/**
* Registers a helper.
*
* @param classLoader The classloader to use.
* @param configUrl Configuration URL to parse
* @param helpers The list of helpers to update.
* @param constructorClass The constructor parameter class to look for.
*/
public void registerHelpers(
ClassLoader classLoader, java.net.URL configUrl, List<?> helpers, Class<?> constructorClass) {
try {
BufferedReader reader = null;
try {
reader =
new BufferedReader(
new InputStreamReader(configUrl.openStream(), "utf-8"), IoUtils.getBufferSize());
String line = reader.readLine();
while (line != null) {
registerHelper(classLoader, getProviderClassName(line), helpers, constructorClass);
line = reader.readLine();
}
} catch (IOException e) {
Context.getCurrentLogger()
.log(Level.SEVERE, "Unable to read the provider descriptor: " + configUrl.toString());
} finally {
if (reader != null) {
reader.close();
}
}
} catch (IOException ioe) {
Context.getCurrentLogger().log(Level.SEVERE, "Exception while detecting the helpers.", ioe);
}
}
