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.

    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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    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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    verifyColumnTypes(expectedColumnTypes, aoig.getColumnTypes());


    // Rip apart the object inspector, making sure we got what we expect.
    final ObjectInspector oi = aoig.getObjectInspector();
    assertTrue(oi instanceof StandardStructObjectInspector);
    final StandardStructObjectInspector ssoi = (StandardStructObjectInspector)oi;
    List<? extends StructField> structFields = ssoi.getAllStructFieldRefs();
    assertEquals(expectedColumnNames.length, structFields.size());


    for(int i = 0; i < expectedColumnNames.length;i++) {
      assertEquals("Column names don't match",
              expectedColumnNames[i].toLowerCase(), structFields.get(i).getFieldName());

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  private void verifyErrorSchemaReturned(Properties props) throws SerDeException {
    AvroSerDe asd = new AvroSerDe();
    asd.initialize(new Configuration(), props);
    assertTrue(asd.getObjectInspector() instanceof StandardStructObjectInspector);
    StandardStructObjectInspector oi = (StandardStructObjectInspector)asd.getObjectInspector();
    List<? extends StructField> allStructFieldRefs = oi.getAllStructFieldRefs();
    assertEquals(SchemaResolutionProblem.SIGNAL_BAD_SCHEMA.getFields().size(), allStructFieldRefs.size());
    StructField firstField = allStructFieldRefs.get(0);
    assertTrue(firstField.toString().contains("error_error_error_error_error_error_error"));


    try {

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            aoig.getColumnTypes(), garw, s);
    assertEquals(1, row.size());
    Object theVoidObject = row.get(0);
    assertNull(theVoidObject);


    StandardStructObjectInspector oi = (StandardStructObjectInspector)aoig.getObjectInspector();
    StructField fieldRef = oi.getStructFieldRef("isANull");


    Object shouldBeNull = oi.getStructFieldData(row, fieldRef);
    assertNull(shouldBeNull);
    assertTrue(fieldRef.getFieldObjectInspector() instanceof VoidObjectInspector);
  }

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    assertEquals(1l, theMap.get("one"));
    assertEquals(2l, theMap.get("two"));
    assertEquals(3l, theMap.get("three"));


    // 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"));
  }

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    assertEquals("Eccleston", theList.get(0));
    assertEquals("Tennant", theList.get(1));
    assertEquals("Smith", theList.get(2));


    // Now go the correct way, through objectinspectors
    StandardStructObjectInspector oi =
            (StandardStructObjectInspector)aoig.getObjectInspector();
    StructField fieldRefToArray = oi.getStructFieldRef("anArray");


    Object anArrayData = oi.getStructFieldData(row, fieldRefToArray);
    StandardListObjectInspector anArrayOI =
            (StandardListObjectInspector)fieldRefToArray.getFieldObjectInspector();
    assertEquals(3, anArrayOI.getListLength(anArrayData));


    JavaStringObjectInspector elementOI =

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    Object theRecordObject = row.get(0);
    System.out.println("theRecordObject = " + theRecordObject.getClass().getCanonicalName());


    // The original record was lost in the deserialization, so just go the
    // correct way, through objectinspectors
    StandardStructObjectInspector oi = (StandardStructObjectInspector)aoig.getObjectInspector();
    List<? extends StructField> allStructFieldRefs = oi.getAllStructFieldRefs();
    assertEquals(1, allStructFieldRefs.size());
    StructField fieldRefForaRecord = allStructFieldRefs.get(0);
    assertEquals("arecord", fieldRefForaRecord.getFieldName());
    Object innerRecord2 = oi.getStructFieldData(row, fieldRefForaRecord);


    // Extract innerRecord field refs
    StandardStructObjectInspector innerRecord2OI =
            (StandardStructObjectInspector) fieldRefForaRecord.getFieldObjectInspector();


    List<? extends StructField> allStructFieldRefs1 = innerRecord2OI.getAllStructFieldRefs();
    assertEquals(3, allStructFieldRefs1.size());
    assertEquals("int1", allStructFieldRefs1.get(0).getFieldName());
    assertEquals("boolean1", allStructFieldRefs1.get(1).getFieldName());
    assertEquals("long1", allStructFieldRefs1.get(2).getFieldName());


    innerRecord2OI.getStructFieldsDataAsList(innerRecord2);
    assertEquals(42, innerRecord2OI.getStructFieldData(innerRecord2, allStructFieldRefs1.get(0)));
    assertEquals(true, innerRecord2OI.getStructFieldData(innerRecord2, allStructFieldRefs1.get(1)));
    assertEquals(42432234234l, innerRecord2OI.getStructFieldData(innerRecord2, allStructFieldRefs1.get(2)));
  }

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    AvroDeserializer de = new AvroDeserializer();
    ArrayList<Object> row =
            (ArrayList<Object>)de.deserialize(aoig.getColumnNames(), aoig.getColumnTypes(), garw, s);
    assertEquals(1, row.size());
    StandardStructObjectInspector oi = (StandardStructObjectInspector)aoig.getObjectInspector();
    List<? extends StructField> fieldRefs = oi.getAllStructFieldRefs();
    assertEquals(1, fieldRefs.size());
    StructField fieldRef = fieldRefs.get(0);
    assertEquals("aunion", fieldRef.getFieldName());
    Object theUnion = oi.getStructFieldData(row, fieldRef);


    assertTrue(fieldRef.getFieldObjectInspector() instanceof UnionObjectInspector);
    UnionObjectInspector fieldObjectInspector =
            (UnionObjectInspector)fieldRef.getFieldObjectInspector();
    Object value = fieldObjectInspector.getField(theUnion);

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    AvroDeserializer de = new AvroDeserializer();
    ArrayList<Object> row =
            (ArrayList<Object>)de.deserialize(aoig.getColumnNames(), aoig.getColumnTypes(), garw, s);
    assertEquals(1, row.size());
    StandardStructObjectInspector oi = (StandardStructObjectInspector)aoig.getObjectInspector();
    List<? extends StructField> fieldRefs = oi.getAllStructFieldRefs();
    assertEquals(1, fieldRefs.size());
    StructField fieldRef = fieldRefs.get(0);


    assertEquals("baddies", fieldRef.getFieldName());


    Object theStringObject = oi.getStructFieldData(row, fieldRef);
    assertTrue(fieldRef.getFieldObjectInspector() instanceof StringObjectInspector);
    StringObjectInspector soi = (StringObjectInspector)fieldRef.getFieldObjectInspector();


    String finalValue = soi.getPrimitiveJavaObject(theStringObject);
    assertEquals("DALEKS", finalValue);

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