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/*
* Copyright 2002-2004 The Apache Software Foundation.
*
* 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 test.concurrency;
/**
* An Axis service to test application scope. There should be exactly one
* instance of this class, if we end up with more then application scope
* isn't working correctly.
*
* @author Glen Daniels (gdaniels@apache.org)
*/
public class TestService {
private static Object lock = new Object();
private static TestService singleton = null;
public static final String MESSAGE = "Hi there, come here often?";
public TestService() throws Exception {
synchronized (lock) {
if (singleton != null) {
// We're not the first/only one, so throw an Exception!
throw new Exception("Multiple instances of TestService created!");
}
singleton = this;
}
}
public String hello() {
return MESSAGE;
}
}
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