private static Long latestVersion(Hashtable<String, String> config, dbutil db_util)
throws Exception {
if (!config.get("timestamp_stop").equals(Integer.toString(Integer.MAX_VALUE))) {
return new Long(config.get("timestamp_stop"));
}
String rowName = config.get("file_id") + config.get("run_id") + "_";
if (config.get("task_id") != "") {
try {
rowName = rowName + String.format("%04d", new Integer(config.get("task_id")));
} catch (NumberFormatException E) {
rowName = rowName + config.get("task_id");
}
}
Get timestampGet = new Get(rowName.getBytes());
timestampGet.addColumn("d".getBytes(), "update".getBytes());
Result timestampResult = db_util.doGet(config.get("db_name_updates"), timestampGet);
KeyValue tsKv = timestampResult.getColumnLatest("d".getBytes(), "update".getBytes());
if (tsKv == null) {
rowName = config.get("file_id") + "_";
timestampGet = new Get(rowName.getBytes());
timestampGet.addColumn("d".getBytes(), "update".getBytes());
timestampResult = db_util.doGet(config.get("db_name_updates"), timestampGet);
tsKv = timestampResult.getColumnLatest("d".getBytes(), "update".getBytes());
}
if (tsKv == null) {
return new Long(Integer.MAX_VALUE);
}
Long latestVersion = new Long(tsKv.getTimestamp());
return latestVersion;
}
@Test
public void testSaveJsonFormat() throws AvroBaseException, IOException {
AvroBase<User, byte[]> userHAB =
AvroBaseFactory.createAvroBase(new HABModule(), HAB.class, AvroFormat.JSON);
User saved = new User();
saved.firstName = $("Sam");
saved.lastName = $("Pullara");
saved.birthday = $("1212");
saved.gender = GenderType.MALE;
saved.email = $("*****@*****.**");
saved.description = $("CTO of RightTime, Inc. and one of the founders of BagCheck");
saved.title = $("Engineer");
saved.image = $("http://farm1.static.flickr.com/1/buddyicons/[email protected]");
saved.location = $("Los Altos, CA");
saved.mobile = $("4155551212");
saved.password = ByteBuffer.wrap($("").getBytes());
byte[] row = Bytes.toBytes("spullara");
userHAB.put(row, saved);
Row<User, byte[]> loaded = userHAB.get(row);
assertEquals(saved, loaded.value);
HTablePool pool = new HTablePool();
HTableInterface table = pool.getTable(TABLE);
try {
Get get = new Get(row);
byte[] DATA = Bytes.toBytes("d");
get.addColumn(COLUMN_FAMILY, DATA);
Result result = table.get(get);
assertTrue(Bytes.toString(result.getValue(COLUMN_FAMILY, DATA)).startsWith("{"));
} finally {
pool.putTable(table);
}
}
@SuppressWarnings("deprecation")
@Override
public DResult get(Get get, long startId) throws IOException {
if (get.hasFamilies()) get.addFamily(DominoConst.INNER_FAMILY);
get.setTimeRange(0, startId + 1); // [x, y)
get.setMaxVersions();
Result preRead = region.get(get);
List<KeyValue> status = preRead.getColumn(DominoConst.INNER_FAMILY, DominoConst.STATUS_COL);
if (status == null || status.size() == 0) {
Result ret = MVCC.handleResult(this, getTrxMetaTable(), preRead, startId, null);
return new DResult(ret, null);
}
Integer lockId = region.getLock(null, get.getRow(), true);
try {
Result r =
MVCC.handleResult(this, getTrxMetaTable(), region.get(get, lockId), startId, lockId);
return new DResult(r, null);
} catch (TransactionOutOfDateException oode) {
return new DResult(null, oode.getMessage());
} catch (InvalidRowStatusException e) {
return new DResult(null, e.getMessage());
} finally {
region.releaseRowLock(lockId);
}
}
public static String get(String keyspace, String rowKey, String column, long timestamp)
throws Exception {
String columnValue = null;
HTable htable = new HTable(keyspace);
Get get = new Get(rowKey.getBytes());
get = get.setTimeStamp(timestamp);
get = get.setMaxVersions();
Result res = htable.get(get);
KeyValue[] data = res.raw();
for (int i = 0; i < data.length; i++) {
KeyValue d = data[i];
String family = new String(data[i].getFamily());
String qualifier = new String(data[i].getQualifier());
if (qualifier.toLowerCase().equals(column.toLowerCase())) {
columnValue = new String(d.getValue());
System.out.println(
data[i].toString()
+ " Family:"
+ family
+ " Qualifier:"
+ qualifier
+ " Value:"
