StorageMappingFragment.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Mapping / StorageMappingFragment.cs / 1305376 / StorageMappingFragment.cs
                        
                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

using System; 
using System.Collections.Generic;
using System.Linq;
using System.Collections.ObjectModel;
using System.Text; 
using System.Data.Metadata.Edm;
using System.Diagnostics; 
 
namespace System.Data.Mapping {
    ///  
    /// Represents the metadata for mapping fragment.
    /// A set of mapping fragments makes up the Set mappings( EntitySet, AssociationSet or CompositionSet )
    /// Each MappingFragment provides mapping for those properties of a type that map to a single table.
    ///  
    /// 
    /// For Example if conceptually you could represent the CS MSL file as following 
    /// --Mapping 
    ///   --EntityContainerMapping ( CNorthwind-->SNorthwind )
    ///     --EntitySetMapping 
    ///       --EntityTypeMapping
    ///         --TableMappingFragment
    ///           --EntityKey
    ///             --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///           --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata )
    ///       --EntityTypeMapping 
    ///         --TableMappingFragment 
    ///           --EntityKey
    ///             --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///           --ComplexPropertyMap
    ///             --ComplexTypeMapping
    ///               --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata )
    ///               --ScalarProperyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///               --DiscriminatorProperyMap ( constant value-->SMemberMetadata )
    ///             --ComplexTypeMapping 
    ///               --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///               --ScalarProperyMap ( CMemberMetadata-->SMemberMetadata )
    ///               --DiscriminatorProperyMap ( constant value-->SMemberMetadata ) 
    ///           --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata )
    ///     --AssociationSetMapping
    ///       --AssociationTypeMapping
    ///         --TableMappingFragment 
    ///           --EndPropertyMap
    ///             --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///             --ScalarProperyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///           --EndPropertyMap
    ///             --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///   --EntityContainerMapping ( CMyDatabase-->SMyDatabase )
    ///     --CompositionSetMapping
    ///       --CompositionTypeMapping
    ///         --TableMappingFragment 
    ///           --ParentEntityKey
    ///             --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///             --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///           --EntityKey
    ///             --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///             --ScalarPropertyMap ( CMemberMetadata-->Constant value )
    ///           --ComplexPropertyMap
    ///             --ComplexTypeMapping
    ///               --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///               --ScalarProperyMap ( CMemberMetadata-->SMemberMetadata )
    ///           --ScalarPropertyMap ( CMemberMetadata-->Constant value ) 
    /// This class represents the metadata for all the mapping fragment elements in the 
    /// above example. Users can access all the top level constructs of
    /// MappingFragment element like EntityKey map, Property Maps, Discriminator 
    /// property through this mapping fragment class.
    /// 
    internal class StorageMappingFragment {
        #region Constructors 
        /// 
        /// Construct a new Mapping Fragment object 
        ///  
        /// 
        ///  
        internal StorageMappingFragment(EntitySet tableExtent, StorageTypeMapping typeMapping, bool distinctFlag) {
            Debug.Assert(tableExtent != null, "Table should not be null when constructing a Mapping Fragment");
            Debug.Assert(typeMapping != null, "TypeMapping should not be null when constructing a Mapping Fragment");
            this.m_tableExtent = tableExtent; 
            this.m_typeMapping = typeMapping;
            this.m_isSQueryDistinct = distinctFlag; 
        } 
        #endregion
 
        #region Fields
        EntitySet m_tableExtent;  //table extent from which the properties are mapped under this fragment
        StorageTypeMapping m_typeMapping;  //Type mapping under which this mapping fragment exists
        Dictionary m_conditionProperties = new Dictionary(EqualityComparer.Default);  //Condition property mappings for this mapping fragment 
        List m_properties = new List();  //All the other properties
        int m_startLineNumber; //Line Number for MappingFragment element start tag 
        int m_startLinePosition; //Line position for MappingFragment element start tag 
        int m_endLineNumber; //Line Number for MappingFragment element end tag
        int m_endLinePosition; //Line position for MappingFragment element end tag 
        bool m_isSQueryDistinct;
        #endregion

        #region Properties 
        /// 
        /// The table from which the properties are mapped in this fragment 
        ///  
        internal EntitySet TableSet {
            get { 
                return this.m_tableExtent;
            }
        }
 
        internal bool IsSQueryDistinct
        { 
            get { return m_isSQueryDistinct; } 
        }
 
