How to use

getExpressionColumns

method

in

org.h2.expression.JavaFunction

@Override
public Expression[] getExpressionColumns(Session session) {
  switch (getType()) {
  case Value.RESULT_SET:
    ValueResultSet rs = getValueForColumnList(session, getArgs());
    return getExpressionColumns(session, rs.getResultSet());
  case Value.ARRAY:
    return getExpressionColumns(session, (ValueArray) getValue(session));
  }
  return super.getExpressionColumns(session);
}

@Override
public Expression[] getExpressionColumns(Session session) {
  switch (getType()) {
  case Value.RESULT_SET:
    ValueResultSet rs = getValueForColumnList(session, getArgs());
    return getExpressionColumns(session, rs.getResultSet());
  case Value.ARRAY:
    return getExpressionColumns(session, (ValueArray) getValue(session));
  }
  return super.getExpressionColumns(session);
}

@Override
public Expression[] getExpressionColumns(Session session) {
  switch (getType()) {
  case Value.RESULT_SET:
    ValueResultSet rs = getValueForColumnList(session, getArgs());
    return getExpressionColumns(session, rs.getResultSet());
  case Value.ARRAY:
    return getExpressionColumns(session, (ValueArray) getValue(session));
  }
  return super.getExpressionColumns(session);
}