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/*******************************************************************************
* Copyright (c) 2004, 2007 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.framework.resource.management.internal;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArraySet;
import org.eclipse.osee.framework.core.exception.OseeCoreException;
import org.eclipse.osee.framework.core.exception.OseeStateException;
import org.eclipse.osee.framework.resource.management.IResourceLocator;
import org.eclipse.osee.framework.resource.management.IResourceLocatorManager;
import org.eclipse.osee.framework.resource.management.IResourceLocatorProvider;
import org.eclipse.osee.framework.resource.management.exception.MalformedLocatorException;
/**
* @author Roberto E. Escobar
*/
public class ResourceLocatorManager implements IResourceLocatorManager {
private final Collection<IResourceLocatorProvider> resourceLocatorProviders;
public ResourceLocatorManager() {
this.resourceLocatorProviders = new CopyOnWriteArraySet<IResourceLocatorProvider>();
}
@Override
public Collection<String> getProtocols() {
Set<String> protocols = new HashSet<String>();
for (IResourceLocatorProvider provider : resourceLocatorProviders) {
protocols.add(provider.getSupportedProtocol());
}
return protocols;
}
@Override
public boolean addResourceLocatorProvider(IResourceLocatorProvider resourceLocatorProvider) {
return this.resourceLocatorProviders.add(resourceLocatorProvider);
}
@Override
public boolean removeResourceLocatorProvider(IResourceLocatorProvider resourceLocatorProvider) {
return this.resourceLocatorProviders.remove(resourceLocatorProvider);
}
@Override
public IResourceLocator generateResourceLocator(String protocol, String seed, String name) throws OseeCoreException {
IResourceLocatorProvider resourceLocatorProvider = getProvider(protocol);
return resourceLocatorProvider.generateResourceLocator(seed, name);
}
@Override
public IResourceLocator getResourceLocator(String path) throws OseeCoreException {
IResourceLocatorProvider resourceLocatorProvider = getProvider(path);
return resourceLocatorProvider.getResourceLocator(path);
}
private IResourceLocatorProvider getProvider(String protocol) throws OseeCoreException {
if (resourceLocatorProviders.isEmpty()) {
throw new OseeStateException("Resource locator providers are not available");
}
IResourceLocatorProvider toReturn = null;
for (IResourceLocatorProvider provider : resourceLocatorProviders) {
if (provider.isValid(protocol)) {
toReturn = provider;
break;
}
}
if (toReturn == null) {
throw new MalformedLocatorException("Error finding locator for [%s] in [%s]", protocol,
resourceLocatorProviders);
}
return toReturn;
}
}
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