and
/// returns the list of errors encountered during load as the out parameter 'errors'.
///
/// XmlReader objects where the EDM schemas are loaded
/// Paths (URIs) to the CSDL files or resources
/// A flag to indicate whether to throw if LoadItems returns errors
private IList Init(IEnumerable xmlReaders,
IEnumerable filePaths,
bool throwOnError)
{
EntityUtil.CheckArgumentNull(xmlReaders, "xmlReaders");
// do the basic initialization
Init();
IList errors = LoadItems(xmlReaders, filePaths, SchemaDataModelOption.EntityDataModel,
MetadataItem.EdmProviderManifest, this, throwOnError);
return errors;
}
#endregion
#region Fields
// Cache for primitive type maps for Edm to provider
private CacheForPrimitiveTypes _primitiveTypeMaps = new CacheForPrimitiveTypes();
private Double _edmVersion = XmlConstants.UndefinedVersion;
///
/// Gets canonical versions of InitializerMetadata instances. This avoids repeatedly
/// compiling delegates for materialization.
///
private Memoizer _getCanonicalInitializerMetadataMemoizer;
///
/// Manages user defined function definitions.
///
private Memoizer _getGeneratedFunctionDefinitionsMemoizer;
private OcAssemblyCache _conventionalOcCache = new OcAssemblyCache();
#endregion
#region Properties
///
/// Version of the EDM that this ItemCollection represents.
/// The Edm Version of the ItemCollection will be the max version
/// of the schemas that the item collection is constructed of.
///
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Edm")]
public Double EdmVersion
{
get { return _edmVersion; }
internal set { _edmVersion = value; }
}
///
/// conventional oc mapping cache, the locking mechanism is provided by ----semblyCache
///
internal OcAssemblyCache ConventionalOcCache
{
get { return _conventionalOcCache; }
}
#endregion
#region Methods
///
/// Given an InitializerMetadata instance, returns the canonical version of that instance.
/// This allows us to avoid compiling materialization delegates repeatedly for the same
/// pattern.
///
internal InitializerMetadata GetCanonicalInitializerMetadata(InitializerMetadata metadata)
{
if (null == _getCanonicalInitializerMetadataMemoizer)
{
// We memoize the identity function because the first evaluation of the function establishes
// the canonical 'reference' for the initializer metadata with a particular 'value'.
Interlocked.CompareExchange(ref _getCanonicalInitializerMetadataMemoizer, new Memoizer(
m => m, EqualityComparer.Default), null);
}
// check if an equivalent has already been registered
InitializerMetadata canonical = _getCanonicalInitializerMetadataMemoizer.Evaluate(metadata);
return canonical;
}
internal static bool IsSystemNamespace(DbProviderManifest manifest, string namespaceName)
{
if (manifest == MetadataItem.EdmProviderManifest)
{
return (namespaceName == EdmConstants.TransientNamespace ||
namespaceName == EdmConstants.EdmNamespace ||
namespaceName == EdmConstants.ClrPrimitiveTypeNamespace);
}
else
{
return (namespaceName == EdmConstants.TransientNamespace ||
namespaceName == EdmConstants.EdmNamespace ||
namespaceName == EdmConstants.ClrPrimitiveTypeNamespace ||
(manifest != null && namespaceName == manifest.NamespaceName));
}
}
///
/// Load stuff from xml readers - this now includes XmlReader instances created over embedded
/// resources. See the remarks section below for some useful information.
///
/// A list of XmlReader instances
/// whether this is a entity data model or provider data model
/// provider manifest from which the primitive type definition comes from
/// item collection to add the item after loading
/// Indicates whether the method should bother with the file paths; see remarks below
///
/// In order to accommodate XmlReaders over artifacts embedded as resources in assemblies, the
/// notion of a filepath had to be abstracted into a URI. In reality, however, a res:// URI that
/// points to an embedded resource does not constitute a valid URI (i.e., one that can be parsed
/// by the System.Uri class in the .NET framework). In such cases, we need to supply a list of
/// "filepaths" (which includes res:// URIs), instead of having this method create the collection.
/// This distinction is made by setting the 'computeFilePaths' flags appropriately.
