[Hibernate-issues] [Hibernate-JIRA] Closed: (HB-36) clear() the session cache

[<leg...@at...>]

Message:

   The following issue has been closed.

   Resolver: Gavin King
       Date: Thu, 7 Aug 2003 11:02 AM

I've implemented this, finally.
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View the issue:

  http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-36


Here is an overview of the issue:
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        Key: HB-36
    Summary:  clear() the session cache
       Type: New Feature

     Status: Closed
   Priority: Major
 Resolution: FIXED

    Project: Hibernate2
   Fix Fors:
             2.1 beta 1

   Assignee: Gavin King
   Reporter: Max Rydahl Andersen

    Created: Sat, 3 May 2003 10:21 AM
    Updated: Thu, 7 Aug 2003 11:02 AM

Description:
clear() the session cache
Like evict, but clears the entire session at once. 

Useful for batch processing, where a large cache can 
result in out of memory exceptions. 

The standard use case would be a transaction where you 
are updating many objects, and want to flush/clear 
periodically: 

int counter = 0; 
while (it.hasNext()) { 
Foo foo = (Foo)it.next(); 
foo.setBar(42); 
if ((counter++ % 10000) == 0) { 
session.flush(); 
session.clear(); 
} 
} 

The current workaround is to flush and evict after each 
update, but here you lose the benefits of batched updates: 

while (it.hasNext()) { 
Foo foo = (Foo)it.next(); 
foo.setBar(42); 
session.flush(); 
session.evict(foo); 
} 

http://sourceforge.net/tracker/index.php?func=detail&aid=728730&group_id=40712&atid=428711


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