/*
* 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.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.aries.subsystem.core.capabilityset.SimpleFilter;
import org.osgi.framework.Constants;
import org.osgi.resource.Requirement;
import org.osgi.resource.Resource;
public class RequireBundleHeader extends AbstractClauseBasedHeader<RequireBundleHeader.Clause>implements RequirementHeader<RequireBundleHeader.Clause> {
public static class Clause extends AbstractClause {
public static final String ATTRIBUTE_BUNDLEVERSION = Constants.BUNDLE_VERSION_ATTRIBUTE;
public static final String DIRECTIVE_RESOLUTION = Constants.RESOLUTION_DIRECTIVE;
public static final String DIRECTIVE_VISIBILITY = Constants.VISIBILITY_DIRECTIVE;
private static final Collection<Parameter> defaultParameters = generateDefaultParameters(
VersionRangeAttribute.DEFAULT_BUNDLEVERSION,
VisibilityDirective.PRIVATE,
ResolutionDirective.MANDATORY);
public Clause(String clause) {
super(
parsePath(clause, Patterns.SYMBOLIC_NAME, false),
parseParameters(clause, true),
defaultParameters);
}
public Clause(String path, Map<String, Parameter> parameters, Collection<Parameter> defaultParameters) {
super(path, parameters, defaultParameters);
}
public static Clause valueOf(Requirement requirement) {
String namespace = requirement.getNamespace();
if (!RequireBundleRequirement.NAMESPACE.equals(namespace)) {
throw new IllegalArgumentException("Invalid namespace:" + namespace);
}
Map<String, Parameter> parameters = new HashMap<String, Parameter>();
String filter = null;
Map<String, String> directives = requirement.getDirectives();
for (Map.Entry<String, String> entry : directives.entrySet()) {
String key = entry.getKey();
if (RequireBundleRequirement.DIRECTIVE_FILTER.equals(key)) {
filter = entry.getValue();
}
else {
parameters.put(key, DirectiveFactory.createDirective(key, entry.getValue()));
}
}
Map<String, List<SimpleFilter>> attributes = SimpleFilter.attributes(filter);
String path = null;
for (Map.Entry<String, List<SimpleFilter>> entry : attributes.entrySet()) {
String key = entry.getKey();
List<SimpleFilter> value = entry.getValue();
if (RequireBundleRequirement.NAMESPACE.equals(key)) {
path = String.valueOf(value.get(0).getValue());
}
else if (ATTRIBUTE_BUNDLEVERSION.equals(key)) {
parameters.put(key, new VersionRangeAttribute(key, parseVersionRange(value)));
}
else {
parameters.put(key, AttributeFactory.createAttribute(key,
String.valueOf(value.get(0).getValue())));
}
}
return new Clause(path, parameters, defaultParameters);
}
@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 String getSymbolicName() {
return path;
}
public RequireBundleRequirement toRequirement(Resource resource) {
return new RequireBundleRequirement(this, resource);
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder()
.append(getPath());
for (Parameter parameter : getParameters()) {
builder.append(';').append(parameter);
}
return builder.toString();
}
}
public static final String NAME = Constants.REQUIRE_BUNDLE;
public RequireBundleHeader(Collection<Clause> clauses) {
super(clauses);
}
public RequireBundleHeader(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<RequireBundleRequirement> toRequirements(Resource resource) {
List<RequireBundleRequirement> requirements = new ArrayList<RequireBundleRequirement>(clauses.size());
for (Clause clause : clauses)
requirements.add(clause.toRequirement(resource));
return requirements;
}
}