Examples of RewriteProjectRel

org.apache.drill.exec.planner.logical.RewriteProjectRel
This class rewrites all the project expression that contain convert_to/ convert_from to actual implementations. Eg: convert_from(EXPR, 'JSON') is rewritten as convert_fromjson(EXPR) With the actual method name we can find out if the function has a complex output type and we will fire/ ignore certain rules (merge project rule) based on this fact.

Examples of org.apache.drill.exec.planner.logical.RewriteProjectRel


    /* 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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Examples of org.apache.drill.exec.planner.logical.RewriteProjectRel


    /* 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

Examples of org.apache.drill.exec.planner.logical.RewriteProjectRel


    /* 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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