Java TColumn.setFamily方法代码示例

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
public static TDelete deleteFromHBase(Delete in) {
  TDelete out = new TDelete(ByteBuffer.wrap(in.getRow()));

  List<TColumn> columns = new ArrayList<TColumn>();
  long rowTimestamp = in.getTimeStamp();
  if (rowTimestamp != HConstants.LATEST_TIMESTAMP) {
    out.setTimestamp(rowTimestamp);
  }

  // Map<family, List<KeyValue>>
  for (Map.Entry<byte[], List<org.apache.hadoop.hbase.Cell>> familyEntry:
      in.getFamilyCellMap().entrySet()) {
    TColumn column = new TColumn(ByteBuffer.wrap(familyEntry.getKey()));
    for (org.apache.hadoop.hbase.Cell cell: familyEntry.getValue()) {
      byte[] family = CellUtil.cloneFamily(cell);
      byte[] qualifier = CellUtil.cloneQualifier(cell);
      long timestamp = cell.getTimestamp();
      if (family != null) {
        column.setFamily(family);
      }
      if (qualifier != null) {
        column.setQualifier(qualifier);
      }
      if (timestamp != HConstants.LATEST_TIMESTAMP) {
        column.setTimestamp(timestamp);
      }
    }
    columns.add(column);
  }
  out.setColumns(columns);

  return out;
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
public static TDelete deleteFromHBase(Delete in) {
  TDelete out = new TDelete(ByteBuffer.wrap(in.getRow()));

  List<TColumn> columns = new ArrayList<TColumn>();
  long rowTimestamp = in.getTimeStamp();
  if (rowTimestamp != HConstants.LATEST_TIMESTAMP) {
    out.setTimestamp(rowTimestamp);
  }

  // Map<family, List<KeyValue>>
  for (Map.Entry<byte[], List<org.apache.hadoop.hbase.Cell>> familyEntry:
      in.getFamilyCellMap().entrySet()) {
    TColumn column = new TColumn(ByteBuffer.wrap(familyEntry.getKey()));
    for (org.apache.hadoop.hbase.Cell cell: familyEntry.getValue()) {
      KeyValue kv = KeyValueUtil.ensureKeyValue(cell);
      byte[] family = kv.getFamily();
      byte[] qualifier = kv.getQualifier();
      long timestamp = kv.getTimestamp();
      if (family != null) {
        column.setFamily(family);
      }
      if (qualifier != null) {
        column.setQualifier(qualifier);
      }
      if (timestamp != HConstants.LATEST_TIMESTAMP) {
        column.setTimestamp(kv.getTimestamp());
      }
    }
    columns.add(column);
  }
  out.setColumns(columns);

  return out;
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
public static TDelete deleteFromHBase(Delete in) {
  TDelete out = new TDelete(ByteBuffer.wrap(in.getRow()));

  List<TColumn> columns = new ArrayList<>(in.getFamilyCellMap().entrySet().size());
  long rowTimestamp = in.getTimeStamp();
  if (rowTimestamp != HConstants.LATEST_TIMESTAMP) {
    out.setTimestamp(rowTimestamp);
  }

  // Map<family, List<KeyValue>>
  for (Map.Entry<byte[], List<org.apache.hadoop.hbase.Cell>> familyEntry:
      in.getFamilyCellMap().entrySet()) {
    TColumn column = new TColumn(ByteBuffer.wrap(familyEntry.getKey()));
    for (org.apache.hadoop.hbase.Cell cell: familyEntry.getValue()) {
      byte[] family = CellUtil.cloneFamily(cell);
      byte[] qualifier = CellUtil.cloneQualifier(cell);
      long timestamp = cell.getTimestamp();
      if (family != null) {
        column.setFamily(family);
      }
      if (qualifier != null) {
        column.setQualifier(qualifier);
      }
      if (timestamp != HConstants.LATEST_TIMESTAMP) {
        column.setTimestamp(timestamp);
      }
    }
    columns.add(column);
  }
  out.setColumns(columns);

  return out;
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
@Test
public void testScanWithVisibilityLabels() throws Exception {
  ThriftHBaseServiceHandler handler = createHandler();
  ByteBuffer table = wrap(tableAname);

