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java.lang.Objectcom.cosylab.util.ObjectPool
public class ObjectPool
A simple object pool. This pool is created with an initial capacity and a class
(must be a subclass of PoolableObject) of the objects it contains.
The pool contains at most capacity of resurrected objects, which it
clears (by invoking PoolableObject.clear) before returning them to the
user. The user can request a new instance. If found in the pool, it is cleared and
returned. Otherwise a new instance creation is attempted with the default constructor.
If it fails, null is returned.
| Constructor Summary | |
|---|---|
ObjectPool(java.lang.Class objectType,
int capacity)
Creates a new object pool with an initial capacity and the type of the pooled objects. |
|
ObjectPool(ObjectFactory objectFactory,
int capacity)
Creates a new object pool with an initial capacity and ObjectFactory for creating new instances of pooled objects. |
|
| Method Summary | |
|---|---|
static void |
main(java.lang.String[] args)
Contains a test sample implementation of a poolable object and the use of thread pool. |
PoolableObject |
newInstance()
Produces a new instance. |
void |
returnToPool(PoolableObject p)
Must be invoked from the finalize method of the
PoolableObjects to return them to the object pool. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public ObjectPool(java.lang.Class objectType,
int capacity)
objectType - a type descending from PoolableObjectcapacity - the initial capacity of the object pool
public ObjectPool(ObjectFactory objectFactory,
int capacity)
objectFactory - ObjectFactory for creating new instances of pooled objectscapacity - the initial capacity of the object pool| Method Detail |
|---|
public PoolableObject newInstance()
ObjectFactory
null
if the new type construction failedpublic void returnToPool(PoolableObject p)
finalize method of the
PoolableObjects to return them to the object pool.
This method will add the object to the pool if there is any room
left, otherwise the reference and the object will be discarded.
p - the object being returned to the poolpublic static void main(java.lang.String[] args)
args - ignored.
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