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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.sca.core.scope.impl;
import org.apache.tuscany.sca.core.factory.InstanceWrapper;
import org.apache.tuscany.sca.core.scope.AbstractScopeContainer;
import org.apache.tuscany.sca.core.scope.Scope;
import org.apache.tuscany.sca.core.scope.TargetDestructionException;
import org.apache.tuscany.sca.core.scope.TargetNotFoundException;
import org.apache.tuscany.sca.core.scope.TargetResolutionException;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
import org.oasisopen.sca.ServiceUnavailableException;
/**
* A scope context which manages atomic component instances keyed by composite
*
* @version $Rev$ $Date$
*/
public class CompositeScopeContainer<KEY> extends AbstractScopeContainer<KEY> {
private InstanceWrapper<?> wrapper;
public CompositeScopeContainer(RuntimeComponent component) {
super(Scope.COMPOSITE, component);
}
@Override
public synchronized void stop() {
super.stop();
if (wrapper != null) {
try {
wrapper.stop();
} catch (TargetDestructionException e) {
wrapper = null;
throw new IllegalStateException(e);
}
}
wrapper = null;
}
@Override
public synchronized InstanceWrapper getWrapper(KEY contextId) throws TargetResolutionException {
if (wrapper == null) {
try {
wrapper = createInstanceWrapper();
wrapper.start();
} catch (Exception e) {
wrapper = null;
throw new ServiceUnavailableException(e);
}
}
return wrapper;
}
@Override
public InstanceWrapper getAssociatedWrapper(KEY contextId) throws TargetResolutionException {
if (wrapper == null) {
throw new TargetNotFoundException(component.getURI());
}
return wrapper;
}
@Override
public synchronized void start() {
super.start();
if (isEagerInit()) {
try {
getWrapper(null);
} catch (TargetResolutionException e) {
throw new IllegalStateException(e);
}
}
}
}
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