@Override
public SortedKeyValueIterator<Key, Value> deepCopy(IteratorEnvironment env) {
ValueSummingIterator iterator = new ValueSummingIterator();
iterator.encoder = encoder;
iterator.hasTop = true;
iterator.sum = sum;
iterator.type = type;
switch (Type.valueOf(type)) {
case VARLEN:
iterator.encoder = VAR_LEN_ENCODER;
break;
case FIXEDLEN:
iterator.encoder = FIXED_LEN_ENCODER;
break;
case STRING:
iterator.encoder = STRING_ENCODER;
break;
}
return iterator;
}
@Override
public boolean validateOptions(Map<String, String> options) {
try {
this.type = options.get(TYPE);
if (type == null) {
throw new IllegalArgumentException("no type specified");
}
switch (Type.valueOf(type)) {
case VARLEN:
this.encoder = VAR_LEN_ENCODER;
break;
case FIXEDLEN:
this.encoder = FIXED_LEN_ENCODER;
break;
case STRING:
this.encoder = STRING_ENCODER;
break;
}
} catch (Exception e) {
throw new IllegalArgumentException("bad encoder option", e);
}
return true;
}
/**
* A convenience method for setting the long encoding type.
*
* @param is IteratorSetting object to configure.
* @param type LongCombiner.Type specifying the encoding type.
*/
public static void setEncodingType(IteratorSetting is, Type type) {
is.addOption(TYPE, type.toString());
}