///
internal static IList LoadItems(IEnumerable xmlReaders,
IEnumerable sourceFilePaths,
SchemaDataModelOption dataModelOption,
DbProviderManifest providerManifest,
ItemCollection itemCollection,
bool throwOnError)
{
IList schemaCollection = null;
// Parse and validate all the schemas - since we support using now,
// we need to parse them as a group
var errorCollection = SchemaManager.ParseAndValidate(xmlReaders, sourceFilePaths,
dataModelOption, providerManifest, out schemaCollection);
// Try to initialize the metadata if there are no errors
if (MetadataHelper.CheckIfAllErrorsAreWarnings(errorCollection))
{
List errors = LoadItems(providerManifest, schemaCollection, itemCollection);
foreach (var error in errors)
{
errorCollection.Add(error);
}
}
if (!MetadataHelper.CheckIfAllErrorsAreWarnings(errorCollection) && throwOnError)
{
//Future Enhancement: if there is an error, we throw exception with error and warnings.
//Otherwise the user has no clue to know about warnings.
throw EntityUtil.InvalidSchemaEncountered(Helper.CombineErrorMessage(errorCollection));
}
return errorCollection;
}
internal static List LoadItems(DbProviderManifest manifest, IList somSchemas,
ItemCollection itemCollection)
{
List errors = new List();
// Convert the schema, if model schema, then we use the EDM provider manifest, otherwise use the
// store provider manifest
IEnumerable newGlobalItems = LoadSomSchema(somSchemas, manifest, itemCollection);
List tempCTypeFunctionIdentity = new List();
// No errors, so go ahead and add the types and make them readonly
foreach (GlobalItem globalItem in newGlobalItems)
{
// If multiple function parameter and return types expressed in SSpace map to the same
// CSpace type (e.g., SqlServer.decimal and SqlServer.numeric both map to Edm.Decimal),
// we need to guard against attempts to insert duplicate functions into the collection.
//
if (globalItem.BuiltInTypeKind == BuiltInTypeKind.EdmFunction && globalItem.DataSpace == DataSpace.SSpace)
{
EdmFunction function = (EdmFunction)globalItem;
StringBuilder sb = new StringBuilder();
EdmFunction.BuildIdentity(
sb,
function.FullName,
function.Parameters,
// convert function parameters to C-side types
(param) => MetadataHelper.ConvertStoreTypeUsageToEdmTypeUsage(param.TypeUsage),
(param) => param.Mode);
string cTypeFunctionIdentity = sb.ToString();
// Validate identity
if (tempCTypeFunctionIdentity.Contains(cTypeFunctionIdentity))
{
errors.Add(
new EdmSchemaError(
Strings.DuplicatedFunctionoverloads(function.FullName, cTypeFunctionIdentity.Substring(function.FullName.Length)).Trim()/*parameters*/,
(int)ErrorCode.DuplicatedFunctionoverloads,
EdmSchemaErrorSeverity.Error));
continue;
}
tempCTypeFunctionIdentity.Add(cTypeFunctionIdentity);
}
globalItem.SetReadOnly();
itemCollection.AddInternal(globalItem);
}
return errors;
}
///
/// Load metadata from a SOM schema directly
///
/// The SOM schema to load from
/// The provider manifest used for loading the type
/// item collection in which primitive types are present
/// The newly created items
internal static IEnumerable LoadSomSchema(IList somSchemas,
DbProviderManifest providerManifest,
ItemCollection itemCollection)
{
IEnumerable newGlobalItems = Converter.ConvertSchema(somSchemas,
providerManifest, itemCollection);
return newGlobalItems;
}
///
/// Get the list of primitive types for the given space
///
/// GetPrimitiveTypes()
{
return _primitiveTypeMaps.GetTypes();
}
///
/// Given the canonical primitive type, get the mapping primitive type in the given dataspace
///
/// canonical primitive type
/// The mapped scalar type
internal override PrimitiveType GetMappedPrimitiveType(PrimitiveTypeKind primitiveTypeKind)
{
PrimitiveType type = null;
_primitiveTypeMaps.TryGetType(primitiveTypeKind, null, out type);
return type;
}
private void LoadEdmPrimitiveTypesAndFunctions()
{
EdmProviderManifest providerManifest = EdmProviderManifest.Instance;
System.Collections.ObjectModel.ReadOnlyCollection primitiveTypes = providerManifest.GetStoreTypes();
for (int i = 0; i < primitiveTypes.Count; i++)
{
this.AddInternal(primitiveTypes[i]);
_primitiveTypeMaps.Add(primitiveTypes[i]);
}
System.Collections.ObjectModel.ReadOnlyCollection functions = providerManifest.GetStoreFunctions();
for (int i = 0; i < functions.Count; i++)
{
this.AddInternal(functions[i]);
}
}
///
/// Generates function definition or returns a cached one.
