Java Version.emptyVersion方法代碼示例

import org.osgi.framework.Version; //導入方法依賴的package包/類
private static Version getVersion(Dictionary headers) {
	if (headers != null) {
		Object header = headers.get(Constants.BUNDLE_VERSION);
		if (header instanceof String) {
			return Version.parseVersion((String) header);
		}
	}

	return Version.emptyVersion;
}
 

import org.osgi.framework.Version; //導入方法依賴的package包/類
/**
 * Get the version of a package import from a bundle.
 * 
 * @param bundle
 * @param packageName
 * @return
 */
private static Version hasImport(Bundle bundle, String packageName) {
	Dictionary dict = bundle.getHeaders();
	// Check imports
	String imports = (String) dict.get(Constants.IMPORT_PACKAGE);
	Version v = getVersion(imports, packageName);
	if (v != null) {
		return v;
	}
	// Check for dynamic imports
	String dynimports = (String) dict.get(Constants.DYNAMICIMPORT_PACKAGE);
	if (dynimports != null) {
		for (StringTokenizer strok = new StringTokenizer(dynimports, COMMA); strok.hasMoreTokens();) {
			StringTokenizer parts = new StringTokenizer(strok.nextToken(), SEMI_COLON);
			String pkg = parts.nextToken().trim();
			if (pkg.endsWith(".*") && packageName.startsWith(pkg.substring(0, pkg.length() - 2)) || pkg.equals("*")) {
				Version version = Version.emptyVersion;
				for (; parts.hasMoreTokens();) {
					String modifier = parts.nextToken().trim();
					if (modifier.startsWith("version")) {
						version = Version.parseVersion(modifier.substring(modifier.indexOf(EQUALS) + 1).trim());
					}
				}
				return version;
			}
		}
	}
	return null;
}
 

import org.osgi.framework.Version; //導入方法依賴的package包/類
private Event createEvent(Map<String, Object> props, String type) {
    String topic = "org/osgi/service/remoteserviceadmin/" + type;
    props.put("bundle", bctx.getBundle());
    props.put("bundle.id", bctx.getBundle().getBundleId());
    props.put("bundle.symbolicname", bctx.getBundle().getSymbolicName());

    String version = (String)bctx.getBundle().getHeaders().get("Bundle-Version");
    Version v = version != null ? new Version(version) : Version.emptyVersion;
    setIfNotNull(props, "bundle.version", v);

    return new Event(topic, props);
}
 

import org.osgi.framework.Version; //導入方法依賴的package包/類
/**
 * Creates a new instance of LogServiceImpl.
 *
 * @param bundle The bundle to create a new LogService for.
 */
public LogServiceImpl(Bundle bundle) {

    String name = bundle.getSymbolicName();
    Version version = bundle.getVersion();
    if (version == null) {
        version = Version.emptyVersion;
    }
    delegate = LoggerFactory.getLogger(name + '.' + version);
}
 

import org.osgi.framework.Version; //導入方法依賴的package包/類
/**
 * Get the version of a package name.
 * 
 * @param stmt
 * @param packageName
 * @return
 */
private static Version getVersion(String stmt, String packageName) {
	if (stmt != null) {
		String[] pkgs = splitIntoPackages(stmt);

		for (int packageIndex = 0; packageIndex < pkgs.length; packageIndex++) {
			String pkgToken = pkgs[packageIndex].trim();
			String pkg = null;
			Version version = null;
			int firstDirectiveIndex = pkgToken.indexOf(SEMI_COLON);
			if (firstDirectiveIndex > -1) {
				pkg = pkgToken.substring(0, firstDirectiveIndex);
			}
			else {
				pkg = pkgToken;
				version = Version.emptyVersion;
			}

			// check for version only if we have a match
			if (pkg.equals(packageName)) {
				// no version determined, find one
				if (version == null) {
					String[] directiveTokens = pkgToken.substring(firstDirectiveIndex + 1).split(SEMI_COLON);
					for (int directiveTokenIndex = 0; directiveTokenIndex < directiveTokens.length; directiveTokenIndex++) {
						String directive = directiveTokens[directiveTokenIndex].trim();
						// found it
						if (directive.startsWith(Constants.VERSION_ATTRIBUTE)) {
							String value = directive.substring(directive.indexOf(EQUALS) + 1).trim();

							boolean lowEqualTo = value.startsWith("\"[");
							boolean lowGreaterThen = value.startsWith("\"(");
							if (lowEqualTo || lowGreaterThen) {
								boolean highEqualTo = value.endsWith("]\"");
								boolean highLessThen = value.endsWith(")\"");

								// remove brackets
								value = value.substring(2, value.length() - 2);
								int commaIndex = value.indexOf(COMMA);

								// TODO: currently, only the left side is considered
								Version left = Version.parseVersion(value.substring(0, commaIndex));
								Version right = Version.parseVersion(value.substring(commaIndex + 1));

								return left;
							}

							// check quotes
							if (value.startsWith("\"")) {
								return Version.parseVersion(value.substring(1, value.length() - 1));
							}
							return Version.parseVersion(value);
						}
					}
					if (version == null) {
						version = Version.emptyVersion;
					}
				}
				return version;
			}
		}
	}
	return null;
}
 

import org.osgi.framework.Version; //導入方法依賴的package包/類
public static Version getBundleVersion(Bundle bundle) {
    Dictionary<?, ?> headers = bundle.getHeaders();
    String version = (String)headers.get(Constants.BUNDLE_VERSION);
    return (version != null) ? Version.parseVersion(version) : Version.emptyVersion;
}
 

import org.osgi.framework.Version; //導入方法依賴的package包/類
public static Version getBundleVersion(Bundle bundle) {
    Dictionary<?, ?> headers = bundle.getHeaders();
    String version = (String) headers.get(Constants.BUNDLE_VERSION);
    return (version != null) ? Version.parseVersion(version) : Version.emptyVersion;
}
 

import org.osgi.framework.Version; //導入方法依賴的package包/類
public Invalid ( final Path path, final Throwable e )
{
    this.path = path;
    this.error = e;
    this.description = new AddonDescription ( "unknwown", Version.emptyVersion, "n/a" );
}