MapDbVariable (TimEL MapDB backend 0.9.2 API)

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	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	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, ExecutorContext context)`

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,
                  ExecutorContext context)

Specified by:: write in interface Variable<V>