/// Guarantees type match of declaration and generated parameters.
/// Guarantees return type match.
/// Throws internal error for functions without definition.
/// Passes thru exceptions occured during definition generation.
///
internal DbLambda GetGeneratedFunctionDefinition(EdmFunction function)
{
if (null == _getGeneratedFunctionDefinitionsMemoizer)
{
Interlocked.CompareExchange(
ref _getGeneratedFunctionDefinitionsMemoizer,
new Memoizer(GenerateFunctionDefinition, null),
null);
}
return _getGeneratedFunctionDefinitionsMemoizer.Evaluate(function);
}
///
/// Generates function definition or returns a cached one.
/// Guarantees type match of declaration and generated parameters.
/// Guarantees return type match.
/// Throws internal error for functions without definition.
/// Passes thru exceptions occured during definition generation.
///
internal DbLambda GenerateFunctionDefinition(EdmFunction function)
{
if (!function.HasUserDefinedBody)
{
throw EntityUtil.InternalError(EntityUtil.InternalErrorCode.AttemptToGenerateDefinitionForFunctionWithoutDef, 0, function.FullName);
}
DbLambda generatedDefinition;
// Generate the body
generatedDefinition = Mapping.ViewGeneration.Utils.ExternalCalls.CompileFunctionDefinition(
function.FullName,
function.CommandTextAttribute,
function.Parameters,
this);
// Ensure the result type of the generated definition matches the result type of the edm function (the declaration)
if (!TypeSemantics.IsStructurallyEqual(function.ReturnParameter.TypeUsage, generatedDefinition.Body.ResultType))
{
throw EntityUtil.FunctionDefinitionResultTypeMismatch(function, generatedDefinition.Body.ResultType);
}
Debug.Assert(generatedDefinition != null, "generatedDefinition != null");
return generatedDefinition;
}
#endregion
}//---- ItemCollection
}//----
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//----------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//
// @owner [....]
// @backupOwner [....]
//---------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Data.Common.Utils;
using System.Data.EntityModel;
using System.Data.EntityModel.SchemaObjectModel;
using System.Data.Metadata.Edm;
using System.Diagnostics;
using System.Text;
using System.Xml.Serialization;
using System.Xml;
using System.Xml.Schema;
using System.IO;
using System.Data.Common;
using System.Data.Common.CommandTrees;
using System.Data.Common.QueryCache;
using System.Data.Objects.ELinq;
using System.Data.Entity;
using System.Threading;
using System.Runtime.Versioning;
using System.Reflection;
namespace System.Data.Metadata.Edm
{
///
/// Class for representing a collection of items in Edm space.
///
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Edm")]
[CLSCompliant(false)]
public sealed class EdmItemCollection : ItemCollection
{
#region Constructors
///
/// constructor that loads the metadata files from the specified xmlReaders, and returns the list of errors
/// encountered during load as the out parameter errors.
///
/// xmlReaders where the CDM schemas are loaded
/// Paths (URIs)to the CSDL files or resources
/// An out parameter to return the collection of errors encountered while loading
// referenced by System.Data.Entity.Design.dll
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
internal EdmItemCollection(IEnumerable xmlReaders,
System.Collections.ObjectModel.ReadOnlyCollection filePaths,
out IList errors)
: base(DataSpace.CSpace)
{
// we will check the parameters for this internal ctor becuase
// it is pretty much publicly exposed through the MetadataItemCollectionFactory
// in System.Data.Entity.Design
//
// we are intentionally not checking for an empty enumerable
EntityUtil.CheckArgumentNull(xmlReaders, "xmlReaders");
EntityUtil.CheckArgumentContainsNull(ref xmlReaders, "xmlReaders");
// filePaths is allowed to be null
errors = this.Init(xmlReaders, filePaths, false /*throwOnErrors*/);
}
///
/// constructor that loads the metadata files from the specified schemas
///
/// list of schemas to be loaded into the ItemCollection
// referenced by System.Data.Entity.Design.dll
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
internal EdmItemCollection(IList schemas)
: base(DataSpace.CSpace)
{
this.Init();
LoadItems(MetadataItem.EdmProviderManifest, schemas, this);
}
///
/// constructor that loads the metadata files from the specified xmlReaders
///
/// xmlReaders where the CDM schemas are loaded
/// Paths (URIs)to the CSDL files or resources
internal EdmItemCollection(IEnumerable xmlReaders,
IEnumerable filePaths)
: base(DataSpace.CSpace)
{
this.Init(xmlReaders, filePaths, true /*throwOnErrors*/);
}
///
/// Public constructor that loads the metadata files from the specified XmlReaders
///
/// XmlReader objects where the EDM schemas are loaded
public EdmItemCollection(IEnumerable xmlReaders)
: base(DataSpace.CSpace)
{
EntityUtil.CheckArgumentNull(xmlReaders, "xmlReaders");
EntityUtil.CheckArgumentContainsNull(ref xmlReaders, "xmlReaders");
MetadataArtifactLoader composite = MetadataArtifactLoader.CreateCompositeFromXmlReaders(xmlReaders);
this.Init(composite.GetReaders(),
composite.GetPaths(),
true /*throwOnError*/);
}
///
/// Constructs the new instance of EdmItemCollection
/// with the list of CDM files provided.
