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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.model.scdl.loader.impl;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.wsdl.Definition;
import javax.wsdl.WSDLException;
import javax.wsdl.factory.WSDLFactory;
import javax.wsdl.xml.WSDLReader;
import org.apache.tuscany.common.resource.ResourceLoader;
import org.apache.tuscany.model.assembly.AssemblyModelContext;
import org.apache.tuscany.model.assembly.ComponentType;
import org.apache.tuscany.model.assembly.Module;
import org.apache.tuscany.model.assembly.ModuleFragment;
import org.apache.tuscany.model.assembly.Subsystem;
import org.apache.tuscany.model.assembly.loader.AssemblyModelLoader;
import org.apache.tuscany.model.scdl.loader.SCDLModelLoader;
import org.apache.tuscany.model.util.ModelTransformer;
import org.apache.tuscany.model.util.ModelTransformerImpl;
import org.eclipse.emf.ecore.util.EcoreUtil;
/**
*/
public class SCDLAssemblyModelLoaderImpl implements AssemblyModelLoader {
private SCDLXMLReader xmlReader=new SCDLXMLReader();
private WSDLReader wsdlReader;
private AssemblyModelContext modelContext;
private List<SCDLModelLoader> scdlModelLoaders;
private Map<String, ComponentType> componentTypes=new HashMap<String, ComponentType>();
private Map<String, Module> modules=new HashMap<String, Module>();
private Map<String, ModuleFragment> moduleFragments=new HashMap<String, ModuleFragment>();
private Map<String, Subsystem> subsystems=new HashMap<String, Subsystem>();
private Map<String, Definition> definitions=new HashMap<String, Definition>();
private Map<String, List<Definition>> definitionsByNamespace=new HashMap<String, List<Definition>>();
/**
* Constructor
*/
public SCDLAssemblyModelLoaderImpl(List<SCDLModelLoader> loaders) {
scdlModelLoaders=loaders!=null? loaders:new ArrayList<SCDLModelLoader>();
}
/**
* @param modelContext The modelContext to set.
*/
public void setModelContext(AssemblyModelContext modelContext) {
this.modelContext = modelContext;
}
/**
* @see org.apache.tuscany.model.assembly.loader.AssemblyModelLoader#loadComponentType(java.lang.String)
*/
public ComponentType loadComponentType(String uri) {
ComponentType componentType=componentTypes.get(uri);
if (componentType!=null)
return componentType;
// Load the SCDL component type
org.apache.tuscany.model.scdl.ComponentType scdlComponentType=xmlReader.getComponentType(uri);
// Transform it to an assembly component type
componentType=transform(scdlComponentType).getComponentType();
componentTypes.put(uri, componentType);
return componentType;
}
/**
* @see org.apache.tuscany.model.assembly.loader.AssemblyModelLoader#loadModule(java.lang.String)
*/
public Module loadModule(String uri) {
Module module=modules.get(uri);
if (module!=null)
return module;
// Load the SCDL module
org.apache.tuscany.model.scdl.Module scdlModule=xmlReader.getModule(uri);
// Transform it to an assembly module
module=transform(scdlModule).getModule();
modules.put(uri, module);
return module;
}
/**
* @see org.apache.tuscany.model.assembly.loader.AssemblyModelLoader#loadModuleFragment(java.lang.String)
*/
public ModuleFragment loadModuleFragment(String uri) {
ModuleFragment moduleFragment=moduleFragments.get(uri);
if (moduleFragment!=null)
return moduleFragment;
// Load the SCDL module fragment
org.apache.tuscany.model.scdl.ModuleFragment scdlFragment=xmlReader.getModuleFragment(uri);
// Transform it to an assembly module fragment
moduleFragment=transform(scdlFragment).getModuleFragment();
moduleFragments.put(uri, moduleFragment);
return moduleFragment;
}
/**
* @see org.apache.tuscany.model.assembly.loader.AssemblyModelLoader#loadSubsystem(java.lang.String)
*/
public Subsystem loadSubsystem(String uri) {
Subsystem subsystem=subsystems.get(uri);
if (subsystem!=null)
return subsystem;
// Load the SCDL subsystem
org.apache.tuscany.model.scdl.Subsystem scdlSubsystem=xmlReader.getSubsystem(uri);
subsystem=transform(scdlSubsystem).getSubsystem();
subsystems.put(uri, subsystem);
return subsystem;
}
/**
* @see org.apache.tuscany.model.assembly.loader.AssemblyModelLoader#loadDefinition(java.lang.String)
*/
public Definition loadDefinition(String uri) {
Definition definition=definitions.get(uri);
if (definition!=null)
return definition;
try {
if (wsdlReader==null)
wsdlReader=WSDLFactory.newInstance().newWSDLReader();
definition = wsdlReader.readWSDL(uri);
} catch (WSDLException e) {
throw new IllegalArgumentException(e);
}
if (definition==null)
throw new IllegalArgumentException("Could not load WSDL definition at "+uri);
definitions.put(uri, definition);
String namespace=definition.getTargetNamespace();
List<Definition> list=definitionsByNamespace.get(namespace);
if (list==null) {
list=new ArrayList<Definition>();
definitionsByNamespace.put(namespace, list);
}
list.add(definition);
return definition;
}
/**
* @see org.apache.tuscany.model.assembly.loader.AssemblyModelLoader#loadDefinitions(java.lang.String)
*/
public List<Definition> loadDefinitions(String namespace) {
return definitionsByNamespace.get(namespace);
}
/**
* Transform a model and return the handler containing the result of the transformation.
* @param object
* @return
*/
private SCDLModelContentHandlerImpl transform(Object object) {
//FIXME Remove this dependency on EMF
Iterator contents=EcoreUtil.getAllContents(Collections.singleton(object), true);
ModelTransformer transformer=new ModelTransformerImpl();
SCDLModelContentHandlerImpl handler=new SCDLModelContentHandlerImpl(modelContext, scdlModelLoaders);
transformer.transform(contents, handler);
return handler;
}
}
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