bundles/org.eclipse.osgi/resolver/src/org/eclipse/osgi/internal/resolver/VersionConstraintImpl.java

/*******************************************************************************
 * Copyright (c) 2003, 2008 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *     Danail Nachev -  ProSyst - bug 218625
 *     Rob Harrop - SpringSource Inc. (bug 247522)
 *******************************************************************************/
package org.eclipse.osgi.internal.resolver;

import org.eclipse.osgi.framework.internal.core.Constants;
import org.eclipse.osgi.service.resolver.*;

abstract class VersionConstraintImpl implements VersionConstraint {

	protected final Object monitor = new Object();

	private String name;
	private VersionRange versionRange;
	private BundleDescription bundle;
	private BaseDescription supplier;

	public String getName() {
		synchronized (this.monitor) {
			if (Constants.SYSTEM_BUNDLE_SYMBOLICNAME.equals(name)) {
				StateImpl state = (StateImpl) getBundle().getContainingState();
				return state == null ? Constants.getInternalSymbolicName() : state.getSystemBundle();
			}
			return name;
		}
	}

	public VersionRange getVersionRange() {
		synchronized (this.monitor) {
			if (versionRange == null)
				return VersionRange.emptyRange;
			return versionRange;
		}
	}

	public BundleDescription getBundle() {
		synchronized (this.monitor) {
			return bundle;
		}
	}

	public boolean isResolved() {
		synchronized (this.monitor) {
			return supplier != null;
		}
	}

	public BaseDescription getSupplier() {
		synchronized (this.monitor) {
			return supplier;
		}
	}

	public boolean isSatisfiedBy(BaseDescription supplier) {
		synchronized (this.monitor) {
			return false;
		}
	}

	protected void setName(String name) {
		synchronized (this.monitor) {
			this.name = name;
		}
	}

	protected void setVersionRange(VersionRange versionRange) {
		synchronized (this.monitor) {
			this.versionRange = versionRange;
		}
	}

	protected void setBundle(BundleDescription bundle) {
		synchronized (this.monitor) {
			this.bundle = bundle;
		}
	}

	protected void setSupplier(BaseDescription supplier) {
		synchronized (this.monitor) {
			this.supplier = supplier;
		}
	}
}