001    /**
002     *
003     * Copyright 2003-2004 The Apache Software Foundation
004     *
005     *  Licensed under the Apache License, Version 2.0 (the "License");
006     *  you may not use this file except in compliance with the License.
007     *  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    
018    //
019    // This source code implements specifications defined by the Java
020    // Community Process. In order to remain compliant with the specification
021    // DO NOT add / change / or delete method signatures!
022    //
023    package javax.xml.registry;
024    
025    /**
026     * Signals that a JAXR exception has occurred.
027     * Note that the Exception chaining here is different from JDK1.4
028     *
029     * @version $Revision$ $Date$
030     */
031    public class JAXRException extends Exception implements JAXRResponse {
032        protected Throwable cause;
033    
034        public JAXRException() {
035        }
036    
037        public JAXRException(String message) {
038            super(message);
039        }
040    
041        public JAXRException(Throwable cause) {
042            super(cause);
043            this.cause = cause;
044        }
045    
046        public JAXRException(String message, Throwable cause) {
047            super(message, cause);
048            this.cause = cause;
049        }
050    
051        public synchronized Throwable initCause(Throwable cause) {
052    
053            if (this.cause != null) {
054                throw new IllegalStateException("Cannot overwrite cause.");
055            }
056    
057            this.cause = cause;
058            return this;
059        }
060    
061        public String getMessage() {
062            String message = super.getMessage();
063            return (message == null && cause != null) ? cause.getMessage() : message;
064        }
065    
066        public Throwable getCause() {
067            return cause;
068        }
069    
070        public String getRequestId() {
071            return null;
072        }
073    
074        public int getStatus() {
075            return 0;
076        }
077    
078        public boolean isAvailable() throws JAXRException {
079            return true;
080        }
081    }