Package com.palantir.atlasdb.keyvalue.cassandra

Class CqlExecutorImpl

java.lang.Object

com.palantir.atlasdb.keyvalue.cassandra.CqlExecutorImpl

All Implemented Interfaces:

CqlExecutor

public class CqlExecutorImpl
extends Object
implements CqlExecutor

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	CqlExecutorImpl.QueryExecutor

Method Summary

Modifier and Type	Method	Description
List<CellWithTimestamp>	getTimestamps(com.palantir.atlasdb.keyvalue.api.TableReference tableRef, List<byte[]> rowsAscending, int limit, ExecutorService executor, Integer executorThreads)	Returns a list of CellWithTimestamps from cells within the given rows, starting at the given startRowInclusive, potentially spanning across multiple rows.
List<CellWithTimestamp>	getTimestampsWithinRow(com.palantir.atlasdb.keyvalue.api.TableReference tableRef, byte[] row, byte[] startColumnInclusive, long startTimestampExclusive, int limit)	Returns a list of CellWithTimestamps within the given row, starting at the (column, timestamp) pair represented by (startColumnInclusive, startTimestampExclusive).

Methods inherited from class java.lang.Object

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

Method Detail

getTimestamps

public List<CellWithTimestamp> getTimestamps(com.palantir.atlasdb.keyvalue.api.TableReference tableRef,
                                             List<byte[]> rowsAscending,
                                             int limit,
                                             ExecutorService executor,
                                             Integer executorThreads)

Description copied from interface: CqlExecutor

Returns a list of CellWithTimestamps from cells within the given rows, starting at the given startRowInclusive, potentially spanning across multiple rows. Will only return limit values, so may not return cells from all of the rows provided.

Specified by:

getTimestamps in interface CqlExecutor

executor - is used for parallelizing the queries to Cassandra. Each row is fetched in a separate thread.

executorThreads - the number of threads to use when fetching rows from Cassandra.

getTimestampsWithinRow

public List<CellWithTimestamp> getTimestampsWithinRow(com.palantir.atlasdb.keyvalue.api.TableReference tableRef,
                                                      byte[] row,
                                                      byte[] startColumnInclusive,
                                                      long startTimestampExclusive,
                                                      int limit)

Returns a list of CellWithTimestamps within the given row, starting at the (column, timestamp) pair represented by (startColumnInclusive, startTimestampExclusive).

Specified by:

getTimestampsWithinRow in interface CqlExecutor