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K
- The type of the key being storedV
- The type of the value being storedpublic interface StoreClient<K,V>
The user-facing interface to a Voldemort store. Gives basic put/get/delete plus helper functions.
Method Summary | |
---|---|
boolean |
applyUpdate(UpdateAction<K,V> action)
Apply the given action repeatedly until no ObsoleteVersionException is thrown. |
boolean |
applyUpdate(UpdateAction<K,V> action,
int maxTries)
Apply the given action repeatedly until no ObsoleteVersionException is thrown or maxTries unsuccessful attempts have been made. |
boolean |
delete(K key)
Delete any version of the given key which equal to or less than the current versions |
boolean |
delete(K key,
Version version)
Delete the specified version and any prior versions of the given key |
Versioned<V> |
get(K key)
Get the versioned value associated with the given key or null if no value is associated with the key. |
Versioned<V> |
get(K key,
java.lang.Object transforms)
Get the versioned value associated with the given key and apply the given transforms to it before returning the value. |
Versioned<V> |
get(K key,
Versioned<V> defaultValue)
Get the versioned value associated with the given key or the defaultValue if no value is associated with the key. |
java.util.Map<K,Versioned<V>> |
getAll(java.lang.Iterable<K> keys)
Gets the versioned values associated with the given keys and returns them in a Map of keys to versioned values. |
java.util.Map<K,Versioned<V>> |
getAll(java.lang.Iterable<K> keys,
java.util.Map<K,java.lang.Object> transforms)
Like getAll , except
that the transforms are applied on the value associated with each key
before returning the results |
java.util.List<Node> |
getResponsibleNodes(K key)
Returns the list of nodes which should have this key. |
V |
getValue(K key)
Get the value associated with the given key or null if there is no value associated with this key. |
V |
getValue(K key,
V defaultValue)
Get the value associated with the given key or defaultValue if there is no value associated with the key. |
Version |
put(K key,
V value)
Associated the given value to the key, clobbering any existing values stored for the key. |
Version |
put(K key,
Versioned<V> versioned)
Put the given Versioned value into the store for the given key if the version is greater to or concurrent with existing values. |
Version |
put(K key,
V value,
java.lang.Object transforms)
Like #put(Object, Object) , except
that the given transforms are applied on the value before writing it to
the store |
boolean |
putIfNotObsolete(K key,
Versioned<V> versioned)
Put the versioned value to the key, ignoring any ObsoleteVersionException that may be thrown |
Method Detail |
---|
V getValue(K key)
key
- The keyV getValue(K key, V defaultValue)
key
- The key for which to fetch the associated valuedefaultValue
- A value to return if there is no value associated
with this key
Versioned<V> get(K key)
key
- The key for which to fetch the value.
Versioned<V> get(K key, java.lang.Object transforms)
key
- the key for which the value is fetchedtransforms
- the transforms to be applied on the value fetched from
the store
java.util.Map<K,Versioned<V>> getAll(java.lang.Iterable<K> keys)
keys
- The keys for which to fetch the values.
java.util.Map<K,Versioned<V>> getAll(java.lang.Iterable<K> keys, java.util.Map<K,java.lang.Object> transforms)
getAll
, except
that the transforms are applied on the value associated with each key
before returning the results
keys
- the keys for which the values are fetchedtransforms
- the map of transforms, describing the transform to be
applied to the value for each key
Versioned<V> get(K key, Versioned<V> defaultValue)
key
- The key for which to fetch the value.
Version put(K key, V value)
key
- The keyvalue
- The value
Version put(K key, V value, java.lang.Object transforms)
#put(Object, Object)
, except
that the given transforms are applied on the value before writing it to
the store
key
- the keyvalue
- the valuetransforms
- the transforms to be applied on the value
Version put(K key, Versioned<V> versioned) throws ObsoleteVersionException
key
- The keyversioned
- The value and its versioned
ObsoleteVersionException
boolean putIfNotObsolete(K key, Versioned<V> versioned)
key
- The keyversioned
- The versioned value
boolean applyUpdate(UpdateAction<K,V> action)
action
- The action to apply. This is meant as a callback for the
user to extend to provide their own logic.
boolean applyUpdate(UpdateAction<K,V> action, int maxTries)
action
- The action to apply
boolean delete(K key)
key
- The key
boolean delete(K key, Version version)
key
- The key to deleteversion
- The version of the key
java.util.List<Node> getResponsibleNodes(K key)
key
-
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