+ columnValue);
break;
}
}
return columnValue;
}
public boolean fetchReadAllFieldLine(List<Line> lines, LineSender sender) throws IOException {
if (null == this.rs) {
throw new IllegalStateException("HBase Client try to fetch data failed .");
}
for (Result result = rs.next(); result != null; result = rs.next()) {
Get get = new Get(result.getRow());
for (int i = 0; i < this.families.length; i++) {
get.addColumn(this.families[i].getBytes(), this.columns[i].getBytes());
}
gets.add(get);
if (gets.size() > this.BUFFER_LINE) {
Result[] getResults = this.htable.get(gets);
for (Result resu : getResults) {
if (null != resu) {
Line line = sender.createLine();
for (int i = 0; i < this.families.length; i++) {
byte[] value = resu.getValue(this.families[i].getBytes(), this.columns[i].getBytes());
if (null == value) {
line.addField(null);
} else {
line.addField(new String(value, encode));
}
}
line.addField(new String(resu.getRow(), encode));
}
}
return true;
}
}
return false;
}
// Retrieves the row from the table and check if it exists and has not been flagged as deleted
protected Result getRow(
RecordId recordId, Long version, int numberOfVersions, List<FieldType> fields)
throws RecordException {
Result result;
Get get = new Get(recordId.toBytes());
get.setFilter(REAL_RECORDS_FILTER);
try {
// Add the columns for the fields to get
addFieldsToGet(get, fields);
if (version != null)
get.setTimeRange(0, version + 1); // Only retrieve data within this timerange
get.setMaxVersions(numberOfVersions);
// Retrieve the data from the repository
result = recordTable.get(get);
if (result == null || result.isEmpty()) throw new RecordNotFoundException(recordId);
} catch (IOException e) {
throw new RecordException(
"Exception occurred while retrieving record '" + recordId + "' from HBase table", e);
}
return result;
}
// Retrieves the row from the table and check if it exists and has not been flagged as deleted
protected Map<RecordId, Result> getRows(List<RecordId> recordIds, List<FieldType> fields)
throws RecordException {
Map<RecordId, Result> results = new HashMap<RecordId, Result>();
try {
List<Get> gets = new ArrayList<Get>();
for (RecordId recordId : recordIds) {
Get get = new Get(recordId.toBytes());
// Add the columns for the fields to get
addFieldsToGet(get, fields);
get.setMaxVersions(1); // Only retrieve the most recent version of each field
gets.add(get);
}
// Retrieve the data from the repository
int i = 0;
for (Result result : recordTable.get(gets)) {
if (result == null || result.isEmpty()) {
i++; // Skip this recordId (instead of throwing a RecordNotFoundException)
continue;
}
// Check if the record was deleted
byte[] deleted = recdec.getLatest(result, RecordCf.DATA.bytes, RecordColumn.DELETED.bytes);
if ((deleted == null) || (Bytes.toBoolean(deleted))) {
i++; // Skip this recordId (instead of throwing a RecordNotFoundException)
continue;
}
results.put(recordIds.get(i++), result);
}
} catch (IOException e) {
throw new RecordException(
"Exception occurred while retrieving records '" + recordIds + "' from HBase table", e);
}
return results;
}
private static VesselTrackInfo getTrackInfo(Table TrackInfo_Table, String IMO_str)
throws IOException {
Get get = new Get(Bytes.toBytes(IMO_str));
get.addColumn(details, lastlocation);
get.addColumn(details, firstrecordtime);
get.addColumn(details, lastrecordtime);
Result result = TrackInfo_Table.get(get);
byte[] last_location = result.getValue(details, lastlocation);
byte[] fist_recordtime = result.getValue(details, firstrecordtime);
byte[] last_recordtime = result.getValue(details, lastrecordtime);
VesselTrackInfo trackinfo = new VesselTrackInfo();
trackinfo.LastLocation = last_location;
if (fist_recordtime != null) {
trackinfo.FirstRecordTime =
DateTime.parse(Bytes.toString(fist_recordtime), rawformatter).getMillis();
}
if (last_recordtime != null) {
trackinfo.LastRecordTime =
DateTime.parse(Bytes.toString(last_recordtime), rawformatter).getMillis();
}
return trackinfo;
}
/**
* Gets the region info and assignment for the specified region.
