/**
* Converts nested ColumnFilter.f values from a column ID to the corresponding SQL field name.
*
* @param filters
* @param entities
* @return A copy of filters with field names in place of the column IDs.
* @see ColumnFilter#f
*/
private static NestedColumnFilters convertColumnIdsToFieldNames(
NestedColumnFilters filters, Map<Integer, DataEntity> entities) {
if (filters == null) return null;
NestedColumnFilters result = new NestedColumnFilters();
if (filters.cond != null) {
result.cond = new ColumnFilter();
result.cond.v = filters.cond.v;
result.cond.r = filters.cond.r;
result.cond.f =
entities
.get(((Number) filters.cond.f).intValue())
.privateMetadata
.get(PrivateMetadata.SQLCOLUMN);
} else {
NestedColumnFilters[] in = (filters.and != null ? filters.and : filters.or);
NestedColumnFilters[] out = new NestedColumnFilters[in.length];
for (int i = 0; i < in.length; i++) out[i] = convertColumnIdsToFieldNames(in[i], entities);
if (filters.and == in) result.and = out;
else result.or = out;
}
return result;
}
