ResourceContainer.cs source code in C# .NET

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Code:

/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataWeb / Server / System / Data / Services / Providers / ResourceContainer.cs / 2 / ResourceContainer.cs

                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//  
//      Contains information about a resource container.
//  
// 
// @owner  [....]
//--------------------------------------------------------------------- 

namespace System.Data.Services.Providers
{
    using System; 
    using System.Collections.Generic;
    using System.Diagnostics; 
    using System.Reflection; 

    ///  
    /// Structure to keep information about a resource container
    /// 
    [DebuggerDisplay("{Name}: {ElementType}")]
    internal class ResourceContainer 
    {
        ///  Reference to resource type that this resource container is a collection of 
        private readonly ResourceType elementType; 

        /// Name of the resource container. 
        private readonly string name;

        /// List of entity types which are disallowed since they have navigation properties.
        private readonly HashSet disallowedDerivedTypes; 

#if ASTORIA_CONTAINMENT 
 
        /// 
        /// If this container has a canonical access path, this is the parent 
        /// container.
        /// 
        private ResourceContainer containmentCanonicalParent;
 
        /// 
        /// If this container has a canonical access path, this is the parent 
        /// container's containing property. 
        /// 
        private ResourceProperty containmentCanonicalProperty; 

#endif

        /// Methods to be called when composing read queries to allow authorization. 
        private MethodInfo[] readAuthorizationMethods;
 
        /// Cached delegate to read an IQueryable from the context. 
        private Func readFromContextDelegate;
 
        /// Access rights to this resource container.
        private EntitySetRights rights;

#if ASTORIA_CONTAINMENT 

        /// Whether top-level access is available for this resource set. 
        private bool topLevelAccess; 

#endif 

        /// Methods to be called when validating write methods to allow authorization.
        private MethodInfo[] writeAuthorizationMethods;
 
        /// 
        /// Constructs a new instance of Astoria type using the specified clr type 
        ///  
        /// name of the resource container
        /// Reference to clr type that this resource container is a collection of 
        internal ResourceContainer(string name, ResourceType elementType)
        {
            Debug.Assert(!String.IsNullOrEmpty(name), "name of entity set can never be null or empty");
            Debug.Assert(elementType != null, "elementType of an entity set can never be null"); 

            this.name = name; 
            this.elementType = elementType; 
            this.disallowedDerivedTypes = new HashSet(EqualityComparer.Default);
        } 

#if ASTORIA_CONTAINMENT

        ///  
        /// If this container has a canonical access path, this is the parent
        /// container. 
        ///  
        internal ResourceContainer ContainmentCanonicalParent
        { 
            [DebuggerStepThrough]
            get { return this.containmentCanonicalParent; }
        }
 
        /// 
        /// If this container has a canonical access path, this is the parent 
        /// container's containing property. 
        /// 
        internal ResourceProperty ContainmentCanonicalProperty 
        {
            [DebuggerStepThrough]
            get { return this.containmentCanonicalProperty; }
        } 

#endif 
 
        ///  Reference to clr type that this resource container is a collection of 
        internal Type ElementType 
        {
            get
            {
                return this.elementType.Type; 
            }
        } 
 
        /// Cached delegate to read an IQueryable from the context.
        internal Func ReadFromContextDelegate 
        {
            get { return this.readFromContextDelegate; }
            set { this.readFromContextDelegate = value; }
        } 

        ///  Reference to resource type that this resource container is a collection of  
        internal ResourceType ResourceType 
        {
            get 
            {
                return this.elementType;
            }
        } 

        /// Whether the resource container is visible to service consumers. 
        internal bool IsHidden 
        {
            get { return this.rights == EntitySetRights.None; } 
        }

        /// Name of the resource container.
        internal string Name 
        {
            get 
            { 
                return this.name;
            } 
        }

