Examples of org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator.initialize()

Class org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator

Examples of org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator.initialize()

org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator.initialize()
Initialize should be called once and only once. Return the ObjectInspector for the return value, given the rowInspector.

    {
      for (ExprNodeGenericFuncDesc llFuncExpr : llFuncExprs)
      {
        ExprNodeDesc firstArg = llFuncExpr.getChildren().get(0);
        ExprNodeEvaluator dupExprEval = WindowingExprNodeEvaluatorFactory.get(llInfo, firstArg);
        dupExprEval.initialize(inpShape.getOI());
        GenericUDFLeadLag llFn = (GenericUDFLeadLag) llFuncExpr.getGenericUDF();
        llFn.setExprEvaluator(dupExprEval);
      }
    }

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          }


          // evaluate the expression tree
          if (prunerExpr != null) {
            ExprNodeEvaluator evaluator = ExprNodeEvaluatorFactory.get(prunerExpr);
            ObjectInspector evaluateResultOI = evaluator.initialize(rowWithPartObjectInspector);
            Object evaluateResultO = evaluator.evaluate(rowWithPart);
            Boolean r = (Boolean) ((PrimitiveObjectInspector)evaluateResultOI).getPrimitiveJavaObject(evaluateResultO);
            LOG.trace("prune result for partition " + partSpec + ": " + r);
            if (Boolean.FALSE.equals(r)) {
              if (denied_parts.isEmpty()) {

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          }
          
          // evaluate the expression tree
          if (prunerExpr != null) {
            ExprNodeEvaluator evaluator = ExprNodeEvaluatorFactory.get(prunerExpr);
            ObjectInspector evaluateResultOI = evaluator.initialize(rowWithPartObjectInspector);
            Object evaluateResultO = evaluator.evaluate(rowWithPart);
            Boolean r = (Boolean) ((PrimitiveObjectInspector)evaluateResultOI).getPrimitiveJavaObject(evaluateResultO);
            LOG.trace("prune result for partition " + partSpec + ": " + r);
            if (Boolean.FALSE.equals(r)) {
              if (denied_parts.isEmpty()) {

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    StructObjectInspector rowWithPartObjectInspector = ObjectInspectorFactory
        .getUnionStructObjectInspector(ois);


    ExprNodeEvaluator evaluator = ExprNodeEvaluatorFactory
        .get(expr);
    ObjectInspector evaluateResultOI = evaluator
        .initialize(rowWithPartObjectInspector);
    Object evaluateResultO = evaluator.evaluate(rowWithPart);


    return ((PrimitiveObjectInspector) evaluateResultOI)
        .getPrimitiveJavaObject(evaluateResultO);

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    ois.add(partObjectInspector);
    StructObjectInspector rowWithPartObjectInspector =
      ObjectInspectorFactory.getUnionStructObjectInspector(ois);


    ExprNodeEvaluator evaluator = ExprNodeEvaluatorFactory.get(expr);
    ObjectInspector evaluateResultOI = evaluator.initialize(rowWithPartObjectInspector);


    Map<PrimitiveObjectInspector, ExprNodeEvaluator> result =
      new HashMap<PrimitiveObjectInspector, ExprNodeEvaluator>();
    result.put((PrimitiveObjectInspector)evaluateResultOI,  evaluator);
    return result;

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          }
        }
        return null;
      }
      ExprNodeEvaluator evaluator = ExprNodeEvaluatorFactory.get(func);
      ObjectInspector output = evaluator.initialize(null);


      Object constant = evaluator.evaluate(null);
      Object java = ObjectInspectorUtils.copyToStandardJavaObject(constant, output);


      return new ExprNodeConstantDesc(java);

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      ExprNodeDesc selectColumnExprNode = TranslateUtils.buildExprNode(selectColumnNode, selectListInputTypeCheckCtx);
      ExprNodeEvaluator selectColumnExprEval = ExprNodeEvaluatorFactory.get(selectColumnExprNode);
      ObjectInspector selectColumnOI = null;
      try
      {
        selectColumnOI = selectColumnExprEval.initialize(selectListInputOI);
      }
      catch (HiveException he)
      {
        throw new WindowingException(he);
      }

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        ExprNodeDesc firstArg = llFuncExpr.getChildren().get(0);
        ExprNodeEvaluator dupExprEval = WindowingExprNodeEvaluatorFactory
            .get(qDef.getTranslationInfo(), firstArg);
        try
        {
          dupExprEval.initialize(iInfo.getOI());
        }
        catch (HiveException he)
        {
          throw new WindowingException(he);
        }

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  }


  private long evaluateCastToTimestamp(ExprNodeDesc expr) throws HiveException {
    ExprNodeGenericFuncDesc expr2 = (ExprNodeGenericFuncDesc) expr;
    ExprNodeEvaluator evaluator = ExprNodeEvaluatorFactory.get(expr2);
    ObjectInspector output = evaluator.initialize(null);
    Object constant = evaluator.evaluate(null);
    Object java = ObjectInspectorUtils.copyToStandardJavaObject(constant, output);


    if (!(java instanceof Timestamp)) {
      throw new HiveException("Udf: failed to convert to timestamp");

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        for(int i=0 ; i < resultExprInfo.resultExprNodes.size(); i++) {
          ExprNodeDesc selectColumnExprNode =resultExprInfo.resultExprNodes.get(i);
          ExprNodeEvaluator selectColumnExprEval =
              ExprNodeEvaluatorFactory.get(selectColumnExprNode);
          ObjectInspector selectColumnOI = selectColumnExprEval.initialize(selectListInputOI);
          resultExprInfo.resultExprEvals.add(selectColumnExprEval);
          selectListExprOIs.add(selectColumnOI);
        }


        resultExprInfo.resultOI = ObjectInspectorFactory.getStandardStructObjectInspector(

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