StorageConditionPropertyMapping.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Mapping / StorageConditionPropertyMapping.cs / 1305376 / StorageConditionPropertyMapping.cs
                        

                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

using System; 
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using System.Data.Metadata.Edm; 

namespace System.Data.Mapping { 
    ///  
    /// Mapping metadata for Conditional property mapping on a type.
    /// Condition Property Mapping specifies a Condition either on the C side property or S side property. 
    /// 
    /// 
    /// 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 )
    ///           --ConditionProperyMap ( constant value-->SMemberMetadata )
    ///       --EntityTypeMapping 
    ///         --TableMappingFragment
    ///           --EntityKey 
    ///             --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///           --ComplexPropertyMap
    ///             --ComplexTypeMap 
    ///               --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata )
    ///               --ScalarProperyMap ( CMemberMetadata-->SMemberMetadata )
    ///           --ConditionProperyMap ( constant value-->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 )
    ///           --ConditionPropertyMap ( CMemberMetadata-->Constant value )
    ///           --ComplexPropertyMap 
    ///             --ComplexTypeMap
    ///               --ScalarPropertyMap ( CMemberMetadata-->SMemberMetadata ) 
    ///               --ConditionProperyMap ( constant value-->SMemberMetadata ) 
    ///           --ScalarPropertyMap ( CMemberMetadata-->Constant value )
    /// This class represents the metadata for all the condition property map elements in the 
    /// above example.
    /// 
    internal class StorageConditionPropertyMapping : StoragePropertyMapping {
        #region Constructors 
        /// 
        /// Construct a new condition Property mapping object 
        ///  
        /// 
        ///  
        /// 
        /// 
        internal StorageConditionPropertyMapping(EdmProperty cdmMember, EdmProperty columnMember
            , object value, Nullable isNull) : base(cdmMember) { 
            Debug.Assert((cdmMember != null) || (columnMember != null), "Both CDM and Column Members can not be specified for Condition Mapping");
            Debug.Assert((cdmMember == null) || (columnMember == null), "Either CDM or Column Members has to be specified for Condition Mapping"); 
            Debug.Assert((isNull.HasValue) || (value != null), "Both Value and IsNull can not be specified on Condition Mapping"); 
            Debug.Assert(!(isNull.HasValue) || (value == null), "Either Value or IsNull has to be specified on Condition Mapping");
            this.m_columnMember = columnMember; 
            this.m_value = value;
            this.m_isNull = isNull;
        }
        #endregion 

        #region Fields 
        EdmProperty m_columnMember; // Column EdmMember for which the condition is specified. 
        object m_value;  //value for the condition thats being mapped
        Nullable m_isNull; 
        #endregion

        #region Properties
        ///  
        /// Value for the condition
        ///  
        internal object Value { 
            get {
                return this.m_value; 
            }
        }

        ///  
        /// Whether the property is being mapped to Null or NotNull
        ///  
        internal Nullable IsNull { 
            get {
                return this.m_isNull; 
            }
        }

 
        /// 
        /// ColumnMember for which the Condition Map is being specified 
        ///  
        internal EdmProperty ColumnProperty {
            get { 
                return this.m_columnMember;
            }
        }
        #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("ConditionPropertyMapping"); 
            sb.Append("   "); 
            if (this.EdmProperty != null) {
                sb.Append("Name:"); 
                sb.Append(this.EdmProperty.Name);
                sb.Append("   ");
            }
            if (this.ColumnProperty != null) { 
                sb.Append("Column Name:");
                sb.Append(this.ColumnProperty.Name); 
                sb.Append("   "); 
            }
            if (this.Value != null) { 
                sb.Append("Value:");
                sb.Append("'" + Value + "'");
                sb.Append("   ");
                sb.Append("Value CLR Type:"); 
                sb.Append("'" + Value.GetType() + "'");
                sb.Append("   "); 
            } 
            sb.Append("Value TypeMetadata:");
            EdmType memberType = (ColumnProperty != null) ? ColumnProperty.TypeUsage.EdmType : null; 
            if (memberType != null)
            {
                sb.Append("'" + memberType.FullName + "'");
                sb.Append("   "); 
            }
            if (this.IsNull.HasValue) { 
                sb.Append("IsNull:"); 
                sb.Append(this.IsNull);
                sb.Append("   "); 
            }
            Console.WriteLine(sb.ToString());
        }
        #endregion 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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