/*
* 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.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import org.osgi.framework.Constants;
import org.osgi.resource.Resource;
public class ExportPackageHeader extends AbstractClauseBasedHeader<ExportPackageHeader.Clause> implements CapabilityHeader<ExportPackageHeader.Clause> {
public static class Clause extends AbstractClause {
public static final String ATTRIBUTE_VERSION = Constants.VERSION_ATTRIBUTE;
public static final String DIRECTIVE_EXCLUDE = Constants.EXCLUDE_DIRECTIVE;
public static final String DIRECTIVE_INCLUDE = Constants.INCLUDE_DIRECTIVE;
public static final String DIRECTIVE_MANDATORY = Constants.MANDATORY_DIRECTIVE;
public static final String DIRECTIVE_USES = Constants.USES_DIRECTIVE;
public Clause(String clause) {
super(
parsePath(clause, Patterns.PACKAGE_NAMES, false),
parseParameters(clause, false),
generateDefaultParameters(
VersionAttribute.DEFAULT));
}
@Override
public Attribute getAttribute(String name) {
Parameter result = parameters.get(name);
if (result instanceof Attribute) {
return (Attribute)result;
}
return null;
}
@Override
public Collection<Attribute> getAttributes() {
ArrayList<Attribute> attributes = new ArrayList<Attribute>(parameters.size());
for (Parameter parameter : parameters.values()) {
if (parameter instanceof Attribute) {
attributes.add((Attribute)parameter);
}
}
attributes.trimToSize();
return attributes;
}
@Override
public Directive getDirective(String name) {
Parameter result = parameters.get(name);
if (result instanceof Directive) {
return (Directive)result;
}
return null;
}
@Override
public Collection<Directive> getDirectives() {
ArrayList<Directive> directives = new ArrayList<Directive>(parameters.size());
for (Parameter parameter : parameters.values()) {
if (parameter instanceof Directive) {
directives.add((Directive)parameter);
}
}
directives.trimToSize();
return directives;
}
public Collection<String> getPackageNames() {
return Arrays.asList(path.split(";"));
}
@Override
public Parameter getParameter(String name) {
return parameters.get(name);
}
@Override
public Collection<Parameter> getParameters() {
return Collections.unmodifiableCollection(parameters.values());
}
@Override
public String getPath() {
return path;
}
public Collection<ExportPackageCapability> toCapabilities(Resource resource) {
Collection<String> packageNames = getPackageNames();
Collection<ExportPackageCapability> result = new ArrayList<ExportPackageCapability>(packageNames.size());
for (String packageName : packageNames) {
result.add(new ExportPackageCapability(packageName, parameters.values(), resource));
}
return result;
}
}
public static final String NAME = Constants.EXPORT_PACKAGE;
public ExportPackageHeader(String value) {
super(
value,
new ClauseFactory<Clause>() {
@Override
public Clause newInstance(String clause) {
return new Clause(clause);
}
});
}
@Override
public String getName() {
return NAME;
}
@Override
public String getValue() {
return toString();
}
@Override
public List<ExportPackageCapability> toCapabilities(Resource resource) {
List<ExportPackageCapability> result = new ArrayList<ExportPackageCapability>();
for (Clause clause : clauses)
result.addAll(clause.toCapabilities(resource));
return result;
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
for (Clause clause : getClauses()) {
builder.append(clause).append(',');
}
// Remove the trailing comma. Note at least one clause is guaranteed to exist.
builder.deleteCharAt(builder.length() - 1);
return builder.toString();
}
}