private Codec<?> buildCustomCodec(Element e) {
String classAttr = e.getAttribute(ATTR_CODEC);
Class<?> customCodecClass;
try {
customCodecClass = Class.forName(classAttr);
if (CustomCodec.class.isAssignableFrom(customCodecClass)) {
CustomCodec customCodec = (CustomCodec) customCodecClass.newInstance();
Map<String, String> params = new HashMap<>();
List<Element> paramElements = getSubElements(e);
for (Element paramElement : paramElements) {
params.put(paramElement.getAttribute(ATTR_KEY), paramElement.getAttribute(ATTR_VALUE));
}
if (customCodec instanceof Configurable) {
((Configurable) customCodec).configure(params);
}
return new CustomCodecAdapter(customCodec, getOptionalInteger(e, ATTR_LENGTH));
} else {
throw new ConfigException(format("Invalid custom class %s", classAttr));
}
} catch (ClassNotFoundException
| SecurityException
| InstantiationException
| IllegalAccessException
| IllegalArgumentException ex) {
throw new ConfigException(ex.getMessage(), ex);
}
}
