public Requirement requirement(String name, String filter) {
RequirementImpl req = new RequirementImpl();
req.setName(name);
if (filter != null) {
req.setFilter(filter);
}
return req;
}
private static void doImports(ResourceImpl resource, Headers headers) {
Clause[] clauses = Parser.parseHeader(headers.getHeader(Constants.IMPORT_PACKAGE));
for (int i = 0; clauses != null && i < clauses.length; i++) {
RequirementImpl requirement = new RequirementImpl(Capability.PACKAGE);
createImportFilter(requirement, Capability.PACKAGE, clauses[i]);
requirement.addText("Import package " + clauses[i]);
requirement.setOptional(
Constants.RESOLUTION_OPTIONAL.equalsIgnoreCase(
clauses[i].getDirective(Constants.RESOLUTION_DIRECTIVE)));
resource.addRequire(requirement);
}
}
private static Set doImportPackageAttributes(
RequirementImpl requirement, StringBuffer filter, Attribute[] attributes) {
HashSet set = new HashSet();
for (int i = 0; attributes != null && i < attributes.length; i++) {
String name = attributes[i].getName();
String value = attributes[i].getValue();
if (name.equalsIgnoreCase(Constants.PACKAGE_SPECIFICATION_VERSION)
|| name.equalsIgnoreCase(Constants.VERSION_ATTRIBUTE)) {
continue;
} else if (name.equalsIgnoreCase(Constants.RESOLUTION_DIRECTIVE + ":")) {
requirement.setOptional(Constants.RESOLUTION_OPTIONAL.equalsIgnoreCase(value));
}
if (name.endsWith(":")) {
// Ignore
} else {
filter.append("(");
filter.append(name);
filter.append("=");
filter.append(value);
filter.append(")");
set.add(name);
}
}
return set;
}
private static void createImportFilter(RequirementImpl requirement, String name, Clause clause) {
StringBuffer filter = new StringBuffer();
filter.append("(&(");
filter.append(name);
filter.append("=");
filter.append(clause.getName());
filter.append(")");
appendVersion(filter, getVersionRange(clause));
Attribute[] attributes = clause.getAttributes();
Set attrs = doImportPackageAttributes(requirement, filter, attributes);
// The next code is using the subset operator
// to check mandatory attributes, it seems to be
// impossible to rewrite. It must assert that whateber
// is in mandatory: must be in any of the attributes.
// This is a fundamental shortcoming of the filter language.
if (attrs.size() > 0) {
String del = "";
filter.append("(mandatory:<*");
for (Iterator i = attrs.iterator(); i.hasNext(); ) {
filter.append(del);
filter.append(i.next());
del = ", ";
}
filter.append(")");
}
filter.append(")");
requirement.setFilter(filter.toString());
}
private static void doExecutionEnvironment(ResourceImpl resource, Headers headers) {
Clause[] clauses =
Parser.parseHeader(headers.getHeader(Constants.BUNDLE_REQUIREDEXECUTIONENVIRONMENT));
if (clauses != null && clauses.length > 0) {
StringBuffer sb = new StringBuffer();
sb.append("(|");
for (int i = 0; i < clauses.length; i++) {
sb.append("(");
sb.append(Capability.EXECUTIONENVIRONMENT);
sb.append("=");
sb.append(clauses[i].getName());
sb.append(")");
}
sb.append(")");
RequirementImpl req = new RequirementImpl(Capability.EXECUTIONENVIRONMENT);
req.setFilter(sb.toString());
req.addText("Execution Environment " + sb.toString());
resource.addRequire(req);
}
}
private static void doImportExportServices(ResourceImpl resource, Headers headers) {
Clause[] imports = Parser.parseHeader(headers.getHeader(Constants.IMPORT_SERVICE));
for (int i = 0; imports != null && i < imports.length; i++) {
RequirementImpl ri = new RequirementImpl(Capability.SERVICE);
ri.setFilter(createServiceFilter(imports[i]));
ri.addText("Import Service " + imports[i].getName());
String avail = imports[i].getDirective("availability");
String mult = imports[i].getDirective("multiple");
ri.setOptional("optional".equalsIgnoreCase(avail));
ri.setMultiple(!"false".equalsIgnoreCase(mult));
resource.addRequire(ri);
}
Clause[] exports = Parser.parseHeader(headers.getHeader(Constants.EXPORT_SERVICE));
for (int i = 0; exports != null && i < exports.length; i++) {
CapabilityImpl cap = createServiceCapability(exports[i]);
resource.addCapability(cap);
}
}
private static void doFragment(ResourceImpl resource, Headers headers) {
// Check if we are a fragment
Clause[] clauses = Parser.parseHeader(headers.getHeader(Constants.FRAGMENT_HOST));
if (clauses != null && clauses.length == 1) {
// We are a fragment, create a requirement
// to our host.
