com.baidu.hugegraph.backend.store.hbase

Class HbaseSessions.Session

java.lang.Object

com.baidu.hugegraph.backend.store.BackendSession

com.baidu.hugegraph.backend.store.hbase.HbaseSessions.Session

Enclosing class:

HbaseSessions

public final class HbaseSessions.Session
extends BackendSession

Session for HBase

Constructor Summary

Constructors

Constructor and Description
Session()

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	closed()
Integer	commit() Commit all updates(put/delete) to DB
void	delete(String table, byte[] family, byte[] rowkey) Delete a record by rowkey from a table
HbaseSessions.RowIterator	get(String table, byte[] family, byte[] rowkey) Get a record by rowkey from a table
HbaseSessions.RowIterator	get(String table, byte[] family, byte[] rowkey, byte[] qualifier) Get a record by rowkey and qualifier from a table
HbaseSessions.RowIterator	get(String table, byte[] family, Set<byte[]> rowkeys) Get multi records by rowkeys from a table
boolean	hasChanges() Any change in the session
long	increase(String table, byte[] family, byte[] rowkey, byte[] qualifier, long value) Increase a counter by rowkey and qualifier to a table
void	put(String table, byte[] family, byte[] rowkey, byte[] qualifier, byte[] value) Add a row record to a table(can be used when adding an index)
void	put(String table, byte[] family, byte[] rowkey, Collection<BackendEntry.BackendColumn> columns) Add a row record to a table
void	remove(String table, byte[] family, byte[] rowkey, byte[] qualifier) Delete a record by rowkey and qualifier from a table
void	remove(String table, byte[] family, byte[] rowkey, byte[] qualifier, boolean latestVersion) Delete a record by rowkey and qualifier from a table, just delete the latest version of the specified column if need
void	rollback() Rollback all updates(put/delete) not committed
HbaseSessions.RowIterator	scan(String table, byte[] prefix) Scan records by rowkey prefix from a table
HbaseSessions.RowIterator	scan(String table, byte[] startRow, boolean inclusiveStart, byte[] prefix) Scan records by rowkey start and prefix from a table
HbaseSessions.RowIterator	scan(String table, byte[] startRow, boolean inclusiveStart, byte[] stopRow, boolean inclusiveStop) Scan records by rowkey range from a table
HbaseSessions.RowIterator	scan(String table, byte[] startRow, byte[] stopRow) Scan records by rowkey range from a table
HbaseSessions.RowIterator	scan(String table, long limit) Scan all records from a table
HbaseSessions.RowIterator	scan(String table, Set<byte[]> prefixs) Scan records by multi rowkey prefixs from a table
long	storeSize(String table) Get store size of specified table

Methods inherited from class com.baidu.hugegraph.backend.store.BackendSession

attach, closeable, detach, txState, txState

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Session

public Session()

Method Detail

close

public void close()

Specified by:

close in class BackendSession

closed

public boolean closed()

Specified by:

closed in class BackendSession

hasChanges

public boolean hasChanges()

Any change in the session

Specified by:

hasChanges in class BackendSession

commit

public Integer commit()

Commit all updates(put/delete) to DB

Specified by:

commit in class BackendSession

rollback

public void rollback()

Rollback all updates(put/delete) not committed

Specified by:

rollback in class BackendSession

put

public void put(String table,
                byte[] family,
                byte[] rowkey,
                Collection<BackendEntry.BackendColumn> columns)

Add a row record to a table

put

public void put(String table,
                byte[] family,
                byte[] rowkey,
                byte[] qualifier,
                byte[] value)

Add a row record to a table(can be used when adding an index)

remove

public void remove(String table,
                   byte[] family,
                   byte[] rowkey,
                   byte[] qualifier)

Delete a record by rowkey and qualifier from a table

remove

public void remove(String table,
                   byte[] family,
                   byte[] rowkey,
                   byte[] qualifier,
                   boolean latestVersion)

Delete a record by rowkey and qualifier from a table, just delete the latest version of the specified column if need

delete

public void delete(String table,
                   byte[] family,
                   byte[] rowkey)

Delete a record by rowkey from a table

get

public HbaseSessions.RowIterator get(String table,
                                     byte[] family,
                                     byte[] rowkey,
                                     byte[] qualifier)

Get a record by rowkey and qualifier from a table

get

public HbaseSessions.RowIterator get(String table,
                                     byte[] family,
                                     byte[] rowkey)

Get a record by rowkey from a table

get

public HbaseSessions.RowIterator get(String table,
                                     byte[] family,
                                     Set<byte[]> rowkeys)

Get multi records by rowkeys from a table

scan

public HbaseSessions.RowIterator scan(String table,
                                      long limit)

Scan all records from a table

scan

public HbaseSessions.RowIterator scan(String table,
                                      byte[] prefix)

Scan records by rowkey prefix from a table

scan

public HbaseSessions.RowIterator scan(String table,
                                      Set<byte[]> prefixs)

Scan records by multi rowkey prefixs from a table

scan

public HbaseSessions.RowIterator scan(String table,
                                      byte[] startRow,
                                      boolean inclusiveStart,
                                      byte[] prefix)

Scan records by rowkey start and prefix from a table

scan

public HbaseSessions.RowIterator scan(String table,
                                      byte[] startRow,
                                      byte[] stopRow)

Scan records by rowkey range from a table

scan

public HbaseSessions.RowIterator scan(String table,
                                      byte[] startRow,
                                      boolean inclusiveStart,
                                      byte[] stopRow,
                                      boolean inclusiveStop)

Scan records by rowkey range from a table

increase

public long increase(String table,
                     byte[] family,
                     byte[] rowkey,
                     byte[] qualifier,
                     long value)

Increase a counter by rowkey and qualifier to a table

storeSize

public long storeSize(String table)
               throws IOException

Get store size of specified table

Throws:

IOException