org.apache.cassandra.db
Class Table

java.lang.Object
  org.apache.cassandra.db.Table

public class Table
extends java.lang.Object

It represents a Keyspace.

Field Summary

java.lang.String	name
static java.lang.String	SNAPSHOT_SUBDIR_NAME
static java.lang.String	SYSTEM_TABLE

Method Summary

static java.lang.Iterable<Table>	all()
void	apply(RowMutation mutation, boolean writeCommitLog) This method adds the row to the Commit Log associated with this table.
static Table	clear(java.lang.String table)
static Table	clear(java.lang.String table, Schema schema)
void	clearSnapshot(java.lang.String tag) Clear all the snapshots for a given table.
void	createReplicationStrategy(KSMetaData ksm)
void	dropCf(java.lang.Integer cfId)
java.util.List<java.util.concurrent.Future<?>>	flush()
void	forceCleanup(NodeId.OneShotRenewer renewer) Do a cleanup of keys that do not belong locally.
java.util.List<SSTableReader>	getAllSSTables()
ColumnFamilyStore	getColumnFamilyStore(java.lang.Integer id)
ColumnFamilyStore	getColumnFamilyStore(java.lang.String cfName)
java.util.Collection<ColumnFamilyStore>	getColumnFamilyStores()
java.lang.String	getDataFileLocation(long expectedSize)
AbstractReplicationStrategy	getReplicationStrategy()
Row	getRow(QueryFilter filter)
static java.lang.String	getSnapshotPath(java.lang.String tableDirectory, java.lang.String snapshotName)
static java.lang.String	getSnapshotPath(java.lang.String dataDirPath, java.lang.String tableName, java.lang.String snapshotName)
static java.lang.String	getTimestampedSnapshotName(java.lang.String clientSuppliedName)
static void	indexRow(DecoratedKey<?> key, ColumnFamilyStore cfs, java.util.SortedSet<java.nio.ByteBuffer> indexedColumns)
void	initCf(java.lang.Integer cfId, java.lang.String cfName) adds a cf to internal structures, ends up creating disk files).
static Table	open(java.lang.String table)
static Table	open(java.lang.String table, Schema schema)
void	snapshot(java.lang.String snapshotName) Take a snapshot of the entire set of column families with a given timestamp
boolean	snapshotExists(java.lang.String snapshotName) ? Clear snapshots for this table.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

SYSTEM_TABLE

public static final java.lang.String SYSTEM_TABLE

See Also:

Constant Field Values

SNAPSHOT_SUBDIR_NAME

public static final java.lang.String SNAPSHOT_SUBDIR_NAME

See Also:

Constant Field Values

name

public final java.lang.String name

Method Detail

open

public static Table open(java.lang.String table)

open

public static Table open(java.lang.String table,
                         Schema schema)

clear

public static Table clear(java.lang.String table)
                   throws java.io.IOException

Throws:

java.io.IOException

clear

public static Table clear(java.lang.String table,
                          Schema schema)
                   throws java.io.IOException

Throws:

java.io.IOException

getColumnFamilyStores

public java.util.Collection<ColumnFamilyStore> getColumnFamilyStores()

getColumnFamilyStore

public ColumnFamilyStore getColumnFamilyStore(java.lang.String cfName)

getColumnFamilyStore

public ColumnFamilyStore getColumnFamilyStore(java.lang.Integer id)

forceCleanup

public void forceCleanup(NodeId.OneShotRenewer renewer)
                  throws java.io.IOException,
                         java.util.concurrent.ExecutionException,
                         java.lang.InterruptedException

Do a cleanup of keys that do not belong locally.

Throws:

java.io.IOException

java.util.concurrent.ExecutionException

java.lang.InterruptedException

snapshot

public void snapshot(java.lang.String snapshotName)

Take a snapshot of the entire set of column families with a given timestamp

Parameters:

snapshotName - the tag associated with the name of the snapshot. This value may not be null

getTimestampedSnapshotName

public static java.lang.String getTimestampedSnapshotName(java.lang.String clientSuppliedName)

Parameters:

clientSuppliedName - may be null.

Returns:

snapshotExists

public boolean snapshotExists(java.lang.String snapshotName)

? Clear snapshots for this table. If no tag is given we will clear all snapshots

Parameters:

snapshotName - the user supplied snapshot name

Returns:

true if the snapshot exists

clearSnapshot

public void clearSnapshot(java.lang.String tag)
                   throws java.io.IOException

Clear all the snapshots for a given table.

Throws:

java.io.IOException

getAllSSTables

public java.util.List<SSTableReader> getAllSSTables()

Returns:

A list of open SSTableReaders

createReplicationStrategy

public void createReplicationStrategy(KSMetaData ksm)
                               throws ConfigurationException

Throws:

ConfigurationException

dropCf

public void dropCf(java.lang.Integer cfId)
            throws java.io.IOException

Throws:

java.io.IOException

initCf

public void initCf(java.lang.Integer cfId,
                   java.lang.String cfName)

adds a cf to internal structures, ends up creating disk files).

getRow

public Row getRow(QueryFilter filter)
           throws java.io.IOException

Throws:

java.io.IOException

apply

public void apply(RowMutation mutation,
                  boolean writeCommitLog)
           throws java.io.IOException

This method adds the row to the Commit Log associated with this table. Once this happens the data associated with the individual column families is also written to the column family store's memtable.

Throws:

java.io.IOException

getReplicationStrategy

public AbstractReplicationStrategy getReplicationStrategy()

indexRow

public static void indexRow(DecoratedKey<?> key,
                            ColumnFamilyStore cfs,
                            java.util.SortedSet<java.nio.ByteBuffer> indexedColumns)

flush

public java.util.List<java.util.concurrent.Future<?>> flush()
                                                     throws java.io.IOException

Throws:

java.io.IOException

getDataFileLocation

public java.lang.String getDataFileLocation(long expectedSize)

getSnapshotPath

public static java.lang.String getSnapshotPath(java.lang.String dataDirPath,
                                               java.lang.String tableName,
                                               java.lang.String snapshotName)

getSnapshotPath

public static java.lang.String getSnapshotPath(java.lang.String tableDirectory,
                                               java.lang.String snapshotName)

all

public static java.lang.Iterable<Table> all()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object