  // insert data
  TColumnValue columnValue = new TColumnValue(wrap(familyAname),
      wrap(qualifierAname), wrap(valueAname));
  List<TColumnValue> columnValues = new ArrayList<TColumnValue>();
  columnValues.add(columnValue);
  for (int i = 0; i < 10; i++) {
    TPut put = new TPut(wrap(("testScan" + i).getBytes()), columnValues);
    if (i == 5) {
      put.setCellVisibility(new TCellVisibility().setExpression(PUBLIC));
    } else {
      put.setCellVisibility(new TCellVisibility().setExpression("(" + SECRET
          + "|" + CONFIDENTIAL + ")" + "&" + "!" + TOPSECRET));
    }
    handler.put(table, put);
  }

  // create scan instance
  TScan scan = new TScan();
  List<TColumn> columns = new ArrayList<TColumn>();
  TColumn column = new TColumn();
  column.setFamily(familyAname);
  column.setQualifier(qualifierAname);
  columns.add(column);
  scan.setColumns(columns);
  scan.setStartRow("testScan".getBytes());
  scan.setStopRow("testScan\uffff".getBytes());

  TAuthorization tauth = new TAuthorization();
  List<String> labels = new ArrayList<String>();
  labels.add(SECRET);
  labels.add(PRIVATE);
  tauth.setLabels(labels);
  scan.setAuthorizations(tauth);
  // get scanner and rows
  int scanId = handler.openScanner(table, scan);
  List<TResult> results = handler.getScannerRows(scanId, 10);
  assertEquals(9, results.size());
  Assert.assertFalse(Bytes.equals(results.get(5).getRow(),
      ("testScan" + 5).getBytes()));
  for (int i = 0; i < 9; i++) {
    if (i < 5) {
      assertArrayEquals(("testScan" + i).getBytes(), results.get(i).getRow());
    } else if (i == 5) {
      continue;
    } else {
      assertArrayEquals(("testScan" + (i + 1)).getBytes(), results.get(i)
          .getRow());
    }
  }

  // check that we are at the end of the scan
  results = handler.getScannerRows(scanId, 9);
  assertEquals(0, results.size());

  // close scanner and check that it was indeed closed
  handler.closeScanner(scanId);
  try {
    handler.getScannerRows(scanId, 9);
    fail("Scanner id should be invalid");
  } catch (TIllegalArgument e) {
  }
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
@Test
public void testGetScannerResultsWithAuthorizations() throws Exception {
  ThriftHBaseServiceHandler handler = createHandler();
  ByteBuffer table = wrap(tableAname);

  // insert data
  TColumnValue columnValue = new TColumnValue(wrap(familyAname),
      wrap(qualifierAname), wrap(valueAname));
  List<TColumnValue> columnValues = new ArrayList<TColumnValue>();
  columnValues.add(columnValue);
  for (int i = 0; i < 20; i++) {
    TPut put = new TPut(
        wrap(("testGetScannerResults" + pad(i, (byte) 2)).getBytes()),
        columnValues);
    if (i == 3) {
      put.setCellVisibility(new TCellVisibility().setExpression(PUBLIC));
    } else {
      put.setCellVisibility(new TCellVisibility().setExpression("(" + SECRET
          + "|" + CONFIDENTIAL + ")" + "&" + "!" + TOPSECRET));
    }
    handler.put(table, put);
  }

  // create scan instance
  TScan scan = new TScan();
  List<TColumn> columns = new ArrayList<TColumn>();
  TColumn column = new TColumn();
  column.setFamily(familyAname);
  column.setQualifier(qualifierAname);
  columns.add(column);
  scan.setColumns(columns);
  scan.setStartRow("testGetScannerResults".getBytes());

  // get 5 rows and check the returned results
  scan.setStopRow("testGetScannerResults05".getBytes());
  TAuthorization tauth = new TAuthorization();
  List<String> labels = new ArrayList<String>();
  labels.add(SECRET);
  labels.add(PRIVATE);
  tauth.setLabels(labels);
  scan.setAuthorizations(tauth);
  List<TResult> results = handler.getScannerResults(table, scan, 5);
  assertEquals(4, results.size());
  for (int i = 0; i < 4; i++) {
    if (i < 3) {
      assertArrayEquals(
          ("testGetScannerResults" + pad(i, (byte) 2)).getBytes(),
          results.get(i).getRow());
    } else if (i == 3) {
      continue;
    } else {
      assertArrayEquals(
          ("testGetScannerResults" + pad(i + 1, (byte) 2)).getBytes(), results
              .get(i).getRow());
    }
  }
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
@Test
public void testScan() throws Exception {
  ThriftHBaseServiceHandler handler = createHandler();
  ByteBuffer table = wrap(tableAname);

