LevelDBKVStore (JSimpleDB LevelDB Key/Value Store 2.1.2 API)

java.lang.Object
- org.jsimpledb.kv.AbstractKVStore
- - org.jsimpledb.kv.leveldb.LevelDBKVStore

All Implemented Interfaces:

Closeable, AutoCloseable, CloseableKVStore, KVStore

Direct Known Subclasses:

SnapshotLevelDBKVStore
```
public class LevelDBKVStore
extends AbstractKVStore
implements CloseableKVStore
```
Straightforward KVStore view of a LevelDB database.
Instances must be close()'d when no longer needed to avoid leaking resources associated with iterators.

Constructor Summary

Constructors
Constructor and Description
`LevelDBKVStore(org.iq80.leveldb.DB db)` Convenience constructor.
`LevelDBKVStore(org.iq80.leveldb.DB db, org.iq80.leveldb.ReadOptions readOptions, org.iq80.leveldb.WriteBatch writeBatch)` Constructor.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`close()` Close this instance.
`protected void`	`finalize()` Finalize this instance.
`byte[]`	`get(byte[] key)`
`org.iq80.leveldb.DB`	`getDB()` Get the `DB` underlying this instance.
`Iterator<KVPair>`	`getRange(byte[] minKey, byte[] maxKey, boolean reverse)`
`void`	`put(byte[] key, byte[] value)`
`void`	`remove(byte[] key)`
`String`	`toString()`

Methods inherited from class org.jsimpledb.kv.AbstractKVStore
adjustCounter, decodeCounter, encodeCounter, getAtLeast, getAtMost, removeRange

Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.jsimpledb.kv.KVStore
adjustCounter, decodeCounter, encodeCounter, getAtLeast, getAtMost, removeRange

- Constructor Detail
  - LevelDBKVStore
```
public LevelDBKVStore(org.iq80.leveldb.DB db)
```
    Convenience constructor. Uses default read options and no write batching.
    
    Parameters:
    db - database
  - LevelDBKVStore
```
public LevelDBKVStore(org.iq80.leveldb.DB db,
              org.iq80.leveldb.ReadOptions readOptions,
              org.iq80.leveldb.WriteBatch writeBatch)
```
    Constructor.
    
    Parameters:
    db - database
    readOptions - read options, or null for the default
    writeBatch - batch for write operations, or null for none
    
    Throws:
    
    IllegalArgumentException - if db is null
- Method Detail
  - getDB
```
public org.iq80.leveldb.DB getDB()
```
    Get the DB underlying this instance.
    
    Returns:
    underlying database
  - get
```
public byte[] get(byte[] key)
```
    Specified by:
    
    get in interface KVStore
    
    Overrides:
    
    get in class AbstractKVStore
  - getRange
```
public Iterator<KVPair> getRange(byte[] minKey,
                        byte[] maxKey,
                        boolean reverse)
```
    Specified by:
    
    getRange in interface KVStore
  - put
```
public void put(byte[] key,
       byte[] value)
```
    Specified by:
    
    put in interface KVStore
    
    Overrides:
    
    put in class AbstractKVStore
  - remove
```
public void remove(byte[] key)
```
    Specified by:
    
    remove in interface KVStore
    
    Overrides:
    
    remove in class AbstractKVStore
  - finalize
```
protected void finalize()
                 throws Throwable
```
    Finalize this instance. Invokes close() to close any unclosed iterators.
    
    Overrides:
    
    finalize in class Object
    
    Throws:
    
    Throwable
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - close
```
public void close()
```
    Close this instance.
    This closes any unclosed iterators returned from getRange(). This does not close the underlying DB or any associated WriteBatch.
    
    Specified by:
    
    close in interface Closeable
    
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface CloseableKVStore

Class LevelDBKVStore

Constructor Summary

Method Summary

Methods inherited from class org.jsimpledb.kv.AbstractKVStore

Methods inherited from class java.lang.Object

Methods inherited from interface org.jsimpledb.kv.KVStore

Constructor Detail

LevelDBKVStore

LevelDBKVStore

Method Detail

getDB

get

getRange

put

remove

finalize

toString

close