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

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

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

org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator.evaluate()
Evaluate the expression given the row. This method should use the rowInspector passed in from initialize to inspect the row object. The return value will be inspected by the return value of initialize.

        ois.add(partObjectInspector);
        StructObjectInspector rowWithPartObjectInspector = ObjectInspectorFactory.getUnionStructObjectInspector(ois);
        
        // evaluate the expression tree
        if (evaluator != null) {
          evaluator.evaluate(rowWithPart, rowWithPartObjectInspector, inspectableObject);
          LOG.trace("prune result for partition " + partSpec + ": " + inspectableObject.o);
          if (Boolean.TRUE.equals(inspectableObject.o)) {
            LOG.debug("retained partition: " + partSpec);
            true_parts.add(part);
          }

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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()) {
                Partition part = Hive.get().getPartition(tab, partSpec, Boolean.FALSE);

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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()) {
                Partition part = Hive.get().getPartition(tab, partSpec, Boolean.FALSE);

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


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

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    // only get the 1st entry from the map
    Map.Entry<PrimitiveObjectInspector, ExprNodeEvaluator> entry = pair.entrySet().iterator().next();
    PrimitiveObjectInspector evaluateResultOI = entry.getKey();
    ExprNodeEvaluator evaluator = entry.getValue();


    Object evaluateResultO = evaluator.evaluate(rowWithPart);


    return evaluateResultOI.getPrimitiveJavaObject(evaluateResultO);
  }
}

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        ois.add(partObjectInspector);
        StructObjectInspector rowWithPartObjectInspector = ObjectInspectorFactory.getUnionStructObjectInspector(ois);
        
        // evaluate the expression tree
        if (evaluator != null) {
          evaluator.evaluate(rowWithPart, rowWithPartObjectInspector, inspectableObject);
          LOG.trace("prune result for partition " + partSpec + ": " + inspectableObject.o);
          if (!Boolean.FALSE.equals(inspectableObject.o)) {
            LOG.debug("retained partition: " + partSpec);
            ret_parts.add(part);
          } else {

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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);
    } catch (Exception e) {
      return null;

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      if (applyWhere)
      {
        Object whCond = null;
        try
        {
          whCond = whCondEval.evaluate(oRow);
          whCond = whConverter.convert(whCond);
        }
        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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    ExprNodeEvaluator evaluator = ExprNodeEvaluatorFactory
        .get(expr);
    ObjectInspector evaluateResultOI = evaluator
        .initialize(rowWithPartObjectInspector);
    Object evaluateResultO = evaluator.evaluate(rowWithPart);


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

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