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public interface ObjectStore<T extends Serializable>
Method Summary | |
---|---|
void |
clear()
Removes all items of this store without disposing it, meaning that after performing a clear(), you should still be able perform other operations. |
boolean |
contains(Serializable key)
Check whether the given Object is already registered with this store. |
boolean |
isPersistent()
Is this store persistent? |
T |
remove(Serializable key)
Remove the object with key. |
T |
retrieve(Serializable key)
Retrieve the given Object. |
void |
store(Serializable key,
T value)
Store the given Object. |
Method Detail |
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boolean contains(Serializable key) throws ObjectStoreException
key
- the identifier of the object to check
true
if the key is stored or false
no value
was stored for the key.
ObjectStoreException
- if the given key is null
.
ObjectStoreNotAvaliableException
- if any implementation-specific error
occured, e.g. when the store is not availablevoid store(Serializable key, T value) throws ObjectStoreException
key
- the identifier for value
value
- the Object to store with key
ObjectStoreException
- if the given key cannot be stored or is
null
.
ObjectStoreNotAvaliableException
- if the store is not available or any
other implementation-specific error occured.
ObjectAlreadyExistsException
- if an attempt is made to store an object
for a key that already has an object associated.T retrieve(Serializable key) throws ObjectStoreException
key
- the identifier of the object to retrieve.
ObjectDoesNotExistException
.
ObjectStoreException
- if the given key is null
.
ObjectStoreNotAvaliableException
- if the store is not available or any
other implementation-specific error occured.
ObjectDoesNotExistException
- if no value for the given key was
previously stored.T remove(Serializable key) throws ObjectStoreException
key
- the identifier of the object to remove.
ObjectStoreException
- if the given key is null
or if the
store is not available or any other implementation-specific error
occured
ObjectDoesNotExistException
- if no value for the given key was
previously stored.boolean isPersistent()
void clear() throws ObjectStoreException
ObjectStoreException
- if the operation fails
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