  // insert data
  TColumnValue columnValue = new TColumnValue(wrap(familyAname), wrap(qualifierAname),
    wrap(valueAname));
  List<TColumnValue> columnValues = new ArrayList<TColumnValue>();
  columnValues.add(columnValue);
  for (int i = 0; i < 10; i++) {
    TPut put = new TPut(wrap(("testScan" + i).getBytes()), columnValues);
    handler.put(table, put);
  }

  // create scan instance
  TScan scan = new TScan();
  List<TColumn> columns = new ArrayList<TColumn>();
  TColumn column = new TColumn();
  column.setFamily(familyAname);
  column.setQualifier(qualifierAname);
  columns.add(column);
  scan.setColumns(columns);
  scan.setStartRow("testScan".getBytes());
  scan.setStopRow("testScan\uffff".getBytes());

  // get scanner and rows
  int scanId = handler.openScanner(table, scan);
  List<TResult> results = handler.getScannerRows(scanId, 10);
  assertEquals(10, results.size());
  for (int i = 0; i < 10; i++) {
    // check if the rows are returned and in order
    assertArrayEquals(("testScan" + i).getBytes(), results.get(i).getRow());
  }

  // check that we are at the end of the scan
  results = handler.getScannerRows(scanId, 10);
  assertEquals(0, results.size());

  // close scanner and check that it was indeed closed
  handler.closeScanner(scanId);
  try {
    handler.getScannerRows(scanId, 10);
    fail("Scanner id should be invalid");
  } catch (TIllegalArgument e) {
  }
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
@Test
public void testReverseScan() throws Exception {
  ThriftHBaseServiceHandler handler = createHandler();
  ByteBuffer table = wrap(tableAname);

  // insert data
  TColumnValue columnValue = new TColumnValue(wrap(familyAname), wrap(qualifierAname),
    wrap(valueAname));
  List<TColumnValue> columnValues = new ArrayList<TColumnValue>();
  columnValues.add(columnValue);
  for (int i = 0; i < 10; i++) {
    TPut put = new TPut(wrap(("testReverseScan" + i).getBytes()), columnValues);
    handler.put(table, put);
  }

  // create reverse scan instance
  TScan scan = new TScan();
  scan.setReversed(true);
  List<TColumn> columns = new ArrayList<TColumn>();
  TColumn column = new TColumn();
  column.setFamily(familyAname);
  column.setQualifier(qualifierAname);
  columns.add(column);
  scan.setColumns(columns);
  scan.setStartRow("testReverseScan\uffff".getBytes());
  scan.setStopRow("testReverseScan".getBytes());

  // get scanner and rows
  int scanId = handler.openScanner(table, scan);
  List<TResult> results = handler.getScannerRows(scanId, 10);
  assertEquals(10, results.size());
  for (int i = 0; i < 10; i++) {
    // check if the rows are returned and in order
    assertArrayEquals(("testReverseScan" + (9 - i)).getBytes(), results.get(i).getRow());
  }

  // check that we are at the end of the scan
  results = handler.getScannerRows(scanId, 10);
  assertEquals(0, results.size());

  // close scanner and check that it was indeed closed
  handler.closeScanner(scanId);
  try {
    handler.getScannerRows(scanId, 10);
    fail("Scanner id should be invalid");
  } catch (TIllegalArgument e) {
  }
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
@Test
public void testScanWithFilter() throws Exception {
  ThriftHBaseServiceHandler handler = createHandler();
  ByteBuffer table = wrap(tableAname);

  // insert data
  TColumnValue columnValue = new TColumnValue(wrap(familyAname), wrap(qualifierAname),
    wrap(valueAname));
  List<TColumnValue> columnValues = new ArrayList<TColumnValue>();
  columnValues.add(columnValue);
  for (int i = 0; i < 10; i++) {
    TPut put = new TPut(wrap(("testScanWithFilter" + i).getBytes()), columnValues);
    handler.put(table, put);
  }

