/* | |
* 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.logging.log4j.nosql.appender; | |
import java.util.concurrent.atomic.AtomicBoolean; | |
/** | |
* Facilitates implementations of {@link NoSqlConnection}. | |
* | |
* @param <W> | |
* See {@link NoSqlConnection}. | |
* @param <T>See | |
* {@link NoSqlConnection}. | |
*/ | |
public abstract class AbstractNoSqlConnection<W, T extends NoSqlObject<W>> implements NoSqlConnection<W, T> { | |
private final AtomicBoolean closed = new AtomicBoolean(false); | |
@Override | |
public void close() { | |
if (this.closed.compareAndSet(false, true)) { | |
closeImpl(); | |
} | |
} | |
protected abstract void closeImpl(); | |
@Override | |
public boolean isClosed() { | |
return this.closed.get(); | |
} | |
} |