Esempio n. 1
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        /// <summary>
        /// Generate a navigation property
        /// </summary>
        /// <param name="target">the other end</param>
        /// <param name="referenceProperty">True to emit Reference navigation property</param>
        /// <returns>the generated property</returns>
        private CodeMemberProperty EmitNavigationProperty(RelationshipEndMember target, bool referenceProperty)
        {
            CodeTypeReference typeRef = GetReturnType(target, referenceProperty);

            // raise the PropertyGenerated event
            PropertyGeneratedEventArgs eventArgs = new PropertyGeneratedEventArgs(Item,
                                                                                  null, // no backing field
                                                                                  typeRef);

            this.Generator.RaisePropertyGeneratedEvent(eventArgs);

            // [System.ComponentModel.Browsable(false)]
            // public TargetType TargetName
            // public EntityReference<TargetType> TargetName
            // or
            // public EntityCollection<targetType> TargetNames
            CodeMemberProperty property = new CodeMemberProperty();

            if (referenceProperty)
            {
                AttributeEmitter.AddBrowsableAttribute(property);
                Generator.AttributeEmitter.EmitGeneratedCodeAttribute(property);
            }
            else
            {
                Generator.AttributeEmitter.EmitNavigationPropertyAttributes(Generator, target, property, eventArgs.AdditionalAttributes);

                // Only reference navigation properties are currently currently supported with XML serialization
                // and thus we should use the XmlIgnore and SoapIgnore attributes on other property types.
                AttributeEmitter.AddIgnoreAttributes(property);
            }

            AttributeEmitter.AddDataMemberAttribute(property);

            CommentEmitter.EmitSummaryComments(Item, property.Comments);

            property.Name = Item.Name;
            if (referenceProperty)
            {
                property.Name += "Reference";
                if (IsNameAlreadyAMemberName(Item.DeclaringType, property.Name, Generator.LanguageAppropriateStringComparer))
                {
                    Generator.AddError(Strings.GeneratedNavigationPropertyNameConflict(Item.Name, Item.DeclaringType.Name, property.Name),
                                       ModelBuilderErrorCode.GeneratedNavigationPropertyNameConflict,
                                       EdmSchemaErrorSeverity.Error, Item.DeclaringType.FullName, property.Name);
                }
            }

            if (eventArgs.ReturnType != null && !eventArgs.ReturnType.Equals(typeRef))
            {
                property.Type = eventArgs.ReturnType;
            }
            else
            {
                property.Type = typeRef;
            }

            property.Attributes = MemberAttributes.Final;

            CodeMethodInvokeExpression getMethod = EmitGetMethod(target);
            CodeExpression             getReturnExpression;

            property.Attributes |= AccessibilityFromGettersAndSetters(Item);
            // setup the accessibility of the navigation property setter and getter
            MemberAttributes propertyAccessibility = property.Attributes & MemberAttributes.AccessMask;

            PropertyEmitter.AddGetterSetterFixUp(Generator.FixUps, GetFullyQualifiedPropertyName(property.Name),
                                                 PropertyEmitter.GetGetterAccessibility(Item), propertyAccessibility, true);
            PropertyEmitter.AddGetterSetterFixUp(Generator.FixUps, GetFullyQualifiedPropertyName(property.Name),
                                                 PropertyEmitter.GetSetterAccessibility(Item), propertyAccessibility, false);

            if (target.RelationshipMultiplicity != RelationshipMultiplicity.Many)
            {
                // insert user-supplied Set code here, before the assignment
                //
                List <CodeStatement> additionalSetStatements = eventArgs.AdditionalSetStatements;
                if (additionalSetStatements != null && additionalSetStatements.Count > 0)
                {
                    try
                    {
                        property.SetStatements.AddRange(additionalSetStatements.ToArray());
                    }
                    catch (ArgumentNullException ex)
                    {
                        Generator.AddError(Strings.InvalidSetStatementSuppliedForProperty(Item.Name),
                                           ModelBuilderErrorCode.InvalidSetStatementSuppliedForProperty,
                                           EdmSchemaErrorSeverity.Error,
                                           ex);
                    }
                }

