Examples of org.apache.hadoop.hive.ql.udf.generic.GenericUDAFResolver

Package org.apache.hadoop.hive.ql.udf.generic

Examples of org.apache.hadoop.hive.ql.udf.generic.GenericUDAFResolver

org.apache.hadoop.hive.ql.udf.generic.GenericUDAFResolver
A Generic User-defined aggregation function (GenericUDAF) for the use with Hive. GenericUDAFResolver is used at compile time. We use GenericUDAFResolver to find out the GenericUDAFEvaluator for the parameter types.

  @SuppressWarnings("deprecation")
  public static GenericUDAFEvaluator getGenericUDAFEvaluator(String name,
      List<TypeInfo> argumentTypeInfos, boolean isDistinct,
      boolean isAllColumns) throws SemanticException {


    GenericUDAFResolver udafResolver = getGenericUDAFResolver(name);
    if (udafResolver == null) {
      return null;
    }


    TypeInfo[] parameters = new TypeInfo[argumentTypeInfos.size()];
    for (int i = 0; i < parameters.length; i++) {
      parameters[i] = argumentTypeInfos.get(i);
    }


    GenericUDAFEvaluator udafEvaluator = null;
    if (udafResolver instanceof GenericUDAFResolver2) {
      GenericUDAFParameterInfo paramInfo =
          new SimpleGenericUDAFParameterInfo(
              parameters, isDistinct, isAllColumns);
      udafEvaluator =
          ((GenericUDAFResolver2) udafResolver).getEvaluator(paramInfo);
    } else {
      udafEvaluator = udafResolver.getEvaluator(parameters);
    }
    return udafEvaluator;
  }

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    }
    FunctionInfo finfo = mFunctions.get(functionName.toLowerCase());
    if (finfo == null) {
      return null;
    }
    GenericUDAFResolver result = finfo.getGenericUDAFResolver();
    return result;
  }

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   * @param argumentTypeInfos
   * @return The UDAF evaluator
   */
  public static GenericUDAFEvaluator getGenericUDAFEvaluator(String name, List<TypeInfo> argumentTypeInfos) 
      throws SemanticException {
    GenericUDAFResolver udaf = getGenericUDAFResolver(name);
    if (udaf == null) return null;


    TypeInfo[] parameters = new TypeInfo[argumentTypeInfos.size()];
    for(int i=0; i<parameters.length; i++) {
      parameters[i] = argumentTypeInfos.get(i);
    }
    return udaf.getEvaluator(parameters);
  }

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    LOG.debug("Looking up GenericUDAF: " + functionName);
    FunctionInfo finfo = mFunctions.get(functionName.toLowerCase());
    if (finfo == null) {
      return null;
    }
    GenericUDAFResolver result = finfo.getGenericUDAFResolver();
    return result;
  }

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  @SuppressWarnings("deprecation")
  public static GenericUDAFEvaluator getGenericUDAFEvaluator(String name,
      List<ObjectInspector> argumentOIs, boolean isDistinct,
      boolean isAllColumns) throws SemanticException {


    GenericUDAFResolver udafResolver = getGenericUDAFResolver(name);
    if (udafResolver == null) {
      return null;
    }


    GenericUDAFEvaluator udafEvaluator = null;
    ObjectInspector args[] = new ObjectInspector[argumentOIs.size()];
    // Can't use toArray here because Java is dumb when it comes to
    // generics + arrays.
    for (int ii = 0; ii < argumentOIs.size(); ++ii) {
      args[ii] = argumentOIs.get(ii);
    }


    GenericUDAFParameterInfo paramInfo =
        new SimpleGenericUDAFParameterInfo(
            args, isDistinct, isAllColumns);
    if (udafResolver instanceof GenericUDAFResolver2) {
      udafEvaluator =
          ((GenericUDAFResolver2) udafResolver).getEvaluator(paramInfo);
    } else {
      udafEvaluator = udafResolver.getEvaluator(paramInfo.getParameters());
    }
    return udafEvaluator;
  }

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    }
    FunctionInfo finfo = mFunctions.get(functionName.toLowerCase());
    if (finfo == null) {
      return null;
    }
    GenericUDAFResolver result = finfo.getGenericUDAFResolver();
    return result;
  }

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  @SuppressWarnings("deprecation")
  public static GenericUDAFEvaluator getGenericUDAFEvaluator(String name,
      List<ObjectInspector> argumentOIs, boolean isDistinct,
      boolean isAllColumns) throws SemanticException {


    GenericUDAFResolver udafResolver = getGenericUDAFResolver(name);
    if (udafResolver == null) {
      return null;
    }


    GenericUDAFEvaluator udafEvaluator = null;
    ObjectInspector args[] = new ObjectInspector[argumentOIs.size()];
    // Can't use toArray here because Java is dumb when it comes to
    // generics + arrays.
    for (int ii = 0; ii < argumentOIs.size(); ++ii) {
      args[ii] = argumentOIs.get(ii);
    }


    GenericUDAFParameterInfo paramInfo =
        new SimpleGenericUDAFParameterInfo(
            args, isDistinct, isAllColumns);
    if (udafResolver instanceof GenericUDAFResolver2) {
      udafEvaluator =
          ((GenericUDAFResolver2) udafResolver).getEvaluator(paramInfo);
    } else {
      udafEvaluator = udafResolver.getEvaluator(paramInfo.getParameters());
    }
    return udafEvaluator;
  }

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    }
    FunctionInfo finfo = mFunctions.get(functionName.toLowerCase());
    if (finfo == null) {
      return null;
    }
    GenericUDAFResolver result = finfo.getGenericUDAFResolver();
    return result;
  }

View Full Code Here

  @SuppressWarnings("deprecation")
  public static GenericUDAFEvaluator getGenericUDAFEvaluator(String name,
      List<ObjectInspector> argumentOIs, boolean isDistinct,
      boolean isAllColumns) throws SemanticException {


    GenericUDAFResolver udafResolver = getGenericUDAFResolver(name);
    if (udafResolver == null) {
      return null;
    }


    GenericUDAFEvaluator udafEvaluator = null;
    ObjectInspector args[] = new ObjectInspector[argumentOIs.size()];
    // Can't use toArray here because Java is dumb when it comes to
    // generics + arrays.
    for (int ii = 0; ii < argumentOIs.size(); ++ii) {
      args[ii] = argumentOIs.get(ii);
    }


    GenericUDAFParameterInfo paramInfo =
        new SimpleGenericUDAFParameterInfo(
            args, isDistinct, isAllColumns);
    if (udafResolver instanceof GenericUDAFResolver2) {
      udafEvaluator =
          ((GenericUDAFResolver2) udafResolver).getEvaluator(paramInfo);
    } else {
      udafEvaluator = udafResolver.getEvaluator(paramInfo.getParameters());
    }
    return udafEvaluator;
  }

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    }
    FunctionInfo finfo = mFunctions.get(functionName.toLowerCase());
    if (finfo == null) {
      return null;
    }
    GenericUDAFResolver result = finfo.getGenericUDAFResolver();
    return result;
  }

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