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/*******************************************************************************
* Copyright (c) 2014 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.jaxrs.server.internal.applications;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import javax.ws.rs.core.Application;
import org.eclipse.osee.jaxrs.server.internal.JaxRsVisitable;
import org.eclipse.osee.jaxrs.server.internal.JaxRsVisitor;
import org.osgi.framework.Bundle;
/**
* @author Roberto E. Escobar
*/
public abstract class AbstractJaxRsApplicationContainer implements JaxRsVisitable {
private final Map<String, JaxRsApplicationEntry> applications =
new ConcurrentHashMap<String, JaxRsApplicationEntry>();
private final String applicationContext;
public AbstractJaxRsApplicationContainer(String applicationContext) {
super();
this.applicationContext = applicationContext;
}
public String getApplicationContext() {
return applicationContext;
}
public void add(String key, Bundle bundle, Application application) {
JaxRsApplicationEntry entry = new JaxRsApplicationEntry(bundle, application);
applications.put(key, entry);
}
public void remove(String key) {
applications.remove(key);
}
public boolean isEmpty() {
return applications.isEmpty();
}
public int size() {
return applications.size();
}
@Override
public void accept(JaxRsVisitor visitor) {
visitor.onStartApplicationContainer(applicationContext, size());
try {
for (Entry<String, JaxRsApplicationEntry> entry : applications.entrySet()) {
String componentName = entry.getKey();
JaxRsApplicationEntry value = entry.getValue();
Bundle bundle = value.getBundle();
Application application = value.getApplication();
visitor.onApplication(applicationContext, componentName, bundle, application);
}
} finally {
visitor.onEndApplicationContainer();
}
}
protected Application getApplication() {
Application toReturn = null;
if (applications.size() > 1) {
toReturn = newCompositeApplication();
} else {
JaxRsApplicationEntry entry = getFirstEntry();
toReturn = entry != null ? entry.getApplication() : null;
}
return toReturn;
}
private JaxRsApplicationEntry getFirstEntry() {
return !applications.isEmpty() ? applications.values().iterator().next() : null;
}
private final Application newCompositeApplication() {
final Set<Class<?>> classes = new LinkedHashSet<>();
final Set<Object> singletons = new LinkedHashSet<>();
for (JaxRsApplicationEntry appEntry : applications.values()) {
Application application = appEntry.getApplication();
classes.addAll(application.getClasses());
singletons.addAll(application.getSingletons());
}
return new Application() {
@Override
public Set<Class<?>> getClasses() {
return classes;
}
@Override
public Set<Object> getSingletons() {
return singletons;
}
};
}
@Override
public String toString() {
return " applicationContext=" + applicationContext;
}
private final class JaxRsApplicationEntry {
private final Bundle bundle;
private final Application application;
public JaxRsApplicationEntry(Bundle bundle, Application application) {
super();
this.bundle = bundle;
this.application = application;
}
public Bundle getBundle() {
return bundle;
}
public Application getApplication() {
return application;
}
}
}
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