#region Copyright(c) Alexey Sadomov, Vladimir Timashkov. All Rights Reserved.
// -----------------------------------------------------------------------------
// Copyright(c) 2010 Alexey Sadomov, Vladimir Timashkov. All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. No Trademark License - Microsoft Public License (Ms-PL) does not grant you rights to use
// authors names, logos, or trademarks.
// 2. If you distribute any portion of the software, you must retain all copyright,
// patent, trademark, and attribution notices that are present in the software.
// 3. If you distribute any portion of the software in source code form, you may do
// so only under this license by including a complete copy of Microsoft Public License (Ms-PL)
// with your distribution. If you distribute any portion of the software in compiled
// or object code form, you may only do so under a license that complies with
// Microsoft Public License (Ms-PL).
// 4. The names of the authors may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// The software is licensed "as-is." You bear the risk of using it. The authors
// give no express warranties, guarantees or conditions. You may have additional consumer
// rights under your local laws which this license cannot change. To the extent permitted
// under your local laws, the authors exclude the implied warranties of merchantability,
// fitness for a particular purpose and non-infringement.
// -----------------------------------------------------------------------------
#endregion
using System;
using System.Collections.Generic;
using System.Linq.Expressions;
using System.Reflection;
using System.Xml.Linq;
using CamlexNET.Interfaces;
using Microsoft.SharePoint;
namespace CamlexNET.Impl.Operands
{
internal class FieldRefOperand : IOperand
{
protected string fieldName;
protected Guid? id;
private List<KeyValuePair<string, string>> attributes;
public string FieldName
{
get
{
return this.fieldName;
}
}
public Guid? FieldId
{
get
{
return this.id;
}
}
public List<KeyValuePair<string, string>> Attributes
{
get
{
return this.attributes;
}
}
protected FieldRefOperand(List<KeyValuePair<string, string>> attributes)
{
this.attributes = attributes;
}
public FieldRefOperand(string fieldName)
{
this.initialize(fieldName);
}
public FieldRefOperand(string fieldName, List<KeyValuePair<string, string>> attributes) :
this (attributes)
{
this.initialize(fieldName);
}
public FieldRefOperand(Guid id)
{
this.initialize(id);
}
public FieldRefOperand(Guid id, List<KeyValuePair<string, string>> attributes) :
this(attributes)
{
this.initialize(id);
}
protected void initialize(Guid id)
{
this.id = id;
}
protected void initialize(string fieldName)
{
this.fieldName = fieldName;
}
public virtual XElement ToCaml()
{
XElement element;
if (this.id != null)
{
element = new XElement(Tags.FieldRef, new XAttribute(CamlexNET.Attributes.ID, this.id.Value));
}
else if (!string.IsNullOrEmpty(this.fieldName))
{
element = new XElement(Tags.FieldRef, new XAttribute(CamlexNET.Attributes.Name, this.fieldName));
}
else
{
throw new FieldRefOperandShouldContainNameOrIdException();
}
if (this.attributes != null)
{
foreach (var attr in this.attributes)
{
// should not specify id or name twice
if (string.Compare(attr.Key, CamlexNET.Attributes.ID, true) == 0 ||
string.Compare(attr.Key, CamlexNET.Attributes.Name, true) == 0)
{
continue;
}
element.Add(new XAttribute(attr.Key, attr.Value));
}
}
return element;
}
public virtual Expression ToExpression()
{
if (this.id != null)
{
var mi = typeof(SPListItem).GetProperty(ReflectionHelper.Item, typeof(object), new[] { typeof(Guid) }, null).GetGetMethod();
var guidConstructor = typeof (Guid).GetConstructor(new[] { typeof(string) });
return
Expression.Call(
Expression.Parameter(typeof(SPListItem), ReflectionHelper.CommonParameterName),
mi, new[] { Expression.New(guidConstructor, Expression.Constant(this.id.Value.ToString())) });
}
else if (!string.IsNullOrEmpty(this.fieldName))
{
var mi = typeof(SPListItem).GetProperty(ReflectionHelper.Item, typeof(object), new[] { typeof(string) }, null).GetGetMethod();
return
Expression.Call(
Expression.Parameter(typeof(SPListItem), ReflectionHelper.CommonParameterName),
mi, new[] { Expression.Constant(this.fieldName) });
}
else
{
throw new FieldRefOperandShouldContainNameOrIdException();
}
}
}
}