///
/// paths where the CDM schemas are loaded
/// Thrown if path name is not valid
/// thrown if paths argument is null
/// For errors related to invalid schemas.
[ResourceExposure(ResourceScope.Machine)] //Exposes the file path names which are a Machine resource
[ResourceConsumption(ResourceScope.Machine)] //For MetadataArtifactLoader.CreateCompositeFromFilePaths method call but we do not create the file paths in this method
public EdmItemCollection(params string[] filePaths)
: base(DataSpace.CSpace)
{
EntityUtil.CheckArgumentNull(filePaths, "filePaths");
// Wrap the file paths in instances of the MetadataArtifactLoader class, which provides
// an abstraction and a uniform interface over a diverse set of metadata artifacts.
//
MetadataArtifactLoader composite = null;
List readers = null;
try
{
composite = MetadataArtifactLoader.CreateCompositeFromFilePaths(filePaths, XmlConstants.CSpaceSchemaExtension);
readers = composite.CreateReaders(DataSpace.CSpace);
this.Init(readers,
composite.GetPaths(DataSpace.CSpace),
true /*throwOnError*/);
}
finally
{
if (readers != null)
{
Helper.DisposeXmlReaders(readers);
}
}
}
// the most basic initialization
private void Init()
{
// Load the EDM primitive types
LoadEdmPrimitiveTypesAndFunctions();
}
///
/// Public constructor that loads the metadata files from the specified XmlReaders, and
/// returns the list of errors encountered during load as the out parameter 'errors'.
///
/// XmlReader objects where the EDM schemas are loaded
/// Paths (URIs) to the CSDL files or resources
/// A flag to indicate whether to throw if LoadItems returns errors
private IList Init(IEnumerable xmlReaders,
IEnumerable filePaths,
bool throwOnError)
{
EntityUtil.CheckArgumentNull(xmlReaders, "xmlReaders");
// do the basic initialization
Init();
IList errors = LoadItems(xmlReaders, filePaths, SchemaDataModelOption.EntityDataModel,
MetadataItem.EdmProviderManifest, this, throwOnError);
return errors;
}
#endregion
#region Fields
// Cache for primitive type maps for Edm to provider
private CacheForPrimitiveTypes _primitiveTypeMaps = new CacheForPrimitiveTypes();
private Double _edmVersion = XmlConstants.UndefinedVersion;
///
/// Gets canonical versions of InitializerMetadata instances. This avoids repeatedly
/// compiling delegates for materialization.
///
private Memoizer _getCanonicalInitializerMetadataMemoizer;
///
/// Manages user defined function definitions.
///
private Memoizer _getGeneratedFunctionDefinitionsMemoizer;
private OcAssemblyCache _conventionalOcCache = new OcAssemblyCache();
#endregion
#region Properties
///
/// Version of the EDM that this ItemCollection represents.
/// The Edm Version of the ItemCollection will be the max version
/// of the schemas that the item collection is constructed of.
///
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Edm")]
public Double EdmVersion
{
get { return _edmVersion; }
internal set { _edmVersion = value; }
}
///
/// conventional oc mapping cache, the locking mechanism is provided by ----semblyCache
///
internal OcAssemblyCache ConventionalOcCache
{
get { return _conventionalOcCache; }
}
#endregion
#region Methods
///
/// Given an InitializerMetadata instance, returns the canonical version of that instance.
/// This allows us to avoid compiling materialization delegates repeatedly for the same
/// pattern.
