Ok, this is fixed in CVS. As an additional benefit, now shared cache
will cache prefetched objects for real, unlike Cayenne 1.1 that only
cached root query objects.
Andrus
On Apr 11, 2006, at 10:45 AM, Andrus Adamchik wrote:
Bryan, I logged it in Jira. Will investigate:
http://objectstyle.org/jira/browse/CAY-499
Andrus
On Apr 11, 2006, at 4:07 AM, Bryan Lewis wrote:
I put the 1.2B1 jar on our servers over the weekend and got one
little
surprise today... an exception when a prefetch is specified on a
caching
query. Here's some code that reproduces it, then the stack trace.
public static List fetchBankruptciesForPastYear(DataContext dc)
{
// Omitting the expression details...
SelectQuery query = new SelectQuery("BKFiler", exp);
query.setCachePolicy(QueryMetadata.SHARED_CACHE);
String queryName = "BCI";
query.setName(queryName);
query.setRefreshingObjects(false);
// Omitting the orderings details...
query.addOrderings(orderings);
// This line works okay for the first fetch, but causes an
exception
// on subsequent (non-refreshing) fetches. Removing this
line
avoids
// the exception.
query.addPrefetch("company");
return dc.performQuery(query);
}
java.lang.NullPointerException
org.objectstyle.cayenne.access.ObjectTreeResolver
$TreeBuilder.addNode(ObjectTreeResolver.java:218)
org.objectstyle.cayenne.access.ObjectTreeResolver
$TreeBuilder.startDisjointPrefetch(ObjectTreeResolver.java:178)
org.objectstyle.cayenne.access.ObjectTreeResolver
$TreeBuilder.startUnknownPrefetch(ObjectTreeResolver.java:201)
org.objectstyle.cayenne.query.PrefetchTreeNode.traverse
(PrefetchTreeNode.java:209)
org.objectstyle.cayenne.query.PrefetchTreeNode.traverse
(PrefetchTreeNode.java:216)
org.objectstyle.cayenne.access.ObjectTreeResolver
$TreeBuilder.buildTree(ObjectTreeResolver.java:136)
org.objectstyle.cayenne.access.ObjectTreeResolver.resolveObjectTree
(ObjectTreeResolver.java:100)
org.objectstyle.cayenne.access.DataDomainQueryAction.interceptObjectC
onversion(DataDomainQueryAction.java:372)
org.objectstyle.cayenne.access.DataDomainQueryAction.execute
(DataDomainQueryAction.java:151)
org.objectstyle.cayenne.access.DataDomain.onQuery(DataDomain.java:
715)
org.objectstyle.cayenne.util.ObjectContextQueryAction.runQuery
(ObjectContextQueryAction.java:249)
org.objectstyle.cayenne.access.DataContextQueryAction.execute
(DataContextQueryAction.java:90)
org.objectstyle.cayenne.access.DataContext.onQuery
(DataContext.java:1320)
org.objectstyle.cayenne.access.DataContext.performQuery
(DataContext.java:1309)
model.BKFiler.fetchBankruptciesForPastYear(BKFiler.java:68)
model.Model.fetchBankruptciesForPastYear(Model.java:511)
