/*
 * Copyright (c) 2001-2008
 *     DecisionSoft Limited. All rights reserved.
 * Copyright (c) 2004-2008
 *     Oracle. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * $Id: CollationImpl.hpp 475 2008-01-08 18:47:44Z jpcs $
 */

#ifndef COLLATIONIMPL_HPP
#define COLLATIONIMPL_HPP

#include <xqilla/framework/XQillaExport.hpp>

#include <xqilla/context/Collation.hpp>
#include <xqilla/runtime/Sequence.hpp>

class Item;
class XPath2MemoryManager;
class DynamicContext;

class XQILLA_API CollationHelper
{
public:
    virtual ~CollationHelper() {};
  virtual const XMLCh* getCollationName() const = 0;
  virtual int compare(const XMLCh* string1, const XMLCh* string2) const = 0;
};

class XQILLA_API CollationImpl : public Collation 
{
public:
  CollationImpl(XPath2MemoryManager* memMgr, CollationHelper* helper);

  virtual const XMLCh* getCollationName() const;
  virtual Sequence sort(Sequence data, const DynamicContext* context) const;
  virtual int compare(const XMLCh* const string1, const XMLCh* const string2) const;

protected:
    XPath2MemoryManager* _memMgr;
    CollationHelper* _helper;
};

#endif