///
internal InitializerMetadata GetCanonicalInitializerMetadata(InitializerMetadata metadata)
{
if (null == _getCanonicalInitializerMetadataMemoizer)
{
// We memoize the identity function because the first evaluation of the function establishes
// the canonical 'reference' for the initializer metadata with a particular 'value'.
Interlocked.CompareExchange(ref _getCanonicalInitializerMetadataMemoizer, new Memoizer(
m => m, EqualityComparer.Default), null);
}
// check if an equivalent has already been registered
InitializerMetadata canonical = _getCanonicalInitializerMetadataMemoizer.Evaluate(metadata);
return canonical;
}
internal static bool IsSystemNamespace(DbProviderManifest manifest, string namespaceName)
{
if (manifest == MetadataItem.EdmProviderManifest)
{
return (namespaceName == EdmConstants.TransientNamespace ||
namespaceName == EdmConstants.EdmNamespace ||
namespaceName == EdmConstants.ClrPrimitiveTypeNamespace);
}
else
{
return (namespaceName == EdmConstants.TransientNamespace ||
namespaceName == EdmConstants.EdmNamespace ||
namespaceName == EdmConstants.ClrPrimitiveTypeNamespace ||
(manifest != null && namespaceName == manifest.NamespaceName));
}
}
///
/// Load stuff from xml readers - this now includes XmlReader instances created over embedded
/// resources. See the remarks section below for some useful information.
///
/// A list of XmlReader instances
/// whether this is a entity data model or provider data model
/// provider manifest from which the primitive type definition comes from
/// item collection to add the item after loading
/// Indicates whether the method should bother with the file paths; see remarks below
///
/// In order to accommodate XmlReaders over artifacts embedded as resources in assemblies, the
/// notion of a filepath had to be abstracted into a URI. In reality, however, a res:// URI that
/// points to an embedded resource does not constitute a valid URI (i.e., one that can be parsed
/// by the System.Uri class in the .NET framework). In such cases, we need to supply a list of
/// "filepaths" (which includes res:// URIs), instead of having this method create the collection.
/// This distinction is made by setting the 'computeFilePaths' flags appropriately.
///
internal static IList LoadItems(IEnumerable xmlReaders,
IEnumerable sourceFilePaths,
SchemaDataModelOption dataModelOption,
DbProviderManifest providerManifest,
ItemCollection itemCollection,
bool throwOnError)
{
IList schemaCollection = null;
// Parse and validate all the schemas - since we support using now,
// we need to parse them as a group
var errorCollection = SchemaManager.ParseAndValidate(xmlReaders, sourceFilePaths,
dataModelOption, providerManifest, out schemaCollection);
// Try to initialize the metadata if there are no errors
if (MetadataHelper.CheckIfAllErrorsAreWarnings(errorCollection))
{
List errors = LoadItems(providerManifest, schemaCollection, itemCollection);
foreach (var error in errors)
{
errorCollection.Add(error);
}
}
if (!MetadataHelper.CheckIfAllErrorsAreWarnings(errorCollection) && throwOnError)
{
//Future Enhancement: if there is an error, we throw exception with error and warnings.
//Otherwise the user has no clue to know about warnings.
throw EntityUtil.InvalidSchemaEncountered(Helper.CombineErrorMessage(errorCollection));
}
return errorCollection;
}
internal static List LoadItems(DbProviderManifest manifest, IList somSchemas,
ItemCollection itemCollection)
{
List errors = new List();
// Convert the schema, if model schema, then we use the EDM provider manifest, otherwise use the
// store provider manifest
IEnumerable newGlobalItems = LoadSomSchema(somSchemas, manifest, itemCollection);
List tempCTypeFunctionIdentity = new List();
// No errors, so go ahead and add the types and make them readonly
foreach (GlobalItem globalItem in newGlobalItems)
{
// If multiple function parameter and return types expressed in SSpace map to the same
// CSpace type (e.g., SqlServer.decimal and SqlServer.numeric both map to Edm.Decimal),
// we need to guard against attempts to insert duplicate functions into the collection.