  // create scan instance with filter
  TScan scan = new TScan();
  List<TColumn> columns = new ArrayList<TColumn>();
  TColumn column = new TColumn();
  column.setFamily(familyAname);
  column.setQualifier(qualifierAname);
  columns.add(column);
  scan.setColumns(columns);
  scan.setStartRow("testScanWithFilter".getBytes());
  scan.setStopRow("testScanWithFilter\uffff".getBytes());
  // only get the key part
  scan.setFilterString(wrap(("KeyOnlyFilter()").getBytes()));

  // get scanner and rows
  int scanId = handler.openScanner(table, scan);
  List<TResult> results = handler.getScannerRows(scanId, 10);
  assertEquals(10, results.size());
  for (int i = 0; i < 10; i++) {
    // check if the rows are returned and in order
    assertArrayEquals(("testScanWithFilter" + i).getBytes(), results.get(i).getRow());
    // check that the value is indeed stripped by the filter
    assertEquals(0, results.get(i).getColumnValues().get(0).getValue().length);
  }

  // check that we are at the end of the scan
  results = handler.getScannerRows(scanId, 10);
  assertEquals(0, results.size());

  // close scanner and check that it was indeed closed
  handler.closeScanner(scanId);
  try {
    handler.getScannerRows(scanId, 10);
    fail("Scanner id should be invalid");
  } catch (TIllegalArgument e) {
  }
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
@Test
public void testGetScannerResults() throws Exception {
  ThriftHBaseServiceHandler handler = createHandler();
  ByteBuffer table = wrap(tableAname);

  // insert data
  TColumnValue columnValue =
      new TColumnValue(wrap(familyAname), wrap(qualifierAname), wrap(valueAname));
  List<TColumnValue> columnValues = new ArrayList<TColumnValue>();
  columnValues.add(columnValue);
  for (int i = 0; i < 20; i++) {
    TPut put =
        new TPut(wrap(("testGetScannerResults" + pad(i, (byte) 2)).getBytes()), columnValues);
    handler.put(table, put);
  }

  // create scan instance
  TScan scan = new TScan();
  List<TColumn> columns = new ArrayList<TColumn>();
  TColumn column = new TColumn();
  column.setFamily(familyAname);
  column.setQualifier(qualifierAname);
  columns.add(column);
  scan.setColumns(columns);
  scan.setStartRow("testGetScannerResults".getBytes());

  // get 5 rows and check the returned results
  scan.setStopRow("testGetScannerResults05".getBytes());
  List<TResult> results = handler.getScannerResults(table, scan, 5);
  assertEquals(5, results.size());
  for (int i = 0; i < 5; i++) {
    // check if the rows are returned and in order
    assertArrayEquals(("testGetScannerResults" + pad(i, (byte) 2)).getBytes(), results.get(i)
        .getRow());
  }

  // get 10 rows and check the returned results
  scan.setStopRow("testGetScannerResults10".getBytes());
  results = handler.getScannerResults(table, scan, 10);
  assertEquals(10, results.size());
  for (int i = 0; i < 10; i++) {
    // check if the rows are returned and in order
    assertArrayEquals(("testGetScannerResults" + pad(i, (byte) 2)).getBytes(), results.get(i)
        .getRow());
  }

  // get 20 rows and check the returned results
  scan.setStopRow("testGetScannerResults20".getBytes());
  results = handler.getScannerResults(table, scan, 20);
  assertEquals(20, results.size());
  for (int i = 0; i < 20; i++) {
    // check if the rows are returned and in order
    assertArrayEquals(("testGetScannerResults" + pad(i, (byte) 2)).getBytes(), results.get(i)
        .getRow());
  }
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
@Test
 public void testGetScannerResults() throws Exception {
   ThriftHBaseServiceHandler handler = createHandler();
   ByteBuffer table = wrap(tableAname);

