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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.core.implementation.system.builder;
import java.lang.reflect.Constructor;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Map;
import org.apache.tuscany.spi.ObjectFactory;
import org.apache.tuscany.spi.QualifiedName;
import org.apache.tuscany.spi.builder.BuilderConfigException;
import org.apache.tuscany.spi.component.AtomicComponent;
import org.apache.tuscany.spi.component.CompositeComponent;
import org.apache.tuscany.spi.deployer.DeploymentContext;
import org.apache.tuscany.spi.extension.ComponentBuilderExtension;
import org.apache.tuscany.spi.implementation.java.ConstructorDefinition;
import org.apache.tuscany.spi.implementation.java.JavaMappedProperty;
import org.apache.tuscany.spi.implementation.java.JavaMappedReference;
import org.apache.tuscany.spi.implementation.java.PojoComponentType;
import org.apache.tuscany.spi.model.ComponentDefinition;
import org.apache.tuscany.spi.model.PropertyValue;
import org.apache.tuscany.spi.model.ReferenceDefinition;
import org.apache.tuscany.spi.model.ReferenceTarget;
import org.apache.tuscany.spi.model.ServiceDefinition;
import org.apache.tuscany.spi.wire.OutboundWire;
import org.apache.tuscany.core.implementation.PojoConfiguration;
import org.apache.tuscany.core.implementation.system.component.SystemAtomicComponentImpl;
import org.apache.tuscany.core.implementation.system.model.SystemImplementation;
import org.apache.tuscany.core.implementation.system.wire.SystemInboundWire;
import org.apache.tuscany.core.implementation.system.wire.SystemInboundWireImpl;
import org.apache.tuscany.core.implementation.system.wire.SystemOutboundAutowire;
import org.apache.tuscany.core.implementation.system.wire.SystemOutboundWireImpl;
import org.apache.tuscany.core.injection.MethodEventInvoker;
import org.apache.tuscany.core.injection.PojoObjectFactory;
/**
* Produces system atomic components from a component definition
*
* @version $$Rev$$ $$Date$$
*/
public class SystemComponentBuilder extends ComponentBuilderExtension<SystemImplementation> {
protected Class<SystemImplementation> getImplementationType() {
return SystemImplementation.class;
}
@SuppressWarnings("unchecked")
public AtomicComponent build(CompositeComponent parent,
ComponentDefinition<SystemImplementation> definition,
DeploymentContext deploymentContext) throws BuilderConfigException {
PojoComponentType<ServiceDefinition, JavaMappedReference, JavaMappedProperty<?>> componentType =
definition.getImplementation().getComponentType();
PojoConfiguration configuration = new PojoConfiguration();
configuration.setParent(parent);
configuration.setScopeContainer(deploymentContext.getModuleScope());
if (definition.getInitLevel() != null) {
configuration.setInitLevel(definition.getInitLevel());
} else {
configuration.setInitLevel(componentType.getInitLevel());
}
Method initMethod = componentType.getInitMethod();
if (initMethod != null) {
configuration.setInitInvoker(new MethodEventInvoker<Object>(initMethod));
}
Method destroyMethod = componentType.getDestroyMethod();
if (destroyMethod != null) {
configuration.setDestroyInvoker(new MethodEventInvoker<Object>(destroyMethod));
}
for (ServiceDefinition serviceDefinition : componentType.getServices().values()) {
configuration.addServiceInterface(serviceDefinition.getServiceContract().getInterfaceClass());
}
// setup property injection sites
for (JavaMappedProperty<?> property : componentType.getProperties().values()) {
configuration.addPropertySite(property.getName(), property.getMember());
}
// setup reference injection sites
for (JavaMappedReference reference : componentType.getReferences().values()) {
Member member = reference.getMember();
if (member != null) {
// could be null if the reference is mapped to a constructor
configuration.addReferenceSite(reference.getName(), member);
}
}
// setup constructor injection
ConstructorDefinition<?> ctorDef = componentType.getConstructorDefinition();
Constructor<?> constr = ctorDef.getConstructor();
PojoObjectFactory<?> instanceFactory = new PojoObjectFactory(constr);
configuration.setInstanceFactory(instanceFactory);
configuration.getConstructorParamNames().addAll(ctorDef.getInjectionNames());
SystemAtomicComponentImpl component = new SystemAtomicComponentImpl(definition.getName(), configuration);
// handle properties
Map<String, PropertyValue<?>> propertyValues = definition.getPropertyValues();
processProperties(propertyValues, componentType.getProperties().values(), component);
// handle inbound wires
for (ServiceDefinition serviceDefinition : componentType.getServices().values()) {
Class<?> interfaze = serviceDefinition.getServiceContract().getInterfaceClass();
String name = serviceDefinition.getName();
SystemInboundWire wire = new SystemInboundWireImpl(name, interfaze, component);
component.addInboundWire(wire);
}
// handle references
processReferences(definition, componentType.getReferences(), parent, component);
// FIXME we need a way to build configuration references from autowires in the loader to eliminate this eval
for (ReferenceDefinition reference : componentType.getReferences().values()) {
if (reference.isAutowire()) {
Class interfaze = reference.getServiceContract().getInterfaceClass();
OutboundWire wire =
new SystemOutboundAutowire(reference.getName(), interfaze, parent, reference.isRequired());
component.addOutboundWire(wire);
}
}
return component;
}
private void processReferences(ComponentDefinition<SystemImplementation> definition,
Map<String, JavaMappedReference> references,
CompositeComponent parent,
SystemAtomicComponentImpl component) {
// no proxies needed for system components
for (ReferenceTarget target : definition.getReferenceTargets().values()) {
String referenceName = target.getReferenceName();
JavaMappedReference referenceDefiniton = references.get(referenceName);
Class interfaze = referenceDefiniton.getServiceContract().getInterfaceClass();
OutboundWire wire;
if (referenceDefiniton.isAutowire()) {
boolean required = referenceDefiniton.isRequired();
wire = new SystemOutboundAutowire(referenceName, interfaze, parent, required);
} else {
//FIXME support multiplicity!
assert target.getTargets().size() == 1 : "Multiplicity not yet implemented";
QualifiedName targetName = new QualifiedName(target.getTargets().get(0).getPath());
wire = new SystemOutboundWireImpl(referenceName, targetName, interfaze);
}
component.addOutboundWire(wire);
}
}
private void processProperties(Map<String, PropertyValue<?>> propertyValues,
Collection<JavaMappedProperty<?>> properties,
SystemAtomicComponentImpl component) {
for (JavaMappedProperty<?> property : properties) {
PropertyValue value = propertyValues.get(property.getName());
ObjectFactory<?> factory;
if (value != null) {
factory = value.getValueFactory();
} else {
factory = property.getDefaultValueFactory();
}
if (factory != null) {
component.addPropertyFactory(property.getName(), factory);
}
}
}
}
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