*
* @param catalogTracker
* @param regionName Region to lookup.
* @return Location and HRegionInfo for <code>regionName</code>
* @throws IOException
*/
public static Pair<HRegionInfo, ServerName> getRegion(
CatalogTracker catalogTracker, byte[] regionName) throws IOException {
Get get = new Get(regionName);
get.addFamily(HConstants.CATALOG_FAMILY);
Result r = get(getCatalogHTable(catalogTracker, regionName), get);
return (r == null || r.isEmpty()) ? null : parseCatalogResult(r);
}
public static int getDynamicTable(Configuration config) {
/** Connection to the cluster. A single connection shared by all application threads. */
Connection connection = null;
/** A lightweight handle to a specific table. Used from a single thread. */
Table table = null;
try {
connection = ConnectionFactory.createConnection(config);
table = connection.getTable(TABLE_NAME1);
Get get = new Get(Bytes.toBytes("cloudera"));
get.addFamily(CF);
get.setMaxVersions(Integer.MAX_VALUE);
Result result = table.get(get);
NavigableMap<byte[], NavigableMap<byte[], NavigableMap<Long, byte[]>>> map = result.getMap();
for (Entry<byte[], NavigableMap<byte[], NavigableMap<Long, byte[]>>> columnFamilyEntry :
map.entrySet()) {
NavigableMap<byte[], NavigableMap<Long, byte[]>> columnMap = columnFamilyEntry.getValue();
for (Entry<byte[], NavigableMap<Long, byte[]>> columnEntry : columnMap.entrySet()) {
NavigableMap<Long, byte[]> cellMap = columnEntry.getValue();
for (Entry<Long, byte[]> cellEntry : cellMap.entrySet()) {
System.out.println(
String.format(
"Key : %s, Value :%s",
Bytes.toString(columnEntry.getKey()), Bytes.toString(cellEntry.getValue())));
}
}
}
} catch (IOException e) {
e.printStackTrace();
}
return 0;
}
@Override
public void setLogPosition(String queueId, String filename, long position) {
try {
byte[] rowKey = queueIdToRowKey(queueId);
// Check that the log exists. addLog() must have been called before setLogPosition().
Get checkLogExists = new Get(rowKey);
checkLogExists.addColumn(CF_QUEUE, Bytes.toBytes(filename));
if (!replicationTable.exists(checkLogExists)) {
String errMsg =
"Could not set position of non-existent log from queueId="
+ queueId
+ ", filename="
+ filename;
abortable.abort(errMsg, new ReplicationException(errMsg));
return;
}
// Update the log offset if it exists
Put walAndOffset = new Put(rowKey);
walAndOffset.addColumn(CF_QUEUE, Bytes.toBytes(filename), Bytes.toBytes(position));
safeQueueUpdate(walAndOffset);
} catch (IOException | ReplicationException e) {
String errMsg =
"Failed writing log position queueId="
+ queueId
+ "filename="
+ filename
+ " position="
+ position;
abortable.abort(errMsg, e);
}
}
public static void readTest(String tableStr, String row) {
try {
Configuration conf = HBaseConfiguration.create();
byte[] tableName = Bytes.toBytes(tableStr);
HConnection hConnection = HConnectionManager.createConnection(conf);
HTableInterface table = hConnection.getTable(tableName);
byte[] rowkey = Bytes.toBytes(row);
Get get = new Get(rowkey);
