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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.kraken.query;

import com.caucho.v5.kelp.Column;
import com.caucho.v5.kelp.query.BinaryOpKelp;
import com.caucho.v5.kelp.query.ExprBuilderKelp;

public class PodKeyExpr extends ExprKraken
{
  private final Column _column;
  private final ExprKraken _expr;
  
  public PodKeyExpr(Column column,
                 ExprKraken expr)
  {
    _column = column;
    _expr = expr;
  }

  public Column getColumn()
  {
    return _column;
  }
  //
  // builder methods
  //

  @Override
  public ExprBuilderKelp buildKelp(QueryBuilderKraken builder)
  {
    ExprBuilderKelp right = _expr.buildKelp(builder);
    
    return builder.getBuilderKelp()
                  .field(_column.name())
                  .op(BinaryOpKelp.EQ, right); 
  }
  
  //
  // eval methods
  //

  /**
   * Returns the partition hash code of the key
   */
  /*
  @Override
  public int partitionHash(Object[] args)
  {
    return 0; // XXX:
  }
  */

  @Override
  public String toString()
  {
    return getClass().getSimpleName() + "[" + _column + "," + _expr + "]";
  }
}