Module org.postgresql.pljava

Package org.postgresql.pljava

Interface ObjectPool<T extends PooledObject>

public interface ObjectPool<T extends PooledObject>

A pool of objects of a single class. Obtain an ObjectPool from the Session by calling getObjectPool with a Class object for the class to be pooled, which must implement PooledObject.

Author:

Thomas Hallgren

Method Summary

Modifier and Type	Method	Description
T	activateInstance()	Obtain a pooled object, calling its PooledObject.activate() method.
void	passivateInstance(T instance)	Call the PooledObject.passivate() method and return the object to the pool.
void	removeInstance(T instance)	Call the PooledObject.remove() method and evict the object from the pool.

Method Details

activateInstance

T activateInstance()
            throws SQLException

Obtain a pooled object, calling its PooledObject.activate() method. A new instance is created if needed. The pooled object is removed from the pool and activated.

Returns:

A new object or an object found in the pool.

Throws:

SQLException

passivateInstance

void passivateInstance(T instance)
                throws SQLException

Call the PooledObject.passivate() method and return the object to the pool.

Parameters:

instance - The instance to passivate.

Throws:

SQLException

removeInstance

void removeInstance(T instance)
             throws SQLException

Call the PooledObject.remove() method and evict the object from the pool.

Throws:

SQLException