get.addFamily(f0);
Result result = table.get(get);
NavigableMap<byte[], byte[]> m = result.getFamilyMap(f0);
if (m == null || m.isEmpty()) {
System.err.println("Empty." + m);
return;
}
for (Map.Entry<byte[], byte[]> entry : m.entrySet()) {
String qualifier = Bytes.toString(entry.getKey());
String value = Bytes.toString(entry.getValue());
System.out.println(qualifier + ":" + value);
}
table.close(); // very important
} catch (IOException e) {
e.printStackTrace();
}
}
public void verifyInvocationResults(Integer[] selectQualifiers, Integer[] expectedQualifiers)
throws Exception {
Get get = new Get(ROW_BYTES);
for (int i = 0; i < selectQualifiers.length; i++) {
get.addColumn(FAMILY_NAME_BYTES, Bytes.toBytes(QUALIFIER_PREFIX + selectQualifiers[i]));
}
get.setFilter(new InvocationRecordFilter());
List<KeyValue> expectedValues = new ArrayList<KeyValue>();
for (int i = 0; i < expectedQualifiers.length; i++) {
expectedValues.add(
new KeyValue(
ROW_BYTES,
FAMILY_NAME_BYTES,
Bytes.toBytes(QUALIFIER_PREFIX + expectedQualifiers[i]),
expectedQualifiers[i],
Bytes.toBytes(VALUE_PREFIX + expectedQualifiers[i])));
}
Scan scan = new Scan(get);
List<Cell> actualValues = new ArrayList<Cell>();
List<Cell> temp = new ArrayList<Cell>();
InternalScanner scanner = this.region.getScanner(scan);
while (scanner.next(temp)) {
actualValues.addAll(temp);
temp.clear();
}
actualValues.addAll(temp);
Assert.assertTrue(
"Actual values " + actualValues + " differ from the expected values:" + expectedValues,
expectedValues.equals(actualValues));
}
@Before
public void setUp() throws Exception {
super.setUp();
row1 = Bytes.toBytes("row1");
row2 = Bytes.toBytes("row2");
row3 = Bytes.toBytes("row3");
fam1 = Bytes.toBytes("fam1");
fam2 = Bytes.toBytes("fam2");
col1 = Bytes.toBytes("col1");
col2 = Bytes.toBytes("col2");
col3 = Bytes.toBytes("col3");
col4 = Bytes.toBytes("col4");
col5 = Bytes.toBytes("col5");
data = Bytes.toBytes("data");
// Create Get
get = new Get(row1);
get.addFamily(fam1);
get.addColumn(fam2, col2);
get.addColumn(fam2, col4);
get.addColumn(fam2, col5);
this.scan = new Scan(get);
rowComparator = CellComparator.COMPARATOR;
}
public List<Query> getQueries(final String creator) throws IOException {
if (null == creator) {
return null;
}
List<Query> queries = new ArrayList<Query>();
HTableInterface htable = null;
try {
htable = HBaseConnection.get(hbaseUrl).getTable(userTableName);
Get get = new Get(Bytes.toBytes(creator));
get.addFamily(Bytes.toBytes(USER_QUERY_FAMILY));
Result result = htable.get(get);
Query[] query =
querySerializer.deserialize(
result.getValue(Bytes.toBytes(USER_QUERY_FAMILY), Bytes.toBytes(USER_QUERY_COLUMN)));
if (null != query) {
queries.addAll(Arrays.asList(query));
}
} finally {
IOUtils.closeQuietly(htable);
}
return queries;
}
/**
* Read a record from the database. Each field/value pair from the result will be stored in a
* HashMap.
*
* @param table The name of the table
* @param key The record key of the record to read.
