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/*
*
* Copyright 2006 The Apache Software Foundation or its licensors as applicable
*
* 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.
*/
package org.apache.tuscany.osgi.binding;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.apache.tuscany.spi.wire.InvocationRuntimeException;
import org.apache.tuscany.spi.wire.Message;
import org.apache.tuscany.spi.wire.TargetInvoker;
/**
* Invokes the target service of an OSGi reference.
*
* @version $Rev$ $Date$
*/
public class OSGiInvoker implements TargetInvoker {
private final Method remoteMethod;
private final Object proxy;
OSGiInvoker(Object proxy, Method remoteMethod) {
assert remoteMethod.isAccessible();
this.remoteMethod = remoteMethod;
this.proxy = proxy;
}
public Message invoke(Message msg) throws InvocationRuntimeException {
try {
Object resp = invokeTarget(msg.getBody(), TargetInvoker.NONE);
msg.setBody(resp);
} catch (InvocationTargetException e) {
msg.setBody(e.getCause());
}
return msg;
}
public Object invokeTarget(Object payload, final short sequence) throws InvocationTargetException {
try {
return remoteMethod.invoke(proxy, (Object[]) payload);
} catch (IllegalAccessException e) {
// the method we are passed must be accessible
throw new AssertionError(e);
}
}
public Object clone() throws CloneNotSupportedException {
try {
return super.clone();
} catch (CloneNotSupportedException e) {
throw new AssertionError(e);
}
}
public boolean isOptimizable() {
return false;
}
public boolean isCacheable() {
return false;
}
// FIXME I think we can always have this cacheable as OSGi serviceBindings are thread-safe
public void setCacheable(boolean cacheable) {
}
}
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