Examples of org.apache.hadoop.hive.ql.udf.generic.GenericUDF.initialize()

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

Class org.apache.hadoop.hive.ql.udf.generic.GenericUDF

Examples of org.apache.hadoop.hive.ql.udf.generic.GenericUDF.initialize()

org.apache.hadoop.hive.ql.udf.generic.GenericUDF.initialize()
Initialize this GenericUDF. This will be called once and only once per GenericUDF instance. @param arguments The ObjectInspector for the arguments @throws UDFArgumentException Thrown when arguments have wrong types, wrong length, etc. @return The ObjectInspector for the return value

      childrenOIs[i] = TypeInfoUtils.getStandardWritableObjectInspectorFromTypeInfo(
          children.get(i).getTypeInfo());
    }
    GenericUDF genericUDF = (GenericUDF) ReflectionUtils.newInstance(genericUDFClass, null);
    
    ObjectInspector oi = genericUDF.initialize(childrenOIs);
    return new exprNodeGenericFuncDesc(TypeInfoUtils.getTypeInfoFromObjectInspector(oi),
        genericUDFClass, children);
  }
  
  @Override

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                                              ObjectInspector[] argOIs) {
    // probe UDF to find if the arg types and acceptable
    // if acceptable create a holder object
    try {
      GenericUDF udfInstance = udfClazz.newInstance();
      ObjectInspector returnOI = udfInstance.initialize(argOIs);
      return new HiveFuncHolder(
        udfClazz,
        argTypes,
        returnOI,
        Types.optional(ObjectInspectorHelper.getDrillType(returnOI)),

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                                                 Class<? extends UDF> udfClazz,
                                                 MajorType[] argTypes,
                                                 ObjectInspector[] argOIs) {
    try {
      GenericUDF udfInstance = new GenericUDFBridge(udfName, false/* is operator */, udfClazz);
      ObjectInspector returnOI = udfInstance.initialize(argOIs);


      return new HiveFuncHolder(
        udfName,
        udfClazz,
        argTypes,

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                                              ObjectInspector[] argOIs) {
    // probe UDF to find if the arg types and acceptable
    // if acceptable create a holder object
    try {
      GenericUDF udfInstance = udfClazz.newInstance();
      ObjectInspector returnOI = udfInstance.initialize(argOIs);
      return new HiveFuncHolder(
        udfClazz,
        argTypes,
        returnOI,
        Types.optional(ObjectInspectorHelper.getDrillType(returnOI)),

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                                                 Class<? extends UDF> udfClazz,
                                                 MajorType[] argTypes,
                                                 ObjectInspector[] argOIs) {
    try {
      GenericUDF udfInstance = new GenericUDFBridge(udfName, false/* is operator */, udfClazz);
      ObjectInspector returnOI = udfInstance.initialize(argOIs);


      return new HiveFuncHolder(
        udfName,
        udfClazz,
        argTypes,

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