/// <summary>
/// Helper method that raises the PropertyGenerated event
/// </summary>
/// <param name="eventArgs">The event arguments passed to the subscriber</param>
internal void RaisePropertyGeneratedEvent(PropertyGeneratedEventArgs eventArgs)
{
if (this.OnPropertyGenerated != null)
{
this.OnPropertyGenerated(this, eventArgs);
}
}
/// <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;
}
private CodeMemberProperty CreateEntitySetProperty(EntitySet set)
{
Debug.Assert(set != null, "Property is Null");
// trying to get
//
// [System.ComponentModel.Browsable(false)]
// public ObjectQuery<Customer> Customers
// {
// get
// {
// if ((this._Customers == null))
// {
// this._Customers = base.CreateQuery<Customer>("[Customers]");
// }
// return this._Customers;
// }
// }
CodeMemberProperty codeProperty = new CodeMemberProperty();
codeProperty.Attributes = MemberAttributes.Final | GetEntitySetPropertyAccessibility(set);
codeProperty.Name = set.Name;
codeProperty.HasGet = true;
codeProperty.HasSet = false;
// SQLBUDT 598300: property to get query hides a property on base Context?
if (null != TypeReference.ObjectContextBaseClassType.GetProperty(set.Name))
{
codeProperty.Attributes |= MemberAttributes.New;
}
AttributeEmitter.AddBrowsableAttribute(codeProperty);
AttributeEmitter.AddGeneratedCodeAttribute(codeProperty);
CodeTypeReference genericParameter = Generator.GetLeastPossibleQualifiedTypeReference(set.ElementType);
codeProperty.Type = TypeReference.AdoFrameworkGenericClass("DataServiceQuery", genericParameter);
string fieldName = Utils.FieldNameFromPropName(set.Name);
// raise the PropertyGenerated event before proceeding further
PropertyGeneratedEventArgs eventArgs = new PropertyGeneratedEventArgs(set, fieldName, codeProperty.Type);
Generator.RaisePropertyGeneratedEvent(eventArgs);
if (eventArgs.ReturnType == null || !eventArgs.ReturnType.Equals(codeProperty.Type))
{
throw EDesignUtil.InvalidOperation(Strings.CannotChangePropertyReturnType(set.Name, Item.Name));
}
List<CodeAttributeDeclaration> additionalAttributes = eventArgs.AdditionalAttributes;
if (additionalAttributes != null && additionalAttributes.Count > 0)
{
try
{
codeProperty.CustomAttributes.AddRange(additionalAttributes.ToArray());
}
catch (ArgumentNullException e)
{
Generator.AddError(Strings.InvalidAttributeSuppliedForProperty(Item.Name),
ModelBuilderErrorCode.InvalidAttributeSuppliedForProperty,
EdmSchemaErrorSeverity.Error,
e);
}
}
// we need to insert user-specified code before other/existing code, including
// the return statement
List<CodeStatement> additionalGetStatements = eventArgs.AdditionalGetStatements;
if (additionalGetStatements != null && additionalGetStatements.Count > 0)
{
try
{
codeProperty.GetStatements.AddRange(additionalGetStatements.ToArray());
}
catch (ArgumentNullException e)
{
Generator.AddError(Strings.InvalidGetStatementSuppliedForProperty(Item.Name),
ModelBuilderErrorCode.InvalidGetStatementSuppliedForProperty,
EdmSchemaErrorSeverity.Error,
e);
}
}
codeProperty.GetStatements.Add(
new CodeConditionStatement(
EmitExpressionEqualsNull(new CodeFieldReferenceExpression(ThisRef, fieldName)),
new CodeAssignStatement(
new CodeFieldReferenceExpression(ThisRef, fieldName),
new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(
new CodeBaseReferenceExpression(),
"CreateQuery",
new CodeTypeReference[] { genericParameter }
),
new CodePrimitiveExpression(set.Name)
)
)
)
);
codeProperty.GetStatements.Add(
new CodeMethodReturnStatement(
new CodeFieldReferenceExpression(
ThisRef,
fieldName
)
)
);
// property summary
CommentEmitter.EmitSummaryComments(set, codeProperty.Comments);
return codeProperty;
}