- /*
- * 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: Bool.java,v 1.9 2004/02/17 04:35:12 minchau 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 'boolean()' operation expression executer.
- */
- public class Bool extends UnaryOperation
- {
-
- /**
- * Apply the operation to two operands, and return the result.
- *
- *
- * @param right non-null reference to the evaluated right operand.
- *
- * @return non-null reference to the XObject that represents the result of the operation.
- *
- * @throws javax.xml.transform.TransformerException
- */
- public XObject operate(XObject right) throws javax.xml.transform.TransformerException
- {
-
- if (XObject.CLASS_BOOLEAN == right.getType())
- return right;
- else
- return right.bool() ? XBoolean.S_TRUE : 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_right.bool(xctxt);
- }
-
- }