| /* |
| * 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.geode.cache.execute; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| |
| import org.apache.geode.GemFireException; |
| import org.apache.geode.internal.Assert; |
| |
| /** |
| * Thrown to indicate an error or exceptional condition during the execution of |
| * {@linkplain Function}s in GemFire. This exception can be thrown by GemFire as well as user code, |
| * in the implementation of {@linkplain Function#execute(FunctionContext)}. When FunctionException |
| * is thrown in an implementation of {@linkplain Function#execute(FunctionContext)}, GemFire will |
| * transmit it back to, and throw it on, the calling side. For example, if a GemFire client executes |
| * a Function on a server, and the function's execute method throws a FunctionException, the server |
| * logs the exception as a warning, and transmits it back to the calling client, which throws it. |
| * This allows for separation of business and error handling logic, as client code that processes |
| * function execution results does not have to deal with errors; errors can be dealt with in the |
| * exception handling logic, by catching this exception. |
| * |
| * <p> |
| * The exception string provides details on the cause of failure. |
| * </p> |
| * |
| * @since GemFire 6.0 |
| * @see FunctionService |
| */ |
| public class FunctionException extends GemFireException { |
| |
| private static final long serialVersionUID = 4893171227542647452L; |
| |
| private transient ArrayList<Throwable> exceptions; |
| |
| /** |
| * Creates new function exception with given error message. |
| * |
| * @since GemFire 6.5 |
| */ |
| public FunctionException() {} |
| |
| /** |
| * Creates new function exception with given error message. |
| * |
| * @since GemFire 6.0 |
| */ |
| public FunctionException(String msg) { |
| super(msg); |
| } |
| |
| /** |
| * Creates new function exception with given error message and optional nested exception. |
| * |
| * @since GemFire 6.0 |
| */ |
| public FunctionException(String msg, Throwable cause) { |
| super(msg, cause); |
| } |
| |
| /** |
| * Creates new function exception given throwable as a cause and source of error message. |
| * |
| * @since GemFire 6.0 |
| */ |
| public FunctionException(Throwable cause) { |
| super(cause); |
| } |
| |
| /** |
| * Adds exceptions thrown from different nodes to a ds |
| * |
| * @since GemFire 6.5 |
| */ |
| public void addException(Throwable cause) { |
| Assert.assertTrue(cause != null, "unexpected null exception to add to FunctionException"); |
| getExceptions().add(cause); |
| } |
| |
| /** |
| * Returns the list of exceptions thrown from different nodes |
| * |
| * @since GemFire 6.5 |
| */ |
| public List<Throwable> getExceptions() { |
| if (this.exceptions == null) { |
| this.exceptions = new ArrayList<Throwable>(); |
| } |
| return this.exceptions; |
| } |
| |
| /** |
| * Adds the list of exceptions provided |
| * |
| * @since GemFire 6.5 |
| */ |
| public void addExceptions(Collection<? extends Throwable> ex) { |
| getExceptions().addAll(ex); |
| } |
| } |