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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.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArraySet;
import org.eclipse.osee.framework.core.exception.OseeNotFoundException;
import org.eclipse.osee.framework.jdk.core.type.OseeCoreException;
import org.eclipse.osee.framework.jdk.core.type.PropertyStore;
import org.eclipse.osee.framework.resource.management.IResource;
import org.eclipse.osee.framework.resource.management.IResourceListener;
import org.eclipse.osee.framework.resource.management.IResourceLocator;
import org.eclipse.osee.framework.resource.management.IResourceLocatorProvider;
import org.eclipse.osee.framework.resource.management.IResourceManager;
import org.eclipse.osee.framework.resource.management.IResourceProvider;
/**
* @author Roberto E. Escobar
*/
public class ResourceManager implements IResourceManager {
private final Collection<IResourceListener> listeners;
private final Collection<IResourceProvider> resourceProviders;
private final Collection<IResourceLocatorProvider> resourceLocatorProviders;
public ResourceManager() {
this.listeners = new CopyOnWriteArraySet<IResourceListener>();
this.resourceProviders = new CopyOnWriteArraySet<IResourceProvider>();
this.resourceLocatorProviders = new CopyOnWriteArraySet<IResourceLocatorProvider>();
}
@Override
public boolean addResourceListener(IResourceListener listener) {
return listeners.add(listener);
}
@Override
public boolean removeResourceListener(IResourceListener listener) {
return listeners.remove(listener);
}
private void notifyPreOnDelete(final IResourceLocator locator) {
for (IResourceListener listener : listeners) {
listener.onPreDelete(locator);
}
}
private void notifyPostOnDelete(final IResourceLocator locator) {
for (IResourceListener listener : listeners) {
listener.onPostDelete(locator);
}
}
private void notifyPreOnSave(final IResourceLocator locator, IResource resource, PropertyStore options) {
for (IResourceListener listener : listeners) {
listener.onPreSave(locator, resource, options);
}
}
private void notifyPostOnSave(IResourceLocator locator, final IResource resource, PropertyStore options) {
for (IResourceListener listener : listeners) {
listener.onPostSave(locator, resource, options);
}
}
private void notifyPreOnAcquire(final IResourceLocator locator) {
for (IResourceListener listener : listeners) {
listener.onPreAcquire(locator);
}
}
private void notifyPostOnAcquire(final IResource resource) {
for (IResourceListener listener : listeners) {
listener.onPostAcquire(resource);
}
}
private IResourceProvider getProvider(IResourceLocator locator) throws OseeCoreException {
for (IResourceProvider provider : resourceProviders) {
if (provider.isValid(locator)) {
return provider;
}
}
throw new OseeNotFoundException("No resource provider found for Locator: [%s]. Searched providers: [%s]",
locator, Arrays.deepToString(resourceProviders.toArray()));
}
public boolean addResourceProvider(IResourceProvider resourceProvider) {
return resourceProviders.add(resourceProvider);
}
public boolean removeResourceProvider(IResourceProvider resourceProvider) {
return resourceProviders.remove(resourceProvider);
}
@Override
public IResource acquire(IResourceLocator locator, PropertyStore options) throws OseeCoreException {
IResourceProvider provider = getProvider(locator);
notifyPreOnAcquire(locator);
IResource toReturn = provider.acquire(locator, options);
notifyPostOnAcquire(toReturn);
return toReturn;
}
@Override
public IResourceLocator save(IResourceLocator locator, IResource resource, PropertyStore options) throws OseeCoreException {
IResourceProvider provider = getProvider(locator);
notifyPreOnSave(locator, resource, options);
IResourceLocator actualLocator = provider.save(locator, resource, options);
notifyPostOnSave(locator, resource, options);
return actualLocator;
}
@Override
public int delete(IResourceLocator locator) throws OseeCoreException {
int toReturn = IResourceManager.FAIL;
IResourceProvider provider = getProvider(locator);
notifyPreOnDelete(locator);
toReturn = provider.delete(locator);
notifyPostOnDelete(locator);
return toReturn;
}
@Override
public boolean exists(IResourceLocator locator) throws OseeCoreException {
IResourceProvider provider = getProvider(locator);
return provider.exists(locator);
}
@Override
public Collection<String> getProtocols() {
Set<String> protocols = new HashSet<String>();
for (IResourceLocatorProvider provider : resourceLocatorProviders) {
protocols.add(provider.getSupportedProtocol());
}
return protocols;
}
public boolean addResourceLocatorProvider(IResourceLocatorProvider resourceLocatorProvider) {
return this.resourceLocatorProviders.add(resourceLocatorProvider);
}
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 {
for (IResourceLocatorProvider provider : resourceLocatorProviders) {
if (provider.isValid(protocol)) {
return provider;
}
}
throw new OseeNotFoundException("No locator proivder found for [%s]. Searched providers: [%s]", protocol,
Arrays.deepToString(resourceLocatorProviders.toArray()));
}
}
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