2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
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19 * $Id: And.java 468655 2006-10-28 07:12:06Z minchau $
21 package org.apache.xpath.operations;
23 import org.apache.xpath.XPathContext;
24 import org.apache.xpath.objects.XBoolean;
25 import org.apache.xpath.objects.XObject;
28 * The 'and' operation expression executer.
30 public class And extends Operation
32 static final long serialVersionUID = 392330077126534022L;
35 * AND two expressions and return the boolean result. Override
36 * superclass method for optimization purposes.
38 * @param xctxt The runtime execution context.
40 * @return {@link org.apache.xpath.objects.XBoolean#S_TRUE} or
41 * {@link org.apache.xpath.objects.XBoolean#S_FALSE}.
43 * @throws javax.xml.transform.TransformerException
45 public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
48 XObject expr1 = m_left.execute(xctxt);
52 XObject expr2 = m_right.execute(xctxt);
54 return expr2.bool() ? XBoolean.S_TRUE : XBoolean.S_FALSE;
57 return XBoolean.S_FALSE;
61 * Evaluate this operation directly to a boolean.
63 * @param xctxt The runtime execution context.
65 * @return The result of the operation as a boolean.
67 * @throws javax.xml.transform.TransformerException
69 public boolean bool(XPathContext xctxt)
70 throws javax.xml.transform.TransformerException
72 return (m_left.bool(xctxt) && m_right.bool(xctxt));