Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / ndp / fx / src / DataEntity / System / Data / EntityModel / SchemaObjectModel / SchemaManager.cs / 1 / SchemaManager.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System; using System.Collections; using System.Collections.Generic; using System.Diagnostics; using System.Data.Metadata.Edm; using System.Data.Common.Utils; using System.Xml; using System.Data.Common; using System.Data.Entity; namespace System.Data.EntityModel.SchemaObjectModel { internal delegate void AttributeValueNotification(string token, ActionaddError); internal delegate DbProviderManifest ProviderManifestNeeded(Action addError); /// /// Class responsible for parsing,validating a collection of schema /// [System.Diagnostics.DebuggerDisplay("DataModel={DataModel}")] internal class SchemaManager { #region Instance Fields // This keeps track of all the possible namespaces encountered till now. This helps in displaying the error to the // user - if the particular type is not found, we can report whether the namespace was invalid or the type with the // given name was not found in the given namespace. This also helps in validating the namespace in the using elements private readonly HashSet_namespaceLookUpTable = new HashSet (StringComparer.Ordinal); // List of all the schema types across all the schemas. This is to ensure that there is no duplicate type encountered // across schemas private readonly SchemaElementLookUpTable _schemaTypes = new SchemaElementLookUpTable (); // We want to stop parsing/resolving/validation after the first 100 errors private const int MaxErrorCount = 100; // delay loaded private DbProviderManifest _providerManifest; private PrimitiveSchema _primitiveSchema; private readonly SchemaDataModelOption _dataModel; private readonly ProviderManifestNeeded _providerManifestNeeded; private readonly AttributeValueNotification _providerNotification; private readonly AttributeValueNotification _providerManifestTokenNotification; #endregion #region Constructor private SchemaManager(SchemaDataModelOption dataModel, AttributeValueNotification providerNotification, AttributeValueNotification providerManifestTokenNotification, ProviderManifestNeeded providerManifestNeeded) { _dataModel = dataModel; _providerNotification = providerNotification; _providerManifestTokenNotification = providerManifestTokenNotification; _providerManifestNeeded = providerManifestNeeded; } #endregion #region Public Methods public static IList LoadProviderManifest(XmlReader xmlReader, string location, bool checkForSystemNamespace, out Schema schema) { IList schemaCollection = new List (1); DbProviderManifest providerManifest = checkForSystemNamespace ? EdmProviderManifest.Instance : null; IList errors = ParseAndValidate(new XmlReader[] { xmlReader }, new string[] { location }, SchemaDataModelOption.ProviderManifestModel, providerManifest, out schemaCollection); // In case of errors, there are no schema in the schema collection if (schemaCollection.Count != 0) { schema = schemaCollection[0]; } else { Debug.Assert(errors.Count != 0, "There must be some error encountered"); schema = null; } return errors; } public static void NoOpAttributeValueNotification(string attributeValue, Action addError) { } public static IList ParseAndValidate(IEnumerable xmlReaders, IEnumerable sourceFilePaths, SchemaDataModelOption dataModel, DbProviderManifest providerManifest, out IList schemaCollection) { return ParseAndValidate(xmlReaders, sourceFilePaths, dataModel, NoOpAttributeValueNotification, NoOpAttributeValueNotification, delegate(Action addError) { return providerManifest == null ? MetadataItem.EdmProviderManifest : providerManifest; }, out schemaCollection); } public static IList ParseAndValidate(IEnumerable xmlReaders, IEnumerable sourceFilePaths, SchemaDataModelOption dataModel, AttributeValueNotification providerNotification, AttributeValueNotification providerManifestTokenNotification, ProviderManifestNeeded providerManifestNeeded, out IList schemaCollection) { SchemaManager schemaManager = new SchemaManager(dataModel, providerNotification, providerManifestTokenNotification, providerManifestNeeded); var errorCollection = new List (); schemaCollection = new List (); bool errorEncountered = false; List