Package org.apache.tajo.engine.eval

Examples of org.apache.tajo.engine.eval.AggregationFunctionCallEval$AggFunctionCtx

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  }

  private AggregationFunctionCallEval createSumFunction(EvalNode [] args) throws InternalException {
    FunctionDesc functionDesc = getCatalog().getFunction("sum", CatalogProtos.FunctionType.AGGREGATION,
        args[0].getValueType());
    return new AggregationFunctionCallEval(functionDesc, (AggFunction) functionDesc.newInstance(), args);
  }
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  }

  private AggregationFunctionCallEval createCountFunction(EvalNode [] args) throws InternalException {
    FunctionDesc functionDesc = getCatalog().getFunction("count", CatalogProtos.FunctionType.AGGREGATION,
        args[0].getValueType());
    return new AggregationFunctionCallEval(functionDesc, (AggFunction) functionDesc.newInstance(), args);
  }
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  }

  private AggregationFunctionCallEval createCountRowFunction(EvalNode[] args) throws InternalException {
    FunctionDesc functionDesc = getCatalog().getFunction("count", CatalogProtos.FunctionType.AGGREGATION,
        new TajoDataTypes.DataType[]{});
    return new AggregationFunctionCallEval(functionDesc, (AggFunction) functionDesc.newInstance(), args);
  }
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  }

  private AggregationFunctionCallEval createMaxFunction(EvalNode [] args) throws InternalException {
    FunctionDesc functionDesc = getCatalog().getFunction("max", CatalogProtos.FunctionType.AGGREGATION,
        args[0].getValueType());
    return new AggregationFunctionCallEval(functionDesc, (AggFunction) functionDesc.newInstance(), args);
  }
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  }

  private AggregationFunctionCallEval createMinFunction(EvalNode [] args) throws InternalException {
    FunctionDesc functionDesc = getCatalog().getFunction("min", CatalogProtos.FunctionType.AGGREGATION,
        args[0].getValueType());
    return new AggregationFunctionCallEval(functionDesc, (AggFunction) functionDesc.newInstance(), args);
  }
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