Package org.yamcs.yarch.rocksdb

Class AscendingRangeIterator

java.lang.Object

org.yamcs.yarch.rocksdb.AscendingRangeIterator

All Implemented Interfaces:

AutoCloseable, DbIterator

public class AscendingRangeIterator
extends Object
implements DbIterator

wrapper around a rocksdb iterator that only supports next() and is restricted to a range.

Constructor Summary

Constructors

Constructor	Description
AscendingRangeIterator(org.rocksdb.RocksIterator it, byte[] rangeStart, byte[] rangeEnd)	Constructs an iterator restricted to a range.
AscendingRangeIterator(org.rocksdb.RocksIterator it, DbRange range)

Method Summary

Modifier and Type	Method	Description
void	close()
boolean	isValid()
byte[]	key()
void	next()
void	prev()
byte[]	value()

Methods inherited from class java.lang.Object

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

Constructor Detail

AscendingRangeIterator

public AscendingRangeIterator(org.rocksdb.RocksIterator it,
                              byte[] rangeStart,
                              byte[] rangeEnd)

Constructs an iterator restricted to a range.

The condition for the rangeEnd is such that if rangeEnd is a a prefix for the db key, the key is considered as part of the range.

This is also valid for rangeStart but that is normal lexicographic order.

AscendingRangeIterator

public AscendingRangeIterator(org.rocksdb.RocksIterator it,
                              DbRange range)

Method Detail

isValid

public boolean isValid()

Specified by:

isValid in interface DbIterator

next

public void next()

Specified by:

next in interface DbIterator

key

public byte[] key()

Specified by:

key in interface DbIterator

value

public byte[] value()

Specified by:

value in interface DbIterator

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface DbIterator

prev

public void prev()

Specified by:

prev in interface DbIterator