/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.jdbc;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.sql.SQLException;
import java.sql.Wrapper;
import org.teiid.jdbc.WrapperImpl;
import junit.framework.TestCase;
public class TestWrapperImpl extends TestCase {
interface Foo extends Wrapper {
void callMe();
}
static class FooImpl extends WrapperImpl implements Foo {
boolean wasCalled;
public void callMe() {
wasCalled = true;
}
}
public void testProxy() throws SQLException {
final FooImpl fooImpl = new FooImpl();
Foo proxy = (Foo)Proxy.newProxyInstance(TestWrapperImpl.class.getClassLoader(), new Class[] {Foo.class}, new InvocationHandler() {
public Object invoke(Object arg0, Method arg1, Object[] arg2)
throws Throwable {
if (arg1.getName().equals("callMe")) {
return null;
}
try {
return arg1.invoke(fooImpl, arg2);
} catch (InvocationTargetException e) {
throw e.getTargetException();
}
}
});
proxy.callMe();
assertFalse(fooImpl.wasCalled);
proxy.unwrap(Foo.class).callMe();
assertTrue(fooImpl.wasCalled);
try {
proxy.unwrap(String.class);
fail("expected exception");
} catch (SQLException e) {
assertEquals("Wrapped object is not an instance of class java.lang.String", e.getMessage());
}
}
}