   // insert data
   TColumnValue columnValue =
       new TColumnValue(wrap(familyAname), wrap(qualifierAname), wrap(valueAname));
   List<TColumnValue> columnValues = new ArrayList<TColumnValue>();
   columnValues.add(columnValue);
   for (int i = 0; i < 20; i++) {
     TPut put =
         new TPut(wrap(("testGetScannerResults" + pad(i, (byte) 2)).getBytes()), columnValues);
     handler.put(table, put);
   }

   // create scan instance
   TScan scan = new TScan();
   List<TColumn> columns = new ArrayList<TColumn>();
   TColumn column = new TColumn();
   column.setFamily(familyAname);
   column.setQualifier(qualifierAname);
   columns.add(column);
   scan.setColumns(columns);
   scan.setStartRow("testGetScannerResults".getBytes());

   // get 5 rows and check the returned results
   scan.setStopRow("testGetScannerResults05".getBytes());
   List<TResult> results = handler.getScannerResults(table, scan, 5);
   assertEquals(5, results.size());
   for (int i = 0; i < 5; i++) {
     // check if the rows are returned and in order
     assertArrayEquals(("testGetScannerResults" + pad(i, (byte) 2)).getBytes(), results.get(i)
         .getRow());
   }

   // get 10 rows and check the returned results
   scan.setStopRow("testGetScannerResults10".getBytes());
   results = handler.getScannerResults(table, scan, 10);
   assertEquals(10, results.size());
   for (int i = 0; i < 10; i++) {
     // check if the rows are returned and in order
     assertArrayEquals(("testGetScannerResults" + pad(i, (byte) 2)).getBytes(), results.get(i)
         .getRow());
   }

   // get 20 rows and check the returned results
   scan.setStopRow("testGetScannerResults20".getBytes());
   results = handler.getScannerResults(table, scan, 20);
   assertEquals(20, results.size());
   for (int i = 0; i < 20; i++) {
     // check if the rows are returned and in order
     assertArrayEquals(("testGetScannerResults" + pad(i, (byte) 2)).getBytes(), results.get(i)
         .getRow());
   }
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
@Test
public void testScanWithVisibilityLabels() throws Exception {
  ThriftHBaseServiceHandler handler = createHandler();
  ByteBuffer table = wrap(tableAname);

  // insert data
  TColumnValue columnValue = new TColumnValue(wrap(familyAname),
      wrap(qualifierAname), wrap(valueAname));
  List<TColumnValue> columnValues = new ArrayList<>(1);
  columnValues.add(columnValue);
  for (int i = 0; i < 10; i++) {
    TPut put = new TPut(wrap(Bytes.toBytes("testScan" + i)), columnValues);
    if (i == 5) {
      put.setCellVisibility(new TCellVisibility().setExpression(PUBLIC));
    } else {
      put.setCellVisibility(new TCellVisibility().setExpression("(" + SECRET
          + "|" + CONFIDENTIAL + ")" + "&" + "!" + TOPSECRET));
    }
    handler.put(table, put);
  }

  // create scan instance
  TScan scan = new TScan();
  List<TColumn> columns = new ArrayList<>(1);
  TColumn column = new TColumn();
  column.setFamily(familyAname);
  column.setQualifier(qualifierAname);
  columns.add(column);
  scan.setColumns(columns);
  scan.setStartRow(Bytes.toBytes("testScan"));
  scan.setStopRow(Bytes.toBytes("testScan\uffff"));

  TAuthorization tauth = new TAuthorization();
  List<String> labels = new ArrayList<>(2);
  labels.add(SECRET);
  labels.add(PRIVATE);
  tauth.setLabels(labels);
  scan.setAuthorizations(tauth);
  // get scanner and rows
  int scanId = handler.openScanner(table, scan);
  List<TResult> results = handler.getScannerRows(scanId, 10);
  assertEquals(9, results.size());
  Assert.assertFalse(Bytes.equals(results.get(5).getRow(), Bytes.toBytes("testScan" + 5)));
  for (int i = 0; i < 9; i++) {
    if (i < 5) {
      assertArrayEquals(Bytes.toBytes("testScan" + i), results.get(i).getRow());
    } else if (i == 5) {
      continue;
    } else {
      assertArrayEquals(Bytes.toBytes("testScan" + (i + 1)), results.get(i)
          .getRow());
    }
  }

