org.eclipse.core.internal.preferences.BundleStateScope Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2022 Christoph Läubrich and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Christoph Läubrich - initial API and implementation
*******************************************************************************/
package org.eclipse.core.internal.preferences;
import org.eclipse.core.internal.runtime.MetaDataKeeper;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.preferences.*;
import org.osgi.framework.Bundle;
/**
* The Bundle State Scope supply bundles with two items:
*
* - {@link #getNode(String)} returns a node for the bundle workspace
* preferences
* - {@link #getLocation()} returns the state location of the bundle that
* acquires the service
*
* The service could be acquired for example with declarative services the
* following way:
*
*
* @Reference(target = "(type=bundle)")
* private IScopeContext scopeContext;
*
*/
public class BundleStateScope implements IScopeContext {
private IPath bundleLocation;
private final Bundle usingBundle;
public BundleStateScope(Bundle usingBundle) {
this.usingBundle = usingBundle;
}
@Override
public String getName() {
return InstanceScope.INSTANCE.getName() + "/" + usingBundle.getSymbolicName(); //$NON-NLS-1$
}
@Override
public IEclipsePreferences getNode(String qualifier) {
return (IEclipsePreferences) InstanceScope.INSTANCE.getNode(usingBundle.getSymbolicName()).node(qualifier);
}
@Override
public synchronized IPath getLocation() {
if (bundleLocation == null) {
bundleLocation = MetaDataKeeper.getMetaArea().getStateLocation(usingBundle);
bundleLocation.toFile().mkdirs();
}
return bundleLocation;
}
}