Examples of org.apache.cayenne.QueryResponse

org.apache.cayenne.QueryResponse
} else { int[] updateCounts = response.currentUpdateCount(); // ... } }
In case the structure of the result is known, and only a single list or an update count is expected, there is a simpler API to access them:
```
 QueryResponse response = context.performGenericQuery(query); List list = response.firstList(); int[] count = response.firstUpdateCount(); 
```
@since 1.2

        assertEquals(new Long(2l), notUpdated);


        String ejbql = "UPDATE Painting AS p SET p.estimatedPrice = 1.1";
        EJBQLQuery query = new EJBQLQuery(ejbql);


        QueryResponse result = context.performGenericQuery(query);


        int[] count = result.firstUpdateCount();
        assertNotNull(count);
        assertEquals(1, count.length);
        assertEquals(2, count[0]);


        notUpdated = Cayenne.objectForQuery(context, check);

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        assertEquals(new Long(1l), notUpdated);


        String ejbql = "UPDATE BooleanTestEntity AS p SET p.booleanColumn = true";
        EJBQLQuery query = new EJBQLQuery(ejbql);


        QueryResponse result = context.performGenericQuery(query);


        int[] count = result.firstUpdateCount();
        assertNotNull(count);
        assertEquals(1, count.length);
        assertEquals(3, count[0]);


        notUpdated = Cayenne.objectForQuery(context, check);

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        String ejbql = "UPDATE Painting AS p SET p.toArtist = :artist";
        EJBQLQuery query = new EJBQLQuery(ejbql);
        query.setParameter("artist", object);


        QueryResponse result = context.performGenericQuery(query);


        int[] count = result.firstUpdateCount();
        assertNotNull(count);
        assertEquals(1, count.length);
        assertEquals(2, count[0]);


        notUpdated = Cayenne.objectForQuery(context, check);

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        String ejbql = "UPDATE CompoundFkTestEntity e SET e.toCompoundPk = :param";
        EJBQLQuery query = new EJBQLQuery(ejbql);
        query.setParameter("param", object);


        QueryResponse result = context.performGenericQuery(query);


        int[] count = result.firstUpdateCount();
        assertNotNull(count);
        assertEquals(1, count.length);
        assertEquals(2, count[0]);


        notUpdated = Cayenne.objectForQuery(context, check);

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        QueryChain chain = new QueryChain();
        chain.addQuery(new SelectQuery(Artist.class));
        chain.addQuery(new SelectQuery(Artist.class));


        QueryResponse r = context.performGenericQuery(chain);


        // data comes back as datarows
        assertEquals(2, r.size());
        r.reset();
        r.next();
        List l1 = r.currentList();
        r.next();
        List l2 = r.currentList();
        
        assertTrue(l1.get(0) instanceof DataRow);
        assertTrue(l2.get(0) instanceof DataRow);
    }

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        return eventManager;
    }


    public QueryResponse onQuery(ObjectContext context, Query query) {


        QueryResponse response = (QueryResponse) send(
                new QueryMessage(query),
                QueryResponse.class);


        // if needed, register objects in provided context, rewriting the response
        // (assuming all lists are mutable)


        if (context != null) {


            EntityResolver resolver = context.getEntityResolver();
            QueryMetadata info = query.getMetaData(resolver);


            if (!info.isFetchingDataRows()) {


                response.reset();


                while (response.next()) {
                    if (response.isList()) {


                        List objects = response.currentList();


                        if (!objects.isEmpty()) {


                            DeepMergeOperation merger = new DeepMergeOperation(context);
                            List<Object> rsMapping = info.getResultSetMapping();

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        DataMap dataMap = new DataMap("test");
        dataMap.addObjEntity(entity);
        Collection<DataMap> entities = Collections.singleton(dataMap);
        context.setEntityResolver(new EntityResolver(entities));


        QueryResponse response = channel.onQuery(context, new SelectQuery("test_entity"));
        assertNotNull(response);
        List<?> list = response.firstList();
        assertNotNull(list);
        assertEquals(1, list.size());
        Persistent o1_1 = (Persistent) list.get(0);


        assertEquals(o1.getObjectId(), o1_1.getObjectId());

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                false,
                new MockEventManager(),
                false);


        context.setChannel(channel);
        QueryResponse response = channel.onQuery(context, new SelectQuery("test_entity"));
        assertNotNull(response);


        List<?> list = response.firstList();
        assertNotNull(list);
        assertEquals(1, list.size());
        assertTrue("Expected cached object, got: " + list, list.contains(o1));
        assertSame(o1, context.getGraphManager().getNode(oid));
    }

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                false,
                new MockEventManager(),
                false);


        context.setChannel(channel);
        QueryResponse response = channel.onQuery(context, new SelectQuery("test_entity"));
        assertNotNull(response);
        assertEquals(1, response.size());
        List<?> list = response.firstList();
        assertNotNull(list);
        assertEquals(1, list.size());
        assertTrue("Expected cached object, got: " + list, list.contains(o1));
        assertSame(o1, context.getGraphManager().getNode(oid));
    }

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        ObjectIdQuery query = new ObjectIdQuery(
                object.getObjectId(),
                true,
                ObjectIdQuery.CACHE);
        QueryResponse response = context.getChannel().onQuery(null, query);
        List<?> result = response.firstList();
        if (result == null || result.size() == 0) {
            return null;
        }


        DataRow snapshot = (DataRow) result.get(0);

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