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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.extension;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import org.apache.tuscany.core.builder.BuilderException;
import org.apache.tuscany.core.builder.ContextFactoryBuilder;
import org.apache.tuscany.core.builder.ContextFactoryBuilderRegistry;
import org.apache.tuscany.core.system.annotation.Autowire;
import org.apache.tuscany.core.wire.TargetWireFactory;
import org.apache.tuscany.core.wire.service.WireFactoryService;
import org.apache.tuscany.model.assembly.AssemblyObject;
import org.apache.tuscany.model.assembly.Binding;
import org.apache.tuscany.model.assembly.ConfiguredService;
import org.apache.tuscany.model.assembly.ExternalService;
import org.apache.tuscany.model.assembly.Service;
import org.osoa.sca.annotations.Init;
/**
* A base class for a {@link ContextFactoryBuilder} that creates {@link org.apache.tuscany.core.context.ExternalServiceContext}s
*
* @version $$Rev$$ $$Date$$
*/
public abstract class ExternalServiceBuilderSupport<T extends Binding> implements ContextFactoryBuilder {
private ContextFactoryBuilderRegistry builderRegistry;
private WireFactoryService wireService;
protected Class bindingClass;
public ExternalServiceBuilderSupport() {
// reflect the generic type of the subclass
Type type = this.getClass().getGenericSuperclass();
if (type instanceof ParameterizedType) {
bindingClass = (Class) ((ParameterizedType) type).getActualTypeArguments()[0];
} else {
throw new AssertionError("Subclasses of " + ContextFactoryBuilderSupport.class.getName() + " must be genericized");
}
}
public ExternalServiceBuilderSupport(WireFactoryService wireService) {
this();
this.wireService = wireService;
}
@Init(eager = true)
public void init() throws Exception {
builderRegistry.register(this);
}
@Autowire
public void setBuilderRegistry(ContextFactoryBuilderRegistry registry) {
builderRegistry = registry;
}
@Autowire
public void setWireService(WireFactoryService wireService) {
this.wireService = wireService;
}
public void build(AssemblyObject object) throws BuilderException {
if (!(object instanceof ExternalService)) {
return;
}
ExternalService externalService = (ExternalService) object;
if (externalService.getBindings().size() < 1) {
// || !(handlesBindingType(externalService.getBindings().get(0)))) {
return;
}
if (!bindingClass.isAssignableFrom(externalService.getBindings().get(0).getClass())) {
return;
}
ExternalServiceContextFactory contextFactory
= createExternalServiceContextFactory(externalService);
ConfiguredService configuredService = externalService.getConfiguredService();
Service service = configuredService.getPort();
TargetWireFactory wireFactory = wireService.createTargetFactory(configuredService);
contextFactory.addTargetWireFactory(service.getName(), wireFactory);
externalService.setContextFactory(contextFactory);
}
/**
* Returns true if an extending implementation can process the given binding element
*/
//protected abstract boolean handlesBindingType(Binding binding);
/**
* Callback to create the specific <code>ContextFactory</code> type associated with the extending
* implementation
*
* @param externalService the external service being processed
*/
protected abstract ExternalServiceContextFactory createExternalServiceContextFactory(ExternalService externalService);
}
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