ICompressor compressor = (ICompressor)method.invoke(null, compressionOptions);
// Check for unknown options
Set<String> supportedOpts = compressor.supportedOptions();
for (String provided : compressionOptions.keySet())
if (!supportedOpts.contains(provided))
throw new ConfigurationException("Unknown compression options " + provided);
return compressor;
}
catch (NoSuchMethodException e)
{
throw new ConfigurationException("create method not found", e);
}
catch (SecurityException e)
{
throw new ConfigurationException("Access forbiden", e);
}
catch (IllegalAccessException e)
{
throw new ConfigurationException("Cannot access method create in " + compressorClass.getName(), e);
}
catch (InvocationTargetException e)
{
Throwable cause = e.getCause();
throw new ConfigurationException(String.format("%s.create() threw an error: %s",
compressorClass.getSimpleName(),
cause == null ? e.getClass().getName() + " " + e.getMessage() : cause.getClass().getName() + " " + cause.getMessage()),
e);
}
catch (ExceptionInInitializerError e)
{
throw new ConfigurationException("Cannot initialize class " + compressorClass.getName());
}
}