text: /*
   * Copyright 2006-2008 The FLWOR Foundation.
   * 
   * 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.
   */
  #pragma once
  #ifndef ZORBA_FULL_TEXT_FT_QUERY_ITEM_H
  #define ZORBA_FULL_TEXT_FT_QUERY_ITEM_H
  
  #include <list>
  #include <vector>
  
  #include "store/api/ft_token_iterator.h"
  
  namespace zorba {
  
  ///////////////////////////////////////////////////////////////////////////////
  
  /**
   * This corresponds to <code>element(fts::queryItem)</code>.  Note that the
   * specification defines \c queryItem to be a sequence of zero or more
   * <code>queryToken</code>s.
   */
  typedef FTTokenIterator_t query_item_t;
  
  /**
   * This corresponds to <code>element(fts::queryItem)*</code>.
   */
  typedef std::list<query_item_t> query_item_star_t;
  
  ///////////////////////////////////////////////////////////////////////////////
  
  /**
   * A %query_item_star_iterator is-an FTTokenIterator that iterates over a
   * query_item_star_t.
   */
  class query_item_star_iterator : public FTTokenIterator {
  public:
    query_item_star_iterator( query_item_star_t& );
    query_item_star_iterator( query_item_star_t* );
    ~query_item_star_iterator();
  
    // inherited
    index_t begin() const;
    index_t end() const;
    bool hasNext() const;
    Mark_t pos() const;
    void pos( Mark_t const& );
    FTToken const* next();
    void reset();
  
  private:
    typedef std::vector<Mark_t> MarkSeq;
  
    struct LocalMark : Mark {
      MarkSeq marks_;
      query_item_star_t::iterator qi_;
    };
  
    void init();
  
    query_item_star_t *const qi_star_;
    query_item_star_t::iterator qi_;
    bool const delete_;
  };
  
  ///////////////////////////////////////////////////////////////////////////////
  
  } // namespace zorba
  #endif  /* ZORBA_FULL_TEXT_FT_QUERY_ITEM_H */
  /* vim:set et sw=2 ts=2: */
  