com.caucho.v5.kelp.query.PathObjectKelp Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of baratine Show documentation
A reactive Java web server.
There is a newer version: 1.0.1
/*
 * Copyright (c) 1998-2015 Caucho Technology -- all rights reserved
 *
 * This file is part of Baratine(TM)
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Baratine is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Baratine is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Baratine; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.v5.kelp.query;

import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.caucho.v5.h3.InH3;
import com.caucho.v5.h3.OutFactoryH3;
import com.caucho.v5.h3.QueryBuilderH3;
import com.caucho.v5.h3.QueryH3;
import com.caucho.v5.kelp.Column;
import com.caucho.v5.kelp.RowCursor;

/**
 * Building path values for kelp.
 */
public class PathObjectKelp extends PathKelp
{
  private static final Logger log
    = Logger.getLogger(PathObjectKelp.class.getName());
  
  private final PathMapHessian _pathMap;

  private QueryBuilderH3 _queryBuilder;

  private QueryH3 _query;

  private OutFactoryH3 _serializer;
  
  PathObjectKelp(Column column, OutFactoryH3 serializer)
  {
    super(column);
    
    _serializer = serializer;
    _queryBuilder = serializer.newQuery();
    
    _pathMap = new PathMapHessian(_queryBuilder);
  }
  
  @Override
  public PathMapHessian pathMap()
  {
    return _pathMap;
  }
  
  @Override
  void scan(EnvKelp query, Object []values, RowCursor cursor)
  {
    try (InputStream is = cursor.openInputStream(getColumn().getIndex())) {
      if (is == null) {
        return;
      }

      System.out.println("Q: " + is);
      _serializer.query(is, query(), values);
    } catch (IOException e) {
      log.log(Level.FINER, e.toString(), e);
    }
  }
  
  void build()
  {
    if (_query == null) {
      _query = _queryBuilder.build();
    }
  }
  
  QueryH3 query()
  {
    if (_query == null) {
      _query = _queryBuilder.build();
    }
    
    return _query;
  }
            
  @Override
  public String toString()
  {
    return getClass().getSimpleName() + "[]";
  }
}