How to use

getCollations

method

in

org.apache.calcite.rex.RexProgram

/** Helper method to determine a
 * {@link org.apache.calcite.rel.core.Calc}'s collation. */
public static List<RelCollation> calc(RelMetadataQuery mq, RelNode input,
  RexProgram program) {
 return program.getCollations(mq.collations(input));
}

/** Helper method to determine a
 * {@link org.apache.calcite.rel.core.Calc}'s collation. */
public static List<RelCollation> calc(RelMetadataQuery mq, RelNode input,
  RexProgram program) {
 return program.getCollations(mq.collations(input));
}