Examples with RelWriterImpl org.apache.calcite.rel.externalize.RelWriterImpl used on opensource projects

Example 1 with RelWriterImpl

use of org.apache.calcite.rel.externalize.RelWriterImpl in project calcite by apache.

the class RelOptUtil method toString.

/**
 * Converts a relational expression to a string.
 */
public static String toString(final RelNode rel, SqlExplainLevel detailLevel) {
    if (rel == null) {
        return null;
    }
    final StringWriter sw = new StringWriter();
    final RelWriter planWriter = new RelWriterImpl(new PrintWriter(sw), detailLevel, false);
    rel.explain(planWriter);
    return sw.toString();
}

Example 2 with RelWriterImpl

use of org.apache.calcite.rel.externalize.RelWriterImpl in project calcite by apache.

the class RexProgram method toString.

// description of this calc, chiefly intended for debugging
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();
}

Example 3 with RelWriterImpl

use of org.apache.calcite.rel.externalize.RelWriterImpl in project calcite by apache.

the class RelOptUtil method dumpPlan.

/**
 * Dumps a plan as a string.
 *
 * @param header      Header to print before the plan. Ignored if the format
 *                    is XML
 * @param rel         Relational expression to explain
 * @param format      Output format
 * @param detailLevel Detail level
 * @return Plan
 */
public static String dumpPlan(String header, RelNode rel, SqlExplainFormat format, SqlExplainLevel detailLevel) {
    StringWriter sw = new StringWriter();
    PrintWriter pw = new PrintWriter(sw);
    if (!header.equals("")) {
        pw.println(header);
    }
    RelWriter planWriter;
    switch(format) {
        case XML:
            planWriter = new RelXmlWriter(pw, detailLevel);
            break;
        case JSON:
            planWriter = new RelJsonWriter();
            rel.explain(planWriter);
            return ((RelJsonWriter) planWriter).asString();
        default:
            planWriter = new RelWriterImpl(pw, detailLevel, false);
    }
    rel.explain(planWriter);
    pw.flush();
    return sw.toString();
}

Example 4 with RelWriterImpl

use of org.apache.calcite.rel.externalize.RelWriterImpl in project calcite by apache.

the class AbstractRelNode method computeDigest.

/**
 * Computes the digest. Does not modify this object.
 *
 * @return Digest
 */
protected String computeDigest() {
    StringWriter sw = new StringWriter();
    RelWriter pw = new RelWriterImpl(new PrintWriter(sw), SqlExplainLevel.DIGEST_ATTRIBUTES, false) {

        protected void explain_(RelNode rel, List<Pair<String, Object>> values) {
            pw.write(getRelTypeName());
            for (RelTrait trait : traitSet) {
                pw.write(".");
                pw.write(trait.toString());
            }
            pw.write("(");
            int j = 0;
            for (Pair<String, Object> value : values) {
                if (j++ > 0) {
                    pw.write(",");
                }
                pw.write(value.left + "=" + value.right);
            }
            pw.write(")");
        }
    };
    explain(pw);
    return sw.toString();
}