EntityContainer.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 / Metadata / Edm / EntityContainer.cs / 1305376 / EntityContainer.cs

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

using System; 
using System.Collections.Generic;
using System.Data.Common;
using System.Text;
using System.Diagnostics; 

namespace System.Data.Metadata.Edm 
{ 
    /// 
    /// Class for representing an entity container 
    /// 
    public sealed class EntityContainer : GlobalItem
    {
        #region Constructors 
        /// 
        /// The constructor for constructing the EntityContainer object with the name, namespaceName, and version. 
        ///  
        /// The name of this entity container
        /// dataSpace in which this entity container belongs to 
        /// Thrown if the name argument is null
        /// Thrown if the name argument is empty string
        internal EntityContainer(string name, DataSpace dataSpace)
        { 
            EntityUtil.CheckStringArgument(name, "name");
 
            _name = name; 
            this.DataSpace = dataSpace;
            _baseEntitySets = new ReadOnlyMetadataCollection(new EntitySetBaseCollection(this)); 
            _functionImports = new ReadOnlyMetadataCollection(new MetadataCollection());
        }
        #endregion
 
        #region Fields
        private readonly string _name; 
        private readonly ReadOnlyMetadataCollection _baseEntitySets; 
        private readonly ReadOnlyMetadataCollection _functionImports;
        #endregion 

        #region Properties
        /// 
        /// Returns the kind of the type 
        /// 
        public override BuiltInTypeKind BuiltInTypeKind { get { return BuiltInTypeKind.EntityContainer; } } 
 
        /// 
        /// Gets the identity for this item as a string 
        /// 
        internal override string Identity
        {
            get 
            {
                return this.Name; 
            } 
        }
 
        /// 
        /// Get the name of this EntityContainer object
        /// 
        [MetadataProperty(PrimitiveTypeKind.String, false)] 
        public String Name
        { 
            get 
            {
                return _name; 
            }
        }

        ///  
        /// Gets the collection of entity sets
        ///  
        [MetadataProperty(BuiltInTypeKind.EntitySetBase, true)] 
        public ReadOnlyMetadataCollection BaseEntitySets
        { 
            get
            {
                return _baseEntitySets;
            } 
        }
 
        ///  
        /// Gets the collection of function imports for this entity container
        ///  
        [MetadataProperty(BuiltInTypeKind.EdmFunction, true)]
        public ReadOnlyMetadataCollection FunctionImports
        {
            get 
            {
                return _functionImports; 
            } 
        }
        #endregion 

        #region Methods
        /// 
        /// 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.BaseEntitySets.Source.SetReadOnly();
                this.FunctionImports.Source.SetReadOnly();
            } 
        }
 
        ///  
        /// Get the entity set with the given name
        ///  
        /// name of the entity set to look up for
        /// true if you want to do a case-insensitive lookup
        /// 
        public EntitySet GetEntitySetByName(string name, bool ignoreCase) 
        {
            EntitySet entitySet = (BaseEntitySets.GetValue(name, ignoreCase) as EntitySet); 
            if (null != entitySet) 
            {
                return entitySet; 
            }
            throw EntityUtil.InvalidEntitySetName(name);
        }
 
        /// 
        /// Get the entity set with the given name or return null if not found 
        ///  
        /// name of the entity set to look up for
        /// true if you want to do a case-insensitive lookup 
        /// out parameter that will contain the result
        /// 
        /// if name argument is null
        public bool TryGetEntitySetByName(string name, bool ignoreCase, out EntitySet entitySet) 
        {
            EntityUtil.CheckArgumentNull(name, "name"); 
            EntitySetBase baseEntitySet = null; 
            entitySet = null;
            if (this.BaseEntitySets.TryGetValue(name, ignoreCase, out baseEntitySet)) 
            {
                if (Helper.IsEntitySet(baseEntitySet))
                {
                    entitySet = (EntitySet)baseEntitySet; 
                    return true;
                } 
            } 
            return false;
        } 

        /// 
        /// Get the relationship set with the given name
        ///  
        /// name of the relationship set to look up for
        /// true if you want to do a case-insensitive lookup 
        ///  
        public RelationshipSet GetRelationshipSetByName(string name, bool ignoreCase)
        { 
            RelationshipSet relationshipSet;
            if (!this.TryGetRelationshipSetByName(name, ignoreCase, out relationshipSet))
            {
                throw EntityUtil.InvalidRelationshipSetName(name); 
            }
            return relationshipSet; 
 
        }
 
        /// 
        /// Get the relationship set with the given name
        /// 
        /// name of the relationship set to look up for 
        /// true if you want to do a case-insensitive lookup
        /// out parameter that will have the result 
        ///  
        /// if name argument is null
        public bool TryGetRelationshipSetByName(string name, bool ignoreCase, out RelationshipSet relationshipSet) 
        {
            EntityUtil.CheckArgumentNull(name, "name");
            EntitySetBase baseEntitySet = null;
            relationshipSet = null; 
            if (this.BaseEntitySets.TryGetValue(name, ignoreCase, out baseEntitySet))
            { 
                if (Helper.IsRelationshipSet(baseEntitySet)) 
                {
                    relationshipSet = (RelationshipSet)baseEntitySet; 
                    return true;
                }
            }
            return false; 
        }
 
        ///  
        /// Overriding System.Object.ToString to provide better String representation
        /// for this type. 
        /// 
        public override string ToString()
        {
            return Name; 
        }
 
        internal void AddEntitySetBase(EntitySetBase entitySetBase) 
        {
            _baseEntitySets.Source.Add(entitySetBase); 
        }

        internal void AddFunctionImport(EdmFunction function)
        { 
            Debug.Assert(null != function);
            _functionImports.Source.Add(function); 
        } 
        #endregion
    } 
}

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

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