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/*-
* ============LICENSE_START=======================================================
* openecomp
* ================================================================================
* Copyright (C) 2016 - 2017 AT&T
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
/*
* 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.tomcat.jdbc.pool;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.sql.SQLException;
/**
* A DisposableConnectionFacade object is the top most interceptor that wraps an
* object of type {@link PooledConnection}. The ProxyCutOffConnection intercepts
* two methods:
* <ul>
* <li>{@link java.sql.Connection#close()} - returns the connection to the
* pool then breaks the link between cutoff and the next interceptor.
* May be called multiple times.</li>
* <li>{@link java.lang.Object#toString()} - returns a custom string for this
* object</li>
* </ul>
* By default method comparisons is done on a String reference level, unless the
* {@link PoolConfiguration#setUseEquals(boolean)} has been called with a
* <code>true</code> argument.
*/
public class DisposableConnectionFacade extends JdbcInterceptor {
protected DisposableConnectionFacade(JdbcInterceptor interceptor) {
setUseEquals(interceptor.isUseEquals());
setNext(interceptor);
}
@Override
public void reset(ConnectionPool parent, PooledConnection con) {
}
@Override
public int hashCode() {
return System.identityHashCode(this);
}
@Override
public boolean equals(Object obj) {
return this==obj;
}
@Override
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
if (compare(EQUALS_VAL, method)) {
return Boolean.valueOf(
this.equals(Proxy.getInvocationHandler(args[0])));
} else if (compare(HASHCODE_VAL, method)) {
return Integer.valueOf(this.hashCode());
} else if (getNext()==null) {
if (compare(ISCLOSED_VAL, method)) {
return Boolean.TRUE;
}
else if (compare(CLOSE_VAL, method)) {
return null;
}
else if (compare(ISVALID_VAL, method)) {
return Boolean.FALSE;
}
}
try {
return super.invoke(proxy, method, args);
} catch (NullPointerException e) {
if (getNext() == null) {
if (compare(TOSTRING_VAL, method)) {
return "DisposableConnectionFacade[null]";
}
throw new SQLException(
"PooledConnection has already been closed.");
}
throw e;
} finally {
if (compare(CLOSE_VAL, method)) {
setNext(null);
}
}
}
}
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