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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.interfacedef.java;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.util.Collection;
import java.util.List;
import java.util.logging.Logger;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
import org.apache.tuscany.sca.interfacedef.java.impl.JavaInterfaceFactoryImpl;
import org.apache.tuscany.sca.interfacedef.java.introspect.JavaInterfaceVisitor;
/**
* A factory for the Java interface model.
*
* @version $Rev$ $Date$
* @tuscany.spi.extension.asclient
*/
public class DefaultJavaInterfaceFactory extends JavaInterfaceFactoryImpl implements JavaInterfaceFactory {
private static final Logger logger = Logger.getLogger(DefaultJavaInterfaceFactory.class.getName());
private ExtensionPointRegistry registry;
// private Monitor monitor = null;
private boolean loadedVisitors;
public DefaultJavaInterfaceFactory(ExtensionPointRegistry registry) {
super();
this.registry = registry;
}
@Override
public List<JavaInterfaceVisitor> getInterfaceVisitors() {
loadVisitors();
return super.getInterfaceVisitors();
}
/**
* Load visitors declared under META-INF/services
*/
@SuppressWarnings("unchecked")
private synchronized void loadVisitors() {
if (loadedVisitors)
return;
// Get the databinding service declarations
Collection<ServiceDeclaration> visitorDeclarations;
try {
visitorDeclarations = registry.getServiceDiscovery().getServiceDeclarations(JavaInterfaceVisitor.class, true);
} catch (IOException e) {
throw new IllegalStateException(e);
}
// Load data bindings
for (ServiceDeclaration visitorDeclaration: visitorDeclarations) {
JavaInterfaceVisitor visitor = null;
try {
Class<JavaInterfaceVisitor> visitorClass = (Class<JavaInterfaceVisitor>)visitorDeclaration.loadClass();
try {
Constructor<JavaInterfaceVisitor> constructor = visitorClass.getConstructor(ExtensionPointRegistry.class);
visitor = constructor.newInstance(registry);
} catch (NoSuchMethodException e) {
visitor = visitorClass.newInstance();
}
} catch (Exception e) {
IllegalStateException ie = new IllegalStateException(e);
throw ie;
}
logger.fine("Adding Java Interface visitor: " + visitor.getClass().getName());
addInterfaceVisitor(visitor);
}
loadedVisitors = true;
}
}
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