How to use

collectExplainTerms

method

in

org.apache.calcite.rex.RexProgram

public RelWriter collectExplainTerms(
  String prefix,
  RelWriter pw) {
 return collectExplainTerms(
   prefix,
   pw,
   SqlExplainLevel.EXPPLAN_ATTRIBUTES);
}

public RelWriter collectExplainTerms(
  String prefix,
  RelWriter pw) {
 return collectExplainTerms(
   prefix,
   pw,
   SqlExplainLevel.EXPPLAN_ATTRIBUTES);
}

/**
 * Writes an explanation of the expressions in this program to a plan
 * writer.
 *
 * @param pw Plan writer
 */
public RelWriter explainCalc(RelWriter pw) {
 return collectExplainTerms("", pw, pw.getDetailLevel());
}

/**
 * Writes an explanation of the expressions in this program to a plan
 * writer.
 *
 * @param pw Plan writer
 */
public RelWriter explainCalc(RelWriter pw) {
 return collectExplainTerms("", pw, pw.getDetailLevel());
}

public String toString() {
 // Intended to produce similar output to explainCalc,
 // but without requiring a RelNode or RelOptPlanWriter.
 final RelWriterImpl pw =
   new RelWriterImpl(new PrintWriter(new StringWriter()));
 collectExplainTerms("", pw);
 return pw.simple();
}

public String toString() {
 // Intended to produce similar output to explainCalc,
 // but without requiring a RelNode or RelOptPlanWriter.
 final RelWriterImpl pw =
   new RelWriterImpl(new PrintWriter(new StringWriter()));
 collectExplainTerms("", pw);
 return pw.simple();
}