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/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / EntityModel / SchemaObjectModel / ModelFunction.cs / 1305376 / ModelFunction.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System; using System.Collections; using System.Collections.Generic; using System.Collections.Specialized; using System.Diagnostics; using System.Globalization; using System.Xml; using System.Xml.Schema; using System.Data; using System.IO; using System.Data.Metadata.Edm; using System.Data.Entity; namespace System.Data.EntityModel.SchemaObjectModel { ////// class representing the Schema element in the schema /// internal class ModelFunction : Function { protected TypeUsageBuilder _typeUsageBuilder; #region Public Methods ////// ctor for a schema function /// public ModelFunction(Schema parentElement) : base(parentElement) { _isComposable = true; _typeUsageBuilder = new TypeUsageBuilder(this); } #endregion public override SchemaType Type { get { return this._type; } } internal TypeUsage TypeUsage { get { if (_typeUsageBuilder.TypeUsage == null) { return null; } else if (CollectionKind != CollectionKind.None) { return TypeUsage.Create(new CollectionType(_typeUsageBuilder.TypeUsage)); } else { return _typeUsageBuilder.TypeUsage; } } } internal void ValidateAndSetTypeUsage(ScalarType scalar) { _typeUsageBuilder.ValidateAndSetTypeUsage(scalar, false); } #region Protected Properties protected override bool HandleElement(XmlReader reader) { if (base.HandleElement(reader)) { return true; } else if (CanHandleElement(reader, XmlConstants.DefiningExpression)) { HandleDefiningExpressionElment(reader); return true; } else if (CanHandleElement(reader, XmlConstants.Parameter)) { HandleParameterElement(reader); return true; } return false; } protected override void HandleReturnTypeAttribute(XmlReader reader) { base.HandleReturnTypeAttribute(reader); _isComposable = true; } protected override bool HandleAttribute(XmlReader reader) { if (base.HandleAttribute(reader)) { return true; } else if (_typeUsageBuilder.HandleAttribute(reader)) { return true; } return false; } internal override void ResolveTopLevelNames() { if (null != UnresolvedReturnType) { if (Schema.ResolveTypeName(this, UnresolvedReturnType, out _type)) { if (_type is ScalarType) { _typeUsageBuilder.ValidateAndSetTypeUsage(_type as ScalarType, false); } } } foreach (Parameter parameter in this.Parameters) { parameter.ResolveTopLevelNames(); } if (ReturnType != null) { ReturnType.ResolveTopLevelNames(); } } #endregion private void HandleDefiningExpressionElment(XmlReader reader) { Debug.Assert(reader != null); FunctionCommandText commandText = new FunctionCommandText(this); commandText.Parse(reader); _commandText = commandText; } internal override void Validate() { base.Validate(); if (_type != null && _type is ScalarType == false && _typeUsageBuilder.HasUserDefinedFacets) { //Non-scalar return type should not have Facets AddError(ErrorCode.ModelFuncionFacetOnNonScalarType, EdmSchemaErrorSeverity.Error, Strings.FacetsOnNonScalarType(_type.FQName)); } if (_type == null && _typeUsageBuilder.HasUserDefinedFacets) { //Type attribute not specified but facets exist AddError(ErrorCode.ModelFunctionIncorrectlyPlacedFacet, EdmSchemaErrorSeverity.Error, Strings.FacetDeclarationRequiresTypeAttribute); } if (_type == null && _returnType == null) { //Return type not declared as either attribute or subelement AddError(ErrorCode.ModelFunctionReturnTypeNotDeclared, EdmSchemaErrorSeverity.Error, Strings.ReturnTypeMustBeDeclared(FQName)); } if (_type != null && _isRefType && !(_type is SchemaEntityType)) { //Ref type refers to non entity type AddError(ErrorCode.ReferenceToNonEntityType, EdmSchemaErrorSeverity.Error, Strings.ReferenceToNonEntityType(_type.FQName)); } foreach (var param in _parameters) { param.ValidateForModelFunction(); } if (_returnType != null) { _returnType.ValidateForModelFunction(); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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