net.vleo.timel.variable

Class MapDbVariable<V>

java.lang.Object

net.vleo.timel.variable.MapDbVariable<V>

All Implemented Interfaces:

Variable<V>

public class MapDbVariable<V>
extends Object
implements Variable<V>

A variable backed by a MapDB database.

Author:

Andrea Leofreddi

Constructor Summary

Constructors

Constructor and Description
MapDbVariable() Construct a MapDbVariable backed by its own private database.
MapDbVariable(org.mapdb.DB db, String name) Constructs a MapDbVariable backed by an existing MapDB database.

Method Summary

Modifier and Type	Method and Description
org.mapdb.DB	getDb() Retrieve the MapDb DB instance backing this variable.
TimeIterator<V>	readBackward(Interval interval, ExecutorContext context)
TimeIterator<V>	readForward(Interval interval, ExecutorContext context)
void	write(Sample<V> sample)

Methods inherited from class java.lang.Object

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

Constructor Detail

MapDbVariable

public MapDbVariable()

Construct a MapDbVariable backed by its own private database.

MapDbVariable

public MapDbVariable(org.mapdb.DB db,
                     String name)

Constructs a MapDbVariable backed by an existing MapDB database.

Parameters:

db - The backend database

name - The collection name to be used in the DB

Method Detail

getDb

public org.mapdb.DB getDb()

Retrieve the MapDb DB instance backing this variable.

Returns:

MapDb's backend DB instance

readForward

public TimeIterator<V> readForward(Interval interval,
                                   ExecutorContext context)

Specified by:

readForward in interface Variable<V>

readBackward

public TimeIterator<V> readBackward(Interval interval,
                                    ExecutorContext context)

Specified by:

readBackward in interface Variable<V>

write

public void write(Sample<V> sample)

Specified by:

write in interface Variable<V>