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/*******************************************************************************
* Copyright (c) 2003, 2011 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
* Rob Harrop - SpringSource Inc. (bug 247522)
*******************************************************************************/
package org.eclipse.osgi.internal.resolver;
import java.util.*;
import org.eclipse.osgi.service.resolver.*;
import org.osgi.framework.Constants;
import org.osgi.framework.wiring.BundleRevision;
public class HostSpecificationImpl extends VersionConstraintImpl implements HostSpecification {
private BundleDescription[] hosts;
private boolean multihost = false;
private Map<String, Object> attributes;
private Map<String, String> arbitraryDirectives;
Map<String, Object> getAttributes() {
synchronized (this.monitor) {
return attributes;
}
}
@SuppressWarnings("unchecked")
void setAttributes(Map<String, ?> attributes) {
synchronized (this.monitor) {
this.attributes = (Map<String, Object>) attributes;
}
}
Map<String, String> getArbitraryDirectives() {
synchronized (this.monitor) {
return arbitraryDirectives;
}
}
@SuppressWarnings("unchecked")
void setArbitraryDirectives(Map<String, ?> directives) {
synchronized (this.monitor) {
this.arbitraryDirectives = (Map<String, String>) directives;
}
}
public boolean isSatisfiedBy(BaseDescription supplier) {
if (!(supplier instanceof BundleDescriptionImpl))
return false;
BundleDescriptionImpl candidate = (BundleDescriptionImpl) supplier;
if (candidate.getHost() != null)
return false;
Map<String, ?> requiredAttrs = getAttributes();
if (requiredAttrs != null) {
Map<String, ?> prividerAttrs = candidate.getAttributes();
if (prividerAttrs == null)
return false;
for (String key : requiredAttrs.keySet()) {
Object requiredValue = requiredAttrs.get(key);
Object prividedValue = prividerAttrs.get(key);
if (prividedValue == null || !requiredValue.equals(prividedValue))
return false;
}
}
String[] mandatory = (String[]) candidate.getDirective(Constants.MANDATORY_DIRECTIVE);
if (!hasMandatoryAttributes(mandatory))
return false;
if (getName() != null && getName().equals(candidate.getSymbolicName()) && (getVersionRange() == null || getVersionRange().isIncluded(candidate.getVersion())))
return true;
return false;
}
public BundleDescription[] getHosts() {
synchronized (this.monitor) {
return hosts == null ? BundleDescriptionImpl.EMPTY_BUNDLEDESCS : hosts;
}
}
@Override
protected boolean hasMandatoryAttributes(String[] mandatory) {
if (mandatory != null) {
Map<String, ?> requiredAttrs = getAttributes();
for (String key : mandatory) {
if (Constants.BUNDLE_VERSION_ATTRIBUTE.equals(key))
continue; // has a default value of 0.0.0
if (requiredAttrs == null || requiredAttrs.get(key) == null)
return false;
}
}
return true;
}
public boolean isResolved() {
synchronized (this.monitor) {
return hosts != null && hosts.length > 0;
}
}
/*
* The resolve algorithm will call this method to set the hosts.
*/
void setHosts(BundleDescription[] hosts) {
synchronized (this.monitor) {
this.hosts = hosts;
}
}
public String toString() {
return "Fragment-Host: " + getName() + "; bundle-version=\"" + getVersionRange() + "\""; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
}
public BaseDescription getSupplier() {
synchronized (this.monitor) {
if (hosts == null || hosts.length == 0)
return null;
return hosts[0];
}
}
public boolean isMultiHost() {
synchronized (this.monitor) {
return multihost;
}
}
void setIsMultiHost(boolean multihost) {
synchronized (this.monitor) {
this.multihost = multihost;
}
}
@Override
protected Map<String, String> getInternalDirectives() {
Map<String, String> result = new HashMap<String, String>(2);
synchronized (this.monitor) {
if (arbitraryDirectives != null)
result.putAll(arbitraryDirectives);
result.put(Constants.FILTER_DIRECTIVE, createFilterDirective());
return result;
}
}
private String createFilterDirective() {
StringBuffer filter = new StringBuffer();
filter.append("(&"); //$NON-NLS-1$
synchronized (this.monitor) {
addFilterAttribute(filter, BundleRevision.HOST_NAMESPACE, getName());
VersionRange range = getVersionRange();
if (range != null && range != VersionRange.emptyRange)
addFilterAttribute(filter, Constants.BUNDLE_VERSION_ATTRIBUTE, range);
if (attributes != null)
addFilterAttributes(filter, attributes);
}
filter.append(')');
return filter.toString();
}
@SuppressWarnings("unchecked")
@Override
protected Map<String, Object> getInteralAttributes() {
return Collections.EMPTY_MAP;
}
@Override
protected String getInternalNameSpace() {
return BundleRevision.HOST_NAMESPACE;
}
}
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