/**
* Copyright 2010 Google Inc.
*
* 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.
*
*/
package org.waveprotocol.wave.model.document.util;
/**
* Checked exception thrown by methods that find a node in some context.
*
* Such methods usually succeed but rarely fail, and as such it is dangerous simply to return null
* for when the node is not found, as the corner case might not initially be noticed in calling
* code. Therefore the use of this checked exception is encouraged.
*
* @author danilatos@google.com (Daniel Danilatos)
*
*/
public class NodeNotFoundException extends Exception {
/***/
public NodeNotFoundException(String message) {
super(message);
}
/***/
public NodeNotFoundException(String message, Throwable cause) {
super(message, cause);
}
@Override
public String toString() {
return "NodeNotFoundException[" + super.toString() + "]";
}
/**
* Rethrow as a runtime exception, providing a reason why it is an impossible
* condition, hence warranting promotion from checked to runtime.
*
* @param reasonWhyImpossible
*/
public void throwAsRuntime(String reasonWhyImpossible) {
throw new RuntimeException(reasonWhyImpossible, this);
}
}