How to use

isValid

method

in

org.apache.calcite.rel.core.Calc

/**
 * Creates a Calc.
 *
 * @param cluster Cluster
 * @param traits Traits
 * @param child Input relation
 * @param program Calc program
 */
protected Calc(
  RelOptCluster cluster,
  RelTraitSet traits,
  RelNode child,
  RexProgram program) {
 super(cluster, traits, child);
 this.rowType = program.getOutputRowType();
 this.program = program;
 assert isValid(Litmus.THROW, null);
}

/**
 * Creates a Calc.
 *
 * @param cluster Cluster
 * @param traits Traits
 * @param child Input relation
 * @param program Calc program
 */
protected Calc(
  RelOptCluster cluster,
  RelTraitSet traits,
  RelNode child,
  RexProgram program) {
 super(cluster, traits, child);
 this.rowType = program.getOutputRowType();
 this.program = program;
 assert isValid(Litmus.THROW, null);
}