private TermsFilter termsFilter(String columnName, Literal arrayLiteral) {
TermsFilter termsFilter;
Object values = arrayLiteral.value();
if (values instanceof Collection) {
termsFilter =
new TermsFilter(
columnName,
getBytesRefs((Collection) values, TermBuilder.forType(arrayLiteral.valueType())));
} else {
termsFilter =
new TermsFilter(
columnName,
getBytesRefs((Object[]) values, TermBuilder.forType(arrayLiteral.valueType())));
}
return termsFilter;
}
@SuppressWarnings("unchecked")
private static BytesRef[] getBytesRefs(Collection values, TermBuilder termBuilder) {
BytesRef[] terms = new BytesRef[values.size()];
int i = 0;
for (Object value : values) {
terms[i] = termBuilder.term(value);
i++;
}
return terms;
}
@Override
public Query apply(Function input, Context context) throws IOException {
Tuple<Reference, Literal> tuple = prepare(input);
if (tuple == null) {
return null;
}
String field = tuple.v1().info().ident().columnIdent().fqn();
Literal literal = tuple.v2();
CollectionType dataType = ((CollectionType) literal.valueType());
Set values = (Set) literal.value();
DataType innerType = dataType.innerType();
BytesRef[] terms = getBytesRefs(values, TermBuilder.forType(innerType));
TermsFilter termsFilter = new TermsFilter(field, terms);
return new FilteredQuery(Queries.newMatchAllQuery(), termsFilter);
}
