private CodeMemberField CreateEntitySetField(EntitySet set)
{
Debug.Assert(set != null, "Field is Null");
// trying to get
//
// For Version < 2:
//
// private ObjectQuery<SpanTestsModel.Customer> _Customers = null;
//
// For Version >= 2:
//
// private ObjectSet<SpanTestsModel.Customer> _Customers = null;
CodeMemberField codeField = new CodeMemberField();
Generator.AttributeEmitter.EmitGeneratedCodeAttribute(codeField);
codeField.Attributes = MemberAttributes.Final | MemberAttributes.Private;
codeField.Name = Utils.FieldNameFromPropName(set.Name);
CodeTypeReference genericParameter = Generator.GetLeastPossibleQualifiedTypeReference(set.ElementType);
codeField.Type = TypeReference.AdoFrameworkGenericClass("ObjectQuery", genericParameter);
return(codeField);
}
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();
Generator.AttributeEmitter.EmitGeneratedCodeAttribute(codeProperty);
codeProperty.Attributes = MemberAttributes.Final | GetEntitySetPropertyAccessibility(set);
codeProperty.Name = set.Name;
codeProperty.HasGet = true;
codeProperty.HasSet = false;
// Determine type to use for field/property and name of factory method on ObjectContext
string typeName = "ObjectQuery";
string createMethodName = "CreateQuery";
// When the EntitySet name is used as CommandText, it should be quoted
string createMethodArgument = "[" + set.Name + "]";
CodeTypeReference genericParameter = Generator.GetLeastPossibleQualifiedTypeReference(set.ElementType);
codeProperty.Type = TypeReference.AdoFrameworkGenericClass(typeName, 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(),
createMethodName,
new CodeTypeReference[] { genericParameter }
),
new CodePrimitiveExpression(createMethodArgument)
)
)
)
);
codeProperty.GetStatements.Add(
new CodeMethodReturnStatement(
new CodeFieldReferenceExpression(
ThisRef,
fieldName
)
)
);
// property summary
CommentEmitter.EmitSummaryComments(set, codeProperty.Comments);
return(codeProperty);
}