                CodeExpression valueRef = new CodePropertySetValueReferenceExpression();
                if (typeRef != eventArgs.ReturnType)
                {
                    // we need to cast to the actual type
                    valueRef = new CodeCastExpression(typeRef, valueRef);
                }

                if (referenceProperty)
                {
                    // get
                    //     return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<TTargetEntity>("CSpaceQualifiedRelationshipName", "TargetRoleName");
                    getReturnExpression = getMethod;

                    // set
                    // if (value != null)
                    // {
                    //    ((IEntityWithRelationships)this).RelationshipManager.InitializeRelatedReference<TTargetEntity>"CSpaceQualifiedRelationshipName", "TargetRoleName", value);
                    // }

                    CodeMethodReferenceExpression initReferenceMethod = new CodeMethodReferenceExpression();
                    initReferenceMethod.MethodName = "InitializeRelatedReference";

                    initReferenceMethod.TypeArguments.Add(Generator.GetLeastPossibleQualifiedTypeReference(GetEntityType(target)));
                    initReferenceMethod.TargetObject = new CodePropertyReferenceExpression(
                        new CodeCastExpression(TypeReference.IEntityWithRelationshipsTypeBaseClass, ThisRef),
                        "RelationshipManager");

                    // relationships aren't backed by types so we won't map the namespace
                    // or we can't find the relationship again later
                    string cspaceNamespaceNameQualifiedRelationshipName = target.DeclaringType.FullName;

                    property.SetStatements.Add(
                        new CodeConditionStatement(
                            EmitExpressionDoesNotEqualNull(valueRef),
                            new CodeExpressionStatement(
                                new CodeMethodInvokeExpression(
                                    initReferenceMethod, new CodeExpression[] {
                        new CodePrimitiveExpression(cspaceNamespaceNameQualifiedRelationshipName), new CodePrimitiveExpression(target.Name), valueRef
                    }))));
                }
                else
                {
                    CodePropertyReferenceExpression valueProperty = new CodePropertyReferenceExpression(getMethod, ValuePropertyName);

                    // get
                    //     return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<TTargetEntity>("CSpaceQualifiedRelationshipName", "TargetRoleName").Value;
                    getReturnExpression = valueProperty;

                    // set
                    //     ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<TTargetEntity>("CSpaceQualifiedRelationshipName", "TargetRoleName").Value = value;
                    property.SetStatements.Add(
                        new CodeAssignStatement(valueProperty, valueRef));
                }
            }
            else
            {
                // get
                //     return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedCollection<TTargetEntity>("CSpaceQualifiedRelationshipName", "TargetRoleName");
                getReturnExpression = getMethod;

                // set
                // if (value != null)
                // {
                //    ((IEntityWithRelationships)this).RelationshipManager.InitializeRelatedCollection<TTargetEntity>"CSpaceQualifiedRelationshipName", "TargetRoleName", value);
                // }
                CodeExpression valueRef = new CodePropertySetValueReferenceExpression();

                CodeMethodReferenceExpression initCollectionMethod = new CodeMethodReferenceExpression();
                initCollectionMethod.MethodName = "InitializeRelatedCollection";

                initCollectionMethod.TypeArguments.Add(Generator.GetLeastPossibleQualifiedTypeReference(GetEntityType(target)));
                initCollectionMethod.TargetObject = new CodePropertyReferenceExpression(
                    new CodeCastExpression(TypeReference.IEntityWithRelationshipsTypeBaseClass, ThisRef),
                    "RelationshipManager");

