[JIRA] Created: (CAY-788) prefetch can set state to modified

From: Tore Halset (JIRA) ("Tore)
Date: Tue May 08 2007 - 05:37:44 EDT

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    prefetch can set state to modified
    ----------------------------------

                     Key: CAY-788
                     URL: https://issues.apache.org/cayenne/browse/CAY-788
                 Project: Cayenne
              Issue Type: Bug
              Components: Cayenne Core Library
        Affects Versions: 2.0 [STABLE]
             Environment: cayenne-2.0.2, java 5, a mac, PostgreSQL and Derby
                Reporter: Tore Halset

    I have a situation where adding a prefetch to a simple select query set the persistence state to "modified" even though they are not modified. Here are the stacktrace to where the state are set to modified:

            at no.ecc.gds.data.GdsCellUpdate.setPersistenceState(GdsCellUpdate.java:47)
            at org.apache.cayenne.access.ObjectStore.registerDiff(ObjectStore.java:167)
            at org.apache.cayenne.access.DataContext.propertyChanged(DataContext.java:1838)
            at org.apache.cayenne.CayenneDataObject.writeProperty(CayenneDataObject.java:227)
            at org.apache.cayenne.access.PrefetchProcessorNode.linkToParent(PrefetchProcessorNode.java:90)
            at org.apache.cayenne.access.ObjectTreeResolver$DisjointProcessor.startDisjointPrefetch(ObjectTreeResolver.java:359)
            at org.apache.cayenne.query.PrefetchTreeNode.traverse(PrefetchTreeNode.java:167)
            at org.apache.cayenne.query.PrefetchTreeNode.traverse(PrefetchTreeNode.java:180)
            at org.apache.cayenne.access.ObjectTreeResolver.resolveObjectTree(ObjectTreeResolver.java:87)
            at org.apache.cayenne.access.ObjectTreeResolver.synchronizedObjectsFromDataRows(ObjectTreeResolver.java:69)
            at org.apache.cayenne.access.DataDomainQueryAction.interceptObjectConversion(DataDomainQueryAction.java:328)
            at org.apache.cayenne.access.DataDomainQueryAction.execute(DataDomainQueryAction.java:116)
            at org.apache.cayenne.access.DataDomain.onQuery(DataDomain.java:746)
            at org.apache.cayenne.util.ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java:217)
            at org.apache.cayenne.access.DataContextQueryAction.execute(DataContextQueryAction.java:54)
            at org.apache.cayenne.access.DataContext.onQuery(DataContext.java:1387)
            at org.apache.cayenne.access.DataContext.performQuery(DataContext.java:1376)

    Here are the query:
            DataContext ctxt = createDataContext();
            SelectQuery query = new SelectQuery(A.class);
            query.addPrefetch(A.B_PROPERTY);
            List daos = ctxt.performQuery(query);

    The relationship is a one-to-one and the primary key are compond of one String and 3 ints. 

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