AssociationType.cs source code in C# .NET

                        Code:
                         / Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataEntity / System / Data / Metadata / Edm / AssociationType.cs / 3 / AssociationType.cs
                        
                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner  [....], [....]
//--------------------------------------------------------------------- 
using System; 
using System.Collections.Generic;
using System.Data.Common; 
using System.Text;
using System.Threading;
using System.Diagnostics;
 
namespace System.Data.Metadata.Edm
{ 
    ///  
    /// Represents the Edm Association Type
    ///  
    public sealed class AssociationType : RelationshipType
    {
        #region Constructors
        ///  
        /// Initializes a new instance of Association Type with the given name, namespace, version and ends
        ///  
        /// name of the association type 
        /// namespace of the association type
        /// version of the association type 
        /// dataSpace in which this AssociationType belongs to
        /// Thrown if either the name, namespace or version attributes are null
        internal AssociationType(string name,
                                 string namespaceName, 
                                 DataSpace dataSpace)
            : base(name, namespaceName, dataSpace) 
        { 
            _referentialConstraints = new ReadOnlyMetadataCollection(new MetadataCollection());
        } 
        #endregion

        #region Fields
        private readonly ReadOnlyMetadataCollection _referentialConstraints; 
        private FilteredReadOnlyMetadataCollection _associationEndMembers;
        #endregion 
 
        #region Properties
        ///  
        /// Returns the kind of the type
        /// 
        public override BuiltInTypeKind BuiltInTypeKind { get { return BuiltInTypeKind.AssociationType; } }
 
        /// 
        /// Returns the list of ends for this association type 
        ///  
        public ReadOnlyMetadataCollection AssociationEndMembers
        { 
            get
            {
                Debug.Assert(IsReadOnly, "this is a wrapper around this.Members, don't call it during metadata loading, only call it after the metadata is set to readonly");
                if (null == _associationEndMembers) 
                {
                    Interlocked.CompareExchange(ref _associationEndMembers, 
                        new FilteredReadOnlyMetadataCollection( 
                            this.Members, Helper.IsAssociationEndMember), null);
                } 
                return _associationEndMembers;
            }
        }
 
        /// 
        /// Returns the list of constraints for this association type 
        ///  
        [MetadataProperty(BuiltInTypeKind.ReferentialConstraint, true)]
        public ReadOnlyMetadataCollection ReferentialConstraints 
        {
            get
            {
                return _referentialConstraints; 
            }
        } 
        #endregion 

        #region Methods 

        /// 
        /// Validates a EdmMember object to determine if it can be added to this type's
        /// Members collection. If this method returns without throwing, it is assumed 
        /// the member is valid.
        ///  
        /// The member to validate 
        /// Thrown if the member is not an AssociationEndMember
        internal override void ValidateMemberForAdd(EdmMember member) 
        {
            if (!(member is AssociationEndMember))
            {
                throw EntityUtil.AssociationInvalidMembers(); 
            }
        } 
 
        /// 
        /// Sets this item to be readonly, once this is set, the item will never be writable again. 
        /// 
        internal override void SetReadOnly()
        {
            if (!IsReadOnly) 
            {
                base.SetReadOnly(); 
                this.ReferentialConstraints.Source.SetReadOnly(); 
            }
        } 

        /// 
        /// Add the given referential constraint to the collection of referential constraints
        ///  
        /// 
        internal void AddReferentialConstraint(ReferentialConstraint referentialConstraint) 
        { 
            this.ReferentialConstraints.Source.Add(referentialConstraint);
        } 
        #endregion
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner  [....], [....]
//--------------------------------------------------------------------- 
using System; 
using System.Collections.Generic;
using System.Data.Common; 
using System.Text;
using System.Threading;
using System.Diagnostics;
 
namespace System.Data.Metadata.Edm
{ 
    ///  
    /// Represents the Edm Association Type
    ///  
    public sealed class AssociationType : RelationshipType
    {
        #region Constructors
        ///  
        /// Initializes a new instance of Association Type with the given name, namespace, version and ends
        ///  
        /// name of the association type 
        /// namespace of the association type
        /// version of the association type 
        /// dataSpace in which this AssociationType belongs to
        /// Thrown if either the name, namespace or version attributes are null
        internal AssociationType(string name,
                                 string namespaceName, 
                                 DataSpace dataSpace)
            : base(name, namespaceName, dataSpace) 
        { 
            _referentialConstraints = new ReadOnlyMetadataCollection(new MetadataCollection());
        } 
        #endregion

        #region Fields
        private readonly ReadOnlyMetadataCollection _referentialConstraints; 
        private FilteredReadOnlyMetadataCollection _associationEndMembers;
        #endregion 
 
        #region Properties
        ///  
        /// Returns the kind of the type
        /// 
        public override BuiltInTypeKind BuiltInTypeKind { get { return BuiltInTypeKind.AssociationType; } }
 
        /// 
        /// Returns the list of ends for this association type 
        ///  
        public ReadOnlyMetadataCollection AssociationEndMembers
        { 
            get
            {
                Debug.Assert(IsReadOnly, "this is a wrapper around this.Members, don't call it during metadata loading, only call it after the metadata is set to readonly");
                if (null == _associationEndMembers) 
                {
                    Interlocked.CompareExchange(ref _associationEndMembers, 
                        new FilteredReadOnlyMetadataCollection( 
                            this.Members, Helper.IsAssociationEndMember), null);
                } 
                return _associationEndMembers;
            }
        }
 
        /// 
        /// Returns the list of constraints for this association type 
        ///  
        [MetadataProperty(BuiltInTypeKind.ReferentialConstraint, true)]
        public ReadOnlyMetadataCollection ReferentialConstraints 
        {
            get
            {
                return _referentialConstraints; 
            }
        } 
        #endregion 

        #region Methods 

        /// 
        /// Validates a EdmMember object to determine if it can be added to this type's
        /// Members collection. If this method returns without throwing, it is assumed 
        /// the member is valid.
        ///  
        /// The member to validate 
        /// Thrown if the member is not an AssociationEndMember
        internal override void ValidateMemberForAdd(EdmMember member) 
        {
            if (!(member is AssociationEndMember))
            {
                throw EntityUtil.AssociationInvalidMembers(); 
            }
        } 
 
        /// 
        /// Sets this item to be readonly, once this is set, the item will never be writable again. 
        /// 
        internal override void SetReadOnly()
        {
            if (!IsReadOnly) 
            {
                base.SetReadOnly(); 
                this.ReferentialConstraints.Source.SetReadOnly(); 
            }
        } 

        /// 
        /// Add the given referential constraint to the collection of referential constraints
        ///  
        /// 
        internal void AddReferentialConstraint(ReferentialConstraint referentialConstraint) 
        { 
            this.ReferentialConstraints.Source.Add(referentialConstraint);
        } 
        #endregion
    }
}

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

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