Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataEntity / System / Data / Metadata / MetadataArtifactLoaderCompositeResource.cs / 4 / MetadataArtifactLoaderCompositeResource.cs
//----------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//
// @owner [....]
//---------------------------------------------------------------------
using System.Collections.Generic;
using System.Collections;
using System.Diagnostics;
using System.Globalization;
using System.Reflection;
using System.Text;
using System.Xml;
using System.Data.Mapping;
using System.IO;
using System.Data.Entity;
using System.Security;
using System.Security.Permissions;
using System.Collections.ObjectModel;
namespace System.Data.Metadata.Edm
{
///
/// This class represents a collection of resources to be loaded from one
/// or more assemblies.
///
internal class MetadataArtifactLoaderCompositeResource : MetadataArtifactLoader
{
///
/// The list of metadata artifacts encapsulated by the composite.
///
private readonly ReadOnlyCollection _children;
private readonly string _originalPath;
///
/// This constructor expects to get the paths that have potential to turn into multiple
/// artifacts like
///
/// res://*/foo.csdl -- could be multiple assemblies
/// res://MyAssembly/ -- could be multiple artifacts in the one assembly
///
///
/// The path to the (collection of) resources
/// The global registry of URIs
///
internal MetadataArtifactLoaderCompositeResource(string originalPath, string assemblyName, string resourceName, ICollection uriRegistry, MetadataArtifactAssemblyResolver resolver)
{
Debug.Assert(resolver != null);
_originalPath = originalPath;
_children = LoadResources(assemblyName, resourceName, uriRegistry, resolver).AsReadOnly();
}
public override string Path
{
get { return _originalPath; }
}
public override bool IsComposite
{
get
{
return true;
}
}
public override void CollectFilePermissionPaths(List paths, DataSpace spaceToGet)
{
foreach (var loader in _children)
{
loader.CollectFilePermissionPaths(paths, spaceToGet);
}
}
///
/// Get paths to artifacts for a specific DataSpace, in the original, unexpanded
/// form.
///
/// An assembly can embed any kind of artifact as a resource, so we simply
/// ignore the parameter and return the original assembly name in the URI.
/// The DataSpace for the artifacts of interest
/// A List of strings identifying paths to all artifacts for a specific DataSpace
public override List GetOriginalPaths(DataSpace spaceToGet)
{
return GetOriginalPaths();
}
///
/// Get paths to artifacts for a specific DataSpace.
///
/// The DataSpace for the artifacts of interest
/// A List of strings identifying paths to all artifacts for a specific DataSpace
public override List GetPaths(DataSpace spaceToGet)
{
List list = new List();
foreach (MetadataArtifactLoaderResource resource in _children)
{
list.AddRange(resource.GetPaths(spaceToGet));
}
return list;
}
///
/// Get paths to all artifacts
///
/// A List of strings identifying paths to all resources
public override List GetPaths()
{
List list = new List();
foreach (MetadataArtifactLoaderResource resource in _children)
{
list.AddRange(resource.GetPaths());
}
return list;
}
///
/// Aggregates all resource streams from the _children collection
///
/// A List of XmlReader objects; cannot be null
public override List GetReaders(Dictionary sourceDictionary)
{
List list = new List();
foreach (MetadataArtifactLoaderResource resource in _children)
{
list.AddRange(resource.GetReaders(sourceDictionary));
}
return list;
}
///
/// Get XmlReaders for a specific DataSpace.
///
/// The DataSpace corresponding to the requested artifacts
/// A List of XmlReader objects
public override List CreateReaders(DataSpace spaceToGet)
{
List list = new List();
foreach (MetadataArtifactLoaderResource resource in _children)
{
list.AddRange(resource.CreateReaders(spaceToGet));
}
return list;
}
///
/// Load all resources from the assembly/assemblies identified in the resource path.