        /// Access rights to this resource container.
        internal EntitySetRights Rights 
        {
            get { return this.rights; } 
            set { this.rights = value; } 
        }
 
        /// Methods to be called when composing read queries to allow authorization (possibly null).
        internal MethodInfo[] ReadAuthorizationMethods
        {
            [DebuggerStepThrough] 
            get { return this.readAuthorizationMethods; }
        } 
 
#if ASTORIA_CONTAINMENT
 
        /// Whether top-level access is available for this resource set.
        internal bool TopLevelAccess
        {
            [DebuggerStepThrough] 
            get { return this.topLevelAccess; }
        } 
 
#endif
 
        /// Methods to be called when validating write methods to allow authorization (possibly null).
        internal MethodInfo[] WriteAuthorizationMethods
        {
            [DebuggerStepThrough] 
            get { return this.writeAuthorizationMethods; }
        } 
 
        /// 
        /// Adds the specified  to the list of read 
        /// authorization methods for this resource container.
        /// 
        /// Method to add.
        internal void AddReadAuthorizationMethod(MethodInfo method) 
        {
            Debug.Assert(method != null, "method != null"); 
            AppendMethod(method, ref this.readAuthorizationMethods); 
        }
 
        /// 
        /// Adds the specified  to the list of write
        /// authorization methods for this resource container.
        ///  
        /// Method to add.
        internal void AddWriteAuthorizationMethod(MethodInfo method) 
        { 
            Debug.Assert(method != null, "method != null");
            AppendMethod(method, ref this.writeAuthorizationMethods); 
        }

#if ASTORIA_CONTAINMENT
 
        /// 
        /// Sets all properties for the canonical path in a containment relationship. 
        ///  
        /// Resource set that contains the canonical path.
        /// Property in  that contains the canonical path. 
        /// Whether top-level access is available.
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Maintainability", "CA1500:VariableNamesShouldNotMatchFieldNames", MessageId = "topLevelAccess", Justification = "1:1 mapping")]
        internal void SetupCanonicalAccessPath(ResourceContainer container, ResourceProperty property, bool topLevelAccess)
        { 
            Debug.Assert(container != null, "container != null");
            Debug.Assert(property != null, "property != null"); 
            Debug.Assert( 
                this.containmentCanonicalParent == null,
                "this.containmentCanonicalParent == null -- otherwise, more than one canonical path is being set."); 

            this.containmentCanonicalParent = container;
            this.containmentCanonicalProperty = property;
            this.topLevelAccess = topLevelAccess; 
        }
 
#endif 

        ///  
        /// Add the given resource type to the disallowed list, so that we can check during serialization
        /// 
        /// resource type that is disallowed for the given entity set.
        internal void AddDisallowedDerivedType(ResourceType resourceType) 
        {
            Debug.Assert(resourceType != null, "resourceType != null"); 
            Debug.Assert(resourceType.ResourceTypeKind == ResourceTypeKind.EntityType, "expecting entity types"); 
            Debug.Assert(resourceType.Type.IsSubclassOf(this.ResourceType.Type), "the type must be a derived type for the given entity set");
 
            this.disallowedDerivedTypes.Add(resourceType);
        }

        ///  
        /// Checks whether the given resource type is not allowed for this entity set or not.
        ///  
        /// resourceType which needs to be checked 
        /// returns true if the given resource type is not allowed for this entity set. Otherwise returns false.
        internal bool IsEntityDisallowed(ResourceType resourceType) 
        {
            return this.disallowedDerivedTypes.Contains(resourceType);
        }
 
        /// Appends a method to the specified array.
        /// Method to append. 
        /// Array to append to. 
        private static void AppendMethod(MethodInfo method, ref MethodInfo[] methods)
        { 
            if (methods == null)
            {
                methods = new MethodInfo[1];
            } 
            else
            { 
                MethodInfo[] newArray = new MethodInfo[methods.Length + 1]; 
                Array.Copy(methods, newArray, methods.Length);
                methods = newArray; 
            }

            methods[methods.Length - 1] = method;
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//  
//      Contains information about a resource container.
//  
// 
// @owner  [....]
//--------------------------------------------------------------------- 

namespace System.Data.Services.Providers
{
    using System; 
    using System.Collections.Generic;
    using System.Diagnostics; 
    using System.Reflection; 

