Guys,
I am not sure if I missed anything or not, but it
looks to me that caching is disabled in
svc-persist-default by default. Following is what I
did to enable it. Anything comments are welcome!
Correct me if I am wrong.
First let me explain what I think, I Look at
DefaultPersistentBase.retrieveFromCache(), it calls
isCached(), which use "if (myMetaData.getCacheSize() >
0)" to test if the cache is enabled. And in
AbstractPersistentMetaData, a member "cacheSize" is
defined (default value=0) but not changed anywhere
(because it's a private member and no setter is
provided). Therefore, the function
DefaultPersistentBase.retrieveFromCache() will always
think that caching is disabled for all persisitents.
To enable caching, I added a line in
AbstractPersistentMetaData.configurePersistent() as
cacheSize=
myConfig.getAttributeAsInteger("cache-size", 0);
then in system.xconf, we can enable caching by
defining as following
<default-persistent id="default">
<schemas id="default">
<schema id="myschema">
<persistent id="mytable" name="mytable"
cache-size="1"/>
</schema>
</schemas>
</default-persistent>
Also, I think the "cache-size" here is just an on/off
switch, it doesn't mean the size of the cache at all.
I'll be glad to hear what you guys think.
btw, there is a minor bug fix in
DefaultPersistentBase.java, function addToCache(),
there is online line read
Persistent newObj = create(
thisObj.getMetaData().getSchemaName()
+ "."
+ thisObj.getName());
The correct fix should be
Persistent newObj = create(thisObj.getName());
because getName() is returning "schema.name" already
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