///
/// The global registry of URIs
///
/// LoadResources(string assemblyName, string resourceName, ICollection uriRegistry, MetadataArtifactAssemblyResolver resolver)
{
Debug.Assert(resolver != null);
List loaders = new List();
Debug.Assert(!string.IsNullOrEmpty(assemblyName));
if (assemblyName == MetadataArtifactLoader.wildcard)
{
foreach (Assembly assembly in resolver.GetWildcardAssemblies())
{
if (AssemblyContainsResource(assembly, ref resourceName))
{
LoadResourcesFromAssembly(assembly, resourceName, uriRegistry, loaders, resolver);
}
}
}
else
{
Assembly assembly = ResolveAssemblyName(assemblyName, resolver);
LoadResourcesFromAssembly(assembly, resourceName, uriRegistry, loaders, resolver);
}
if (resourceName != null && loaders.Count == 0)
{
// they were asking for a specific resource name, and we didn't find it
throw EntityUtil.Metadata(System.Data.Entity.Strings.UnableToLoadResource);
}
return loaders;
}
private static bool AssemblyContainsResource(Assembly assembly, ref string resourceName)
{
if (resourceName == null)
{
return true;
}
string[] allresources = GetManifestResourceNamesForAssembly(assembly);
foreach (string current in allresources)
{
if (string.Equals(resourceName, current, StringComparison.OrdinalIgnoreCase))
{
resourceName = current;
return true;
}
}
return false;
}
private static void LoadResourcesFromAssembly(Assembly assembly, string resourceName, ICollection uriRegistry, List loaders, MetadataArtifactAssemblyResolver resolver)
{
if (resourceName == null)
{
LoadAllResourcesFromAssembly(assembly, uriRegistry, loaders, resolver);
}
else if (AssemblyContainsResource(assembly, ref resourceName))
{
CreateAndAddSingleResourceLoader(assembly, resourceName, uriRegistry, loaders);
}
else
{
throw EntityUtil.Metadata(System.Data.Entity.Strings.UnableToLoadResource);
}
}
private static void LoadAllResourcesFromAssembly(Assembly assembly, ICollection uriRegistry, List loaders, MetadataArtifactAssemblyResolver resolver)
{
Debug.Assert(assembly != null);
string[] allresources = GetManifestResourceNamesForAssembly(assembly);
foreach (string resourceName in allresources)
{
CreateAndAddSingleResourceLoader(assembly, resourceName, uriRegistry, loaders);
}
}
private static void CreateAndAddSingleResourceLoader(Assembly assembly, string resourceName, ICollection uriRegistry, List loaders)
{
Debug.Assert(resourceName != null);
Debug.Assert(assembly != null);
string resourceUri = CreateResPath(assembly, resourceName);
if (!uriRegistry.Contains(resourceUri))
{
loaders.Add(new MetadataArtifactLoaderResource(assembly, resourceName, uriRegistry));
}
}
internal static string CreateResPath(Assembly assembly, string resourceName)
{
string resourceUri = string.Format(CultureInfo.InvariantCulture,
"{0}{1}{2}{3}",
resPathPrefix,
assembly.FullName,
resPathSeparator,
resourceName);
return resourceUri;
}
internal static string[] GetManifestResourceNamesForAssembly(Assembly assembly)
{
try
{
return assembly.GetManifestResourceNames();
}
catch (NotSupportedException)
{
// A dynamic assembly (typically an instance of AssemblyBuilder) does not support
// the method GetManifestResourceNames().
//
return new string[0];
}
}
///
/// Load all resources from a specific assembly.
