Examples of org.apache.hadoop.hbase.thrift2.generated.TGet$TGetStandardSchemeFactory

Package org.apache.hadoop.hbase.thrift2.generated

Examples of org.apache.hadoop.hbase.thrift2.generated.TGet$TGetStandardSchemeFactory

org.apache.hadoop.hbase.thrift2.generated.TGet
Used to perform Get operations on a single row. The scope can be further narrowed down by specifying a list of columns or column families. To get everything for a row, instantiate a Get object with just the row to get. To further define the scope of what to get you can add a timestamp or time range with an optional maximum number of versions to return. If you specify a time range and a timestamp the range is ignored. Timestamps on TColumns are ignored.

  public void testExists() throws TIOError, TException {
    ThriftHBaseServiceHandler handler = createHandler();
    byte[] rowName = "testExists".getBytes();
    ByteBuffer table = wrap(tableAname);


    TGet get = new TGet(wrap(rowName));
    assertFalse(handler.exists(table, get));


    List<TColumnValue> columnValues = new ArrayList<TColumnValue>();
    columnValues.add(new TColumnValue(wrap(familyAname), wrap(qualifierAname), wrap(valueAname)));
    columnValues.add(new TColumnValue(wrap(familyBname), wrap(qualifierBname), wrap(valueBname)));

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    put.setColumnValues(columnValues);


    handler.put(table, put);


    TGet get = new TGet(wrap(rowName));


    TResult result = handler.get(table, get);
    assertArrayEquals(rowName, result.getRow());
    List<TColumnValue> returnedColumnValues = result.getColumnValues();
    assertTColumnValuesEqual(columnValues, returnedColumnValues);

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    puts.add(new TPut(wrap(rowName2), columnValues));


    handler.putMultiple(table, puts);


    List<TGet> gets = new ArrayList<TGet>();
    gets.add(new TGet(wrap(rowName1)));
    gets.add(new TGet(wrap(rowName2)));


    List<TResult> results = handler.getMultiple(table, gets);
    assertEquals(2, results.size());


    assertArrayEquals(rowName1, results.get(0).getRow());

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    List<TDelete> deleteResults = handler.deleteMultiple(table, deletes);
    // 0 means they were all successfully applies
    assertEquals(0, deleteResults.size());


    assertFalse(handler.exists(table, new TGet(wrap(rowName1))));
    assertFalse(handler.exists(table, new TGet(wrap(rowName2))));
  }

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    deleteColumns.add(deleteColumn);
    delete.setColumns(deleteColumns);


    handler.deleteSingle(table, delete);


    TGet get = new TGet(wrap(rowName));
    TResult result = handler.get(table, get);
    assertArrayEquals(rowName, result.getRow());
    List<TColumnValue> returnedColumnValues = result.getColumnValues();
    List<TColumnValue> expectedColumnValues = new ArrayList<TColumnValue>();
    expectedColumnValues.add(columnValueB);

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    handler.put(table, put);
    columnValueA.setTimestamp(System.currentTimeMillis());
    handler.put(table, put);


    TGet get = new TGet(wrap(rowName));
    get.setMaxVersions(2);
    TResult result = handler.get(table, get);
    assertEquals(2, result.getColumnValuesSize());


    TDelete delete = new TDelete(wrap(rowName));
    List<TColumn> deleteColumns = new ArrayList<TColumn>();
    TColumn deleteColumn = new TColumn(wrap(familyAname));
    deleteColumn.setQualifier(qualifierAname);
    deleteColumns.add(deleteColumn);
    delete.setColumns(deleteColumns);
    delete.setDeleteType(TDeleteType.DELETE_COLUMNS); // This is the default anyway.


    handler.deleteSingle(table, delete);


    get = new TGet(wrap(rowName));
    result = handler.get(table, get);
    assertNull(result.getRow());
    assertEquals(0, result.getColumnValuesSize());
  }

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    handler.put(table, put);
    columnValueA.setTimestamp(timestamp2);
    handler.put(table, put);


    TGet get = new TGet(wrap(rowName));
    get.setMaxVersions(2);
    TResult result = handler.get(table, get);
    assertEquals(2, result.getColumnValuesSize());


    TDelete delete = new TDelete(wrap(rowName));
    List<TColumn> deleteColumns = new ArrayList<TColumn>();
    TColumn deleteColumn = new TColumn(wrap(familyAname));
    deleteColumn.setQualifier(qualifierAname);
    deleteColumns.add(deleteColumn);
    delete.setColumns(deleteColumns);
    delete.setDeleteType(TDeleteType.DELETE_COLUMN);


    handler.deleteSingle(table, delete);


    get = new TGet(wrap(rowName));
    result = handler.get(table, get);
    assertArrayEquals(rowName, result.getRow());
    assertEquals(1, result.getColumnValuesSize());
    // the older timestamp should remain.
    assertEquals(timestamp1, result.getColumnValues().get(0).getTimestamp());

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    List<TColumnIncrement> incrementColumns = new ArrayList<TColumnIncrement>();
    incrementColumns.add(new TColumnIncrement(wrap(familyAname), wrap(qualifierAname)));
    TIncrement increment = new TIncrement(wrap(rowName), incrementColumns);
    handler.increment(table, increment);


    TGet get = new TGet(wrap(rowName));
    TResult result = handler.get(table, get);


    assertArrayEquals(rowName, result.getRow());
    assertEquals(1, result.getColumnValuesSize());
    TColumnValue columnValue = result.getColumnValues().get(0);

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    putB.setColumnValues(columnValuesB);


    assertFalse(handler.checkAndPut(table, wrap(rowName), wrap(familyAname),
      wrap(qualifierAname), wrap(valueAname), putB));


    TGet get = new TGet(wrap(rowName));
    TResult result = handler.get(table, get);
    assertEquals(0, result.getColumnValuesSize());


    handler.put(table, putA);

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    TDelete delete = new TDelete(wrap(rowName));


    assertFalse(handler.checkAndDelete(table, wrap(rowName), wrap(familyAname),
      wrap(qualifierAname), wrap(valueAname), delete));


    TGet get = new TGet(wrap(rowName));
    TResult result = handler.get(table, get);
    assertArrayEquals(rowName, result.getRow());
    assertTColumnValuesEqual(columnValuesB, result.getColumnValues());


    handler.put(table, putA);

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