Package org.yamcs.yarch.rocksdb

Class RdbSequence

java.lang.Object

org.yamcs.yarch.rocksdb.RdbSequence

All Implemented Interfaces:

Sequence

public class RdbSequence
extends Object
implements Sequence

sequence stored in the Rocksdb metadata.

The sequence will "cache" some numbers such that it does not have to update the database after each increment. If the system crashes, the numbers cached will be lost.

Constructor Summary

Constructors

Constructor	Description
RdbSequence(String name, YRDB rdb, org.rocksdb.ColumnFamilyHandle cfMetadata)

Method Summary

Modifier and Type	Method	Description
long	next()

Methods inherited from class java.lang.Object

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

Constructor Detail

RdbSequence

public RdbSequence(String name,
                   YRDB rdb,
                   org.rocksdb.ColumnFamilyHandle cfMetadata)
            throws org.rocksdb.RocksDBException,
                   YarchException

Throws:

org.rocksdb.RocksDBException

YarchException

Method Detail

next

public long next()
          throws YarchException

Specified by:

next in interface Sequence

Throws:

YarchException