        /// 
        /// Returns all the property mappings defined in the complex type mapping
        /// including Properties and Condition Properties
        ///  
        internal ReadOnlyCollection AllProperties
        { 
            get 
            {
                List properties = new List(); 
                properties.AddRange(m_properties);
                properties.AddRange(m_conditionProperties.Values);
                return properties.AsReadOnly();
            } 
        }
 
        ///  
        /// Returns all the property mappings defined in the complex type mapping
        /// including Properties and Condition Properties 
        /// 
        internal ReadOnlyCollection Properties
        {
            get 
            {
                return m_properties.AsReadOnly(); 
            } 
        }
 

        ///// 
        ///// The Extent Mapping that contains this Mapping Fragment.
        /////  
        //internal StorageSetMapping ExtentMapping {
        //    get { 
        //        return this.m_typeMapping.SetMapping; 
        //    }
        //} 

        ///// 
        ///// The Type Mapping that contains this Mapping Fragment.
        /////  
        //internal StorageTypeMapping TypeMapping {
        //    get { 
        //        return this.m_typeMapping; 
        //    }
        //} 

        /// 
        /// Line Number in MSL file where the Mapping Fragment Element's Start Tag is present.
        ///  
        internal int StartLineNumber {
            get { 
                return m_startLineNumber; 
            }
            set { 
                m_startLineNumber = value;
            }
        }
 
        /// 
        /// Line Position in MSL file where the Mapping Fragment Element's Start Tag is present. 
        ///  
        internal int StartLinePosition {
            get { 
                return m_startLinePosition;
            }
            set {
                m_startLinePosition = value; 
            }
        } 
 
        /// 
        /// Line Number in MSL file where the Mapping Fragment Element's End Tag is present. 
        /// 
        internal int EndLineNumber {
            //get {
            //    return m_endLineNumber; 
            //}
            set { 
                m_endLineNumber = value; 
            }
        } 


        /// 
        /// Line Position in MSL file where the Mapping Fragment Element's End Tag is present. 
        /// 
        internal int EndLinePosition { 
            //get { 
            //    return m_endLinePosition;
            //} 
            set {
                m_endLinePosition = value;
            }
        } 

        ///  
        /// File URI of the MSL file 
        /// 
        //This should not be stored on the Fragment. Probably it should go on schema. 
        //But this requires some thinking before we can finally decide where it should go.
        internal string SourceLocation {
            get {
                return this.m_typeMapping.SetMapping.EntityContainerMapping.SourceLocation; 
            }
        } 
        #endregion 

        #region Methods 
        /// 
        /// Add a property mapping as a child of this mapping fragment
        /// 
        /// child property mapping to be added 
        internal void AddProperty(StoragePropertyMapping prop)
        { 
            this.m_properties.Add(prop); 
        }
 
        /// 
        /// Add a condition property mapping as a child of this complex property mapping
        /// Condition Property Mapping specifies a Condition either on the C side property or S side property.
        ///  
        /// The mapping that needs to be added
        internal bool AddConditionProperty(StorageConditionPropertyMapping conditionPropertyMap) 
        { 
            //Same Member can not have more than one Condition with in the
            //same Mapping Fragment. 
            EdmProperty conditionMember = (conditionPropertyMap.EdmProperty != null) ? conditionPropertyMap.EdmProperty : conditionPropertyMap.ColumnProperty;
            Debug.Assert(conditionMember != null);
            if (m_conditionProperties.ContainsKey(conditionMember))
            { 
                return false;
            } 
            m_conditionProperties.Add(conditionMember, conditionPropertyMap); 
            return true;
        } 

        /// 
        /// This method is primarily for debugging purposes.
        /// Will be removed shortly. 
        /// 
        ///  
        internal virtual void Print(int index) { 
            StorageEntityContainerMapping.GetPrettyPrintString(ref index);
            StringBuilder sb = new StringBuilder(); 
            sb.Append("MappingFragment");
            sb.Append("   ");
            sb.Append("Table Name:");
            sb.Append(this.m_tableExtent.Name); 

            Console.WriteLine(sb.ToString()); 
            foreach (StorageConditionPropertyMapping conditionMap in m_conditionProperties.Values) 
                (conditionMap).Print(index + 5);
            foreach (StoragePropertyMapping propertyMapping in m_properties) 
            {
                propertyMapping.Print(index + 5);
            }
        } 
        #endregion
    } 
} 

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

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