  // check that we are at the end of the scan
  results = handler.getScannerRows(scanId, 9);
  assertEquals(0, results.size());

  // close scanner and check that it was indeed closed
  handler.closeScanner(scanId);
  try {
    handler.getScannerRows(scanId, 9);
    fail("Scanner id should be invalid");
  } catch (TIllegalArgument e) {
  }
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
@Test
public void testGetScannerResultsWithAuthorizations() throws Exception {
  ThriftHBaseServiceHandler handler = createHandler();
  ByteBuffer table = wrap(tableAname);

  // insert data
  TColumnValue columnValue = new TColumnValue(wrap(familyAname),
      wrap(qualifierAname), wrap(valueAname));
  List<TColumnValue> columnValues = new ArrayList<>(1);
  columnValues.add(columnValue);
  for (int i = 0; i < 20; i++) {
    TPut put = new TPut(
        wrap(Bytes.toBytes("testGetScannerResults" + pad(i, (byte) 2))), columnValues);
    if (i == 3) {
      put.setCellVisibility(new TCellVisibility().setExpression(PUBLIC));
    } else {
      put.setCellVisibility(new TCellVisibility().setExpression("(" + SECRET
          + "|" + CONFIDENTIAL + ")" + "&" + "!" + TOPSECRET));
    }
    handler.put(table, put);
  }

  // create scan instance
  TScan scan = new TScan();
  List<TColumn> columns = new ArrayList<>(1);
  TColumn column = new TColumn();
  column.setFamily(familyAname);
  column.setQualifier(qualifierAname);
  columns.add(column);
  scan.setColumns(columns);
  scan.setStartRow(Bytes.toBytes("testGetScannerResults"));

  // get 5 rows and check the returned results
  scan.setStopRow(Bytes.toBytes("testGetScannerResults05"));
  TAuthorization tauth = new TAuthorization();
  List<String> labels = new ArrayList<>(2);
  labels.add(SECRET);
  labels.add(PRIVATE);
  tauth.setLabels(labels);
  scan.setAuthorizations(tauth);
  List<TResult> results = handler.getScannerResults(table, scan, 5);
  assertEquals(4, results.size());
  for (int i = 0; i < 4; i++) {
    if (i < 3) {
      assertArrayEquals(
          Bytes.toBytes("testGetScannerResults" + pad(i, (byte) 2)), results.get(i).getRow());
    } else if (i == 3) {
      continue;
    } else {
      assertArrayEquals(
          Bytes.toBytes("testGetScannerResults" + pad(i + 1, (byte) 2)), results.get(i).getRow());
    }
  }
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
@Test
public void testScan() throws Exception {
  ThriftHBaseServiceHandler handler = createHandler();
  ByteBuffer table = wrap(tableAname);

  // insert data
  TColumnValue columnValue = new TColumnValue(wrap(familyAname), wrap(qualifierAname),
    wrap(valueAname));
  List<TColumnValue> columnValues = new ArrayList<>(1);
  columnValues.add(columnValue);
  for (int i = 0; i < 10; i++) {
    TPut put = new TPut(wrap(Bytes.toBytes("testScan" + i)), columnValues);
    handler.put(table, put);
  }

  // create scan instance
  TScan scan = new TScan();
  List<TColumn> columns = new ArrayList<>(1);
  TColumn column = new TColumn();
  column.setFamily(familyAname);
  column.setQualifier(qualifierAname);
  columns.add(column);
  scan.setColumns(columns);
  scan.setStartRow(Bytes.toBytes("testScan"));
  scan.setStopRow(Bytes.toBytes("testScan\uffff"));

  // get scanner and rows
  int scanId = handler.openScanner(table, scan);
  List<TResult> results = handler.getScannerRows(scanId, 10);
  assertEquals(10, results.size());
  for (int i = 0; i < 10; i++) {
    // check if the rows are returned and in order
    assertArrayEquals(Bytes.toBytes("testScan" + i), results.get(i).getRow());
  }

  // check that we are at the end of the scan
  results = handler.getScannerRows(scanId, 10);
  assertEquals(0, results.size());

