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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.assembly.builder.impl;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.tuscany.sca.assembly.AssemblyFactory;
import org.apache.tuscany.sca.assembly.Component;
import org.apache.tuscany.sca.assembly.ComponentReference;
import org.apache.tuscany.sca.assembly.ComponentService;
import org.apache.tuscany.sca.assembly.Composite;
import org.apache.tuscany.sca.assembly.CompositeReference;
import org.apache.tuscany.sca.assembly.CompositeService;
import org.apache.tuscany.sca.assembly.Implementation;
import org.apache.tuscany.sca.assembly.Reference;
import org.apache.tuscany.sca.assembly.Service;
import org.apache.tuscany.sca.assembly.builder.CompositeBuilder;
import org.apache.tuscany.sca.assembly.builder.CompositeBuilderException;
import org.apache.tuscany.sca.definitions.Definitions;
import org.apache.tuscany.sca.interfacedef.InterfaceContract;
import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
import org.apache.tuscany.sca.monitor.Monitor;
/**
* A composite builder that makes the connections between composite services and references
* and the services and references that they promote
*
* @version $Rev$ $Date$
*/
public class CompositePromotionBuilderImpl extends BaseBuilderImpl implements CompositeBuilder {
public CompositePromotionBuilderImpl(AssemblyFactory assemblyFactory, InterfaceContractMapper interfaceContractMapper) {
super(assemblyFactory, null, null, null, interfaceContractMapper);
}
public String getID() {
return "org.apache.tuscany.sca.assembly.builder.CompositePromotionBuilder";
}
public void build(Composite composite, Definitions definitions, Monitor monitor) throws CompositeBuilderException {
connectCompositeReferencesAndServices(composite, monitor);
}
/**
* Connect composite references and services to the reference and services that they promote.
*
* @param composite
* @param componentServices
* @param problems
*/
protected void connectCompositeReferencesAndServices(Composite composite, Monitor monitor){
// Wire nested composites recursively
for (Component component : composite.getComponents()) {
Implementation implementation = component.getImplementation();
if (implementation instanceof Composite) {
connectCompositeReferencesAndServices((Composite)implementation, monitor);
}
}
// Index components, services and references
Map<String, Component> components = new HashMap<String, Component>();
Map<String, ComponentService> componentServices = new HashMap<String, ComponentService>();
Map<String, ComponentReference> componentReferences = new HashMap<String, ComponentReference>();
indexComponentsServicesAndReferences(composite, components, componentServices, componentReferences);
// Connect composite services and references to the component
// services and references that they promote
connectCompositeServices(composite, components, componentServices, monitor);
connectCompositeReferences(composite, components, componentReferences, monitor);
}
/**
* Connect composite services to the component services that they promote.
