AssociationTypeEmitter.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntityDesign / Design / System / Data / EntityModel / Emitters / AssociationTypeEmitter.cs / 1305376 / AssociationTypeEmitter.cs
                        
                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

using System; 
using System.CodeDom;
using System.Data;
using System.Data.Metadata.Edm;
using System.Data.EntityModel.SchemaObjectModel; 
using System.Diagnostics;
 
 
namespace System.Data.EntityModel.Emitters
{ 
    /// 
    /// Summary description for NestedTypeEmitter.
    /// 
    internal sealed class AssociationTypeEmitter : SchemaTypeEmitter 
    {
        public AssociationTypeEmitter(ClientApiGenerator generator, AssociationType associationType) 
            : base(generator, associationType) 
        {
        } 


        public override CodeTypeDeclarationCollection EmitApiClass()
        { 
            Debug.Assert(Item.AssociationEndMembers.Count == 2, "must have exactly two ends");
 
            AssociationEndMember end1 = Item.AssociationEndMembers[0]; 
            AssociationEndMember end2 = Item.AssociationEndMembers[1];
 
            Generator.CompileUnit.AssemblyCustomAttributes.Add(
                AttributeEmitter.EmitSimpleAttribute(
                Utils.FQAdoFrameworkDataClassesName("EdmRelationshipAttribute"),
                Item.NamespaceName,  //it is ok to use the c namespace because relationships aren't backed by clr objects 
                Item.Name,
                end1.Name, 
                GetMultiplicityCodeExpression(end1.RelationshipMultiplicity), 
                GetEndTypeCodeExpression(end1),
                end2.Name, 
                GetMultiplicityCodeExpression(end2.RelationshipMultiplicity),
                GetEndTypeCodeExpression(end2)
                ));
 
            // this method doesn't actually create a new type, just a new assembly level attribute for each end
            return new CodeTypeDeclarationCollection(); 
        } 

        private CodeTypeOfExpression GetEndTypeCodeExpression(AssociationEndMember end) 
        {
            return new CodeTypeOfExpression(Generator.GetFullyQualifiedTypeReference(((RefType)end.TypeUsage.EdmType).ElementType));
        }
 
        private CodeExpression GetMultiplicityCodeExpression(RelationshipMultiplicity multiplicity)
        { 
            // example: 
            // [System.Data.Objects.DataClasses.EdmRelationshipRoleAttribute("CustomerOrder", "Customer", global::System.Data.Metadata.Edm.RelationshipMultiplicity.One, typeof(Customer))]
            string roleMultiplicity = multiplicity.ToString(); 
            CodeExpression roleMultiplicityExpression = Emitter.EmitEnumMemberExpression(
                TypeReference.AdoFrameworkMetadataEdmType("RelationshipMultiplicity"), roleMultiplicity);
            return roleMultiplicityExpression;
        } 

        internal new AssociationType Item 
        { 
            get
            { 
                return base.Item as AssociationType;
            }
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

using System; 
using System.CodeDom;
using System.Data;
using System.Data.Metadata.Edm;
using System.Data.EntityModel.SchemaObjectModel; 
using System.Diagnostics;
 
 
namespace System.Data.EntityModel.Emitters
{ 
    /// 
    /// Summary description for NestedTypeEmitter.
    /// 
    internal sealed class AssociationTypeEmitter : SchemaTypeEmitter 
    {
        public AssociationTypeEmitter(ClientApiGenerator generator, AssociationType associationType) 
            : base(generator, associationType) 
        {
        } 


        public override CodeTypeDeclarationCollection EmitApiClass()
        { 
            Debug.Assert(Item.AssociationEndMembers.Count == 2, "must have exactly two ends");
 
            AssociationEndMember end1 = Item.AssociationEndMembers[0]; 
            AssociationEndMember end2 = Item.AssociationEndMembers[1];
 
            Generator.CompileUnit.AssemblyCustomAttributes.Add(
                AttributeEmitter.EmitSimpleAttribute(
                Utils.FQAdoFrameworkDataClassesName("EdmRelationshipAttribute"),
                Item.NamespaceName,  //it is ok to use the c namespace because relationships aren't backed by clr objects 
                Item.Name,
                end1.Name, 
                GetMultiplicityCodeExpression(end1.RelationshipMultiplicity), 
                GetEndTypeCodeExpression(end1),
                end2.Name, 
                GetMultiplicityCodeExpression(end2.RelationshipMultiplicity),
                GetEndTypeCodeExpression(end2)
                ));
 
            // this method doesn't actually create a new type, just a new assembly level attribute for each end
            return new CodeTypeDeclarationCollection(); 
        } 

        private CodeTypeOfExpression GetEndTypeCodeExpression(AssociationEndMember end) 
        {
            return new CodeTypeOfExpression(Generator.GetFullyQualifiedTypeReference(((RefType)end.TypeUsage.EdmType).ElementType));
        }
 
        private CodeExpression GetMultiplicityCodeExpression(RelationshipMultiplicity multiplicity)
        { 
            // example: 
            // [System.Data.Objects.DataClasses.EdmRelationshipRoleAttribute("CustomerOrder", "Customer", global::System.Data.Metadata.Edm.RelationshipMultiplicity.One, typeof(Customer))]
            string roleMultiplicity = multiplicity.ToString(); 
            CodeExpression roleMultiplicityExpression = Emitter.EmitEnumMemberExpression(
                TypeReference.AdoFrameworkMetadataEdmType("RelationshipMultiplicity"), roleMultiplicity);
            return roleMultiplicityExpression;
        } 

        internal new AssociationType Item 
        { 
            get
            { 
                return base.Item as AssociationType;
            }
        }
    } 
}

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

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