* @param fields The list of fields to read, or null for all of them
* @param result A HashMap of field/value pairs for the result
* @return Zero on success, a non-zero error code on error
*/
public Status read(
String table, String key, Set<String> fields, HashMap<String, ByteIterator> result) {
// if this is a "new" table, init HTable object. Else, use existing one
if (!tableName.equals(table)) {
currentTable = null;
try {
getHTable(table);
tableName = table;
} catch (IOException e) {
System.err.println("Error accessing HBase table: " + e);
return Status.ERROR;
}
}
Result r = null;
try {
if (debug) {
System.out.println("Doing read from HBase columnfamily " + columnFamily);
System.out.println("Doing read for key: " + key);
}
Get g = new Get(Bytes.toBytes(key));
if (fields == null) {
g.addFamily(columnFamilyBytes);
} else {
for (String field : fields) {
g.addColumn(columnFamilyBytes, Bytes.toBytes(field));
}
}
r = currentTable.get(g);
} catch (IOException e) {
if (debug) {
System.err.println("Error doing get: " + e);
}
return Status.ERROR;
} catch (ConcurrentModificationException e) {
// do nothing for now...need to understand HBase concurrency model better
return Status.ERROR;
}
if (r.isEmpty()) {
return Status.NOT_FOUND;
}
while (r.advance()) {
final Cell c = r.current();
result.put(
Bytes.toString(CellUtil.cloneQualifier(c)),
new ByteArrayByteIterator(CellUtil.cloneValue(c)));
if (debug) {
System.out.println(
"Result for field: "
+ Bytes.toString(CellUtil.cloneQualifier(c))
+ " is: "
+ Bytes.toString(CellUtil.cloneValue(c)));
}
}
return Status.OK;
}
public Result get(
final TransactionState transactionState, final Get get, final boolean bool_addLocation)
throws IOException {
if (LOG.isTraceEnabled()) LOG.trace("Enter TransactionalTable.get");
if (bool_addLocation) addLocation(transactionState, super.getRegionLocation(get.getRow()));
final String regionName =
super.getRegionLocation(get.getRow()).getRegionInfo().getRegionNameAsString();
Batch.Call<TrxRegionService, GetTransactionalResponse> callable =
new Batch.Call<TrxRegionService, GetTransactionalResponse>() {
ServerRpcController controller = new ServerRpcController();
BlockingRpcCallback<GetTransactionalResponse> rpcCallback =
new BlockingRpcCallback<GetTransactionalResponse>();
@Override
public GetTransactionalResponse call(TrxRegionService instance) throws IOException {
org.apache.hadoop.hbase.coprocessor.transactional.generated.TrxRegionProtos
.GetTransactionalRequest.Builder
builder = GetTransactionalRequest.newBuilder();
builder.setGet(ProtobufUtil.toGet(get));
builder.setTransactionId(transactionState.getTransactionId());
builder.setRegionName(ByteString.copyFromUtf8(regionName));
instance.get(controller, builder.build(), rpcCallback);
return rpcCallback.get();
}
};
GetTransactionalResponse result = null;
try {
int retryCount = 0;
boolean retry = false;
do {
Iterator<Map.Entry<byte[], TrxRegionProtos.GetTransactionalResponse>> it =
super.coprocessorService(TrxRegionService.class, get.getRow(), get.getRow(), callable)
.entrySet()
.iterator();
if (it.hasNext()) {
result = it.next().getValue();
retry = false;
}
if (result == null || result.getException().contains("closing region")) {
Thread.sleep(TransactionalTable.delay);
retry = true;
transactionState.setRetried(true);
retryCount++;
}
} while (retryCount < TransactionalTable.retries && retry == true);
} catch (Throwable e) {
if (LOG.isErrorEnabled()) LOG.error("ERROR while calling getTransactional ", e);
throw new IOException("ERROR while calling getTransactional ", e);
}
if (result == null) throw new IOException(retryErrMsg);
else if (result.hasException()) throw new IOException(result.getException());
return ProtobufUtil.toResult(result.getResult());
}
@Test
public void testTTL() throws Exception {
TableName tableName = TableName.valueOf("testTTL");
if (TEST_UTIL.getHBaseAdmin().tableExists(tableName)) {
TEST_UTIL.deleteTable(tableName);
}
HTableDescriptor desc = new HTableDescriptor(tableName);
HColumnDescriptor hcd = new HColumnDescriptor(F).setMaxVersions(10).setTimeToLive(1);
desc.addFamily(hcd);
TEST_UTIL.getHBaseAdmin().createTable(desc);
Table t = new HTable(new Configuration(TEST_UTIL.getConfiguration()), tableName);
long now = EnvironmentEdgeManager.currentTime();
ManualEnvironmentEdge me = new ManualEnvironmentEdge();
me.setValue(now);
EnvironmentEdgeManagerTestHelper.injectEdge(me);
// 2s in the past
long ts = now - 2000;
// Set the TTL override to 3s
Put p = new Put(R);
p.setAttribute("ttl", new byte[] {});
p.add(F, tableName.getName(), Bytes.toBytes(3000L));
t.put(p);
p = new Put(R);
p.add(F, Q, ts, Q);
t.put(p);
p = new Put(R);
p.add(F, Q, ts + 1, Q);
t.put(p);
// these two should be expired but for the override
// (their ts was 2s in the past)
Get g = new Get(R);
g.setMaxVersions(10);
Result r = t.get(g);
// still there?
