GetDataRowValueExpression.java

/*
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program 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.
 * See the GNU Lesser General Public License for more details.
 *
 * Copyright (c) 2001 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors..  All rights reserved.
 */

package org.pentaho.reporting.engine.classic.core.function.sys;

import org.pentaho.reporting.engine.classic.core.function.AbstractExpression;

public class GetDataRowValueExpression extends AbstractExpression {
  private String field;

  public GetDataRowValueExpression() {
  }

  public String getField() {
    return field;
  }

  public void setField( final String field ) {
    this.field = field;
  }

  /**
   * Return the current expression value.
   * <p/>
   * The value depends (obviously) on the expression implementation.
   *
   * @return the value of the function.
   */
  public Object getValue() {
    if ( getField() != null ) {
      return getDataRow().get( getField() );
    }
    return null;
  }
}