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/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Mapping / StorageEntitySetMapping.cs / 1305376 / StorageEntitySetMapping.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Text; using System.Data.Metadata.Edm; using System.Diagnostics; namespace System.Data.Mapping { ////// Represents the Mapping metadata for an EnitytSet in CS space. /// ////// For Example if conceptually you could represent the CS MSL file as following /// --Mapping /// --EntityContainerMapping ( CNorthwind-->SNorthwind ) /// --EntitySetMapping /// --EntityTypeMapping /// --TableMappingFragment /// --EntityTypeMapping /// --TableMappingFragment /// --AssociationSetMapping /// --AssociationTypeMapping /// --TableMappingFragment /// --EntityContainerMapping ( CMyDatabase-->SMyDatabase ) /// --CompositionSetMapping /// --CompositionTypeMapping /// This class represents the metadata for the EntitySetMapping elements in the /// above example. And it is possible to access the EntityTypeMaps underneath it. /// internal class StorageEntitySetMapping : StorageSetMapping { #region Constructors ////// Construct a EntitySet mapping object /// /// EntitySet metadata object /// The entity Container Mapping that contains this Set mapping internal StorageEntitySetMapping(EntitySet extent, StorageEntityContainerMapping entityContainerMapping) : base(extent, entityContainerMapping) { m_functionMappings = new List(); m_implicitlyMappedAssociationSetEnds = new List (); } #endregion #region Fields private readonly List m_functionMappings; private readonly List m_implicitlyMappedAssociationSetEnds; #endregion #region Properties /// /// Gets all function mappings for this entity set. /// internal IListFunctionMappings { get { return m_functionMappings.AsReadOnly(); } } /// /// Gets all association sets that are implicitly "covered" through function mappings. /// internal IListImplicitlyMappedAssociationSetEnds { get { return m_implicitlyMappedAssociationSetEnds.AsReadOnly(); } } /// /// Whether the EntitySetMapping has empty content /// Returns true if there are no Function Maps and no table Mapping fragments /// internal override bool HasNoContent { get { if (m_functionMappings.Count != 0) { return false; } return base.HasNoContent; } } #endregion #region Methods ////// This method is primarily for debugging purposes. /// Will be removed shortly. /// internal override void Print(int index) { StorageEntityContainerMapping.GetPrettyPrintString(ref index); StringBuilder sb = new StringBuilder(); sb.Append("EntitySetMapping"); sb.Append(" "); sb.Append("Name:"); sb.Append(this.Set.Name); if (this.QueryView != null) { sb.Append(" "); sb.Append("Query View:"); sb.Append(this.QueryView); } Console.WriteLine(sb.ToString()); foreach (StorageTypeMapping typeMapping in TypeMappings) { typeMapping.Print(index+5); } foreach (StorageEntityTypeFunctionMapping functionMappping in m_functionMappings) { functionMappping.Print(index + 10); } } ////// Requires: /// - Function mapping refers to a sub-type of this entity set's element type /// - Function mappings for types are not redundantly specified /// Adds a new function mapping for this class. /// /// Function mapping to add. May not be null. internal void AddFunctionMapping(StorageEntityTypeFunctionMapping functionMapping) { AssertFunctionMappingInvariants(functionMapping); m_functionMappings.Add(functionMapping); // check if any association sets are indirectly mapped within this function mapping // through association navigation bindings if (null != functionMapping.DeleteFunctionMapping) { m_implicitlyMappedAssociationSetEnds.AddRange(functionMapping.DeleteFunctionMapping.CollocatedAssociationSetEnds); } if (null != functionMapping.InsertFunctionMapping) { m_implicitlyMappedAssociationSetEnds.AddRange(functionMapping.InsertFunctionMapping.CollocatedAssociationSetEnds); } if (null != functionMapping.UpdateFunctionMapping) { m_implicitlyMappedAssociationSetEnds.AddRange(functionMapping.UpdateFunctionMapping.CollocatedAssociationSetEnds); } } [Conditional("DEBUG")] internal void AssertFunctionMappingInvariants(StorageEntityTypeFunctionMapping functionMapping) { Debug.Assert(null != functionMapping, "function mapping must not be null"); Debug.Assert(functionMapping.EntityType.Equals(this.Set.ElementType) || Helper.IsSubtypeOf(functionMapping.EntityType, this.Set.ElementType), "attempting to add a function mapping with the wrong entity type"); foreach (StorageEntityTypeFunctionMapping existingFunctionMapping in m_functionMappings) { Debug.Assert(!existingFunctionMapping.EntityType.Equals(functionMapping.EntityType), "function mapping already exists for this type"); } } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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