filePathList; if (sourceFilePaths != null) { filePathList = new List (sourceFilePaths); } else { filePathList = new List (); } int index = 0; foreach (XmlReader xmlReader in xmlReaders) { string location = null; if (filePathList.Count <= index) { TryGetBaseUri(xmlReader, out location); } else { location = filePathList[index]; } Schema schema; schema = new Schema(schemaManager); // If the number of errors exceeded the max error count, then return if (UpdateErrorCollectionAndCheckForMaxErrors(errorCollection, schema.Parse(xmlReader, location), ref errorEncountered)) { return errorCollection; } // Add the schema to the collection if there are no errors. There are errors in which schema do not have any namespace. // Also if there is an error encountered in one of the schema, we do not need to add the remaining schemas since // we will never go to the resolve phase. if (!errorEncountered) { schemaCollection.Add(schema); schemaManager.AddSchema(schema); } index++; } // If there are no errors encountered in the parsing stage, we can proceed to the // parsing and validating phase if (!errorEncountered) { foreach (Schema schema in schemaCollection) { if (UpdateErrorCollectionAndCheckForMaxErrors(errorCollection, schema.Resolve(), ref errorEncountered)) { return errorCollection; } } // If there are no errors encountered in the parsing stage, we can proceed to the // parsing and validating phase if (!errorEncountered) { foreach (Schema schema in schemaCollection) { if (UpdateErrorCollectionAndCheckForMaxErrors(errorCollection, schema.ValidateSchema(), ref errorEncountered)) { return errorCollection; } } } } return errorCollection; } /// /// Add the namespace of the given schema to the namespace lookup table /// public void AddSchema(Schema schema) { Debug.Assert(schema.DataModel == _dataModel, "DataModel must match"); if (_namespaceLookUpTable.Count == 0 && schema.DataModel != SchemaDataModelOption.ProviderManifestModel) { // Add the primitive type namespace to the namespace look up table if (this.PrimitiveSchema.Namespace != null) { _namespaceLookUpTable.Add(this.PrimitiveSchema.Namespace); } } // Add the namespace to the namespaceLookUpTable. // Its okay to have multiple schemas with the same namespace _namespaceLookUpTable.Add(schema.Namespace); } ////// Resolve the type - if the type is not found, return appropriate error /// ///public bool TryResolveType(string namespaceName, string typeName, out SchemaType schemaType) { // For resolving entity container names, namespace can be null string fullyQualifiedName = String.IsNullOrEmpty(namespaceName) ? typeName : namespaceName + "." + typeName; schemaType = SchemaTypes.LookUpEquivalentKey(fullyQualifiedName); if (schemaType != null) { return true; } return false; } /// /// Returns true if this is a valid namespace name or else returns false /// public bool IsValidNamespaceName(string namespaceName) { return _namespaceLookUpTable.Contains(namespaceName); } #endregion // Public Methods #region Private Methods ////// Checks if the xml reader has base uri. If it doesn't have, it adds error, other /// returns the location from the base uri /// ///internal static bool TryGetBaseUri(XmlReader xmlReader, out string location) { string baseUri = xmlReader.BaseURI; Uri uri = null; if (!string.IsNullOrEmpty(baseUri) && Uri.TryCreate(baseUri, UriKind.Absolute, out uri) && uri.Scheme == "file") { location = Helper.GetFileNameFromUri(uri); return true; } else { location = null; return false; } } /// /// Add the given list of newErrors to the error collection. If there is a error in the new errors, /// it sets the errorEncountered to true. Returns true if the number of errors encountered is more /// than max errors /// ///private static bool UpdateErrorCollectionAndCheckForMaxErrors(List errorCollection, IList newErrors, ref bool errorEncountered) { // If we have encountered error already in one of the schemas, then we don't need to check for errors in the remaining schemas. // Just keep aggregating the errors and throw them at the end. if (!errorEncountered) { if (!MetadataHelper.CheckIfAllErrorsAreWarnings(newErrors)) { errorEncountered = true; } } // assert that the number of errors is less than the max errors Debug.Assert(errorCollection.Count < MaxErrorCount, "Errors should be less