public interface DataStore<V>
Stores and manages serializable data of a specific type, where the key is a string and the value
is a Serializable object.
null keys or values are not allowed. Implementation should be thread-safe.
Type Parameter
Methods
clear()
public abstract DataStore<V> clear()
Deletes all of the stored keys and values.
containsKey(String key)
public abstract boolean containsKey(String key)
Returns whether the store contains the given key.
containsValue(V value)
public abstract boolean containsValue(V value)
Returns whether the store contains the given value.
delete(String key)
public abstract DataStore<V> delete(String key)
Deletes the stored key and value based on the given key, or ignored if the key doesn't already
exist.
| Name | Description |
key | String
key or null to ignore
|
Returns
Exceptions
get(String key)
public abstract V get(String key)
Returns the stored value for the given key or null if not found.
| Name | Description |
key | String
key or null for null result
|
Returns
Exceptions
getDataStoreFactory()
public abstract DataStoreFactory getDataStoreFactory()
Returns the data store factory.
getId()
public abstract String getId()
Returns the data store ID.
isEmpty()
public abstract boolean isEmpty()
Returns whether there are any stored keys.
keySet()
public abstract Set<String> keySet()
Returns the unmodifiable set of all stored keys.
Order of the keys is not specified.
set(String key, V value)
public abstract DataStore<V> set(String key, V value)
Stores the given value for the given key (replacing any existing value).
| Name | Description |
key | String
key
|
value | V
value object
|
Returns
Exceptions
size()
public abstract int size()
Returns the number of stored keys.
values()
public abstract Collection<V> values()
Returns the unmodifiable collection of all stored values.
