MetadataCacheItem.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataWeb / Server / System / Data / Services / Caching / MetadataCacheItem.cs / 1305376 / MetadataCacheItem.cs
                        
                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//  
//      Provides a class to cache metadata information.
//  
// 
// @owner  [....]
//--------------------------------------------------------------------- 

namespace System.Data.Services.Caching
{
    using System; 
    using System.Collections.Generic;
    using System.Data.Services.Common; 
    using System.Data.Services.Providers; 
    using System.Diagnostics;
 
    /// Use this class to cache metadata for providers.
    internal class MetadataCacheItem
    {
        #region Private fields. 

        ///  list of top level entity sets 
        private readonly Dictionary entitySets; 

        /// Collection of service operations, keyed by name. 
        private readonly Dictionary serviceOperations;

        /// Target type for the data provider.
        private readonly Type type; 

        /// Cache of resource properties per type. 
        private readonly Dictionary typeCache; 

        /// Cache of immediate derived types per type. 
        private readonly Dictionary> childTypesCache;

        /// Service configuration information.
        private DataServiceConfiguration configuration; 

        /// Whether all EPM properties serialize in an Astoria V1-compatible way. 
        private bool epmIsV1Compatible; 

        ///  
        /// Keep track of the calculated visibility of resource types.
        /// 
        private Dictionary visibleTypeCache;
 
        /// 
        /// Maps resource set names to ResourceSetWrappers. 
        ///  
        private Dictionary resourceSetWrapperCache;
 
        /// 
        /// Maps service operation names to ServiceOperationWrappers.
        /// 
        private Dictionary serviceOperationWrapperCache; 

        ///  
        /// Maps names to ResourceAssociationSets. 
        /// 
        private Dictionary resourceAssociationSetCache; 

        /// 
        /// Mapes "resourceSetName_resourceTypeName" to the list of visible properties from the set.
        ///  
        private Dictionary> resourcePropertyCache;
 
        ///  
        /// Mapes "resourceSetName_resourceTypeName" to boolean of whether resourceType is allowed for resourceSet
        ///  
        private Dictionary entityTypeDisallowedForSet;

        #endregion Private fields.
 
        /// Initializes a new  instance.
        /// Type of data context for which metadata will be generated. 
        internal MetadataCacheItem(Type type) 
        {
            Debug.Assert(type != null, "type != null"); 

            this.serviceOperations = new Dictionary(EqualityComparer.Default);
            this.typeCache = new Dictionary(EqualityComparer.Default);
            this.childTypesCache = new Dictionary>(ReferenceEqualityComparer.Instance); 
            this.entitySets = new Dictionary(EqualityComparer.Default);
            this.epmIsV1Compatible = true; 
 
            this.resourceSetWrapperCache = new Dictionary(EqualityComparer.Default);
            this.serviceOperationWrapperCache = new Dictionary(EqualityComparer.Default); 
            this.visibleTypeCache = new Dictionary(EqualityComparer.Default);
            this.resourceAssociationSetCache = new Dictionary(EqualityComparer.Default);
            this.resourcePropertyCache = new Dictionary>(EqualityComparer.Default);
            this.entityTypeDisallowedForSet = new Dictionary(EqualityComparer.Default); 
            this.type = type;
            this.EdmSchemaVersion = MetadataEdmSchemaVersion.Version1Dot0; 
        } 

        #region Properties. 

        /// Service configuration information.
        internal DataServiceConfiguration Configuration
        { 
            [DebuggerStepThrough]
            get 
            { 
                return this.configuration;
            } 

            set
            {
                Debug.Assert(value != null, "value != null"); 
                Debug.Assert(this.configuration == null, "this.configuration == null -- otherwise it's being set more than once");
                this.configuration = value; 
            } 
        }
 
        /// 
        /// Keep track of the calculated visibility of resource types.
        /// 
        internal Dictionary VisibleTypeCache 
        {
            [DebuggerStepThrough] 
            get { return this.visibleTypeCache; } 
        }
 
        /// 
        /// Maps resource set names to ResourceSetWrappers.
        /// 
        internal Dictionary ResourceSetWrapperCache 
        {
            [DebuggerStepThrough] 
            get { return this.resourceSetWrapperCache; } 
        }
 
        /// 
        /// Maps service operation names to ServiceOperationWrappers.
        /// 
        internal Dictionary ServiceOperationWrapperCache 
        {
            [DebuggerStepThrough] 
            get { return this.serviceOperationWrapperCache; } 
        }
 
        /// 
        /// Maps names to ResourceAssociationSets.
        /// 
        internal Dictionary ResourceAssociationSetCache 
        {
            [DebuggerStepThrough] 
            get { return this.resourceAssociationSetCache; } 
        }
 
        /// 
        /// Mapes "resourceSetName_resourceTypeName" to the list of visible properties from the set.
        /// 
        internal Dictionary> ResourcePropertyCache 
        {
            [DebuggerStepThrough] 
            get { return this.resourcePropertyCache; } 
        }
 
        /// 
        /// Mapes "resourceSetName_resourceTypeName" to boolean of whether resourceType is allowed for resourceSet
        /// 
        internal Dictionary EntityTypeDisallowedForSet 
        {
            [DebuggerStepThrough] 
            get { return this.entityTypeDisallowedForSet; } 
        }
 
        /// Collection of service operations, keyed by name.
        internal Dictionary ServiceOperations
        {
            [DebuggerStepThrough] 
            get { return this.serviceOperations; }
        } 
 
        /// Cache of resource properties per type.
        internal Dictionary TypeCache 
        {
            [DebuggerStepThrough]
            get { return this.typeCache; }
        } 

        /// Cache of immediate derived types per type. 
        internal Dictionary> ChildTypesCache 
        {
            [DebuggerStepThrough] 
            get { return this.childTypesCache; }
        }

        ///  list of top level entity sets 
        internal Dictionary EntitySets
        { 
            [DebuggerStepThrough] 
            get { return this.entitySets; }
        } 

        /// Target type for the data provider.
        internal Type Type
        { 
            [DebuggerStepThrough]
            get { return this.type; } 
        } 

        /// EDM version to which metadata is compatible. 
        /// 
        /// For example, a service operation of type Void is not acceptable 1.0 CSDL,
        /// so it should use 1.1 CSDL instead. Similarly, OpenTypes are supported
        /// in 1.2 and not before. 
        /// 
        internal MetadataEdmSchemaVersion EdmSchemaVersion 
        { 
            get;
            set; 
        }

        /// Whether all EPM properties serialize in an Astoria V1-compatible way.
        ///  
        /// This property is false if any property has KeepInContent set to false.
        ///  
        internal bool EpmIsV1Compatible 
        {
            get { return this.epmIsV1Compatible; } 
            set { this.epmIsV1Compatible = value; }
        }

        #endregion Properties. 
    }
} 

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

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