than max errors"); // Add the new errors to the error collection errorCollection.AddRange(newErrors); if (errorCollection.Count >= MaxErrorCount) { return true; } return false; } #endregion #region Internal Properties internal SchemaElementLookUpTable SchemaTypes { get { return _schemaTypes; } } internal DbProviderManifest GetProviderManifest(Action addError) { if (_providerManifest == null) { _providerManifest = _providerManifestNeeded(addError); } return _providerManifest; } internal SchemaDataModelOption DataModel { get { return _dataModel; } } internal void EnsurePrimitiveSchemaIsLoaded() { if (_primitiveSchema == null) { _primitiveSchema = new PrimitiveSchema(this); } } internal PrimitiveSchema PrimitiveSchema { get { return _primitiveSchema; } } internal AttributeValueNotification ProviderNotification { get { return _providerNotification; } } internal AttributeValueNotification ProviderManifestTokenNotification { get { return _providerManifestTokenNotification; } } #endregion } } // 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; using System.Collections.Generic; using System.Diagnostics; using System.Data.Metadata.Edm; using System.Data.Common.Utils; using System.Xml; using System.Data.Common; using System.Data.Entity; namespace System.Data.EntityModel.SchemaObjectModel { internal delegate void AttributeValueNotification(string token, ActionaddError); internal delegate DbProviderManifest ProviderManifestNeeded(Action addError); /// /// Class responsible for parsing,validating a collection of schema /// [System.Diagnostics.DebuggerDisplay("DataModel={DataModel}")] internal class SchemaManager { #region Instance Fields // This keeps track of all the possible namespaces encountered till now. This helps in displaying the error to the // user - if the particular type is not found, we can report whether the namespace was invalid or the type with the // given name was not found in the given namespace. This also helps in validating the namespace in the using elements private readonly HashSet_namespaceLookUpTable = new HashSet (StringComparer.Ordinal); // List of all the schema types across all the schemas. This is to ensure that there is no duplicate type encountered // across schemas private readonly SchemaElementLookUpTable _schemaTypes = new SchemaElementLookUpTable (); // We want to stop parsing/resolving/validation after the first 100 errors private const int MaxErrorCount = 100; // delay loaded private DbProviderManifest _providerManifest; private PrimitiveSchema _primitiveSchema; private readonly SchemaDataModelOption _dataModel; private readonly ProviderManifestNeeded _providerManifestNeeded; private readonly AttributeValueNotification _providerNotification; private readonly AttributeValueNotification _providerManifestTokenNotification; #endregion #region Constructor private SchemaManager(SchemaDataModelOption dataModel, AttributeValueNotification providerNotification, AttributeValueNotification providerManifestTokenNotification, ProviderManifestNeeded providerManifestNeeded) { _dataModel = dataModel; _providerNotification = providerNotification; _providerManifestTokenNotification = providerManifestTokenNotification; _providerManifestNeeded = providerManifestNeeded; } #endregion #region Public Methods public static IList LoadProviderManifest(XmlReader xmlReader, string location, bool checkForSystemNamespace, out Schema schema) { IList schemaCollection = new List (1); DbProviderManifest providerManifest = checkForSystemNamespace ? EdmProviderManifest.Instance : null; IList errors = ParseAndValidate(new XmlReader[] { xmlReader }, new string[] { location }, SchemaDataModelOption.ProviderManifestModel, providerManifest, out schemaCollection); // In case of errors, there are no schema in the schema collection if (schemaCollection.Count != 0) { schema = schemaCollection[0]; } else { Debug.Assert(errors.Count != 0, "There must be some error encountered"); schema = null; } return errors; } public static void NoOpAttributeValueNotification(string attributeValue, Action addError) { } public static IList ParseAndValidate(IEnumerable xmlReaders, IEnumerable sourceFilePaths, SchemaDataModelOption dataModel, DbProviderManifest providerManifest, out IList schemaCollection) { return