//---------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//
// @owner Microsoft
// @backupOwner Microsoft
//---------------------------------------------------------------------
namespace System.Data.EntityModel.SchemaObjectModel
{
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Data.Metadata.Edm;
using System.Diagnostics;
using System.Globalization;
using System.Text;
using System.Xml;
using Som = System.Data.EntityModel.SchemaObjectModel;
///
/// Summary description for StructuredProperty.
///
internal class Parameter : FacetEnabledSchemaElement
{
#region Instance Fields
private ParameterDirection _parameterDirection = ParameterDirection.Input;
private CollectionKind _collectionKind = CollectionKind.None;
private ModelFunctionTypeElement _typeSubElement = null;
private bool _isRefType = false;
#endregion
#region constructor
///
///
///
///
internal Parameter(Function parentElement)
: base(parentElement)
{
_typeUsageBuilder = new TypeUsageBuilder(this);
}
#endregion
#region Public Properties
internal ParameterDirection ParameterDirection
{
get
{
return _parameterDirection;
}
}
internal CollectionKind CollectionKind
{
get
{
return _collectionKind;
}
set
{
_collectionKind = value;
}
}
internal bool IsRefType
{
get { return _isRefType; }
}
internal override TypeUsage TypeUsage
{
get
{
if (_typeSubElement != null)
{
return _typeSubElement.GetTypeUsage();
}
else if (base.TypeUsage == null)
{
return null;
}
else if (CollectionKind != CollectionKind.None)
{
return TypeUsage.Create(new CollectionType(base.TypeUsage));
}
else
{
return base.TypeUsage;
}
}
}
#endregion
new internal SchemaType Type
{
get
{
return _type;
}
}
internal void WriteIdentity(StringBuilder builder)
{
builder.Append("Parameter(");
if (UnresolvedType != null && !UnresolvedType.Trim().Equals(String.Empty))
{
if (_collectionKind != CollectionKind.None)
{
builder.Append("Collection(" + UnresolvedType + ")");
}
else if (_isRefType)
{
builder.Append("Ref(" + UnresolvedType + ")");
}
else
{
builder.Append(UnresolvedType);
}
}
else if (_typeSubElement!=null)
{
_typeSubElement.WriteIdentity(builder);
}
builder.Append(")");
}
internal override SchemaElement Clone(SchemaElement parentElement)
{
Parameter parameter = new Parameter((Function)parentElement);
parameter._collectionKind = _collectionKind;
parameter._parameterDirection = _parameterDirection;
parameter._type = _type;
parameter.Name = this.Name;
parameter._typeUsageBuilder = this._typeUsageBuilder;
return parameter;
}
internal bool ResolveNestedTypeNames(Converter.ConversionCache convertedItemCache, Dictionary newGlobalItems)
{
if (_typeSubElement == null)
{
return false;
}
return _typeSubElement.ResolveNameAndSetTypeUsage(convertedItemCache, newGlobalItems);
}
protected override bool HandleAttribute(XmlReader reader)
{
if (base.HandleAttribute(reader))
{
return true;
}
else if (CanHandleAttribute(reader, XmlConstants.TypeElement))
{
HandleTypeAttribute(reader);
return true;
}
else if (CanHandleAttribute(reader, XmlConstants.Mode))
{
HandleModeAttribute(reader);
return true;
}
else if (_typeUsageBuilder.HandleAttribute(reader))
{
return true;
}
return false;
}
#region Private Methods
private void HandleTypeAttribute(XmlReader reader)
{
Debug.Assert(reader != null);
Debug.Assert(UnresolvedType == null);
string type;
if (!Utils.GetString(Schema, reader, out type))
return;
TypeModifier typeModifier;
Function.RemoveTypeModifier(ref type, out typeModifier, out _isRefType);
switch (typeModifier)
{
case TypeModifier.Array:
CollectionKind = CollectionKind.Bag;
break;
default:
Debug.Assert(typeModifier == TypeModifier.None, string.Format(CultureInfo.CurrentCulture, "Type is not valid for property {0}: {1}. The modifier for the type cannot be used in this context.", FQName, reader.Value));
break;
}
if (!Utils.ValidateDottedName(Schema, reader, type))
return;
UnresolvedType = type;
}
private void HandleModeAttribute(XmlReader reader)
{
Debug.Assert(reader != null);
string value = reader.Value;
if (String.IsNullOrEmpty(value))
{
return;
}
value = value.Trim();
if (!String.IsNullOrEmpty(value))
{
switch (value)
{
case XmlConstants.In:
_parameterDirection = ParameterDirection.Input;
break;
case XmlConstants.Out:
_parameterDirection = ParameterDirection.Output;
if (this.ParentElement.IsComposable && this.ParentElement.IsFunctionImport)
{
AddErrorBadParameterDirection(value, reader, System.Data.Entity.Strings.BadParameterDirectionForComposableFunctions);
}
break;
case XmlConstants.InOut:
_parameterDirection = ParameterDirection.InputOutput;
if (this.ParentElement.IsComposable && this.ParentElement.IsFunctionImport)
{
AddErrorBadParameterDirection(value, reader, System.Data.Entity.Strings.BadParameterDirectionForComposableFunctions);
}
break;
default:
{
AddErrorBadParameterDirection(value, reader, System.Data.Entity.Strings.BadParameterDirection);
}
break;
}
}
}
private void AddErrorBadParameterDirection(string value, XmlReader reader, Func