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/*
* 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.tuscany.extension.script;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import org.apache.tuscany.spi.ObjectCreationException;
import org.apache.tuscany.spi.ObjectFactory;
import org.apache.tuscany.spi.component.TargetResolutionException;
import org.apache.tuscany.spi.wire.ChainHolder;
import org.apache.tuscany.spi.wire.Wire;
import org.apache.tuscany.spi.wire.ProxyService;
/**
* Uses a wire to return an object instance
* @Deprecated
*
* @version $Rev$ $Date$
*/
public class WireObjectFactory<T> implements ObjectFactory<T> {
private Class<T> interfaze;
private Wire wire;
private ProxyService proxyService;
// the cache of proxy interface method to operation mappings
private Map<Method, ChainHolder> mappings;
private boolean optimizable;
/**
* Constructor.
*
* @param interfaze the interface to inject on the client
* @param wire the backing wire
* @param proxyService the wire service to create the proxy
* @throws NoMethodForOperationException
*/
public WireObjectFactory(Class<T> interfaze, Wire wire, ProxyService proxyService)
{
this.interfaze = interfaze;
this.wire = wire;
this.proxyService = proxyService;
this.mappings = WireUtils.createInterfaceToWireMapping(interfaze, wire); // TODO
if (wire.isOptimizable()
&& wire.getSourceContract().getInterfaceClass() != null
&& interfaze.isAssignableFrom(wire.getSourceContract().getInterfaceClass())) {
optimizable = true;
}
}
public T getInstance() throws ObjectCreationException {
if (optimizable) {
try {
return interfaze.cast(wire.getTargetInstance());
} catch (TargetResolutionException e) {
throw new ObjectCreationException(e);
}
} else {
// clone the cached mappings
Map<Method, ChainHolder> newChains = new HashMap<Method, ChainHolder>(mappings.size());
for (Map.Entry<Method, ChainHolder> entry : mappings.entrySet()) {
newChains.put(entry.getKey(), entry.getValue().clone());
}
return interfaze.cast(proxyService.createProxy(interfaze, wire, newChains));
}
}
}
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