ParseAndValidate(xmlReaders, sourceFilePaths, dataModel, NoOpAttributeValueNotification, NoOpAttributeValueNotification, delegate(Action addError) { return providerManifest == null ? MetadataItem.EdmProviderManifest : providerManifest; }, out schemaCollection); } public static IList ParseAndValidate(IEnumerable xmlReaders, IEnumerable sourceFilePaths, SchemaDataModelOption dataModel, AttributeValueNotification providerNotification, AttributeValueNotification providerManifestTokenNotification, ProviderManifestNeeded providerManifestNeeded, out IList schemaCollection) { SchemaManager schemaManager = new SchemaManager(dataModel, providerNotification, providerManifestTokenNotification, providerManifestNeeded); var errorCollection = new List (); schemaCollection = new List (); bool errorEncountered = false; List filePathList; if (sourceFilePaths != null) { filePathList = new List (sourceFilePaths); } else { filePathList = new List (); } int index = 0; foreach (XmlReader xmlReader in xmlReaders) { string location = null; if (filePathList.Count <= index) { TryGetBaseUri(xmlReader, out location); } else { location = filePathList[index]; } Schema schema; schema = new Schema(schemaManager); // If the number of errors exceeded the max error count, then return if (UpdateErrorCollectionAndCheckForMaxErrors(errorCollection, schema.Parse(xmlReader, location), ref errorEncountered)) { return errorCollection; } // Add the schema to the collection if there are no errors. There are errors in which schema do not have any namespace. // Also if there is an error encountered in one of the schema, we do not need to add the remaining schemas since // we will never go to the resolve phase. if (!errorEncountered) { schemaCollection.Add(schema); schemaManager.AddSchema(schema); } index++; } // If there are no errors encountered in the parsing stage, we can proceed to the // parsing and validating phase if (!errorEncountered) { foreach (Schema schema in schemaCollection) { if (UpdateErrorCollectionAndCheckForMaxErrors(errorCollection, schema.Resolve(), ref errorEncountered)) { return errorCollection; } } // If there are no errors encountered in the parsing stage, we can proceed to the // parsing and validating phase if (!errorEncountered) { foreach (Schema schema in schemaCollection) { if (UpdateErrorCollectionAndCheckForMaxErrors(errorCollection, schema.ValidateSchema(), ref errorEncountered)) { return errorCollection; } } } } return errorCollection; } /// /// Add the namespace of the given schema to the namespace lookup table /// public void AddSchema(Schema schema) { Debug.Assert(schema.DataModel == _dataModel, "DataModel must match"); if (_namespaceLookUpTable.Count == 0 && schema.DataModel != SchemaDataModelOption.ProviderManifestModel) { // Add the primitive type namespace to the namespace look up table if (this.PrimitiveSchema.Namespace != null) { _namespaceLookUpTable.Add(this.PrimitiveSchema.Namespace); } } // Add the namespace to the namespaceLookUpTable. // Its okay to have multiple schemas with the same namespace _namespaceLookUpTable.Add(schema.Namespace); } ////// Resolve the type - if the type is not found, return appropriate error /// ///public bool TryResolveType(string namespaceName, string typeName, out SchemaType schemaType) { // For resolving entity container names, namespace can be null string fullyQualifiedName = String.IsNullOrEmpty(namespaceName) ? typeName : namespaceName + "." + typeName; schemaType = SchemaTypes.LookUpEquivalentKey(fullyQualifiedName); if (schemaType != null) { return true; } return false; } /// /// Returns true if this is a valid namespace name or else returns false /// public bool IsValidNamespaceName(string namespaceName) { return _namespaceLookUpTable.Contains(namespaceName); } #endregion // Public Methods #region Private Methods ////// Checks if the xml reader has base uri. If it doesn't have, it adds error, other /// returns the location from the base uri /// ///internal static bool TryGetBaseUri(XmlReader xmlReader, out string location) { string baseUri = xmlReader.BaseURI; Uri uri = null; if (!string.IsNullOrEmpty(baseUri) && Uri.TryCreate(baseUri, UriKind.Absolute, out uri) && uri.Scheme == "file") { location = Helper.GetFileNameFromUri(uri); return true; } else { location = null; return false; } } /// /// Add