///
/// The full name identifying the assembly to
/// load resources from
/// The global registry of URIs
/// delegate for resolve the assembly
private static Assembly ResolveAssemblyName(string assemblyName, MetadataArtifactAssemblyResolver resolver)
{
Debug.Assert(resolver != null);
AssemblyName referenceName = new AssemblyName(assemblyName);
Assembly assembly;
if(!resolver.TryResolveAssemblyReference(referenceName, out assembly))
{
throw new FileNotFoundException(Strings.UnableToResolveAssembly(assemblyName));
}
return assembly;
}
internal static MetadataArtifactLoader CreateResourceLoader(string path, ExtensionCheck extensionCheck, string validExtension, ICollection uriRegistry, MetadataArtifactAssemblyResolver resolver)
{
Debug.Assert(path != null);
Debug.Assert(MetadataArtifactLoader.PathStartsWithResPrefix(path));
// if the supplied path ends with a separator, or contains only one
// segment (i.e., the name of an assembly, or the wildcard character),
// create a composite loader that can extract resources from one or
// more assemblies
//
bool createCompositeResLoader = false;
string assemblyName = null;
string resourceName = null;
ParseResourcePath(path, out assemblyName, out resourceName);
createCompositeResLoader = (assemblyName != null) && (resourceName == null || assemblyName.Trim() == wildcard);
ValidateExtension(extensionCheck, validExtension, resourceName);
if (createCompositeResLoader)
{
return new MetadataArtifactLoaderCompositeResource(path, assemblyName, resourceName, uriRegistry, resolver);
}
Debug.Assert(!string.IsNullOrEmpty(resourceName), "we should not get here is the resourceName is null");
Assembly assembly = ResolveAssemblyName(assemblyName, resolver);
return new MetadataArtifactLoaderResource(assembly, resourceName, uriRegistry);
}
private static void ValidateExtension(ExtensionCheck extensionCheck, string validExtension, string resourceName)
{
if (resourceName == null)
{
return;
}
// the supplied path represents a single resource
//
switch (extensionCheck)
{
case ExtensionCheck.Specific:
MetadataArtifactLoader.CheckArtifactExtension(resourceName, validExtension);
break;
case ExtensionCheck.All:
if (!MetadataArtifactLoader.IsValidArtifact(resourceName))
{
throw EntityUtil.Metadata(Strings.InvalidMetadataPath);
}
break;
}
}
///
/// Splits the supplied path into the assembly portion and the resource
/// part (if any)
///
/// The resource path to parse
/// An array of (two) strings containing the assembly name
/// and the resource name
private static void ParseResourcePath(string path, out string assemblyName, out string resourceName)
{
// Extract the components from the path
int prefixLength = MetadataArtifactLoader.resPathPrefix.Length;
string[] result = path.Substring(prefixLength).Split(
new string[] {
MetadataArtifactLoader.resPathSeparator,
MetadataArtifactLoader.altPathSeparator
},
StringSplitOptions.RemoveEmptyEntries
);
if (result.Length == 0 || result.Length > 2)
{
throw EntityUtil.Metadata(Strings.InvalidMetadataPath);
}
if (result.Length >= 1)
{
assemblyName = result[0];
}
else
{
assemblyName = null;
}
if (result.Length == 2)
{
resourceName = result[1];
}
else
{
resourceName = null;
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//----------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//
// @owner [....]
//---------------------------------------------------------------------
using System.Collections.Generic;
using System.Collections;
using System.Diagnostics;
using System.Globalization;
using System.Reflection;
using System.Text;
using System.Xml;
using System.Data.Mapping;
using System.IO;
using System.Data.Entity;
using System.Security;
using System.Security.Permissions;
using System.Collections.ObjectModel;
namespace System.Data.Metadata.Edm
{
///
/// This class represents a collection of resources to be loaded from one
/// or more assemblies.
///
internal class MetadataArtifactLoaderCompositeResource : MetadataArtifactLoader
{
///
/// The list of metadata artifacts encapsulated by the composite.
///
private readonly ReadOnlyCollection _children;
private readonly string _originalPath;
///
/// This constructor expects to get the paths that have potential to turn into multiple
/// artifacts like
///
/// res://*/foo.csdl -- could be multiple assemblies
/// res://MyAssembly/ -- could be multiple artifacts in the one assembly
///
///
/// The path to the (collection of) resources
/// The global registry of URIs
///
internal MetadataArtifactLoaderCompositeResource(string originalPath, string assemblyName, string resourceName, ICollection uriRegistry, MetadataArtifactAssemblyResolver resolver)
{
Debug.Assert(resolver != null);
_originalPath = originalPath;
_children = LoadResources(assemblyName, resourceName, uriRegistry, resolver).AsReadOnly();
}
public override string Path
{
get { return _originalPath; }
}
public override bool IsComposite
{
get
{
return true;
}
}
public override void CollectFilePermissionPaths(List paths, DataSpace spaceToGet)
{
foreach (var loader in _children)
{
loader.CollectFilePermissionPaths(paths, spaceToGet);
}
}
///
/// Get paths to artifacts for a specific DataSpace, in the original, unexpanded
/// form.
///
/// An assembly can embed any kind of artifact as a resource, so we simply
/// ignore the parameter and return the original assembly name in the URI.
