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/**
*
* Copyright 2005 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.core.context.impl;
import org.apache.tuscany.core.builder.ObjectFactory;
import org.apache.tuscany.core.context.QualifiedName;
import org.apache.tuscany.core.context.TargetException;
import org.apache.tuscany.core.context.CoreRuntimeException;
import org.apache.tuscany.core.context.ExternalServiceContext;
import org.apache.tuscany.core.wire.ProxyCreationException;
import org.apache.tuscany.core.wire.TargetWireFactory;
/**
* The default implementation of an external service context
*
* @version $Rev$ $Date$
*/
public class ExternalServiceContextImpl extends AbstractContext implements ExternalServiceContext {
private TargetWireFactory<?> targetWireFactory;
private ObjectFactory targetInstanceFactory;
/**
* Creates an external service context
*
* @param name the name of the external service
* @param targetWireFactory the factory which creates proxies implementing the configured service interface for the
* external service. There is always only one proxy factory as an external service is configured with one
* service
* @param targetInstanceFactory the object factory that creates an artifact capabile of communicating over the
* binding transport configured on the external service. The object factory may implement a caching strategy.
*/
public ExternalServiceContextImpl(String name, TargetWireFactory targetWireFactory, ObjectFactory targetInstanceFactory) {
super(name);
assert (targetInstanceFactory != null) : "Target instance factory was null";
this.targetWireFactory = targetWireFactory;
this.targetInstanceFactory = targetInstanceFactory;
}
public void start() throws CoreRuntimeException {
lifecycleState = RUNNING;
}
public void stop() throws CoreRuntimeException {
lifecycleState = STOPPED;
}
public Object getInstance(QualifiedName qName) throws TargetException {
try {
return targetWireFactory.createProxy();
// TODO do we cache the proxy, (assumes stateful capabilities will be provided in an interceptor)
} catch (ProxyCreationException e) {
TargetException te = new TargetException(e);
te.addContextName(getName());
throw te;
}
}
public Object getHandler() throws TargetException {
return targetInstanceFactory.getInstance();
}
}
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