Examples of org.apache.hadoop.hive.serde2.objectinspector.StandardStructObjectInspector

Package org.apache.hadoop.hive.serde2.objectinspector

Examples of org.apache.hadoop.hive.serde2.objectinspector.StandardStructObjectInspector

org.apache.hadoop.hive.serde2.objectinspector.StandardStructObjectInspector
ListStructObjectInspector works on struct data that is stored as a Java List or Java Array object. Basically, the fields are stored sequentially in the List object. The names of the struct fields and the internal structure of the struct fields are specified in the ctor of the StructObjectInspector. Always use the ObjectInspectorFactory to create new ObjectInspector objects, instead of directly creating an instance of this class.

    for(int i = 0; i < bytes.length; i++) {
      assertEquals(bytes[i], theList.get(i));
    }


    // Now go the correct way, through objectinspectors
    StandardStructObjectInspector oi = (StandardStructObjectInspector)aoig.getObjectInspector();
    List<Object> fieldsDataAsList = oi.getStructFieldsDataAsList(row);
    assertEquals(1, fieldsDataAsList.size());
    StructField fieldRef = oi.getStructFieldRef("hash");


    List theList2 = (List)oi.getStructFieldData(row, fieldRef);
    for(int i = 0; i < bytes.length; i++) {
      assertEquals(bytes[i], theList2.get(i));
    }
  }

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    assertEquals(1, row.size());
    Object theArrayObject = row.get(0);
    assertTrue(theArrayObject instanceof List);


    // Now go the correct way, through objectinspectors
    StandardStructObjectInspector oi = (StandardStructObjectInspector)aoig.getObjectInspector();
    List<Object> fieldsDataAsList = oi.getStructFieldsDataAsList(row);
    assertEquals(1, fieldsDataAsList.size());
    StructField fieldRef = oi.getStructFieldRef("bytesField");


    List theList2 = (List)oi.getStructFieldData(row, fieldRef);
    for(int i = 0; i < bytes.length; i++) {
      assertEquals(bytes[i], theList2.get(i));
    }
  }

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    assertEquals(3l, theMap.get("three"));
    assertTrue(theMap.containsKey("mu"));
    assertEquals(null, theMap.get("mu"));


    // Verify that the provided object inspector can pull out these same values
    StandardStructObjectInspector oi =
            (StandardStructObjectInspector)aoig.getObjectInspector();


    List<Object> z = oi.getStructFieldsDataAsList(row);
    assertEquals(1, z.size());
    StructField fieldRef = oi.getStructFieldRef("amap");


    Map theMap2 = (Map)oi.getStructFieldData(row, fieldRef);
    assertEquals(1l, theMap2.get("one"));
    assertEquals(2l, theMap2.get("two"));
    assertEquals(3l, theMap2.get("three"));
    assertTrue(theMap2.containsKey("mu"));
    assertEquals(null, theMap2.get("mu"));

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    ArrayList<Object> row =
            (ArrayList<Object>)de.deserialize(aoig.getColumnNames(), aoig.getColumnTypes(), garw, s);
    assertEquals(1, row.size());
    Object rowElement = row.get(0);


    StandardStructObjectInspector oi = (StandardStructObjectInspector)aoig.getObjectInspector();
    List<Object> fieldsDataAsList = oi.getStructFieldsDataAsList(row);
    assertEquals(1, fieldsDataAsList.size());
    StructField fieldRef = oi.getStructFieldRef("nullablestring");
    ObjectInspector fieldObjectInspector = fieldRef.getFieldObjectInspector();
    StringObjectInspector soi = (StringObjectInspector)fieldObjectInspector;


    if(expected == null)
      assertNull(soi.getPrimitiveJavaObject(rowElement));

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        }
      }


      // Add the value to the vector
      // if join-key is null, process each row in different group.
      StandardStructObjectInspector inspector =
          (StandardStructObjectInspector) sf.getFieldObjectInspector();
      if (SerDeUtils.hasAnyNullObject(keyObject, inspector, nullsafes)) {
        endGroup();
        startGroup();
      }

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  }


  @Override
  public void processOp(Object row, int tag) throws HiveException {
    // The UDTF expects arguments in an object[]
    StandardStructObjectInspector soi = (StandardStructObjectInspector) inputObjInspectors[tag];
    List<? extends StructField> fields = soi.getAllStructFieldRefs();


    for (int i = 0; i < fields.size(); i++) {
      objToSendToUDTF[i] = soi.getStructFieldData(row, fields.get(i));
    }


    conf.getGenericUDTF().process(objToSendToUDTF);


  }

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    List<String> newNames = new ArrayList<String>(length);
    for (int i = 0; i < length; i++) {
      String tmp = new String("tmp_" + i);
      newNames.add(tmp);
    }
    StandardStructObjectInspector standardOI = ObjectInspectorFactory
        .getStandardStructObjectInspector(newNames, newFields);


    MapJoinMetaData.put(Integer.valueOf(metadataValueTag[tag]), new HashTableSinkObjectCtx(
        standardOI, valueSerDe, valueTableDesc, hconf));
  }

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  }


  @Override
  public void processOp(Object row, int tag) throws HiveException {
    // The UDTF expects arguments in an object[]
    StandardStructObjectInspector soi = (StandardStructObjectInspector) inputObjInspectors[tag];
    List<? extends StructField> fields = soi.getAllStructFieldRefs();


    for (int i = 0; i < fields.size(); i++) {
      objToSendToUDTF[i] = soi.getStructFieldData(row, fields.get(i));
    }


    conf.getGenericUDTF().process(objToSendToUDTF);


  }

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        }
      }


      // Add the value to the vector
      // if join-key is null, process each row in different group.
      StandardStructObjectInspector inspector =
          (StandardStructObjectInspector) sf.getFieldObjectInspector();
      if (SerDeUtils.hasAnyNullObject(keyObject, inspector, nullsafes)) {
        endGroup();
        startGroup();
      }

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  @Override
  public Writable serialize(Object obj, ObjectInspector oi)
      throws SerDeException {


    StandardStructObjectInspector structOI = (StandardStructObjectInspector) oi;


    // get list of writables, one for each field in the row
    List<Object> fieldWritables = structOI.getStructFieldsDataAsList(obj);


    StringWriter writer = new StringWriter();


    try {
      JsonGenerator jsonGen = jsonFactory.createJsonGenerator(writer);

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