    ///  
    /// Structure to keep information about a resource container
    /// 
    [DebuggerDisplay("{Name}: {ElementType}")]
    internal class ResourceContainer 
    {
        ///  Reference to resource type that this resource container is a collection of 
        private readonly ResourceType elementType; 

        /// Name of the resource container. 
        private readonly string name;

        /// List of entity types which are disallowed since they have navigation properties.
        private readonly HashSet disallowedDerivedTypes; 

#if ASTORIA_CONTAINMENT 
 
        /// 
        /// If this container has a canonical access path, this is the parent 
        /// container.
        /// 
        private ResourceContainer containmentCanonicalParent;
 
        /// 
        /// If this container has a canonical access path, this is the parent 
        /// container's containing property. 
        /// 
        private ResourceProperty containmentCanonicalProperty; 

#endif

        /// Methods to be called when composing read queries to allow authorization. 
        private MethodInfo[] readAuthorizationMethods;
 
        /// Cached delegate to read an IQueryable from the context. 
        private Func readFromContextDelegate;
 
        /// Access rights to this resource container.
        private EntitySetRights rights;

#if ASTORIA_CONTAINMENT 

        /// Whether top-level access is available for this resource set. 
        private bool topLevelAccess; 

#endif 

        /// Methods to be called when validating write methods to allow authorization.
        private MethodInfo[] writeAuthorizationMethods;
 
        /// 
        /// Constructs a new instance of Astoria type using the specified clr type 
        ///  
        /// name of the resource container
        /// Reference to clr type that this resource container is a collection of 
        internal ResourceContainer(string name, ResourceType elementType)
        {
            Debug.Assert(!String.IsNullOrEmpty(name), "name of entity set can never be null or empty");
            Debug.Assert(elementType != null, "elementType of an entity set can never be null"); 

            this.name = name; 
            this.elementType = elementType; 
            this.disallowedDerivedTypes = new HashSet(EqualityComparer.Default);
        } 

#if ASTORIA_CONTAINMENT

        ///  
        /// If this container has a canonical access path, this is the parent
        /// container. 
        ///  
        internal ResourceContainer ContainmentCanonicalParent
        { 
            [DebuggerStepThrough]
            get { return this.containmentCanonicalParent; }
        }
 
        /// 
        /// If this container has a canonical access path, this is the parent 
        /// container's containing property. 
        /// 
        internal ResourceProperty ContainmentCanonicalProperty 
        {
            [DebuggerStepThrough]
            get { return this.containmentCanonicalProperty; }
        } 

#endif 
 
        ///  Reference to clr type that this resource container is a collection of 
        internal Type ElementType 
        {
            get
            {
                return this.elementType.Type; 
            }
        } 
 
        /// Cached delegate to read an IQueryable from the context.
        internal Func ReadFromContextDelegate 
        {
            get { return this.readFromContextDelegate; }
            set { this.readFromContextDelegate = value; }
        } 

        ///  Reference to resource type that this resource container is a collection of  
        internal ResourceType ResourceType 
        {
            get 
            {
                return this.elementType;
            }
        } 

        /// Whether the resource container is visible to service consumers. 
        internal bool IsHidden 
        {
            get { return this.rights == EntitySetRights.None; } 
        }

        /// Name of the resource container.
        internal string Name 
        {
            get 
            { 
                return this.name;
            } 
        }

        /// Access rights to this resource container.
        internal EntitySetRights Rights 
        {
            get { return this.rights; } 
            set { this.rights = value; } 
        }
 