assertEquals(2, r.size());
TEST_UTIL.flush(tableName);
TEST_UTIL.compact(tableName, true);
g = new Get(R);
g.setMaxVersions(10);
r = t.get(g);
// still there?
assertEquals(2, r.size());
// roll time forward 2s.
me.setValue(now + 2000);
// now verify that data eventually does expire
g = new Get(R);
g.setMaxVersions(10);
r = t.get(g);
// should be gone now
assertEquals(0, r.size());
t.close();
}
private static String getVesselType(Table Vessel_Table, String IMO_str) throws IOException {
Get get = new Get(Bytes.toBytes(IMO_str));
get.addColumn(ves, TYPE);
Result result = Vessel_Table.get(get);
byte[] type = result.getValue(ves, TYPE);
return Bytes.toString(type);
}
public static HBaseTuple getHBaseTuple(String row, String colFamily, String colName)
throws IOException {
Configuration conf = getConfiguration();
HTable table1 = new HTable(conf, "table1");
Get get = new Get(Bytes.toBytes(row));
get.addFamily(Bytes.toBytes(colFamily));
get.addColumn(Bytes.toBytes(colFamily), Bytes.toBytes(colName));
Result result = table1.get(get);
return getHBaseTuple(result);
}
// Get all events with exit at last location
public static Map<Integer, VesselEvent> getAllEventsStartBeforeEndAfterBeforeLocation(
Table VTEvent_Table, String IMO_str, VesselLocation location) throws IOException {
Scan getAllEventsWithExistAtLastLocation = new Scan();
getAllEventsWithExistAtLastLocation
.setStartRow(
Bytes.toBytes(
IMO_str + LpadNum(Long.MAX_VALUE - location.recordtime, 19) + "0000000000"))
.setStopRow(Bytes.toBytes(IMO_str + LpadNum(Long.MAX_VALUE, 19) + "9999999999"))
.addColumn(details, exittime);
getAllEventsWithExistAtLastLocation.setCaching(100);
Filter ExistTimeValuefilter =
new ValueFilter(
CompareFilter.CompareOp.GREATER_OR_EQUAL,
new BinaryComparator(
Bytes.toBytes(new DateTime(location.recordtime).toString(rawformatter))));
getAllEventsWithExistAtLastLocation.setFilter(ExistTimeValuefilter);
ResultScanner Result_event = VTEvent_Table.getScanner(getAllEventsWithExistAtLastLocation);
Map<Integer, VesselEvent> events = new HashMap<Integer, VesselEvent>();
for (Result res : Result_event) {
Get get = new Get(res.getRow());
get.addColumn(details, entrytime);
get.addColumn(details, entrycoordinates);
Result result = VTEvent_Table.get(get);
String rowkey = Bytes.toString(result.getRow());
String polygonid = rowkey.substring(26);
VesselEvent VE = new VesselEvent();
VE.exittime = location.recordtime;
VE.exitcoordinates = location.coordinates;
VE.destination = location.destination;
VE.polygonid = Integer.parseInt(polygonid);
for (Cell cell : result.rawCells()) {
String Qualifier = Bytes.toString(CellUtil.cloneQualifier(cell));
String Value = Bytes.toString(CellUtil.cloneValue(cell));
if (Qualifier.equals("entertime")) {
VE.entrytime = DateTime.parse(Value, rawformatter).getMillis();
} else if (Qualifier.equals("entercoordinates")) {
VE.entrycoordinates = Value;
}
}
events.put(VE.polygonid, VE);
}
Result_event.close();
return events;
}
public static void main(String[] args) throws IOException {
Configuration conf = HBaseConfiguration.create();
HBaseHelper helper = HBaseHelper.getHelper(conf);
helper.dropTable("testtable");
helper.createTable("testtable", "colfam1", "colfam2", "colfam3", "colfam4");
System.out.println("Adding rows to table...");
helper.fillTable("testtable", 1, 10, 2, "colfam1", "colfam2", "colfam3", "colfam4");
HTable table = new HTable(conf, "testtable");
// vv FamilyFilterExample
Filter filter1 =
new FamilyFilter(
CompareFilter.CompareOp
.LESS, // co FamilyFilterExample-1-Filter Create filter, while specifying the
// comparison operator and comparator.
