/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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.
*/
/*
* $Id: Or.java,v 1.2.4.1 2005/09/14 21:31:41 jeffsuttor Exp $
*/
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));
}
}