Thanks, y'all. The cachePolicy works.
P.S. The ability to define the query in the modeler was kinda cool, but
I'm one of those old-fashioned programmers that likes to keep things in
the code. Don't bother adding declarative invalidation policies for me. :-)
Andrus Adamchik wrote:
>
> On Aug 1, 2006, at 2:52 PM, Bryan Lewis wrote:
>
>> I have some old code that I've been running for a long time. It
>> creates
>> a caching SelectQuery like this:
>>
>> SelectQuery query = new SelectQuery("MyEntityName");
>> query.setCachePolicy(QueryMetadata.SHARED_CACHE);
>> query.setName("MyQueryName");
>> if (refreshing) {
>> query.setRefreshingObjects(true);
>> }
>> else {
>> query.setRefreshingObjects(false);
>> }
>> List objects = dataContext.performQuery(query);
>
>
> The change in 1.2 was in better defining the distinction of "cache
> policy" vs. "refreshingObjects" flag. The former defines whether the
> query is run at all; the later - whether the individual objects
> within the result are refreshed IF the query is run. The other way of
> looking at it is "list caching vs. object caching".
>
> So to force a refetch you may do this:
>
> query.setName("MyQueryName");
> if (refreshing) {
> query.setCachePolicy(QueryMetadata.SHARED_CACHE_REFRESH);
> }
> else {
> query.setCachePolicy(QueryMetadata.SHARED_CACHE);
> }
>
> Andrus
>
> P.S. as an aside, I already have some code on the HEAD (Cayenne 3.0)
> that support pluggable cache managers, so the query results can be
> invalidated based on some declarative policy, instead of doing this
> in the code.
>