new BinaryComparator(Bytes.toBytes("colfam3")));
Scan scan = new Scan();
scan.setFilter(filter1);
ResultScanner scanner =
table.getScanner(
scan); // co FamilyFilterExample-2-Scan Scan over table while applying the filter.
// ^^ FamilyFilterExample
System.out.println("Scanning table... ");
// vv FamilyFilterExample
for (Result result : scanner) {
System.out.println(result);
}
scanner.close();
Get get1 = new Get(Bytes.toBytes("row-5"));
get1.setFilter(filter1);
Result result1 =
table.get(get1); // co FamilyFilterExample-3-Get Get a row while applying the same filter.
System.out.println("Result of get(): " + result1);
Filter filter2 =
new FamilyFilter(
CompareFilter.CompareOp.EQUAL, new BinaryComparator(Bytes.toBytes("colfam3")));
Get get2 =
new Get(
Bytes.toBytes(
"row-5")); // co FamilyFilterExample-4-Mismatch Create a filter on one column family
// while trying to retrieve another.
get2.addFamily(Bytes.toBytes("colfam1"));
get2.setFilter(filter2);
Result result2 =
table.get(
get2); // co FamilyFilterExample-5-Get2 Get the same row while applying the new filter,
// this will return "NONE".
System.out.println("Result of get(): " + result2);
// ^^ FamilyFilterExample
}
private void addFieldsToGet(Get get, List<FieldType> fields) {
if (fields != null && (!fields.isEmpty())) {
for (FieldType field : fields) {
get.addColumn(RecordCf.DATA.bytes, ((FieldTypeImpl) field).getQualifier());
}
RecordDecoder.addSystemColumnsToGet(get);
} else {
// Retrieve everything
get.addFamily(RecordCf.DATA.bytes);
}
}
@Override
public List<SpanBo> selectSpans(TransactionId transactionId) {
if (transactionId == null) {
throw new NullPointerException("transactionId must not be null");
}
byte[] transactionIdRowKey = rowKeyDecoder.encodeRowKey(transactionId);
Get get = new Get(transactionIdRowKey);
get.addFamily(HBaseTables.TRACES_CF_SPAN);
get.addFamily(HBaseTables.TRACES_CF_TERMINALSPAN);
return template2.get(HBaseTables.TRACES, get, spanMapper);
}
private static void assertGet(byte[] row, byte[] familiy, byte[] qualifier, byte[] value)
throws IOException {
// run a get and see if the value matches
Get get = new Get(row);
get.addColumn(familiy, qualifier);
Result result = region.get(get, null);
assertEquals(1, result.size());
KeyValue kv = result.raw()[0];
byte[] r = kv.getValue();
assertTrue(Bytes.compareTo(r, value) == 0);
}
public static void main(String[] args) throws IOException {
Configuration conf = HBaseConfiguration.create();
HBaseHelper helper = HBaseHelper.getHelper(conf);
helper.dropTable("testtable");
helper.createTable("testtable", "colfam1", "colfam2");
System.out.println("Adding rows to table...");
helper.fillTable("testtable", 1, 10, 10, "colfam1", "colfam2");
Connection connection = ConnectionFactory.createConnection(conf);
Table table = connection.getTable(TableName.valueOf("testtable"));
// vv SingleColumnValueFilterExample
SingleColumnValueFilter filter =
new SingleColumnValueFilter(
Bytes.toBytes("colfam1"),
Bytes.toBytes("col-5"),
CompareFilter.CompareOp.NOT_EQUAL,
new SubstringComparator("val-5"));
filter.setFilterIfMissing(true);
Scan scan = new Scan();
scan.setFilter(filter);
