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 * reserved comment block

 * DO NOT REMOVE OR ALTER!

 */

/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You 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.

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package com.sun.org.apache.xpath.internal.operations;

import com.sun.org.apache.xpath.internal.XPathContext;

import com.sun.org.apache.xpath.internal.objects.XBoolean;

import com.sun.org.apache.xpath.internal.objects.XObject;

/**

 * The 'or' operation expression executer.

 */

public class Or extends Operation

{

    static final long serialVersionUID = -644107191353853079L;

  /**

   * OR two expressions and return the boolean result. Override

   * superclass method for optimization purposes.

   *

   * @param xctxt The runtime execution context.

   *

   * @return {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_TRUE} or

   * {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_FALSE}.

   *

   * @throws javax.xml.transform.TransformerException

   */

  public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException

  {

    XObject expr1 = m_left.execute(xctxt);

    if (!expr1.bool())

    {

      XObject expr2 = m_right.execute(xctxt);

      return expr2.bool() ? XBoolean.S_TRUE : XBoolean.S_FALSE;

    }

    else

      return XBoolean.S_TRUE;

  }

  /**

   * Evaluate this operation directly to a boolean.

   *

   * @param xctxt The runtime execution context.

   *

   * @return The result of the operation as a boolean.

   *

   * @throws javax.xml.transform.TransformerException

   */

  public boolean bool(XPathContext xctxt)

          throws javax.xml.transform.TransformerException

  {

    return (m_left.bool(xctxt) || m_right.bool(xctxt));

  }

}