/** @param className Interface or abstract class that class to load should extend or implement */
public Class<?> loadAndResolve(String className, byte[] byteCode)
throws IllegalArgumentException {
// First things first: just to be sure; maybe we have already loaded it?
Class<?> old = findLoadedClass(className);
if (old != null) {
return old;
}
Class<?> impl;
// First: let's try calling it directly on parent, to be able to access protected/package-access
// stuff:
if (_cfgUseParentLoader) {
try {
Method method =
ClassLoader.class.getDeclaredMethod(
"defineClass", new Class[] {String.class, byte[].class, int.class, int.class});
method.setAccessible(true);
return (Class<?>) method.invoke(getParent(), className, byteCode, 0, byteCode.length);
} catch (Exception e) {
}
}
// but if that doesn't fly, try to do it from our own class loader
try {
impl = defineClass(className, byteCode, 0, byteCode.length);
} catch (LinkageError e) {
throw new IllegalArgumentException(
"Failed to load class '" + className + "': " + e.getMessage(), e);
}
// important: must also resolve the class...
resolveClass(impl);
return impl;
}
public boolean browse(URL url) {
try {
return browseImpl(url);
} catch (DesktopException e) {
if (logger.isDebugEnabled()) {
logger.error("Backend error starting browser", e);
} else {
logger.error(e.getMessage());
}
return false;
} catch (LinkageError e) {
logger.error("Linkage error starting browser: " + e.getMessage());
return false;
}
}
private static boolean loadHdf5Lib() {
try {
Class.forName(H5_CLASS_NAME);
return true;
} catch (ClassNotFoundException ignored) {
// no logging here, H5 class may not be provided by intention
return false;
} catch (LinkageError e) {
// warning here, because H5 class exists, but native libs couldn't be loaded
SystemUtils.LOG.warning(
MessageFormat.format(
"{0}: HDF-5 library not available: {1}: {2}",
Hdf5ProductWriterPlugIn.class, e.getClass(), e.getMessage()));
return false;
}
}
PluginManager(Config serverConfig, Iterable<ServerPlugin> plugins, LogProvider logProvider) {
Map<String, Pair<ServerPlugin, ServerExtender>> extensions =
new HashMap<String, Pair<ServerPlugin, ServerExtender>>();
Log log = logProvider.getLog(getClass());
for (ServerPlugin plugin : plugins) {
PluginPointFactory factory = new PluginPointFactoryImpl();
final ServerExtender extender = new ServerExtender(factory);
try {
plugin.loadServerExtender(extender);
} catch (Exception ex) {
log.warn("Failed to load plugin [%s]: %s", plugin.toString(), ex.getMessage());
continue;
} catch (LinkageError err) {
log.warn("Failed to load plugin [%s]: %s", plugin.toString(), err.getMessage());
continue;
}
Pair<ServerPlugin, ServerExtender> old =
extensions.put(plugin.name, Pair.of(plugin, extender));
if (old != null) {
log.warn(
String.format(
"Extension naming conflict \"%s\" between \"%s\" and \"%s\"",
plugin.name, old.first().getClass(), plugin.getClass()));
}
}
for (Pair<ServerPlugin, ServerExtender> extension : extensions.values()) {
log.info(String.format("Loaded server plugin \"%s\"", extension.first().name));
for (PluginPoint point : extension.other().all()) {
log.info(
String.format(
" %s.%s: %s",
point.forType().getSimpleName(), point.name(), point.getDescription()));
}
this.extensions.put(extension.first().name, extension.other());
}
}
/** @tests java.lang.LinkageError#LinkageError(java.lang.String) */
public void test_ConstructorLjava_lang_String() {
LinkageError e = new LinkageError("fixture");
assertEquals("fixture", e.getMessage());
assertNull(e.getCause());
}
/** @tests java.lang.LinkageError#LinkageError() */
public void test_Constructor() {
LinkageError e = new LinkageError();
assertNull(e.getMessage());
assertNull(e.getLocalizedMessage());
assertNull(e.getCause());
}