/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.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.framework.namespace.PackageNamespace;
import org.osgi.resource.Requirement;
import org.osgi.resource.Resource;
public class ImportPackageHeader extends AbstractClauseBasedHeader<ImportPackageHeader.Clause> implements RequirementHeader<ImportPackageHeader.Clause> {
public static class Clause extends AbstractClause {
private static final Collection<Parameter> defaultParameters =
generateDefaultParameters(VersionRangeAttribute.DEFAULT_VERSION, ResolutionDirective.MANDATORY);
public static Clause valueOf(Requirement requirement) {
String namespace = requirement.getNamespace();
if (!ImportPackageRequirement.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 (ImportPackageRequirement.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 (ImportPackageRequirement.NAMESPACE.equals(key)) {
path = String.valueOf(value.get(0).getValue());
}
else if (ATTRIBUTE_VERSION.equals(key) || ATTRIBUTE_BUNDLE_VERSION.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);
}
public Clause(String path, Map<String, Parameter> parameters, Collection<Parameter> defaultParameters) {
super(path, parameters, defaultParameters == null ? Clause.defaultParameters : defaultParameters);
}
public Clause(String clause) {
super(
parsePath(clause, Patterns.PACKAGE_NAMES, true),
parseParameters(clause, true),
defaultParameters);
}
public Collection<String> getPackageNames() {
return Arrays.asList(path.split(";"));
}
public VersionRangeAttribute getVersionRangeAttribute() {
return (VersionRangeAttribute)getAttribute(Constants.VERSION_ATTRIBUTE);
}
public ImportPackageRequirement toRequirement(Resource resource) {
return new ImportPackageRequirement(this, resource);
}
}
public static final String ATTRIBUTE_BUNDLE_SYMBOLICNAME = PackageNamespace.CAPABILITY_BUNDLE_SYMBOLICNAME_ATTRIBUTE;
public static final String ATTRIBUTE_BUNDLE_VERSION = PackageNamespace.CAPABILITY_BUNDLE_VERSION_ATTRIBUTE;
public static final String ATTRIBUTE_VERSION = PackageNamespace.CAPABILITY_VERSION_ATTRIBUTE;
public static final String NAME = Constants.IMPORT_PACKAGE;
public static final String DIRECTIVE_RESOLUTION = PackageNamespace.REQUIREMENT_RESOLUTION_DIRECTIVE;
public static final String RESOLUTION_MANDATORY = PackageNamespace.RESOLUTION_MANDATORY;
public static final String RESOLUTION_OPTIONAL = PackageNamespace.RESOLUTION_OPTIONAL;
public ImportPackageHeader(Collection<Clause> clauses) {
super(clauses);
}
public ImportPackageHeader(String value) {
super(
value,
new ClauseFactory<Clause>() {
@Override
public Clause newInstance(String clause) {
return new Clause(clause);
}
});
}
@Override
public String getName() {
return Constants.IMPORT_PACKAGE;
}
@Override
public String getValue() {
return toString();
}
@Override
public List<ImportPackageRequirement> toRequirements(Resource resource) {
Collection<Clause> clauses = getClauses();
List<ImportPackageRequirement> result = new ArrayList<ImportPackageRequirement>(clauses.size());
for (Clause clause : clauses) {
Collection<String> packageNames = clause.getPackageNames();
if (packageNames.size() > 1) {
for (String packageName : packageNames) {
Collection<Parameter> parameters = clause.getParameters();
Map<String, Parameter> name2parameter = new HashMap<String, Parameter>(parameters.size());
for (Parameter parameter : parameters) {
name2parameter.put(parameter.getName(), parameter);
}
result.add(new Clause(packageName, name2parameter, null).toRequirement(resource));
}
}
else {
result.add(clause.toRequirement(resource));
}
}
return result;
}
}