com.pingcap.tikv

类 Snapshot

java.lang.Object

com.pingcap.tikv.Snapshot

public class Snapshot
extends Object

构造器概要

构造器

构造器和说明
Snapshot(org.tikv.common.meta.TiTimestamp timestamp, ClientSession clientSession)

方法概要

限定符和类型	方法和说明
List<org.tikv.common.BytePairWrapper>	batchGet(int backOffer, List<byte[]> keys)
byte[]	get(byte[] key)
org.tikv.shade.com.google.protobuf.ByteString	get(org.tikv.shade.com.google.protobuf.ByteString key)
ClientSession	getClientSession()
TiConfiguration	getConf()
org.tikv.common.TiSession	getSession()
org.tikv.common.meta.TiTimestamp	getTimestamp()
long	getVersion()
Iterator<Handle>	indexHandleRead(TiDAGRequest dagRequest, List<org.tikv.common.util.RangeSplitter.RegionTask> tasks) Below is lower level API for env like Spark which already did key range split Perform handle scan
Iterator<org.tikv.kvproto.Kvrpcpb.KvPair>	scanPrefix(org.tikv.shade.com.google.protobuf.ByteString prefix) scan all keys with prefix
Iterator<TiChunk>	tableReadChunk(TiDAGRequest dagRequest, List<org.tikv.common.util.RangeSplitter.RegionTask> tasks, int numOfRows)
Iterator<Row>	tableReadRow(TiDAGRequest dagRequest, long physicalId) Issue a table read request

从类继承的方法 java.lang.Object

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

构造器详细资料

Snapshot

public Snapshot(@Nonnull
                org.tikv.common.meta.TiTimestamp timestamp,
                ClientSession clientSession)

方法详细资料

getClientSession

public ClientSession getClientSession()

getSession

public org.tikv.common.TiSession getSession()

getVersion

public long getVersion()

getTimestamp

public org.tikv.common.meta.TiTimestamp getTimestamp()

get

public byte[] get(byte[] key)

get

public org.tikv.shade.com.google.protobuf.ByteString get(org.tikv.shade.com.google.protobuf.ByteString key)

batchGet

public List<org.tikv.common.BytePairWrapper> batchGet(int backOffer,
                                                      List<byte[]> keys)

tableReadChunk

public Iterator<TiChunk> tableReadChunk(TiDAGRequest dagRequest,
                                        List<org.tikv.common.util.RangeSplitter.RegionTask> tasks,
                                        int numOfRows)

tableReadRow

public Iterator<Row> tableReadRow(TiDAGRequest dagRequest,
                                  long physicalId)

Issue a table read request

参数:

dagRequest - DAG request for coprocessor

返回:

a Iterator that contains all result from this select request.

indexHandleRead

public Iterator<Handle> indexHandleRead(TiDAGRequest dagRequest,
                                        List<org.tikv.common.util.RangeSplitter.RegionTask> tasks)

Below is lower level API for env like Spark which already did key range split Perform handle scan

参数:

dagRequest - DAGRequest for coprocessor

tasks - RegionTask of the coprocessor request to send

返回:

Row iterator to iterate over resulting rows

scanPrefix

public Iterator<org.tikv.kvproto.Kvrpcpb.KvPair> scanPrefix(org.tikv.shade.com.google.protobuf.ByteString prefix)

scan all keys with prefix

参数:

prefix - prefix of keys

返回:

iterator of kvPair

getConf

public TiConfiguration getConf()