                // relationships aren't backed by types so we won't map the namespace
                // or we can't find the relationship again later
                string cspaceNamespaceNameQualifiedRelationshipName = target.DeclaringType.FullName;

                property.SetStatements.Add(
                    new CodeConditionStatement(
                        EmitExpressionDoesNotEqualNull(valueRef),
                        new CodeExpressionStatement(
                            new CodeMethodInvokeExpression(
                                initCollectionMethod, new CodeExpression[] {
                    new CodePrimitiveExpression(cspaceNamespaceNameQualifiedRelationshipName), new CodePrimitiveExpression(target.Name), valueRef
                }))));
            }

            // if additional Get statements were specified by the event subscriber, insert them now
            //
            List <CodeStatement> additionalGetStatements = eventArgs.AdditionalGetStatements;

            if (additionalGetStatements != null && additionalGetStatements.Count > 0)
            {
                try
                {
                    property.GetStatements.AddRange(additionalGetStatements.ToArray());
                }
                catch (ArgumentNullException ex)
                {
                    Generator.AddError(Strings.InvalidGetStatementSuppliedForProperty(Item.Name),
                                       ModelBuilderErrorCode.InvalidGetStatementSuppliedForProperty,
                                       EdmSchemaErrorSeverity.Error,
                                       ex);
                }
            }

            property.GetStatements.Add(new CodeMethodReturnStatement(getReturnExpression));

            return(property);
        }
        /// <summary>
        /// Generate a navigation property
        /// </summary>
        /// <param name="target">the other end</param>
        /// <param name="referenceProperty">True to emit Reference navigation property</param>
        /// <returns>the generated property</returns>
        private CodeMemberProperty EmitNavigationProperty(RelationshipEndMember target)
        {
            CodeTypeReference typeRef = GetReturnType(target);

            // raise the PropertyGenerated event
            PropertyGeneratedEventArgs eventArgs = new PropertyGeneratedEventArgs(Item,
                                                                                  null, // no backing field
                                                                                  typeRef);

            this.Generator.RaisePropertyGeneratedEvent(eventArgs);

            // [System.ComponentModel.Browsable(false)]
            // public TargetType TargetName
            // public EntityReference<TargetType> TargetName
            // or
            // public EntityCollection<targetType> TargetNames
            CodeMemberProperty property = new CodeMemberProperty();

            // Only reference navigation properties are currently currently supported with XML serialization
            // and thus we should use the XmlIgnore and SoapIgnore attributes on other property types.
            AttributeEmitter.AddIgnoreAttributes(property);

            AttributeEmitter.AddBrowsableAttribute(property);

            AttributeEmitter.AddGeneratedCodeAttribute(property);

            CommentEmitter.EmitSummaryComments(Item, property.Comments);

            property.Name = Item.Name;

            if (eventArgs.ReturnType != null && !eventArgs.ReturnType.Equals(typeRef))
            {
                property.Type = eventArgs.ReturnType;
            }
            else
            {
                property.Type = typeRef;
            }

            property.Attributes = MemberAttributes.Final;

            CodeExpression getMethod = EmitGetMethod(target);
            CodeExpression getReturnExpression;

            if (target.RelationshipMultiplicity != RelationshipMultiplicity.Many)
            {
                property.Attributes |= AccessibilityFromGettersAndSetters(Item);

                // insert user-supplied Set code here, before the assignment
                //
                List <CodeStatement> additionalSetStatements = eventArgs.AdditionalSetStatements;
                if (additionalSetStatements != null && additionalSetStatements.Count > 0)
                {
                    try
                    {
                        property.SetStatements.AddRange(additionalSetStatements.ToArray());
                    }
                    catch (ArgumentNullException e)
                    {
                        Generator.AddError(Strings.InvalidSetStatementSuppliedForProperty(Item.Name),
                                           ModelBuilderErrorCode.InvalidSetStatementSuppliedForProperty,
                                           EdmSchemaErrorSeverity.Error,
                                           e);
                    }
                }

                CodeExpression valueRef = new CodePropertySetValueReferenceExpression();
                if (typeRef != eventArgs.ReturnType)
                {
                    // we need to cast to the actual type
                    valueRef = new CodeCastExpression(typeRef, valueRef);
                }


                CodeExpression valueProperty = getMethod;