*
* @param composite
* @param componentServices
* @param problems
*/
private void connectCompositeServices(Composite composite,
Map<String, Component> components,
Map<String, ComponentService> componentServices,
Monitor monitor) {
// Propagate interfaces from inner composite components' services to
// their component services
for (Component component : composite.getComponents()) {
if (component.getImplementation() instanceof Composite) {
for (ComponentService componentService : component.getServices()) {
Service service = componentService.getService();
if (service != null) {
if (componentService.getInterfaceContract() == null) {
componentService.setInterfaceContract(service.getInterfaceContract());
}
}
}
}
}
// Connect composite services to the component services that they promote
for (Service service : composite.getServices()) {
CompositeService compositeService = (CompositeService)service;
ComponentService componentService = compositeService.getPromotedService();
if (componentService != null && componentService.isUnresolved()) {
String promotedComponentName = compositeService.getPromotedComponent().getName();
String promotedServiceName;
if (componentService.getName() != null) {
if( compositeService.isCallback() ) {
// For callbacks the name already has the form "componentName"/"servicename"
promotedServiceName = componentService.getName();
} else {
promotedServiceName = promotedComponentName + '/' + componentService.getName();
}
} else {
promotedServiceName = promotedComponentName;
}
ComponentService promotedService = componentServices.get(promotedServiceName);
if (promotedService != null) {
// Point to the resolved component
Component promotedComponent = components.get(promotedComponentName);
compositeService.setPromotedComponent(promotedComponent);
// Point to the resolved component service
compositeService.setPromotedService(promotedService);
// Use the interface contract from the component service if
// none is specified on the composite service
InterfaceContract compositeServiceInterfaceContract = compositeService.getInterfaceContract();
InterfaceContract promotedServiceInterfaceContract = promotedService.getInterfaceContract();
if (compositeServiceInterfaceContract == null) {
compositeService.setInterfaceContract(promotedServiceInterfaceContract);
} else if (promotedServiceInterfaceContract != null) {
// Check the compositeServiceInterfaceContract and promotedServiceInterfaceContract
boolean isCompatible = interfaceContractMapper.isCompatible(compositeServiceInterfaceContract, promotedServiceInterfaceContract);
if(!isCompatible){
warning(monitor, "ServiceInterfaceNotSubSet", compositeService, promotedServiceName);
}
}
} else {
// MJE 15/05/2005 - Priority raised from "warning" to "error" to fix TUSCANY-3034
error(monitor, "PromotedServiceNotFound", composite, composite.getName().toString(), promotedServiceName);
}
}
}
}
/**
* Resolves promoted references.
*
* @param composite
* @param componentReferences
* @param problems
*/
private void connectCompositeReferences(Composite composite,
Map<String, Component> components,
Map<String, ComponentReference> componentReferences, Monitor monitor) {
// Propagate interfaces from inner composite components' references to
// their component references
for (Component component : composite.getComponents()) {
if (component.getImplementation() instanceof Composite) {
for (ComponentReference componentReference : component.getReferences()) {
Reference reference = componentReference.getReference();
if (reference != null) {
if (componentReference.getInterfaceContract() == null) {
componentReference.setInterfaceContract(reference.getInterfaceContract());
}
}
}
}
}
// Connect composite references to the component references that they promote
for (Reference reference : composite.getReferences()) {
CompositeReference compositeReference = (CompositeReference)reference;
List<ComponentReference> promotedReferences = compositeReference.getPromotedReferences();
for (int i = 0, n = promotedReferences.size(); i < n; i++) {
ComponentReference componentReference = promotedReferences.get(i);
if (componentReference.isUnresolved()) {
String componentReferenceName = componentReference.getName();
componentReference = componentReferences.get(componentReferenceName);
if (componentReference != null) {
// Set the promoted component
Component promotedComponent = compositeReference.getPromotedComponents().get(i);
promotedComponent = components.get(promotedComponent.getName());
compositeReference.getPromotedComponents().set(i, promotedComponent);
componentReference.setPromoted( true );
// Point to the resolved component reference
promotedReferences.set(i, componentReference);
// Use the interface contract from the component reference if none
// is specified on the composite reference
InterfaceContract compositeReferenceInterfaceContract = compositeReference.getInterfaceContract();
InterfaceContract componentReferenceInterfaceContract = componentReference.getInterfaceContract();
if (compositeReferenceInterfaceContract == null) {
compositeReference.setInterfaceContract(componentReferenceInterfaceContract);
} else if (componentReferenceInterfaceContract != null) {
// Check that the componentInterfaceContract is a subset of the compositeInterfaceContract
boolean isCompatible = interfaceContractMapper.isCompatible( componentReferenceInterfaceContract, compositeReferenceInterfaceContract);
if (!isCompatible) {
warning(monitor, "ReferenceInterfaceNotSubSet", compositeReference, componentReferenceName);
}
}
} else {
warning(monitor, "PromotedReferenceNotFound", composite, composite.getName().toString(), componentReferenceName);
}
}
}
}
}
}
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