com.mapr.kvstore

Interface KvTable<T>

All Known Implementing Classes:

InMemoryKvTable, KvStore

public interface KvTable<T>

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	exists(T keyValue) Cognate of lookup(Object, boolean), this function checks for the presence of an entry with a specific key.
int	getKeyCnt()
T	getKeyFromKvStoreKey(com.mapr.fs.proto.Fileserver.KvStoreKey key)
com.mapr.fs.proto.Fileserver.KvMsg	getLeftNearValue(T key)
com.mapr.fs.proto.Fileserver.KvStoreKey	getMaxKey()
com.mapr.fs.proto.Fileserver.KvStoreKey	getMinKey()
com.mapr.fs.proto.Fileserver.KvMsg	getRightNearValue(T key)
KvTableScanner	getScanner(boolean keysOnly)
KvTableScanner	getScanner(T startKey, boolean keysOnly)
KvTableScanner	getScanner(T startKey, T endKey, boolean keysOnly)
byte[]	lookup(T keyValue, boolean allowStaleRead)
com.mapr.fs.proto.Fileserver.KvstoreLookupNearResponse	lookupNear(T key)
int	open(java.lang.String name) Initializes in-memory state of the table, such as setting key type (where necessary).
void	setType(int type)

Method Detail

open

int open(java.lang.String name)

Initializes in-memory state of the table, such as setting key type (where necessary).

Parameters:

name - name of the key-value table to be initialized

Returns:

close

void close()

lookup

byte[] lookup(T keyValue,
              boolean allowStaleRead)

exists

boolean exists(T keyValue)

Cognate of lookup(Object, boolean), this function checks for the presence of an entry with a specific key.

Parameters:

keyValue -

Returns:

getLeftNearValue

com.mapr.fs.proto.Fileserver.KvMsg getLeftNearValue(T key)

getRightNearValue

com.mapr.fs.proto.Fileserver.KvMsg getRightNearValue(T key)

lookupNear

com.mapr.fs.proto.Fileserver.KvstoreLookupNearResponse lookupNear(T key)
                                                           throws KvStoreException

Throws:

KvStoreException

getMinKey

com.mapr.fs.proto.Fileserver.KvStoreKey getMinKey()

getMaxKey

com.mapr.fs.proto.Fileserver.KvStoreKey getMaxKey()

getKeyCnt

int getKeyCnt()

getKeyFromKvStoreKey

T getKeyFromKvStoreKey(com.mapr.fs.proto.Fileserver.KvStoreKey key)

getScanner

KvTableScanner getScanner(T startKey,
                          T endKey,
                          boolean keysOnly)

getScanner

KvTableScanner getScanner(T startKey,
                          boolean keysOnly)

getScanner

KvTableScanner getScanner(boolean keysOnly)

setType

void setType(int type)