StorageEntityTypeMapping.cs source code in C# .NET

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                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Mapping / StorageEntityTypeMapping.cs / 1305376 / StorageEntityTypeMapping.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;
 
namespace System.Data.Mapping { 
    /// 
    /// Mapping metadata for Entity type. 
    /// If an EntitySet represents entities of more than one type, than we will have
    /// more than one EntityTypeMapping for an EntitySet( For ex : if
    /// PersonSet Entity extent represents entities of types Person and Customer,
    /// than we will have two EntityType Mappings under mapping for PersonSet). 
    /// 
    ///  
    /// For Example if conceptually you could represent the CS MSL file as following 
    /// --Mapping
    ///   --EntityContainerMapping ( CNorthwind-->SNorthwind ) 
    ///     --EntitySetMapping
    ///       --EntityTypeMapping
    ///         --TableMappingFragment
    ///           --EntityKey 
    ///             --ScalarPropertyMap
    ///           --ScalarPropertyMap 
    ///       --EntityTypeMapping 
    ///         --TableMappingFragment
    ///           --EntityKey 
    ///             --ScalarPropertyMap
    ///           --ComplexPropertyMap
    ///             --ScalarPropertyMap
    ///             --ScalarProperyMap 
    ///           --ScalarPropertyMap
    ///     --AssociationSetMapping 
    ///       --AssociationTypeMapping 
    ///         --TableMappingFragment
    ///           --EndPropertyMap 
    ///             --ScalarPropertyMap
    ///             --ScalarProperyMap
    ///           --EndPropertyMap
    ///             --ScalarPropertyMap 
    ///   --EntityContainerMapping ( CMyDatabase-->SMyDatabase )
    ///     --CompositionSetMapping 
    ///       --CompositionTypeMapping 
    ///         --TableMappingFragment
    ///           --ParentEntityKey 
    ///             --ScalarPropertyMap
    ///             --ScalarPropertyMap
    ///           --EntityKey
    ///             --ScalarPropertyMap 
    ///             --ScalarPropertyMap
    ///           --ComplexPropertyMap 
    ///             --ScalarPropertyMap 
    ///             --ScalarProperyMap
    ///           --ScalarPropertyMap 
    /// This class represents the metadata for all entity Type map elements in the
    /// above example. Users can access the table mapping fragments under the
    /// entity type mapping through this class.
    ///  

    internal class StorageEntityTypeMapping : StorageTypeMapping { 
        #region Constructors 
        /// 
        /// Construct the new EntityTypeMapping object. 
        /// 
        /// Set Mapping that contains this Type mapping 
        internal StorageEntityTypeMapping(StorageSetMapping setMapping)
            : base(setMapping) { 
        }
        #endregion 
 
        #region Fields
        private Dictionary m_entityTypes = new Dictionary(StringComparer.Ordinal);  //Types for which the mapping holds true for. 
        private Dictionary m_isOfEntityTypes = new Dictionary(StringComparer.Ordinal);  //Types for which the mapping holds true for
        // not only the type specified but the sub-types of that type as well.
        #endregion
 
        #region Properties
        ///  
        /// a list of TypeMetadata that this mapping holds true for. 
        /// 
        internal override ReadOnlyCollection Types { 
            get {
                return new List(m_entityTypes.Values).AsReadOnly();
            }
        } 

        ///  
        /// a list of TypeMetadatas for which the mapping holds true for 
        /// not only the type specified but the sub-types of that type as well.
        ///  
        internal override ReadOnlyCollection IsOfTypes {
            get {
                return new List(m_isOfEntityTypes.Values).AsReadOnly();
            } 
        }
        #endregion 
 

 
        #region Methods
        /// 
        /// Add a Type to the list of types that this mapping is valid for
        ///  
        internal void AddType(EdmType type) {
            this.m_entityTypes.Add(type.FullName, type); 
        } 

        ///  
        /// Add a Type to the list of Is-Of types that this mapping is valid for
        /// 
        internal void AddIsOfType(EdmType type) {
            this.m_isOfEntityTypes.Add(type.FullName, type); 
        }
 
 

        internal EntityType GetContainerType(string memberName) { 
            foreach (EntityType type in m_entityTypes.Values) {
                if (type.Properties.Contains(memberName))
                {
                    return type; 
                }
            } 
 
            foreach (EntityType type in m_isOfEntityTypes.Values)
            { 
                if (type.Properties.Contains(memberName))
                {
                    return type;
                } 
            }
            return null; 
        } 

 
        /// 
        /// 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("EntityTypeMapping"); 
            sb.Append("   ");
            foreach (EdmType type in m_entityTypes.Values) {
                sb.Append("Types:");
                sb.Append(type.FullName); 
                sb.Append("   ");
            } 
            foreach (EdmType type in m_isOfEntityTypes.Values) { 
                sb.Append("Is-Of Types:");
                sb.Append(type.FullName); 
                sb.Append("   ");
            }

 
            Console.WriteLine(sb.ToString());
            foreach (StorageMappingFragment fragment in MappingFragments) { 
                fragment.Print(index + 5); 
            }
        } 
        #endregion
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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StorageEntityTypeMapping.cs source code in C# .NET

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