/** Create a filter that will emit all cells in a row if a given qualifier has a given value. */
private RowFilter createEmitRowsWithValueFilter(
FilterAdapterContext context, SingleColumnValueFilter filter) throws IOException {
return RowFilter.newBuilder()
.setCondition(
Condition.newBuilder()
.setPredicateFilter(
RowFilter.newBuilder()
.setChain(
Chain.newBuilder()
.addFilters(createColumnSpecFilter(filter))
.addFilters(createValueMatchFilter(context, filter))))
.setTrueFilter(ALL_VALUES_FILTER))
.build();
}
@Override
public RowFilter adapt(FilterAdapterContext context, SingleColumnValueFilter filter)
throws IOException {
if (filter.getFilterIfMissing()) {
return createEmitRowsWithValueFilter(context, filter);
} else {
return RowFilter.newBuilder()
.setCondition(
Condition.newBuilder()
.setPredicateFilter(createColumnSpecFilter(filter))
.setTrueFilter(createEmitRowsWithValueFilter(context, filter))
.setFalseFilter(ALL_VALUES_FILTER))
.build();
}
}