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], outBytes[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");


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

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    for(int i = 0; i < bytes.length; i++) {
      assertEquals(bytes[i], outBytes[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("bytesField");


    outBytes = (byte[]) oi.getStructFieldData(row, fieldRef);
    for(int i = 0; i < outBytes.length; i++) {
      assertEquals(bytes[i], outBytes[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(fieldName);
    ObjectInspector fieldObjectInspector = fieldRef.getFieldObjectInspector();
    StringObjectInspector soi = (StringObjectInspector)fieldObjectInspector;


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

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    ObjectInspector[] colOIs = new ObjectInspector[inputCols.size()];
    for (int i = 0; i < inputCols.size(); i++) {
      colNames.add(inputCols.get(i).getInternalName());
      colOIs[i] = inputCols.get(i).getObjectInspector();
    }
    StandardStructObjectInspector rowOI =
        ObjectInspectorFactory.getStandardStructObjectInspector(colNames, Arrays.asList(colOIs));
    StructObjectInspector outputOI = genericUDTF.initialize(rowOI);


    int numUdtfCols = outputOI.getAllStructFieldRefs().size();
    if (colAliases.isEmpty()) {

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        List<String> colNames = new ArrayList<String>();
        for (ColumnInfo colInfo: gbyOp.getSchema().getSignature()) {
          colNames.add(colInfo.getInternalName());
        }
        StandardStructObjectInspector sOI = ObjectInspectorFactory.
            getStandardStructObjectInspector(colNames, ois);
        FetchWork fWork = new FetchWork(allRows, sOI);
        FetchTask fTask = (FetchTask)TaskFactory.get(fWork, pctx.getConf());
        fWork.setLimit(allRows.size());
        pctx.setFetchTask(fTask);

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        List<String> colNames = new ArrayList<String>();
        for (ColumnInfo colInfo: gbyOp.getSchema().getSignature()) {
          colNames.add(colInfo.getInternalName());
        }
        StandardStructObjectInspector sOI = ObjectInspectorFactory.
            getStandardStructObjectInspector(colNames, ois);
        FetchWork fWork = new FetchWork(allRows, sOI);
        FetchTask fTask = (FetchTask)TaskFactory.get(fWork, pctx.getConf());
        fWork.setLimit(allRows.size());
        pctx.setFetchTask(fTask);

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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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