Package com.github.ddth.dao.nosql

Class BaseKvDao

java.lang.Object

com.github.ddth.dao.BaseDao

com.github.ddth.dao.nosql.BaseNoSqlDao

com.github.ddth.dao.nosql.BaseKvDao

All Implemented Interfaces:

IKvStorage, java.lang.AutoCloseable

public class BaseKvDao
extends BaseNoSqlDao
implements IKvStorage

Base class for {key:value} NoSQL-based DAOs.

Since:

0.10.0

Author:

Thanh Nguyen

Constructor Summary

Constructors

Constructor	Description
BaseKvDao()

Method Summary

Modifier and Type	Method	Description
void	delete(java.lang.String spaceId, java.lang.String key, IDeleteCallback callback)	Delete an existing entry from storage.
<T> T	get(IKvEntryMapper<T> mapper, java.lang.String spaceId, java.lang.String key)	Get/Load an entry by key.
byte[]	get(java.lang.String spaceId, java.lang.String key)	Get/Load an entry by key.
IKvStorage	getKvStorage()	Getter for kvStorage.
boolean	keyExists(java.lang.String spaceId, java.lang.String key)	Check if a key exists.
void	put(java.lang.String spaceId, java.lang.String key, byte[] value, IPutCallback<byte[]> callback)	Put/Store an entry.
BaseKvDao	setKvStorage(IKvStorage kvStorage)	Setter for kvStorage.
long	size(java.lang.String spaceId)	Return number of entries.

Methods inherited from class com.github.ddth.dao.nosql.BaseNoSqlDao

calcCacheKey, getCacheName, invalidateCacheEntry, invalidateCacheEntry, setCacheName, wrapCallback

Methods inherited from class com.github.ddth.dao.BaseDao

addProfiling, clearProfiling, close, destroy, getCache, getCacheFactory, getFromCache, getFromCache, getProfiling, init, isCacheEnabled, isCacheItemsExpireAfterWrite, putToCache, putToCache, putToCache, removeFromCache, setCacheFactory, setCacheItemsExpireAfterWrite, startProfiling

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.github.ddth.dao.nosql.IKvStorage

delete, put

Constructor Detail

BaseKvDao

public BaseKvDao()

Method Detail

getKvStorage

public IKvStorage getKvStorage()

Getter for kvStorage.

Returns:

setKvStorage

public BaseKvDao setKvStorage(IKvStorage kvStorage)

Setter for kvStorage.

Parameters:

kvStorage -

Returns:

delete

public void delete(java.lang.String spaceId,
                   java.lang.String key,
                   IDeleteCallback callback)
            throws java.io.IOException

Delete an existing entry from storage.

Specified by:

delete in interface IKvStorage

Throws:

java.io.IOException

keyExists

public boolean keyExists(java.lang.String spaceId,
                         java.lang.String key)
                  throws java.io.IOException

Check if a key exists.

Specified by:

keyExists in interface IKvStorage

Returns:

Throws:

java.io.IOException

get

public byte[] get(java.lang.String spaceId,
                  java.lang.String key)
           throws java.io.IOException

Get/Load an entry by key.

Specified by:

get in interface IKvStorage

Returns:

Throws:

java.io.IOException

get

public <T> T get(IKvEntryMapper<T> mapper,
                 java.lang.String spaceId,
                 java.lang.String key)
          throws java.io.IOException

Get/Load an entry by key.

Specified by:

get in interface IKvStorage

Returns:

Throws:

java.io.IOException

put

public void put(java.lang.String spaceId,
                java.lang.String key,
                byte[] value,
                IPutCallback<byte[]> callback)
         throws java.io.IOException

Put/Store an entry.

Specified by:

put in interface IKvStorage

Throws:

java.io.IOException

size

public long size(java.lang.String spaceId)
          throws java.io.IOException

Return number of entries.

Specified by:

size in interface IKvStorage

Returns:

number of entries currently in the storage, -1 if counting number entries is not supported

Throws:

java.io.IOException