Examples of org.eigenbase.rel.RelNode.accept()

org.eigenbase.rel.RelNode.accept()
Accepts a visit from a shuttle. @param shuttle Shuttle @return A copy of this node incorporating changes made by the shuttle tothis node's children


    /* Traverse the tree and replace the convert_from, convert_to function to actual implementations
     * Eg: convert_from(EXPR, 'JSON') be converted to convert_fromjson(EXPR);
     * TODO: Ideally all function rewrites would move here instead of DrillOptiq
     */
    rel = rel.accept(new RewriteProjectRel(planner.getTypeFactory(), context.getDrillOperatorTable()));
    log("Optiq Logical", rel);
    DrillRel drel = convertToDrel(rel);
    log("Drill Logical", drel);
    Prel prel = convertToPrel(drel);
    log("Drill Physical", prel);

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    /* Traverse the tree and replace the convert_from, convert_to function to actual implementations
     * Eg: convert_from(EXPR, 'JSON') be converted to convert_fromjson(EXPR);
     * TODO: Ideally all function rewrites would move here instead of DrillOptiq
     */
    rel = rel.accept(new RewriteProjectRel(planner.getTypeFactory(), context.getDrillOperatorTable()));
    log("Optiq Logical", rel);
    DrillRel drel = convertToDrel(rel);
    log("Drill Logical", drel);
    Prel prel = convertToPrel(drel);
    log("Drill Physical", prel);

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    /* Traverse the tree and replace the convert_from, convert_to function to actual implementations
     * Eg: convert_from(EXPR, 'JSON') be converted to convert_fromjson(EXPR);
     * TODO: Ideally all function rewrites would move here instead of DrillOptiq
     */
    rel = rel.accept(new RewriteProjectRel(planner.getTypeFactory(), context.getDrillOperatorTable()));
    log("Optiq Logical", rel);
    DrillRel drel = convertToDrel(rel);
    log("Drill Logical", drel);
    Prel prel = convertToPrel(drel);
    log("Drill Physical", prel);

View Full Code Here

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