Re: OpenJPA and ehcache configuration

[Georgi Naplatanov]

Hello Kevin.

This configuration works fine for me, but I was not sure about all 
configuration parameters. Now all is clear.

Thanks for your replay.

Best regards
Georgi

Kevin Sutter wrote:
Hi Georgi,
Your configuration looks right.  Are you experiencing problems with this
configuration?  I'm not positive that the ehcache team has done verification
testing with OpenJPA 2.1.x, but the plug point should still work just fine.
Let us know if you experience problems.

FYI, the QueryCompilationCache and QuerySQLCache are "on" by default, so
there's no reason to include the "true" settings in your persistence.xml for
these two properties.

The "ehcache" settings are special values that signal to the ehcache plugin
to set the other cache-related properties accordingly.  That's why you do
not need to set the RemoteCommitProvider and DataCache properties
explicitly.

Good luck,
Kevin


On Mon, Oct 11, 2010 at 4:11 AM, Georgi Naplatanov <go...@oles.biz> wrote:

Hi all.

I want to configure ehcache 2.2.0, OpenJPA plugin for ehcache 0.2 and
OpenJPA 2.1-snapshot.

Below are my configuration files, but I am not sure that it's right
configuration.

persistence.xml

<property name="openjpa.QueryCompilationCache" value="true"/>
<property name="openjpa.jdbc.QuerySQLCache" value="true"/>
<property name="openjpa.QueryCache" value="ehcache"/>
<property name="openjpa.DataCacheManager" value="ehcache"/>


ehcache.xml

<?xml version="1.0" encoding="UTF-8"?>
<ehcache>
       <defaultCache
             maxElementsInMemory="1000"
             eternal="false"
             timeToIdleSeconds="300"
             timeToLiveSeconds="600"
             overflowToDisk="false"
             memoryStoreEvictionPolicy="LRU"
             />

       <!-- OpenJPA data cache -->
       <cache name="openjpa"
                    maxElementsInMemory="5000"
                    eternal="false"
                    timeToIdleSeconds="300"
                    timeToLiveSeconds="600"
                    overflowToDisk="false"
                    memoryStoreEvictionPolicy="LRU"
             />

       <!-- OpenJPA query cache -->
       <cache name="openjpa-querycache"
              maxElementsInMemory="1000"
              eternal="false"
              timeToIdleSeconds="300"
              timeToLiveSeconds="600"
              overflowToDisk="false"
              memoryStoreEvictionPolicy="LRU"
             />

</ehcache>

Is this configuration correct ?

Should I configure :
       - "openjpa.DataCache" and "openjpa.RemoteCommitProvider" in
persistence.xml
       - additional cache names in ehcache.xml

Best regards
Georgi