the given list of newErrors to the error collection. If there is a error in the new errors, /// it sets the errorEncountered to true. Returns true if the number of errors encountered is more /// than max errors /// ///private static bool UpdateErrorCollectionAndCheckForMaxErrors(List errorCollection, IList newErrors, ref bool errorEncountered) { // If we have encountered error already in one of the schemas, then we don't need to check for errors in the remaining schemas. // Just keep aggregating the errors and throw them at the end. if (!errorEncountered) { if (!MetadataHelper.CheckIfAllErrorsAreWarnings(newErrors)) { errorEncountered = true; } } // assert that the number of errors is less than the max errors Debug.Assert(errorCollection.Count < MaxErrorCount, "Errors should be less than max errors"); // Add the new errors to the error collection errorCollection.AddRange(newErrors); if (errorCollection.Count >= MaxErrorCount) { return true; } return false; } #endregion #region Internal Properties internal SchemaElementLookUpTable SchemaTypes { get { return _schemaTypes; } } internal DbProviderManifest GetProviderManifest(Action addError) { if (_providerManifest == null) { _providerManifest = _providerManifestNeeded(addError); } return _providerManifest; } internal SchemaDataModelOption DataModel { get { return _dataModel; } } internal void EnsurePrimitiveSchemaIsLoaded() { if (_primitiveSchema == null) { _primitiveSchema = new PrimitiveSchema(this); } } internal PrimitiveSchema PrimitiveSchema { get { return _primitiveSchema; } } internal AttributeValueNotification ProviderNotification { get { return _providerNotification; } } internal AttributeValueNotification ProviderManifestTokenNotification { get { return _providerManifestTokenNotification; } } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ApplicationInfo.cs
- ComplexPropertyEntry.cs
- XmlTextReader.cs
- TextCollapsingProperties.cs
- BaseProcessor.cs
- Win32SafeHandles.cs
- XmlSerializerFormatAttribute.cs
- ReservationCollection.cs
- CurrencyWrapper.cs
- DayRenderEvent.cs
- ObjectStateManagerMetadata.cs
- MessageBox.cs
- TreeBuilderXamlTranslator.cs
- LayoutInformation.cs
- CompatibleIComparer.cs
- MenuTracker.cs
- SizeAnimation.cs
- ComEventsMethod.cs
- IOThreadScheduler.cs
- DBBindings.cs
- MenuItemStyle.cs
- CodeSnippetTypeMember.cs
- GetReadStreamResult.cs
- Point3DKeyFrameCollection.cs
- StateMachineSubscriptionManager.cs
- DesignerAutoFormatCollection.cs
- MaskedTextBoxTextEditor.cs
- ContentPlaceHolder.cs
- Formatter.cs
- PngBitmapDecoder.cs
- SqlStatistics.cs
- AccessibleObject.cs
- EntryWrittenEventArgs.cs
- cache.cs
- SingleSelectRootGridEntry.cs
- StringPropertyBuilder.cs
- precedingsibling.cs
- EditorZoneBase.cs
- SafeHGlobalHandleCritical.cs
- WebPartCatalogAddVerb.cs
- DoubleCollectionConverter.cs
- DesignerHost.cs
- XPathAxisIterator.cs
- HealthMonitoringSection.cs
- TimeSpanStorage.cs
- ValidationRule.cs
- DebugHandleTracker.cs
- TemplateColumn.cs
- MbpInfo.cs
- ClientConfigurationSystem.cs
- DetailsViewCommandEventArgs.cs
- RuleElement.cs
- Math.cs
- FrameworkElementAutomationPeer.cs
- PrefixQName.cs
- NativeMethods.cs
- WorkflowPrinting.cs
- NavigationFailedEventArgs.cs
- CompModSwitches.cs
- TransactionBehavior.cs
- ArraySet.cs
- ConfigXmlCDataSection.cs
- _LocalDataStoreMgr.cs
- ConfigurationConverterBase.cs
- GeneralTransform.cs
- GroupByQueryOperator.cs
- ContainerFilterService.cs
- ThreadStartException.cs
- TaskFormBase.cs
- NonParentingControl.cs
- MessageFormatterConverter.cs
- TypeReference.cs
- BamlVersionHeader.cs
- ReliableSessionBindingElement.cs
- SymbolEqualComparer.cs
- WpfPayload.cs
- Schema.cs
- RangeBase.cs
- BufferedGraphicsManager.cs
- PersistencePipeline.cs
- OrthographicCamera.cs
- X509ChainPolicy.cs
- ImageSource.cs
- EntityDataReader.cs
- ParameterCollection.cs
- Ipv6Element.cs
- ThreadNeutralSemaphore.cs
- DrawingCollection.cs
- ModelFactory.cs
- TextWriterTraceListener.cs
- CodeArrayCreateExpression.cs
- PublisherMembershipCondition.cs
- DescendentsWalkerBase.cs
- DeadLetterQueue.cs
- GridSplitterAutomationPeer.cs
- DbProviderSpecificTypePropertyAttribute.cs
- BitmapEffectvisualstate.cs
- FormsAuthenticationConfiguration.cs
- ProviderException.cs
- WindowsUserNameSecurityTokenAuthenticator.cs