voldemort.store.serialized
Class SerializingStore<K,V,T>

java.lang.Object
  voldemort.store.AbstractStore<K,V,T>
      voldemort.store.serialized.SerializingStore<K,V,T>

Type Parameters:

K - The type of the key being stored

V - The type of the value being stored

T - The type of transform

All Implemented Interfaces:

Store<K,V,T>

Direct Known Subclasses:

SerializingStorageEngine

public class SerializingStore<K,V,T>
extends AbstractStore<K,V,T>

A store that transforms requests to a Store to a Store

Constructor Summary

SerializingStore(Store<ByteArray,byte[],byte[]> store, Serializer<K> keySerializer, Serializer<V> valueSerializer, Serializer<T> transformsSerializer)

Method Summary

void	close() Close the store.
boolean	delete(K key, Version version) Delete all entries prior to the given version
java.util.List<Versioned<V>>	get(K key, T transforms) Get the value associated with the given key
java.util.Map<K,java.util.List<Versioned<V>>>	getAll(java.lang.Iterable<K> keys, java.util.Map<K,T> transforms) Get the values associated with the given keys and returns them in a Map of keys to a list of versioned values.
java.lang.Object	getCapability(StoreCapabilityType capability) Get some capability of the store.
protected Serializer<K>	getKeySerializer()
protected Serializer<V>	getValueSerializer()
java.util.List<Version>	getVersions(K key) Get the versions associated with the given key.
void	put(K key, Versioned<V> value, T transforms) Associate the value with the key and version in this store
static <K1,V1,T1> SerializingStore<K1,V1,T1>	wrap(Store<ByteArray,byte[],byte[]> s, Serializer<K1> k, Serializer<V1> v, Serializer<T1> t)

Methods inherited from class voldemort.store.AbstractStore

delete, get, getAll, getName, put

Methods inherited from class java.lang.Object

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

Constructor Detail

SerializingStore

public SerializingStore(Store<ByteArray,byte[],byte[]> store,
                        Serializer<K> keySerializer,
                        Serializer<V> valueSerializer,
                        Serializer<T> transformsSerializer)

Method Detail

wrap

public static <K1,V1,T1> SerializingStore<K1,V1,T1> wrap(Store<ByteArray,byte[],byte[]> s,
                                                         Serializer<K1> k,
                                                         Serializer<V1> v,
                                                         Serializer<T1> t)

delete

public boolean delete(K key,
                      Version version)
               throws VoldemortException

Description copied from interface: Store

Delete all entries prior to the given version

Specified by:

delete in interface Store<K,V,T>

Overrides:

delete in class AbstractStore<K,V,T>

Parameters:

key - The key to delete

version - The current value of the key

Returns:

True if anything was deleted

Throws:

VoldemortException

get

public java.util.List<Versioned<V>> get(K key,
                                        T transforms)
                                 throws VoldemortException

Description copied from interface: Store

Get the value associated with the given key

Specified by:

get in interface Store<K,V,T>

Overrides:

get in class AbstractStore<K,V,T>

Parameters:

key - The key to check for

Returns:

The value associated with the key or an empty list if no values are found.

Throws:

VoldemortException

getAll

public java.util.Map<K,java.util.List<Versioned<V>>> getAll(java.lang.Iterable<K> keys,
                                                            java.util.Map<K,T> transforms)
                                                     throws VoldemortException

Description copied from interface: Store

Get the values associated with the given keys and returns them in a Map of keys to a list of versioned values. Note that the returned map will only contain entries for the keys which have a value associated with them.

Specified by:

getAll in interface Store<K,V,T>

Overrides:

getAll in class AbstractStore<K,V,T>

Parameters:

keys - The keys to check for.

Returns:

A Map of keys to a list of versioned values.

Throws:

VoldemortException

put

public void put(K key,
                Versioned<V> value,
                T transforms)
         throws VoldemortException

Description copied from interface: Store

Associate the value with the key and version in this store

Specified by:

put in interface Store<K,V,T>

Overrides:

put in class AbstractStore<K,V,T>

Parameters:

key - The key to use

value - The value to store and its version.

Throws:

VoldemortException

getVersions

public java.util.List<Version> getVersions(K key)

Description copied from interface: Store

Get the versions associated with the given key. This is used in a put call to write a new value for this key

Specified by:

getVersions in interface Store<K,V,T>

Overrides:

getVersions in class AbstractStore<K,V,T>

Parameters:

key - The key to retrieve the versions for

Returns:

List of Versions associated with this key.

close

public void close()

Description copied from interface: Store

Close the store.

Specified by:

close in interface Store<K,V,T>

Overrides:

close in class AbstractStore<K,V,T>

getValueSerializer

protected Serializer<V> getValueSerializer()

getKeySerializer

protected Serializer<K> getKeySerializer()

getCapability

public java.lang.Object getCapability(StoreCapabilityType capability)

Description copied from interface: Store

Get some capability of the store. Examples would be the serializer used, or the routing strategy. This provides a mechanism to verify that the store hierarchy has some set of capabilities without knowing the precise layering.

Specified by:

getCapability in interface Store<K,V,T>

Overrides:

getCapability in class AbstractStore<K,V,T>

Parameters:

capability - The capability type to retrieve

Returns:

The given capaiblity