Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataEntity / System / Data / Metadata / Edm / EntityTypeBase.cs / 3 / EntityTypeBase.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....], [....] //--------------------------------------------------------------------- using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Data.Common; using System.Diagnostics; using System.Text; namespace System.Data.Metadata.Edm { ////// Represents the Entity Type /// public abstract class EntityTypeBase : StructuralType { #region Constructors ////// Initializes a new instance of Entity Type /// /// name of the entity type /// namespace of the entity type /// version of the entity type /// dataSpace in which this edmtype belongs to ///Thrown if either name, namespace or version arguments are null internal EntityTypeBase(string name, string namespaceName, DataSpace dataSpace) : base(name, namespaceName, dataSpace) { _keyMembers = new ReadOnlyMetadataCollection(new MetadataCollection ()); } #endregion #region Fields private readonly ReadOnlyMetadataCollection _keyMembers; private string[] _keyMemberNames; #endregion #region Properties /// /// Returns the list of all the key members for this entity type /// [MetadataProperty(BuiltInTypeKind.EdmMember, true)] public ReadOnlyMetadataCollectionKeyMembers { get { // Since we allow entity types with no keys, we should first check if there are // keys defined on the base class. If yes, then return the keys otherwise, return // the keys defined on this class if (this.BaseType != null && ((EntityTypeBase)this.BaseType).KeyMembers.Count != 0) { Debug.Assert(_keyMembers.Count == 0, "Since the base type have keys, current type cannot have keys defined"); return ((EntityTypeBase)this.BaseType).KeyMembers; } else { return _keyMembers; } } } /// /// Returns the list of the member names that form the key for this entity type /// Perf Bug #529294: To cache the list of member names that form the key for the entity type /// internal string[] KeyMemberNames { get { String[] keyNames = _keyMemberNames; if (keyNames == null) { keyNames = new string[this.KeyMembers.Count]; for (int i = 0; i < keyNames.Length; i++) { keyNames[i] = this.KeyMembers[i].Name; } _keyMemberNames = keyNames; } Debug.Assert(_keyMemberNames.Length == this.KeyMembers.Count, "This list is out of [....] with the key members count. This property was called before all the keymembers were added"); return _keyMemberNames; } } #endregion #region Methods ////// Returns the list of all the key members for this entity type /// ///if member argument is null ///Thrown if the EntityType has a base type of another EntityTypeBase. In this case KeyMembers should be added to the base type ///If the EntityType instance is in ReadOnly state internal void AddKeyMember(EdmMember member) { EntityUtil.GenericCheckArgumentNull(member, "member"); Util.ThrowIfReadOnly(this); Debug.Assert(this.BaseType == null || ((EntityTypeBase)this.BaseType).KeyMembers.Count == 0, "Key cannot be added if there is a basetype with keys"); if (!Members.Contains(member)) { this.AddMember(member); } _keyMembers.Source.Add(member); } ////// Makes this property readonly /// internal override void SetReadOnly() { if (!IsReadOnly) { _keyMembers.Source.SetReadOnly(); base.SetReadOnly(); } } ////// Checks for each property to be non-null and then adds it to the member collection /// /// members for this type /// the membersCollection to which the members should be added internal static void CheckAndAddMembers(IEnumerablemembers, EntityType entityType) { foreach (EdmMember member in members) { // Check for each property to be non-null if (null == member) throw EntityUtil.CollectionParameterElementIsNull("members"); // Add the property to the member collection entityType.AddMember(member); } } /// /// Checks for each key member to be non-null /// also check for it to be present in the members collection /// and then adds it to the KeyMembers collection. /// /// Throw if the key member is not already