Package jasima.core.util

Class ValueStoreImpl

java.lang.Object

jasima.core.util.ValueStoreImpl

All Implemented Interfaces:

ValueStore, Cloneable

public class ValueStoreImpl
extends Object
implements ValueStore, Cloneable

Implementation of the ValueStore interface backed by a simple HashMap. This class can be used to implement ValueStore functionality on behalf of a host object.

Constructor Summary

Constructors

Constructor	Description
ValueStoreImpl()

Method Summary

Modifier and Type	Method	Description
ValueStoreImpl	clone()
Object	valueStoreGet(Object key)	Retrieves a value from the value store.
Set<Object>	valueStoreGetAllKeys()	Returns a list of all keys contained in this value store.
int	valueStoreGetNumKeys()	Returns the number of keys in this value store.
ValueStore	valueStoreImpl()	Returns the implementation to use for adding ValueStore functionality.
<T> T	valueStorePut(Object key, T value)	Offers a simple get/put-mechanism to store and retrieve information as a kind of global data store.
Object	valueStoreRemove(Object key)	Removes an entry from this value store.

Methods inherited from class java.lang.Object

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

Methods inherited from interface jasima.core.util.ValueStore

valueStoreContains, valueStoreGet, valueStoreUpdate

Constructor Detail

ValueStoreImpl

public ValueStoreImpl()

Method Detail

valueStorePut

public <T> T valueStorePut(Object key,
                           T value)

Offers a simple get/put-mechanism to store and retrieve information as a kind of global data store. This can be used as a simple extension mechanism.

Specified by:

valueStorePut in interface ValueStore

Parameters:

key - The key name.

value - value to assign to key. Mustn't be null (otherwise a NullPointerException is thrown).

Returns:

returns value

See Also:

valueStoreGet(Object)

valueStoreGet

public Object valueStoreGet(Object key)

Retrieves a value from the value store.

Specified by:

valueStoreGet in interface ValueStore

Parameters:

key - The entry to return, e.g., identified by a name.

Returns:

The value associated with key.

See Also:

valueStorePut(Object, Object)

valueStoreGetNumKeys

public int valueStoreGetNumKeys()

Returns the number of keys in this value store.

Specified by:

valueStoreGetNumKeys in interface ValueStore

valueStoreGetAllKeys

public Set<Object> valueStoreGetAllKeys()

Returns a list of all keys contained in this value store.

Specified by:

valueStoreGetAllKeys in interface ValueStore

valueStoreRemove

public Object valueStoreRemove(Object key)

Removes an entry from this value store.

Specified by:

valueStoreRemove in interface ValueStore

Returns:

The value previously associated with "key", or null, if no such key was found.

valueStoreImpl

public ValueStore valueStoreImpl()

Description copied from interface: ValueStore

Returns the implementation to use for adding ValueStore functionality.

Specified by:

valueStoreImpl in interface ValueStore

clone

public ValueStoreImpl clone()

Overrides:

clone in class Object