/*
* 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.
*/
/*
* $Id: And.java 468655 2006-10-28 07:12:06Z minchau $
*/
package org.apache.xpath.operations;
import org.apache.xpath.XPathContext;
import org.apache.xpath.objects.XBoolean;
import org.apache.xpath.objects.XObject;
/**
* The 'and' operation expression executer.
*/
public class And extends Operation
{
static final long serialVersionUID = 392330077126534022L;
/**
* AND two expressions and return the boolean result. Override
* superclass method for optimization purposes.
*
* @param xctxt The runtime execution context.
*
* @return {@link org.apache.xpath.objects.XBoolean#S_TRUE} or
* {@link org.apache.xpath.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_FALSE;
}
/**
* 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));
}
}