19f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/* 29f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Licensed to the Apache Software Foundation (ASF) under one 39f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * or more contributor license agreements. See the NOTICE file 49f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * distributed with this work for additional information 59f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * regarding copyright ownership. The ASF licenses this file 69f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * to you under the Apache License, Version 2.0 (the "License"); 79f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * you may not use this file except in compliance with the License. 89f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * You may obtain a copy of the License at 99f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 109f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * http://www.apache.org/licenses/LICENSE-2.0 119f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 129f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Unless required by applicable law or agreed to in writing, software 139f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * distributed under the License is distributed on an "AS IS" BASIS, 149f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 159f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * See the License for the specific language governing permissions and 169f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * limitations under the License. 179f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 189f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/* 199f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * $Id: And.java 468655 2006-10-28 07:12:06Z minchau $ 209f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 219f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonpackage org.apache.xpath.operations; 229f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 239f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xpath.XPathContext; 249f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xpath.objects.XBoolean; 259f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xpath.objects.XObject; 269f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 279f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/** 289f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * The 'and' operation expression executer. 299f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 309f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonpublic class And extends Operation 319f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson{ 329f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson static final long serialVersionUID = 392330077126534022L; 339f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 349f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 359f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * AND two expressions and return the boolean result. Override 369f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * superclass method for optimization purposes. 379f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 389f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param xctxt The runtime execution context. 399f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 409f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @return {@link org.apache.xpath.objects.XBoolean#S_TRUE} or 419f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * {@link org.apache.xpath.objects.XBoolean#S_FALSE}. 429f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 439f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @throws javax.xml.transform.TransformerException 449f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 459f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException 469f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 479f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 489f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson XObject expr1 = m_left.execute(xctxt); 499f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 509f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson if (expr1.bool()) 519f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 529f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson XObject expr2 = m_right.execute(xctxt); 539f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 549f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson return expr2.bool() ? XBoolean.S_TRUE : XBoolean.S_FALSE; 559f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 569f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson else 579f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson return XBoolean.S_FALSE; 589f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 599f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 609f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 619f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Evaluate this operation directly to a boolean. 629f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 639f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param xctxt The runtime execution context. 649f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 659f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @return The result of the operation as a boolean. 669f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 679f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @throws javax.xml.transform.TransformerException 689f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 699f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public boolean bool(XPathContext xctxt) 709f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson throws javax.xml.transform.TransformerException 719f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 729f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson return (m_left.bool(xctxt) && m_right.bool(xctxt)); 739f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 749f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 759f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson} 76