/// The DataSpace for the artifacts of interest
/// A List of strings identifying paths to all artifacts for a specific DataSpace
public override List GetOriginalPaths(DataSpace spaceToGet)
{
return GetOriginalPaths();
}
///
/// Get paths to artifacts for a specific DataSpace.
///
/// The DataSpace for the artifacts of interest
/// A List of strings identifying paths to all artifacts for a specific DataSpace
public override List GetPaths(DataSpace spaceToGet)
{
List list = new List();
foreach (MetadataArtifactLoaderResource resource in _children)
{
list.AddRange(resource.GetPaths(spaceToGet));
}
return list;
}
///
/// Get paths to all artifacts
///
/// A List of strings identifying paths to all resources
public override List GetPaths()
{
List list = new List();
foreach (MetadataArtifactLoaderResource resource in _children)
{
list.AddRange(resource.GetPaths());
}
return list;
}
///
/// Aggregates all resource streams from the _children collection
///
/// A List of XmlReader objects; cannot be null
public override List GetReaders(Dictionary sourceDictionary)
{
List list = new List();
foreach (MetadataArtifactLoaderResource resource in _children)
{
list.AddRange(resource.GetReaders(sourceDictionary));
}
return list;
}
///
/// Get XmlReaders for a specific DataSpace.
///
/// The DataSpace corresponding to the requested artifacts
/// A List of XmlReader objects
public override List CreateReaders(DataSpace spaceToGet)
{
List list = new List();
foreach (MetadataArtifactLoaderResource resource in _children)
{
list.AddRange(resource.CreateReaders(spaceToGet));
}
return list;
}
///
/// Load all resources from the assembly/assemblies identified in the resource path.
///
/// The global registry of URIs
///
/// LoadResources(string assemblyName, string resourceName, ICollection uriRegistry, MetadataArtifactAssemblyResolver resolver)
{
Debug.Assert(resolver != null);
List loaders = new List();
Debug.Assert(!string.IsNullOrEmpty(assemblyName));
if (assemblyName == MetadataArtifactLoader.wildcard)
{
foreach (Assembly assembly in resolver.GetWildcardAssemblies())
{
if (AssemblyContainsResource(assembly, ref resourceName))
{
LoadResourcesFromAssembly(assembly, resourceName, uriRegistry, loaders, resolver);
}
}
}
else
{
Assembly assembly = ResolveAssemblyName(assemblyName, resolver);
LoadResourcesFromAssembly(assembly, resourceName, uriRegistry, loaders, resolver);
}
if (resourceName != null && loaders.Count == 0)
{
// they were asking for a specific resource name, and we didn't find it
throw EntityUtil.Metadata(System.Data.Entity.Strings.UnableToLoadResource);
}
return loaders;
}
private static bool AssemblyContainsResource(Assembly assembly, ref string resourceName)
{
if (resourceName == null)
{
return true;
}
string[] allresources = GetManifestResourceNamesForAssembly(assembly);
foreach (string current in allresources)
{
if (string.Equals(resourceName, current, StringComparison.OrdinalIgnoreCase))
{
resourceName = current;
return true;
}
}
return false;
}
private static void LoadResourcesFromAssembly(Assembly assembly, string resourceName, ICollection uriRegistry, List loaders, MetadataArtifactAssemblyResolver resolver)
{
if (resourceName == null)
{
LoadAllResourcesFromAssembly(assembly, uriRegistry, loaders, resolver);
}
else if (AssemblyContainsResource(assembly, ref resourceName))
{
CreateAndAddSingleResourceLoader(assembly, resourceName, uriRegistry, loaders);
}
else
{
throw EntityUtil.Metadata(System.Data.Entity.Strings.UnableToLoadResource);
}
}
private static void LoadAllResourcesFromAssembly(Assembly assembly, ICollection uriRegistry, List loaders, MetadataArtifactAssemblyResolver resolver)
{
Debug.Assert(assembly != null);
string[] allresources = GetManifestResourceNamesForAssembly(assembly);
foreach (string resourceName in allresources)
{
CreateAndAddSingleResourceLoader(assembly, resourceName, uriRegistry, loaders);
}
}
private static void CreateAndAddSingleResourceLoader(Assembly assembly, string resourceName, ICollection uriRegistry, List loaders)
{
Debug.Assert(resourceName != null);
Debug.Assert(assembly != null);
string resourceUri = CreateResPath(assembly, resourceName);
if (!uriRegistry.Contains(resourceUri))
{
loaders.Add(new MetadataArtifactLoaderResource(assembly, resourceName, uriRegistry));
}
}
internal static string CreateResPath(Assembly assembly, string resourceName)
{
string resourceUri = string.Format(CultureInfo.InvariantCulture,
"{0}{1}{2}{3}",
resPathPrefix,
assembly.FullName,
resPathSeparator,
resourceName);
return resourceUri;
}
internal static string[] GetManifestResourceNamesForAssembly(Assembly assembly)
{
try
{
return assembly.GetManifestResourceNames();
}
catch (NotSupportedException)
{
// A dynamic assembly (typically an instance of AssemblyBuilder) does not support
// the method GetManifestResourceNames().
