/**
* DOCUMENT ME!
*
* @param callstack DOCUMENT ME!
* @param interpreter DOCUMENT ME!
* @param parameterNode DOCUMENT ME!
* @return DOCUMENT ME!
* @throws EvalError DOCUMENT ME!
*/
public Object filter(CallStack callstack, Interpreter interpreter, Node parameterNode)
throws EvalError {
int col = getColumn();
if (parameterNode instanceof BSHArguments) {
Object[] keys = ((BSHArguments) parameterNode).getArguments(callstack, interpreter);
for (int i = 0; i < keys.length; i++) {
keys[i] = Primitive.unwrap(keys[i]);
}
Key key = null;
if ((keys.length == 1) && (keys[0] == Dataset.ANY)) {
key = Dataset.ANY;
} else {
key = new Key(keys);
}
Object value2 = new FilteredIndexField(this.indexView, key, col);
interpreter.getRoot().setValue2(value2);
return value2;
}
return null;
}