in the members /// collection. Cannot do much other than that as the /// Key members is just an Ienumerable of the names /// of the members. /// /// the list of keys (member names) to be added for the given type internal void CheckAndAddKeyMembers(IEnumerablekeyMembers) { foreach (string keyMember in keyMembers) { // Check for each keymember to be non-null if (null == keyMember) { throw EntityUtil.CollectionParameterElementIsNull("keyMembers"); } // Check for whether the key exists in the members collection EdmMember member; if (!Members.TryGetValue(keyMember, false, out member)) { throw EntityUtil.Argument(System.Data.Entity.Strings.InvalidKeyMember(keyMember)); //--- to do, identify the right exception to throw here } // Add the key member to the key member collection AddKeyMember(member); } } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....], [....] //--------------------------------------------------------------------- using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Data.Common; using System.Diagnostics; using System.Text; namespace System.Data.Metadata.Edm { ////// Represents the Entity Type /// public abstract class EntityTypeBase : StructuralType { #region Constructors ////// Initializes a new instance of Entity Type /// /// name of the entity type /// namespace of the entity type /// version of the entity type /// dataSpace in which this edmtype belongs to ///Thrown if either name, namespace or version arguments are null internal EntityTypeBase(string name, string namespaceName, DataSpace dataSpace) : base(name, namespaceName, dataSpace) { _keyMembers = new ReadOnlyMetadataCollection(new MetadataCollection ()); } #endregion #region Fields private readonly ReadOnlyMetadataCollection _keyMembers; private string[] _keyMemberNames; #endregion #region Properties /// /// Returns the list of all the key members for this entity type /// [MetadataProperty(BuiltInTypeKind.EdmMember, true)] public ReadOnlyMetadataCollectionKeyMembers { get { // Since we allow entity types with no keys, we should first check if there are // keys defined on the base class. If yes, then return the keys otherwise, return // the keys defined on this class if (this.BaseType != null && ((EntityTypeBase)this.BaseType).KeyMembers.Count != 0) { Debug.Assert(_keyMembers.Count == 0, "Since the base type have keys, current type cannot have keys defined"); return ((EntityTypeBase)this.BaseType).KeyMembers; } else { return _keyMembers; } } } /// /// Returns the list of the member names that form the key for this entity type /// Perf Bug #529294: To cache the list of member names that form the key for the entity type /// internal string[] KeyMemberNames { get { String[] keyNames = _keyMemberNames; if (keyNames == null) { keyNames = new string[this.KeyMembers.Count]; for (int i = 0; i < keyNames.Length; i++) { keyNames[i] = this.KeyMembers[i].Name; } _keyMemberNames = keyNames; } Debug.Assert(_keyMemberNames.Length == this.KeyMembers.Count, "This list is out of [....] with the key members count. This property was called before all the keymembers were added"); return _keyMemberNames; } } #endregion #region Methods ////// Returns the list of all the key members for this entity type /// ///if member argument is null ///Thrown if the EntityType has a base type of another EntityTypeBase. In this case KeyMembers should be added to the base type ///If the EntityType instance is in ReadOnly state internal void AddKeyMember(EdmMember member) { EntityUtil.GenericCheckArgumentNull(member, "member"); Util.ThrowIfReadOnly(this); Debug.Assert(this.BaseType == null || ((EntityTypeBase)this.BaseType).KeyMembers.Count == 0, "Key cannot be added if there is a basetype with keys"); if (!Members.Contains(member)) { this.AddMember(member); } _keyMembers.Source.Add(member); } ////// Makes this property readonly /// internal override void SetReadOnly() { if (!IsReadOnly) { _keyMembers.Source.SetReadOnly(); base.SetReadOnly(); } } ////// Checks for each property to be non-null