//
if (globalItem.BuiltInTypeKind == BuiltInTypeKind.EdmFunction && globalItem.DataSpace == DataSpace.SSpace)
{
EdmFunction function = (EdmFunction)globalItem;
StringBuilder sb = new StringBuilder();
EdmFunction.BuildIdentity(
sb,
function.FullName,
function.Parameters,
// convert function parameters to C-side types
(param) => MetadataHelper.ConvertStoreTypeUsageToEdmTypeUsage(param.TypeUsage),
(param) => param.Mode);
string cTypeFunctionIdentity = sb.ToString();
// Validate identity
if (tempCTypeFunctionIdentity.Contains(cTypeFunctionIdentity))
{
errors.Add(
new EdmSchemaError(
Strings.DuplicatedFunctionoverloads(function.FullName, cTypeFunctionIdentity.Substring(function.FullName.Length)).Trim()/*parameters*/,
(int)ErrorCode.DuplicatedFunctionoverloads,
EdmSchemaErrorSeverity.Error));
continue;
}
tempCTypeFunctionIdentity.Add(cTypeFunctionIdentity);
}
globalItem.SetReadOnly();
itemCollection.AddInternal(globalItem);
}
return errors;
}
///
/// Load metadata from a SOM schema directly
///
/// The SOM schema to load from
/// The provider manifest used for loading the type
/// item collection in which primitive types are present
/// The newly created items
internal static IEnumerable LoadSomSchema(IList somSchemas,
DbProviderManifest providerManifest,
ItemCollection itemCollection)
{
IEnumerable newGlobalItems = Converter.ConvertSchema(somSchemas,
providerManifest, itemCollection);
return newGlobalItems;
}
///
/// Get the list of primitive types for the given space
///
/// GetPrimitiveTypes()
{
return _primitiveTypeMaps.GetTypes();
}
///
/// Given the canonical primitive type, get the mapping primitive type in the given dataspace
///
/// canonical primitive type
/// The mapped scalar type
internal override PrimitiveType GetMappedPrimitiveType(PrimitiveTypeKind primitiveTypeKind)
{
PrimitiveType type = null;
_primitiveTypeMaps.TryGetType(primitiveTypeKind, null, out type);
return type;
}
private void LoadEdmPrimitiveTypesAndFunctions()
{
EdmProviderManifest providerManifest = EdmProviderManifest.Instance;
System.Collections.ObjectModel.ReadOnlyCollection primitiveTypes = providerManifest.GetStoreTypes();
for (int i = 0; i < primitiveTypes.Count; i++)
{
this.AddInternal(primitiveTypes[i]);
_primitiveTypeMaps.Add(primitiveTypes[i]);
}
System.Collections.ObjectModel.ReadOnlyCollection functions = providerManifest.GetStoreFunctions();
for (int i = 0; i < functions.Count; i++)
{
this.AddInternal(functions[i]);
}
}
///
/// Generates function definition or returns a cached one.
/// Guarantees type match of declaration and generated parameters.
/// Guarantees return type match.
/// Throws internal error for functions without definition.
/// Passes thru exceptions occured during definition generation.
///
internal DbLambda GetGeneratedFunctionDefinition(EdmFunction function)
{
if (null == _getGeneratedFunctionDefinitionsMemoizer)
{
Interlocked.CompareExchange(
ref _getGeneratedFunctionDefinitionsMemoizer,
new Memoizer(GenerateFunctionDefinition, null),
null);
}
return _getGeneratedFunctionDefinitionsMemoizer.Evaluate(function);
}
///
/// Generates function definition or returns a cached one.
/// Guarantees type match of declaration and generated parameters.
/// Guarantees return type match.
/// Throws internal error for functions without definition.
/// Passes thru exceptions occured during definition generation.
///
internal DbLambda GenerateFunctionDefinition(EdmFunction function)
{
if (!function.HasUserDefinedBody)
{
throw EntityUtil.InternalError(EntityUtil.InternalErrorCode.AttemptToGenerateDefinitionForFunctionWithoutDef, 0, function.FullName);
}
DbLambda generatedDefinition;
// Generate the body
generatedDefinition = Mapping.ViewGeneration.Utils.ExternalCalls.CompileFunctionDefinition(
function.FullName,
function.CommandTextAttribute,
function.Parameters,
this);
// Ensure the result type of the generated definition matches the result type of the edm function (the declaration)
if (!TypeSemantics.IsStructurallyEqual(function.ReturnParameter.TypeUsage, generatedDefinition.Body.ResultType))
{
throw EntityUtil.FunctionDefinitionResultTypeMismatch(function, generatedDefinition.Body.ResultType);
}
Debug.Assert(generatedDefinition != null, "generatedDefinition != null");
return generatedDefinition;
}
#endregion
}//---- ItemCollection
}//----
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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