Package org.apache.hadoop.hive.ql.plan

Examples of org.apache.hadoop.hive.ql.plan.exprNodeConstantDesc

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  public void testExprNodeConversionEvaluator() throws Throwable {
    try {
      // get a evaluator for a string concatenation expression
      exprNodeDesc col1desc = new exprNodeColumnDesc(col1Type, "col1");
      exprNodeDesc col11desc = new exprNodeIndexDesc(col1desc, new exprNodeConstantDesc(new Integer(1)));
      exprNodeDesc func1 = TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc(Double.class.getName(), col11desc);
      ExprNodeEvaluator eval = ExprNodeEvaluatorFactory.get(func1);

      // evaluate on row
      InspectableObject result = new InspectableObject();
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      int basetimes = 100000;
      measureSpeed("1 + 2",
          basetimes * 100,
          ExprNodeEvaluatorFactory.get(
              TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("+",
                  new exprNodeConstantDesc(1),
                  new exprNodeConstantDesc(2))),
          r,
          Integer.valueOf(1 + 2));
      measureSpeed("1 + 2 - 3",
          basetimes * 100,
          ExprNodeEvaluatorFactory.get(
              TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("-",
                  TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("+",
                      new exprNodeConstantDesc(1),
                      new exprNodeConstantDesc(2)),
                  new exprNodeConstantDesc(3))),
          r,
          Integer.valueOf(1 + 2 - 3));
      measureSpeed("1 + 2 - 3 + 4",
          basetimes * 100,
          ExprNodeEvaluatorFactory.get(
              TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("+",
                  TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("-",
                      TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("+",
                          new exprNodeConstantDesc(1),
                          new exprNodeConstantDesc(2)),
                      new exprNodeConstantDesc(3)),
                  new exprNodeConstantDesc(4))),                     
          r,
          Integer.valueOf(1 + 2 - 3 + 4));
      measureSpeed("concat(\"1\", \"2\")",
          basetimes * 100,
          ExprNodeEvaluatorFactory.get(
              TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("concat",
                  new exprNodeConstantDesc("1"),
                  new exprNodeConstantDesc("2"))),
          r,
          "12");
      measureSpeed("concat(concat(\"1\", \"2\"), \"3\")",
          basetimes * 100,
          ExprNodeEvaluatorFactory.get(
              TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("concat",
                  TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("concat",
                      new exprNodeConstantDesc("1"),
                      new exprNodeConstantDesc("2")),
                  new exprNodeConstantDesc("3"))),
          r,
          "123");
      measureSpeed("concat(concat(concat(\"1\", \"2\"), \"3\"), \"4\")",
          basetimes * 100,
          ExprNodeEvaluatorFactory.get(
              TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("concat",
                TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("concat",
                    TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("concat",
                        new exprNodeConstantDesc("1"),
                        new exprNodeConstantDesc("2")),
                    new exprNodeConstantDesc("3")),
                new exprNodeConstantDesc("4"))),
          r,
          "1234");
      exprNodeDesc constant1 = new exprNodeConstantDesc(1);
      exprNodeDesc constant2 = new exprNodeConstantDesc(2);
      measureSpeed("concat(col1[1], cola[1])",
          basetimes * 10,
          ExprNodeEvaluatorFactory.get(
              TypeCheckProcFactory.DefaultExprProcessor.getFuncExprNodeDesc("concat",
                  new exprNodeIndexDesc(new exprNodeColumnDesc(col1Type, "col1"), constant1),
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        // do nothing here, we will throw an exception in the following block
      }
      if (v == null) {
        throw new SemanticException(ErrorMsg.INVALID_NUMERICAL_CONSTANT.getMsg(expr));
      }
      return new exprNodeConstantDesc(v);
    }
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      default:
        // HiveParser.identifier | HiveParse.KW_IF | HiveParse.KW_LEFT | HiveParse.KW_RIGHT
        str = BaseSemanticAnalyzer.unescapeIdentifier(expr.getText());
        break;
      }
      return new exprNodeConstantDesc(TypeInfoFactory.stringTypeInfo, str);
    }
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        bool = Boolean.FALSE;
        break;
      default:
        assert false;
      }
      return new exprNodeConstantDesc(TypeInfoFactory.booleanTypeInfo, bool);     
    }
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        // "." :  FIELD Expression
        assert(children.size() == 2);
        // Only allow constant field name for now
        assert(children.get(1) instanceof exprNodeConstantDesc);
        exprNodeDesc object = children.get(0);
        exprNodeConstantDesc fieldName = (exprNodeConstantDesc)children.get(1);
        assert(fieldName.getValue() instanceof String);
       
        // Calculate result TypeInfo
        String fieldNameString = (String)fieldName.getValue();
        TypeInfo objectTypeInfo = object.getTypeInfo();
       
        // Allow accessing a field of list element structs directly from a list 
        boolean isList = (object.getTypeInfo().getCategory() == ObjectInspector.Category.LIST);
        if (isList) {
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      exprNodeColumnDesc cd = (exprNodeColumnDesc) nd;
      ExprProcCtx epc = (ExprProcCtx) procCtx;
      if (cd.getTabAlias().equalsIgnoreCase(epc.getTabAlias()) && cd.getIsParititonCol())
        newcd = cd.clone();
      else {
        newcd = new exprNodeConstantDesc(cd.getTypeInfo(), null);
        epc.setHasNonPartCols(true);
      }
     
      return newcd;
    }
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          }
        }
      }
     
      if (unknown)
        newfd = new exprNodeConstantDesc(fd.getTypeInfo(), null);
      else {
        // Create the list of children
        ArrayList<exprNodeDesc> children = new ArrayList<exprNodeDesc>();
        for(Object child: nodeOutputs) {
          children.add((exprNodeDesc) child);
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      assert(idx == 0);

      exprNodeDesc newnd = null;
      if (unknown) {
        newnd = new exprNodeConstantDesc(fnd.getTypeInfo(), null);
      }
      else {
        newnd = new exprNodeFieldDesc(fnd.getTypeInfo(), left_nd, fnd.getFieldName(), fnd.getIsList());
      }
      return newnd;
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    ArrayList<String> columnNames = new ArrayList<String>();
    Map<String, exprNodeDesc> colExprMap = new HashMap<String, exprNodeDesc>();
    for (int i=0; i<col_list.size(); i++) {
      // Replace NULL with CAST(NULL AS STRING)
      if (col_list.get(i) instanceof exprNodeNullDesc) {
        col_list.set(i, new exprNodeConstantDesc(TypeInfoFactory.stringTypeInfo, null));
      }
      String outputCol = getColumnInternalName(i);
      colExprMap.put(outputCol, col_list.get(i));
      columnNames.add(outputCol);
    }
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