RequirementImpl r = new RequirementImpl(Capability.BUNDLE);
StringBuffer sb = new StringBuffer();
sb.append("(&(symbolicname=");
sb.append(clauses[0].getName());
sb.append(")");
appendVersion(
sb,
VersionRange.parseVersionRange(
clauses[0].getAttribute(Constants.BUNDLE_VERSION_ATTRIBUTE)));
sb.append(")");
r.setFilter(sb.toString());
r.addText("Required Host " + clauses[0].getName());
r.setExtend(true);
r.setOptional(false);
r.setMultiple(false);
resource.addRequire(r);
// And insert a capability that we are available
// as a fragment. ### Do we need that with extend?
CapabilityImpl capability = new CapabilityImpl(Capability.FRAGMENT);
capability.addProperty("host", clauses[0].getName());
capability.addProperty("version", Property.VERSION, getVersion(clauses[0]));
resource.addCapability(capability);
}
}
private static void doRequires(ResourceImpl resource, Headers headers) {
Clause[] clauses = Parser.parseHeader(headers.getHeader(Constants.REQUIRE_BUNDLE));
for (int i = 0; clauses != null && i < clauses.length; i++) {
RequirementImpl r = new RequirementImpl(Capability.BUNDLE);
VersionRange v =
VersionRange.parseVersionRange(
clauses[i].getAttribute(Constants.BUNDLE_VERSION_ATTRIBUTE));
StringBuffer sb = new StringBuffer();
sb.append("(&(symbolicname=");
sb.append(clauses[i].getName());
sb.append(")");
appendVersion(sb, v);
sb.append(")");
r.setFilter(sb.toString());
r.addText("Require Bundle " + clauses[i].getName() + "; " + v);
r.setOptional(
Constants.RESOLUTION_OPTIONAL.equalsIgnoreCase(
clauses[i].getDirective(Constants.RESOLUTION_DIRECTIVE)));
resource.addRequire(r);
}
}
/** * Parse an old style OBR repository. * * <p><dtd-version>1.0</dtd-version> <repository> <name>Oscar Bundle Repository</name> * <url>http://oscar-osgi.sourceforge.net/</url> <date>Fri May 07 16:45:07 CEST 2004</date> * <extern-repositories> * <!-- * Stefano Lenzi ([email protected]) --> * <url>http://domoware.isti.cnr.it/osgi-obr/niche-osgi-obr.xml</url> * <!--Manuel Palencia ([email protected]) --> * <!-- * <url>http://jmood.forge.os4os.org/repository.xml</url> --> * <!-- Enrique * Rodriguez ([email protected]) --> * <url>http://update.cainenable.org/repository.xml</url> </extern-repositories> </repository> * <bundle> <bundle-name>Bundle Repository</bundle-name> <bundle-description> A bundle repository * service for Oscar. </bundle-description> <bundle-updatelocation> * http://oscar-osgi.sf.net/repo/bundlerepository/bundlerepository.jar </bundle-updatelocation> * <bundle-sourceurl> http://oscar-osgi.sf.net/repo/bundlerepository/bundlerepository-src.jar * </bundle-sourceurl> <bundle-version>1.1.3</bundle-version> <bundle-docurl> * http://oscar-osgi.sf.net/repo/bundlerepository/ </bundle-docurl> * <bundle-category>General</bundle-category> <import-package package="org.osgi.framework"/> * <export-package package="org.ungoverned.osgi.service.bundlerepository" * specification-version="1.1.0"/> </bundle> * */ private void parseOscar(XmlPullParser parser) throws Exception { parser.require(XmlPullParser.START_TAG, null, "bundles"); while (true) { int event = parser.next(); // Error .. if (event == XmlPullParser.TEXT) event = parser.next(); if (event != XmlPullParser.START_TAG) break; ResourceImpl resource = new