  // close scanner and check that it was indeed closed
  handler.closeScanner(scanId);
  try {
    handler.getScannerRows(scanId, 10);
    fail("Scanner id should be invalid");
  } catch (TIllegalArgument e) {
  }
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
/**
 * Tests keeping a HBase scanner alive for long periods of time. Each call to getScannerRow()
 * should reset the ConnectionCache timeout for the scanner's connection.
 */
@Test
public void testLongLivedScan() throws Exception {
  int numTrials = 6;
  int trialPause = 1000;
  int cleanUpInterval = 100;
  Configuration conf = new Configuration(UTIL.getConfiguration());
  // Set the ConnectionCache timeout to trigger halfway through the trials
  conf.setInt(ThriftHBaseServiceHandler.MAX_IDLETIME, (numTrials / 2) * trialPause);
  conf.setInt(ThriftHBaseServiceHandler.CLEANUP_INTERVAL, cleanUpInterval);
  ThriftHBaseServiceHandler handler = new ThriftHBaseServiceHandler(conf,
      UserProvider.instantiate(conf));

  ByteBuffer table = wrap(tableAname);
  // insert data
  TColumnValue columnValue = new TColumnValue(wrap(familyAname), wrap(qualifierAname),
      wrap(valueAname));
  List<TColumnValue> columnValues = new ArrayList<>(1);
  columnValues.add(columnValue);
  for (int i = 0; i < numTrials; i++) {
    TPut put = new TPut(wrap(Bytes.toBytes("testScan" + i)), columnValues);
    handler.put(table, put);
  }

  // create scan instance
  TScan scan = new TScan();
  List<TColumn> columns = new ArrayList<>(1);
  TColumn column = new TColumn();
  column.setFamily(familyAname);
  column.setQualifier(qualifierAname);
  columns.add(column);
  scan.setColumns(columns);
  scan.setStartRow(Bytes.toBytes("testScan"));
  scan.setStopRow(Bytes.toBytes("testScan\uffff"));
  // Prevent the scanner from caching results
  scan.setCaching(1);

  // get scanner and rows
  int scanId = handler.openScanner(table, scan);
  for (int i = 0; i < numTrials; i++) {
    // Make sure that the Scanner doesn't throw an exception after the ConnectionCache timeout
    List<TResult> results = handler.getScannerRows(scanId, 1);
    assertArrayEquals(Bytes.toBytes("testScan" + i), results.get(0).getRow());
    Thread.sleep(trialPause);
  }
}
 

import org.apache.hadoop.hbase.thrift2.generated.TColumn; //导入方法依赖的package包/类
@Test
public void testReverseScan() throws Exception {
  ThriftHBaseServiceHandler handler = createHandler();
  ByteBuffer table = wrap(tableAname);

  // insert data
  TColumnValue columnValue = new TColumnValue(wrap(familyAname), wrap(qualifierAname),
    wrap(valueAname));
  List<TColumnValue> columnValues = new ArrayList<>(1);
  columnValues.add(columnValue);
  for (int i = 0; i < 10; i++) {
    TPut put = new TPut(wrap(Bytes.toBytes("testReverseScan" + i)), columnValues);
    handler.put(table, put);
  }

  // create reverse scan instance
  TScan scan = new TScan();
  scan.setReversed(true);
  List<TColumn> columns = new ArrayList<>(1);
  TColumn column = new TColumn();
  column.setFamily(familyAname);
  column.setQualifier(qualifierAname);
  columns.add(column);
  scan.setColumns(columns);
  scan.setStartRow(Bytes.toBytes("testReverseScan\uffff"));
  scan.setStopRow(Bytes.toBytes("testReverseScan"));

  // get scanner and rows
  int scanId = handler.openScanner(table, scan);
  List<TResult> results = handler.getScannerRows(scanId, 10);
  assertEquals(10, results.size());
  for (int i = 0; i < 10; i++) {
    // check if the rows are returned and in order
    assertArrayEquals(Bytes.toBytes("testReverseScan" + (9 - i)), results.get(i).getRow());
  }

  // check that we are at the end of the scan
  results = handler.getScannerRows(scanId, 10);
  assertEquals(0, results.size());

  // close scanner and check that it was indeed closed
  handler.closeScanner(scanId);
  try {
    handler.getScannerRows(scanId, 10);
    fail("Scanner id should be invalid");
  } catch (TIllegalArgument e) {
  }
}