//
return new string[0];
}
}
///
/// Load all resources from a specific assembly.
///
/// The full name identifying the assembly to
/// load resources from
/// The global registry of URIs
/// delegate for resolve the assembly
private static Assembly ResolveAssemblyName(string assemblyName, MetadataArtifactAssemblyResolver resolver)
{
Debug.Assert(resolver != null);
AssemblyName referenceName = new AssemblyName(assemblyName);
Assembly assembly;
if(!resolver.TryResolveAssemblyReference(referenceName, out assembly))
{
throw new FileNotFoundException(Strings.UnableToResolveAssembly(assemblyName));
}
return assembly;
}
internal static MetadataArtifactLoader CreateResourceLoader(string path, ExtensionCheck extensionCheck, string validExtension, ICollection uriRegistry, MetadataArtifactAssemblyResolver resolver)
{
Debug.Assert(path != null);
Debug.Assert(MetadataArtifactLoader.PathStartsWithResPrefix(path));
// if the supplied path ends with a separator, or contains only one
// segment (i.e., the name of an assembly, or the wildcard character),
// create a composite loader that can extract resources from one or
// more assemblies
//
bool createCompositeResLoader = false;
string assemblyName = null;
string resourceName = null;
ParseResourcePath(path, out assemblyName, out resourceName);
createCompositeResLoader = (assemblyName != null) && (resourceName == null || assemblyName.Trim() == wildcard);
ValidateExtension(extensionCheck, validExtension, resourceName);
if (createCompositeResLoader)
{
return new MetadataArtifactLoaderCompositeResource(path, assemblyName, resourceName, uriRegistry, resolver);
}
Debug.Assert(!string.IsNullOrEmpty(resourceName), "we should not get here is the resourceName is null");
Assembly assembly = ResolveAssemblyName(assemblyName, resolver);
return new MetadataArtifactLoaderResource(assembly, resourceName, uriRegistry);
}
private static void ValidateExtension(ExtensionCheck extensionCheck, string validExtension, string resourceName)
{
if (resourceName == null)
{
return;
}
// the supplied path represents a single resource
//
switch (extensionCheck)
{
case ExtensionCheck.Specific:
MetadataArtifactLoader.CheckArtifactExtension(resourceName, validExtension);
break;
case ExtensionCheck.All:
if (!MetadataArtifactLoader.IsValidArtifact(resourceName))
{
throw EntityUtil.Metadata(Strings.InvalidMetadataPath);
}
break;
}
}
///
/// Splits the supplied path into the assembly portion and the resource
/// part (if any)
///
/// The resource path to parse
/// An array of (two) strings containing the assembly name
/// and the resource name
private static void ParseResourcePath(string path, out string assemblyName, out string resourceName)
{
// Extract the components from the path
int prefixLength = MetadataArtifactLoader.resPathPrefix.Length;
string[] result = path.Substring(prefixLength).Split(
new string[] {
MetadataArtifactLoader.resPathSeparator,
MetadataArtifactLoader.altPathSeparator
},
StringSplitOptions.RemoveEmptyEntries
);
if (result.Length == 0 || result.Length > 2)
{
throw EntityUtil.Metadata(Strings.InvalidMetadataPath);
}
if (result.Length >= 1)
{
assemblyName = result[0];
}
else
{
assemblyName = null;
}
if (result.Length == 2)
{
resourceName = result[1];
}
else
{
resourceName = null;
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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