                // get
                //     return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<TTargetEntity>("CSpaceQualifiedRelationshipName", "TargetRoleName").Value;
                getReturnExpression = valueProperty;

                // set
                //     ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<TTargetEntity>("CSpaceQualifiedRelationshipName", "TargetRoleName").Value = value;
                property.SetStatements.Add(
                    new CodeAssignStatement(valueProperty, valueRef));

                // setup the accessibility of the navigation property setter and getter
                MemberAttributes propertyAccessibility = property.Attributes & MemberAttributes.AccessMask;
                PropertyEmitter.AddGetterSetterFixUp(Generator.FixUps, GetFullyQualifiedPropertyName(property.Name),
                                                     PropertyEmitter.GetGetterAccessibility(Item), propertyAccessibility, true);
                PropertyEmitter.AddGetterSetterFixUp(Generator.FixUps, GetFullyQualifiedPropertyName(property.Name),
                                                     PropertyEmitter.GetSetterAccessibility(Item), propertyAccessibility, false);

                List <CodeStatement> additionalAfterSetStatements = eventArgs.AdditionalAfterSetStatements;
                if (additionalAfterSetStatements != null && additionalAfterSetStatements.Count > 0)
                {
                    try
                    {
                        property.SetStatements.AddRange(additionalAfterSetStatements.ToArray());
                    }
                    catch (ArgumentNullException e)
                    {
                        Generator.AddError(Strings.InvalidSetStatementSuppliedForProperty(Item.Name),
                                           ModelBuilderErrorCode.InvalidSetStatementSuppliedForProperty,
                                           EdmSchemaErrorSeverity.Error,
                                           e);
                    }
                }
            }
            else
            {
                property.Attributes |= PropertyEmitter.GetGetterAccessibility(Item);
                // get
                //     return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedCollection<TTargetEntity>("CSpaceQualifiedRelationshipName", "TargetRoleName");
                getReturnExpression = getMethod;

                // set
                // if (value != null) ==> Only for non-binding scenario
                // {
                //    this =
                //    this.OnPropertyChanged("")
                // }

                CodeExpression valueRef = new CodePropertySetValueReferenceExpression();

                CodeStatementCollection csc = null;

                if (this.Generator.UseDataServiceCollection == true)
                {
                    csc = property.SetStatements;
                }
                else
                {
                    CodeConditionStatement ccs = new CodeConditionStatement(EmitExpressionDoesNotEqualNull(valueRef));
                    property.SetStatements.Add(ccs);

                    csc = ccs.TrueStatements;
                }

                csc.Add(new CodeAssignStatement(getMethod, valueRef));

                if (eventArgs.AdditionalAfterSetStatements != null)
                {
                    try
                    {
                        foreach (CodeStatement s in eventArgs.AdditionalAfterSetStatements)
                        {
                            csc.Add(s);
                        }
                    }
                    catch (ArgumentNullException e)
                    {
                        Generator.AddError(Strings.InvalidSetStatementSuppliedForProperty(Item.Name),
                                           ModelBuilderErrorCode.InvalidSetStatementSuppliedForProperty,
                                           EdmSchemaErrorSeverity.Error,
                                           e);
                    }
                }
            }

            // if additional Get statements were specified by the event subscriber, insert them now
            //
            List <CodeStatement> additionalGetStatements = eventArgs.AdditionalGetStatements;

            if (additionalGetStatements != null && additionalGetStatements.Count > 0)
            {
                try
                {
                    property.GetStatements.AddRange(additionalGetStatements.ToArray());
                }
                catch (ArgumentNullException ex)
                {
                    Generator.AddError(Strings.InvalidGetStatementSuppliedForProperty(Item.Name),
                                       ModelBuilderErrorCode.InvalidGetStatementSuppliedForProperty,
                                       EdmSchemaErrorSeverity.Error,
                                       ex);
                }
            }

            property.GetStatements.Add(new CodeMethodReturnStatement(getReturnExpression));

            return(property);
        }