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A reactive Java web server.

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/*
 * 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.util.Objects;

/**
 * Building a program for hessian.
 */
public class PathFieldBuilder extends ExprBuilderKelp
{
  private final QueryBuilderKelp _top;

  private final PathBuilder _parent;
  private final String _name;
  
  PathFieldBuilder(QueryBuilderKelp top, 
                   PathBuilder parent,
                   String name)
  {
    Objects.requireNonNull(top);
    Objects.requireNonNull(parent);
    Objects.requireNonNull(name);
    
    _top = top;
    _parent = parent;
    _name = name;
  }
  
  public CmpBuilder eq()
  {
    return new CmpBuilder(BinaryOpKelp.EQ, this);
  }
  
  @Override
  protected ExprKelp buildValue(QueryBuilder builder)
  {
    PathMapHessian pathMap = _parent.getPathMap();
    
    int index = builder.allocateValue();
    
    pathMap.put(_name, new PathHessianField(this, _name, index));
    
    return new PathFieldExprHessian(_name, index);
  }
  
  @Override
  public String toString()
  {
    return _parent + "." + _name;
  }
}