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/**
*
* Copyright 2006 The Apache Software Foundation
*
* 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.client;
import java.util.ArrayList;
import java.util.List;
import javax.xml.stream.XMLInputFactory;
import org.apache.tuscany.common.monitor.MonitorFactory;
import org.apache.tuscany.common.resource.ResourceLoader;
import org.apache.tuscany.common.resource.impl.ResourceLoaderImpl;
import org.apache.tuscany.core.builder.ContextFactoryBuilder;
import org.apache.tuscany.core.builder.ContextFactoryBuilderRegistry;
import org.apache.tuscany.core.builder.impl.ContextFactoryBuilderRegistryImpl;
import org.apache.tuscany.core.config.ConfigurationException;
import org.apache.tuscany.core.config.ModuleComponentConfigurationLoader;
import org.apache.tuscany.core.config.impl.StAXModuleComponentConfigurationLoaderImpl;
import org.apache.tuscany.core.context.CompositeContext;
import org.apache.tuscany.core.context.SystemCompositeContext;
import org.apache.tuscany.core.context.event.ModuleStart;
import org.apache.tuscany.core.loader.StAXLoaderRegistry;
import org.apache.tuscany.core.loader.StAXUtil;
import org.apache.tuscany.core.system.assembly.impl.SystemAssemblyFactoryImpl;
import org.apache.tuscany.core.system.builder.SystemContextFactoryBuilder;
import org.apache.tuscany.core.system.builder.SystemEntryPointBuilder;
import org.apache.tuscany.core.system.builder.SystemExternalServiceBuilder;
import org.apache.tuscany.model.assembly.AssemblyFactory;
import org.apache.tuscany.model.assembly.AssemblyContext;
import org.apache.tuscany.model.assembly.ModuleComponent;
import org.apache.tuscany.model.assembly.impl.AssemblyContextImpl;
import org.apache.tuscany.model.assembly.loader.AssemblyModelLoader;
import org.apache.tuscany.model.scdl.loader.impl.SCDLAssemblyModelLoaderImpl;
/**
* @version $Rev$ $Date$
*/
public final class BootstrapHelper {
private BootstrapHelper() {
}
/**
* Returns a default AssemblyModelContext.
*
* @param classLoader the classloader to use for application artifacts
* @return a default AssemblyModelContext
*/
public static AssemblyContext getModelContext(ClassLoader classLoader) {
// Create an assembly model factory
AssemblyFactory modelFactory = new SystemAssemblyFactoryImpl();
// Create a default assembly model loader
AssemblyModelLoader modelLoader = new SCDLAssemblyModelLoaderImpl();
// Create a resource loader from the supplied classloader
ResourceLoader resourceLoader = new ResourceLoaderImpl(classLoader);
// Create an assembly model context
return new AssemblyContextImpl(modelFactory, modelLoader, resourceLoader);
}
/**
* Returns a default list of configuration builders.
*
* @param monitorFactory
* @return a default list of configuration builders
*/
public static List<ContextFactoryBuilder> getBuilders(MonitorFactory monitorFactory) {
List<ContextFactoryBuilder> configBuilders = new ArrayList<ContextFactoryBuilder>();
configBuilders.add((new SystemContextFactoryBuilder(monitorFactory)));
configBuilders.add(new SystemEntryPointBuilder());
configBuilders.add(new SystemExternalServiceBuilder());
return configBuilders;
}
/**
* Returns a ContextFactoryBuilderRegistry with default builders registered for system contexts.
*
* @param monitorFactory a monitorFactory that will be used to obtain monitors for system components
* @return a default ContextFactoryBuilderRegistry
*/
public static ContextFactoryBuilderRegistry bootstrapContextFactoryBuilders(MonitorFactory monitorFactory) {
ContextFactoryBuilderRegistryImpl registry = new ContextFactoryBuilderRegistryImpl();
registry.register(new SystemContextFactoryBuilder(monitorFactory));
registry.register(new SystemEntryPointBuilder());
registry.register(new SystemExternalServiceBuilder());
return registry;
}
public static final String SYSTEM_LOADER_COMPONENT = "tuscany.loader";
/**
* Returns the default module configuration loader.
*
* @param systemContext the runtime's system context
* @param modelContext the model context the loader will use
* @return the default module configuration loader
*/
public static ModuleComponentConfigurationLoader getConfigurationLoader(SystemCompositeContext systemContext, AssemblyContext modelContext) {
return new StAXModuleComponentConfigurationLoaderImpl(modelContext, XMLInputFactory.newInstance(), systemContext.resolveInstance(StAXLoaderRegistry.class));
}
/**
* Bootstrap the StAX-based loader.
*
* @param parentContext the parent system context
* @param modelContext
* @return the system context for the loader
* @throws ConfigurationException
*/
public static CompositeContext bootstrapStaxLoader(SystemCompositeContext parentContext, AssemblyContext modelContext) throws ConfigurationException {
ModuleComponent loaderComponent = StAXUtil.bootstrapLoader(SYSTEM_LOADER_COMPONENT, modelContext);
CompositeContext loaderContext = registerModule(parentContext, loaderComponent);
loaderContext.publish(new ModuleStart(loaderComponent));
return loaderContext;
}
public static CompositeContext registerModule(CompositeContext parent, ModuleComponent component) throws ConfigurationException {
// register the component
parent.registerModelObject(component);
// Get the composite context representing the component
return (CompositeContext) parent.getContext(component.getName());
}
}
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