/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.aries.subsystem.core.archive;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.apache.aries.subsystem.core.internal.ResourceHelper;
import org.apache.aries.subsystem.core.internal.Utils;
import org.osgi.framework.Version;
import org.osgi.resource.Requirement;
import org.osgi.resource.Resource;
import org.osgi.service.subsystem.SubsystemConstants;
public class ProvisionResourceHeader extends AbstractClauseBasedHeader<ProvisionResourceHeader.Clause> implements RequirementHeader<ProvisionResourceHeader.Clause> {
public static class Clause extends AbstractClause {
public static final String ATTRIBUTE_DEPLOYEDVERSION = DeployedVersionAttribute.NAME;
public static final String ATTRIBUTE_RESOURCEID = "resourceId";
public static final String ATTRIBUTE_TYPE = TypeAttribute.NAME;
public Clause(String clause) {
super(
parsePath(clause, Patterns.SYMBOLIC_NAME, false),
parseParameters(clause, false),
generateDefaultParameters(
TypeAttribute.DEFAULT));
}
public Clause(Resource resource) {
this(appendResource(resource, new StringBuilder()).toString());
}
public boolean contains(Resource resource) {
return getSymbolicName().equals(
ResourceHelper.getSymbolicNameAttribute(resource))
&& getDeployedVersion().equals(
ResourceHelper.getVersionAttribute(resource))
&& getType().equals(
ResourceHelper.getTypeAttribute(resource));
}
public Version getDeployedVersion() {
return ((DeployedVersionAttribute)getAttribute(ATTRIBUTE_DEPLOYEDVERSION)).getVersion();
}
public String getSymbolicName() {
return path;
}
public String getType() {
return ((TypeAttribute)getAttribute(ATTRIBUTE_TYPE)).getType();
}
public ProvisionResourceRequirement toRequirement(Resource resource) {
return new ProvisionResourceRequirement(this, resource);
}
}
public static final String NAME = SubsystemConstants.PROVISION_RESOURCE;
public static ProvisionResourceHeader newInstance(Collection<Resource> resources) {
StringBuilder builder = new StringBuilder();
for (Resource resource : resources) {
appendResource(resource, builder);
builder.append(',');
}
// Remove the trailing comma.
// TODO Intentionally letting the exception propagate since there must be at least one resource.
builder.deleteCharAt(builder.length() - 1);
return new ProvisionResourceHeader(builder.toString());
}
private static StringBuilder appendResource(Resource resource, StringBuilder builder) {
String symbolicName = ResourceHelper.getSymbolicNameAttribute(resource);
Version version = ResourceHelper.getVersionAttribute(resource);
String type = ResourceHelper.getTypeAttribute(resource);
builder.append(symbolicName)
.append(';')
.append(Clause.ATTRIBUTE_DEPLOYEDVERSION)
.append('=')
.append(version.toString())
.append(';')
.append(Clause.ATTRIBUTE_TYPE)
.append('=')
.append(type)
.append(';')
.append(Clause.ATTRIBUTE_RESOURCEID)
.append('=')
.append(Utils.getId(resource));
return builder;
}
public ProvisionResourceHeader(Collection<Clause> clauses) {
super(clauses);
}
public ProvisionResourceHeader(String value) {
super(
value,
new ClauseFactory<Clause>() {
@Override
public Clause newInstance(String clause) {
return new Clause(clause);
}
});
}
public boolean contains(Resource resource) {
for (Clause clause : getClauses())
if (clause.contains(resource))
return true;
return false;
}
public Clause getClause(Resource resource) {
String symbolicName = ResourceHelper.getSymbolicNameAttribute(resource);
Version version = ResourceHelper.getVersionAttribute(resource);
String type = ResourceHelper.getTypeAttribute(resource);
for (Clause clause : clauses) {
if (symbolicName.equals(clause.getPath())
&& clause.getDeployedVersion().equals(version)
&& type.equals(clause.getType()))
return clause;
}
return null;
}
@Override
public String getName() {
return NAME;
}
@Override
public String getValue() {
return toString();
}
@Override
public List<Requirement> toRequirements(Resource resource) {
List<Requirement> requirements = new ArrayList<Requirement>(clauses.size());
for (Clause clause : clauses)
requirements.add(clause.toRequirement(resource));
return requirements;
}
}