ResultScanner scanner = table.getScanner(scan);
// ^^ SingleColumnValueFilterExample
System.out.println("Results of scan:");
// vv SingleColumnValueFilterExample
for (Result result : scanner) {
for (Cell cell : result.rawCells()) {
System.out.println(
"Cell: "
+ cell
+ ", Value: "
+ Bytes.toString(
cell.getValueArray(), cell.getValueOffset(), cell.getValueLength()));
}
}
scanner.close();
Get get = new Get(Bytes.toBytes("row-6"));
get.setFilter(filter);
Result result = table.get(get);
System.out.println("Result of get: ");
for (Cell cell : result.rawCells()) {
System.out.println(
"Cell: "
+ cell
+ ", Value: "
+ Bytes.toString(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength()));
}
// ^^ SingleColumnValueFilterExample
}
@Override
public List<SqlMetaDataBo> getSqlMetaData(String agentId, long time, int hashCode) {
if (agentId == null) {
throw new NullPointerException("agentId must not be null");
}
SqlMetaDataBo sqlMetaData = new SqlMetaDataBo(agentId, time, hashCode);
byte[] sqlId = getDistributedKey(sqlMetaData.toRowKey());
Get get = new Get(sqlId);
get.addFamily(HBaseTables.SQL_METADATA_CF_SQL);
return hbaseOperations2.get(HBaseTables.SQL_METADATA, get, sqlMetaDataMapper);
}
/**
* HBaseのsc_item_dataから、商品データを取得。
*
* @param shopID 店舗ID
* @param itemID 商品ID。
* @param families column families
* @return 該当商品データ
*/
public ItemData get(int shopID, int itemID, String[] families) throws IOException {
byte[] rowkey = encodeRowkey(shopID, itemID);
if (rowkey == null || rowkey.length == 0) {
return null;
}
Get g = new Get(rowkey);
for (String family : families) {
byte[] bFamily = Bytes.toBytes(family);
g.addFamily(bFamily);
}
g.setMaxVersions();
Result r = table.get(g);
return toDataStore(r);
}
@TimeDepend
@Test
public void testGetWith_Ts() throws Exception {
recreateTable();
fillData();
Get get = new Get(rowKey_ForTest);
get.addColumn(ColumnFamilyNameBytes, QName1);
get.setMaxVersions(3);
get.setTimeStamp(3L);
Result result = table.get(get);
Assert.assertEquals(1, result.raw().length);
get.setTimeStamp(2L);
result = table.get(get);
Assert.assertEquals(1, result.raw().length);
get.setTimeStamp(1L);
result = table.get(get);
Assert.assertEquals(1, result.raw().length);
get.setTimeStamp(0L);
result = table.get(get);
Assert.assertEquals(0, result.raw().length);
get.setTimeRange(1, 4);
result = table.get(get);
Assert.assertEquals(3, result.raw().length);
recreateTable();
}
/*
* 查询表中的某一列
*
* @tableName 表名
*
* @rowKey rowKey
*/
public static void getResultByColumn(
String tableName, String rowKey, String familyName, String columnName) throws IOException {
HTable table = new HTable(conf, Bytes.toBytes(tableName));
Get get = new Get(Bytes.toBytes(rowKey));
get.addColumn(Bytes.toBytes(familyName), Bytes.toBytes(columnName)); // 获取指定列族和列修饰符对应的列
Result result = table.get(get);
for (KeyValue kv : result.list()) {
System.out.println("family:" + Bytes.toString(kv.getFamily()));
System.out.println("qualifier:" + Bytes.toString(kv.getQualifier()));
System.out.println("value:" + Bytes.toString(kv.getValue()));
System.out.println("Timestamp:" + kv.getTimestamp());
System.out.println("-------------------------------------------");
}
}
