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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.config.impl;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import org.apache.tuscany.common.resource.ResourceLoader;
import org.apache.tuscany.core.config.ConfigurationLoadException;
import org.apache.tuscany.core.config.ModuleComponentConfigurationLoader;
import org.apache.tuscany.model.assembly.AssemblyFactory;
import org.apache.tuscany.model.assembly.AssemblyModelContext;
import org.apache.tuscany.model.assembly.Module;
import org.apache.tuscany.model.assembly.ModuleComponent;
import org.apache.tuscany.model.assembly.ModuleFragment;
import org.apache.tuscany.model.assembly.loader.AssemblyModelLoader;
/**
*/
public class ModuleComponentConfigurationLoaderImpl implements ModuleComponentConfigurationLoader {
private static final String SCA_MODULE_FILE_NAME = "sca.module";
//FIXME can fragments have a variable prefix name?
private static final String SCA_FRAGMENT_FILE_NAME = "sca.fragment";
private static final String SYSTEM_MODULE_FILE_NAME = "system.module";
//FIXME can fragments have a variable prefix name?
private static final String SYSTEM_FRAGMENT_FILE_NAME = "system.fragment";
private AssemblyModelContext modelContext;
private ResourceLoader resourceLoader;
private AssemblyFactory assemblyFactory;
private AssemblyModelLoader modelLoader;
/**
* Constructor
*/
public ModuleComponentConfigurationLoaderImpl(AssemblyModelContext modelContext) {
this.modelContext=modelContext;
this.modelLoader=this.modelContext.getAssemblyLoader();
this.assemblyFactory=this.modelContext.getAssemblyFactory();
this.resourceLoader=this.modelContext.getApplicationResourceLoader();
}
/**
* @see org.apache.tuscany.model.assembly.loader.AssemblyModelLoader#loadModuleComponent(java.lang.String, java.lang.String)
*/
public ModuleComponent loadSystemModuleComponent(String name, String uri) throws ConfigurationLoadException {
return loadModuleComponent(SYSTEM_MODULE_FILE_NAME, SYSTEM_FRAGMENT_FILE_NAME, name, uri);
}
/**
* @see org.apache.tuscany.model.assembly.loader.AssemblyModelLoader#loadModuleComponent(java.lang.String, java.lang.String)
*/
public ModuleComponent loadModuleComponent(String name, String uri) throws ConfigurationLoadException {
return loadModuleComponent(SCA_MODULE_FILE_NAME, SCA_FRAGMENT_FILE_NAME, name, uri);
}
/**
* Load a module component.
*/
private ModuleComponent loadModuleComponent(String moduleFileName, String fragmentFileName, String name, String uri) throws ConfigurationLoadException {
// Load the sca.module file
URL moduleUrl;
try {
moduleUrl = resourceLoader.getResource(moduleFileName);
} catch (IOException e) {
throw new ConfigurationLoadException(moduleFileName, e);
}
if (moduleUrl == null) {
throw new ConfigurationLoadException(moduleFileName);
}
String moduleUri=moduleUrl.toString();
// Load the sca.fragment files
Iterator<URL> i;
try {
i = resourceLoader.getAllResources(fragmentFileName);
} catch (IOException e) {
throw new ConfigurationLoadException(fragmentFileName, e);
}
List<String> moduleFragmentUris=new ArrayList<String>();
for (; i.hasNext(); ) {
URL url=i.next();
moduleFragmentUris.add(url.toString());
}
return loadModuleComponent(name, uri, moduleUri, moduleFragmentUris);
}
/**
* @see org.apache.tuscany.core.config.ModuleComponentConfigurationLoader#loadModuleComponent(java.lang.String, java.lang.String, java.lang.String)
*/
public ModuleComponent loadModuleComponent(String name, String uri, String url) throws ConfigurationLoadException {
return loadModuleComponent( name, uri, url, (Collection)null);
}
/**
* @see org.apache.tuscany.core.config.ModuleComponentConfigurationLoader#loadModuleComponent(java.lang.String, java.lang.String, java.lang.String, java.util.Collection)
*/
public ModuleComponent loadModuleComponent(String name, String uri, String moduleUri, Collection<String> moduleFragmentUris) throws ConfigurationLoadException {
// Load the module file
Module module=modelLoader.loadModule(moduleUri);
// Load the sca.fragment files
if (moduleFragmentUris!=null) {
for (String moduleFragmentUri : moduleFragmentUris) {
ModuleFragment moduleFragment=modelLoader.loadModuleFragment(moduleFragmentUri);
module.getModuleFragments().add(moduleFragment);
}
}
// Create the module component
ModuleComponent moduleComponent=assemblyFactory.createModuleComponent();
moduleComponent.setName(name);
moduleComponent.setURI(uri);
moduleComponent.setComponentImplementation(module);
moduleComponent.initialize(modelContext);
return moduleComponent;
}
}
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