and then adds it to the member collection /// /// members for this type /// the membersCollection to which the members should be added internal static void CheckAndAddMembers(IEnumerablemembers, EntityType entityType) { foreach (EdmMember member in members) { // Check for each property to be non-null if (null == member) throw EntityUtil.CollectionParameterElementIsNull("members"); // Add the property to the member collection entityType.AddMember(member); } } /// /// Checks for each key member to be non-null /// also check for it to be present in the members collection /// and then adds it to the KeyMembers collection. /// /// Throw if the key member is not already in the members /// collection. Cannot do much other than that as the /// Key members is just an Ienumerable of the names /// of the members. /// /// the list of keys (member names) to be added for the given type internal void CheckAndAddKeyMembers(IEnumerablekeyMembers) { foreach (string keyMember in keyMembers) { // Check for each keymember to be non-null if (null == keyMember) { throw EntityUtil.CollectionParameterElementIsNull("keyMembers"); } // Check for whether the key exists in the members collection EdmMember member; if (!Members.TryGetValue(keyMember, false, out member)) { throw EntityUtil.Argument(System.Data.Entity.Strings.InvalidKeyMember(keyMember)); //--- to do, identify the right exception to throw here } // Add the key member to the key member collection AddKeyMember(member); } } #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
- CodeTypeMember.cs
- CompilationUtil.cs
- AnnotationMap.cs
- ISFClipboardData.cs
- AdornerPresentationContext.cs
- AdapterDictionary.cs
- OperandQuery.cs
- SqlMetaData.cs
- WebServiceHandler.cs
- PerSessionInstanceContextProvider.cs
- SqlLiftWhereClauses.cs
- ValidationHelper.cs
- ADMembershipUser.cs
- SecurityImpersonationBehavior.cs
- WebPart.cs
- Crc32.cs
- OperationAbortedException.cs
- BlurBitmapEffect.cs
- TimestampInformation.cs
- TreeBuilderBamlTranslator.cs
- TextElementEnumerator.cs
- ToolStripStatusLabel.cs
- PermissionListSet.cs
- XmlParser.cs
- BufferedGraphicsManager.cs
- CompiledAction.cs
- XmlLanguage.cs
- SystemNetHelpers.cs
- ChtmlMobileTextWriter.cs
- WeakEventTable.cs
- TimeStampChecker.cs
- InputElement.cs
- Double.cs
- CustomErrorCollection.cs
- processwaithandle.cs
- ForwardPositionQuery.cs
- NumberSubstitution.cs
- RuntimeIdentifierPropertyAttribute.cs
- QuadraticBezierSegment.cs
- VisualStyleElement.cs
- ProviderManager.cs
- TdsParserSessionPool.cs
- PartialCachingAttribute.cs
- processwaithandle.cs
- DbReferenceCollection.cs
- UserValidatedEventArgs.cs
- ServiceDebugBehavior.cs
- RelationshipConstraintValidator.cs
- IncrementalCompileAnalyzer.cs
- SchemaCollectionPreprocessor.cs
- ConfigurationLocation.cs
- DataGridViewComboBoxColumn.cs
- QuaternionAnimationBase.cs
- Frame.cs
- TextWriterTraceListener.cs
- RelatedPropertyManager.cs
- WhiteSpaceTrimStringConverter.cs
- SqlLiftWhereClauses.cs
- SslStream.cs
- TablePatternIdentifiers.cs
- TableLayoutPanelCellPosition.cs
- SmtpTransport.cs
- InkCanvasAutomationPeer.cs
- XmlObjectSerializerWriteContextComplex.cs
- SqlCaseSimplifier.cs
- SqlTrackingQuery.cs
- ListItemCollection.cs
- Oid.cs
- TranslateTransform.cs
- PageThemeCodeDomTreeGenerator.cs
- QueryExpr.cs
- XmlNamedNodeMap.cs
- Effect.cs
- PropertyDescriptor.cs
- ProfileService.cs
- WasEndpointConfigContainer.cs
- ControlBuilder.cs
- ToolStripPanelRenderEventArgs.cs
- PageBreakRecord.cs
- CultureData.cs
- GenericUriParser.cs
- CombinedGeometry.cs
- StateItem.cs
- FormViewCommandEventArgs.cs
- ItemsPanelTemplate.cs
- ADConnectionHelper.cs
- DataGridTableCollection.cs
- HttpTransportSecurityElement.cs
- HttpHeaderCollection.cs
- ListViewInsertEventArgs.cs
- DataGridTableCollection.cs
- TextViewSelectionProcessor.cs
- ScrollBarAutomationPeer.cs
- DecodeHelper.cs
- GridViewSelectEventArgs.cs
- SerialPinChanges.cs
- AsymmetricCryptoHandle.cs
- TemplateBindingExtension.cs
- ListBox.cs
- UnknownBitmapEncoder.cs