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/*
* Copyright (c) 2016 LARUS Business Automation [http://www.larus-ba.it]
*
* This file is part of the "LARUS Integration Framework for Neo4j".
*
* The "LARUS Integration Framework for Neo4j" is 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.
*
* Created on 09/03/16
*/
package org.neo4j.jdbc;
import java.sql.SQLException;
/**
* @author AgileLARUS
* @since 3.0.0
*/
class Wrapper {
@SuppressWarnings("unchecked") public static T unwrap(Class iface, Object obj) throws SQLException {
if (!isWrapperFor(iface, obj.getClass())) {
//Current class is not implementing the requested class
throw new SQLException();
}
return (T) obj;
}
public static boolean isWrapperFor(Class iface, Class cls) throws SQLException {
if (cls.getName().equals(iface.getName())) {
//iface is the cls class
return true;
}
for (Class c : cls.getInterfaces()) {
//Looking inside current class implementations
if (c.getName().equals(iface.getName())) {
//The cls class implements iface
return true;
} else if (isWrapperFor(iface, c)) {
//Recursively search inside cls' interface
return true;
}
}
if (cls.getSuperclass() != null) {
//Recursively search inside the cls' superclass
return isWrapperFor(iface, cls.getSuperclass());
} else {
//iface is not directly or indirectly implemented in cls
return false;
}
}
}