// Copyright 2009 Google Inc. All Rights Reserved.
//
// 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 com.google.enterprise.connector.traversal;
/**
* A mock query traverser that can be canceled.
*/
public class CancellableQueryTraverser implements Traverser {
boolean cancelled = false;
public BatchResult runBatch(BatchSize ignored) {
// infinite loop
while (!isCancelled()) {
try {
Thread.sleep(1000);
} catch (InterruptedException ie) {
// do nothing
}
}
return new BatchResult(TraversalDelayPolicy.POLL, 0);
}
public synchronized void cancelBatch() {
cancelled = true;
}
public synchronized boolean isCancelled() {
return cancelled;
}
}