ResourceImpl(this); if (parser.getName().equals("bundle")) { while (parser.nextTag() == XmlPullParser.START_TAG) { String key = parser.getName(); if (key.equals("import-package")) { RequirementImpl requirement = new RequirementImpl("package"); requirement.setOptional(false); requirement.setMultiple(false); String p = parser.getAttributeValue(null, "package"); StringBuffer sb = new StringBuffer(); sb.append("(&(package="); sb.append(p); sb.append(")"); String version = parser.getAttributeValue(null, "specification-version"); VersionRange v = new VersionRange("0"); if (version != null) { sb.append("(version="); sb.append(v = new VersionRange(version)); sb.append(")"); } sb.append(")"); requirement.setFilter(sb.toString()); requirement.setComment("Import-Package: " + p + ";" + v); resource.addRequirement(requirement); parser.nextTag(); } else if (key.equals("export-package")) { CapabilityImpl capability = new CapabilityImpl("package"); capability.addProperty("package", parser.getAttributeValue(null, "package")); String version = parser.getAttributeValue(null, "specification-version"); if (version != null) { capability.addProperty("version", new VersionRange(version)); } resource.addCapability(capability); parser.nextTag(); } else { String value = parser.nextText().trim(); if (key.equals("bundle-sourceurl")) resource.setSource(new URL(value)); else if (key.equals("bundle-docurl")) resource.setDocumentation(new URL(value)); else if (key.equals("bundle-updatelocation")) resource.setURL(new URL(value)); else if (key.equals("bundle-description")) resource.setDescription(value); else if (key.equals("bundle-category")) resource.addCategory(value); else if (key.equals("bundle-name")) { resource.setName(value); resource.setPresentationName(value); } else if (key.equals("bundle-version")) resource.setVersion(new VersionRange(value)); else { resource.put(key, value); } } } resources.add(resource); parser.require(XmlPullParser.END_TAG, null, "bundle"); } else if (parser.getName().equals("repository")) { parser.require(XmlPullParser.START_TAG, null, "repository"); while (parser.nextTag() == XmlPullParser.START_TAG) { String tag = parser.getName(); if (tag.equals("name")) { String name = parser.nextText(); if (this.name == null) this.name = name.trim(); } else if (tag.equals("url")) parser.nextText().trim(); else if (tag.equals("date")) parser.nextText().trim(); else if (tag.equals("extern-repositories")) { parser.require(XmlPullParser.START_TAG, null, "extern-repositories"); while (parser.nextTag() == XmlPullParser.START_TAG) { if (parser.getName().equals("url")) parseDocument(new URL(parser.nextText().trim())); else throw new IllegalArgumentException( "Invalid tag in repository while parsing extern repositories: " + url + " " + parser.getName()); } parser.require(XmlPullParser.END_TAG, null, "extern-repositories"); } else throw new IllegalArgumentException( "Invalid tag in repository: " + url + " " + parser.getName()); } parser.require(XmlPullParser.END_TAG, null, "repository"); } else if (parser.getName().equals("dtd-version")) { parser.nextText(); } else throw new IllegalArgumentException( "Invalid tag in repository: " + url + " " + parser.getName()); } parser.require(XmlPullParser.END_TAG, null, "bundles"); }
