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The core JMS Client implementation
/*
* 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.jms.jndi;
import javax.naming.NameNotFoundException;
import javax.naming.NamingException;
/**
* Allows users to dynamically create items
*
* @since 1.0
*/
public abstract class LazyCreateContext extends ReadOnlyContext {
private static final long serialVersionUID = 5131341840091473967L;
@Override
public Object lookup(String name) throws NamingException {
try {
return super.lookup(name);
} catch (NameNotFoundException e) {
Object answer = createEntry(name);
if (answer == null) {
throw e;
}
internalBind(name, answer);
return answer;
}
}
protected abstract Object createEntry(String name);
}
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