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Diffstat (limited to 'qpid/java/common/src/main/java/org/apache/qpid/AMQException.java')
-rw-r--r-- | qpid/java/common/src/main/java/org/apache/qpid/AMQException.java | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/qpid/java/common/src/main/java/org/apache/qpid/AMQException.java b/qpid/java/common/src/main/java/org/apache/qpid/AMQException.java new file mode 100644 index 0000000000..b0c6fccc9e --- /dev/null +++ b/qpid/java/common/src/main/java/org/apache/qpid/AMQException.java @@ -0,0 +1,124 @@ +/* + * + * 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. + * + */ +package org.apache.qpid; + +import org.apache.qpid.protocol.AMQConstant; + +/** + * AMQException forms the root exception of all exceptions relating to the AMQ protocol. It provides space to associate + * a required AMQ error code with the exception, which is a numeric value, with a meaning defined by the protocol. + * + * <p/><table id="crc"><caption>CRC Card</caption> + * <tr><th> Responsibilities <th> Collaborations + * <tr><td> Represents an exception condition associated with an AMQ protocol status code. + * </table> + * + * @todo This exception class is also used as a generic exception throughout Qpid code. This usage may not be strictly + * correct if this is to signify a protocol exception. Should review. + */ +public class AMQException extends Exception +{ + /** Holds the AMQ error code constant associated with this exception. */ + private AMQConstant _errorCode; + + /** + * Creates an exception with an optional error code, optional message and optional underlying cause. + * + * @param errorCode The error code. May be null if not to be set. + * @param msg The exception message. May be null if not to be set. + * @param cause The underlying cause of the exception. May be null if not to be set. + */ + public AMQException(AMQConstant errorCode, String msg, Throwable cause) + { + super(((msg == null) ? "" : msg), cause); + _errorCode = errorCode; + } + + /* + * Deprecated constructors brought from M2.1 + */ + @Deprecated + public AMQException(String msg) + { + this(null, (msg == null) ? "" : msg); + } + + @Deprecated + public AMQException(AMQConstant errorCode, String msg) + { + this(errorCode, (msg == null) ? "" : msg, null); + } + + @Deprecated + public AMQException(String msg, Throwable cause) + { + this(null, msg, cause); + } + + @Override + public String toString() + { + return getClass().getName() + ": " + getMessage() + (_errorCode == null ? "" : " [error code " + _errorCode + "]"); + } + + /** + * Gets the AMQ protocol exception code associated with this exception. + * + * @return The AMQ protocol exception code associated with this exception. + */ + public AMQConstant getErrorCode() + { + return _errorCode; + } + + public boolean isHardError() + { + return true; + } + + /** + * Rethrown this exception as a new exception. + * + * Attempt to create a new exception of the same class if they have the default constructor of: + * {AMQConstant.class, String.class, Throwable.class} + * <p> + * Individual subclasses may override as requried to create a new instance. + */ + public AMQException cloneForCurrentThread() + { + Class amqeClass = this.getClass(); + Class<?>[] paramClasses = {AMQConstant.class, String.class, Throwable.class}; + Object[] params = {getErrorCode(), getMessage(), this}; + + AMQException newAMQE; + + try + { + newAMQE = (AMQException) amqeClass.getConstructor(paramClasses).newInstance(params); + } + catch (Exception creationException) + { + newAMQE = new AMQException(getErrorCode(), getMessage(), this); + } + + return newAMQE; + } +} |