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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.system.injection;
import org.apache.tuscany.core.builder.ContextResolver;
import org.apache.tuscany.core.builder.ObjectFactory;
import org.apache.tuscany.core.context.CompositeContext;
import org.apache.tuscany.core.context.AutowireContext;
import org.apache.tuscany.core.injection.FactoryInitException;
import org.apache.tuscany.core.injection.ObjectCreationException;
/**
* Returns an instance by resolving against an AutowireContext.
*
* @version $Rev: 385139 $ $Date: 2006-03-11 11:03:11 -0800 (Sat, 11 Mar 2006) $
*/
public class AutowireObjectFactory<T> implements ObjectFactory<T> {
private ContextResolver resolver;
private Class<T> autowireType;
/**
*
* @throws FactoryInitException
*/
public AutowireObjectFactory(Class<T> autowireType,ContextResolver resolver) {
assert (autowireType != null) : "Target interface was null";
this.resolver = resolver;
this.autowireType = autowireType;
}
/**
* Creates a new factory that resolves against the cuurent context using the given implementation type
*
* @throws FactoryInitException
*/
public AutowireObjectFactory(Class<T> implementationType) {
this(implementationType, null);
}
public T getInstance() throws ObjectCreationException {
CompositeContext parent = resolver.getCurrentContext();
if (parent == null) {
return null;// FIXME semantic here means required is not followed
}
if (!(parent instanceof AutowireContext)) {
ObjectCreationException e = new ObjectCreationException("Parent does not implement "
+ AutowireContext.class.getName());
e.setIdentifier(parent.getName());
throw e;
}
AutowireContext ctx = (AutowireContext) parent;
return ctx.resolveInstance(autowireType);
}
public void setContextResolver(ContextResolver resolver) {
this.resolver = resolver;
}
}
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