        /// Methods to be called when composing read queries to allow authorization (possibly null).
        internal MethodInfo[] ReadAuthorizationMethods
        {
            [DebuggerStepThrough] 
            get { return this.readAuthorizationMethods; }
        } 
 
#if ASTORIA_CONTAINMENT
 
        /// Whether top-level access is available for this resource set.
        internal bool TopLevelAccess
        {
            [DebuggerStepThrough] 
            get { return this.topLevelAccess; }
        } 
 
#endif
 
        /// Methods to be called when validating write methods to allow authorization (possibly null).
        internal MethodInfo[] WriteAuthorizationMethods
        {
            [DebuggerStepThrough] 
            get { return this.writeAuthorizationMethods; }
        } 
 
        /// 
        /// Adds the specified  to the list of read 
        /// authorization methods for this resource container.
        /// 
        /// Method to add.
        internal void AddReadAuthorizationMethod(MethodInfo method) 
        {
            Debug.Assert(method != null, "method != null"); 
            AppendMethod(method, ref this.readAuthorizationMethods); 
        }
 
        /// 
        /// Adds the specified  to the list of write
        /// authorization methods for this resource container.
        ///  
        /// Method to add.
        internal void AddWriteAuthorizationMethod(MethodInfo method) 
        { 
            Debug.Assert(method != null, "method != null");
            AppendMethod(method, ref this.writeAuthorizationMethods); 
        }

#if ASTORIA_CONTAINMENT
 
        /// 
        /// Sets all properties for the canonical path in a containment relationship. 
        ///  
        /// Resource set that contains the canonical path.
        /// Property in  that contains the canonical path. 
        /// Whether top-level access is available.
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Maintainability", "CA1500:VariableNamesShouldNotMatchFieldNames", MessageId = "topLevelAccess", Justification = "1:1 mapping")]
        internal void SetupCanonicalAccessPath(ResourceContainer container, ResourceProperty property, bool topLevelAccess)
        { 
            Debug.Assert(container != null, "container != null");
            Debug.Assert(property != null, "property != null"); 
            Debug.Assert( 
                this.containmentCanonicalParent == null,
                "this.containmentCanonicalParent == null -- otherwise, more than one canonical path is being set."); 

            this.containmentCanonicalParent = container;
            this.containmentCanonicalProperty = property;
            this.topLevelAccess = topLevelAccess; 
        }
 
#endif 

        ///  
        /// Add the given resource type to the disallowed list, so that we can check during serialization
        /// 
        /// resource type that is disallowed for the given entity set.
        internal void AddDisallowedDerivedType(ResourceType resourceType) 
        {
            Debug.Assert(resourceType != null, "resourceType != null"); 
            Debug.Assert(resourceType.ResourceTypeKind == ResourceTypeKind.EntityType, "expecting entity types"); 
            Debug.Assert(resourceType.Type.IsSubclassOf(this.ResourceType.Type), "the type must be a derived type for the given entity set");
 
            this.disallowedDerivedTypes.Add(resourceType);
        }

        ///  
        /// Checks whether the given resource type is not allowed for this entity set or not.
        ///  
        /// resourceType which needs to be checked 
        /// returns true if the given resource type is not allowed for this entity set. Otherwise returns false.
        internal bool IsEntityDisallowed(ResourceType resourceType) 
        {
            return this.disallowedDerivedTypes.Contains(resourceType);
        }
 
        /// Appends a method to the specified array.
        /// Method to append. 
        /// Array to append to. 
        private static void AppendMethod(MethodInfo method, ref MethodInfo[] methods)
        { 
            if (methods == null)
            {
                methods = new MethodInfo[1];
            } 
            else
            { 
                MethodInfo[] newArray = new MethodInfo[methods.Length + 1]; 
                Array.Copy(methods, newArray, methods.Length);
                methods = newArray; 
            }

            methods[methods.Length - 1] = method;
        } 
    }
} 

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

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