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

        createPaintingsDataSet();


        String ejbql = "delete from Painting";
        EJBQLQuery query = new EJBQLQuery(ejbql);


        QueryResponse result = context.performGenericQuery(query);


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

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        createPaintingsDataSet();


        String ejbql = "delete from Painting AS p";
        EJBQLQuery query = new EJBQLQuery(ejbql);


        QueryResponse result = context.performGenericQuery(query);


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

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        createPaintingsDataSet();


        String ejbql = "delete from Painting AS p WHERE p.paintingTitle = 'P2'";
        EJBQLQuery query = new EJBQLQuery(ejbql);


        QueryResponse result = context.performGenericQuery(query);


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


        ObjectContext freshContext = runtime.getContext();

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        String ejbql = "delete from MeaningfulPKTest1 m WHERE m.pkAttribute in (:id)";


        EJBQLQuery query = new EJBQLQuery(ejbql);
        query.setParameter("id", id);
        QueryResponse result = context.performGenericQuery(query);


        int[] count = result.firstUpdateCount();
        assertNotNull(count);
        assertEquals(1, count.length);
        assertEquals(33, count[0]);
    }

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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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            return null;
        }


        // skip context cache lookup, go directly to its channel
        Query query = new ObjectIdQuery((ObjectId) nodeId);
        QueryResponse response = context.getChannel().onQuery(context, query);
        List objects = response.firstList();


        if (objects.size() == 0) {
            throw new CayenneRuntimeException("No object for ID exists: " + nodeId);
        }
        else if (objects.size() > 1) {

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     * @throws TransactionRequiredException if there is no transaction
     */
    public int executeUpdate() {
        // TODO: check transaction


        QueryResponse response = context.performGenericQuery(getQuery());
        int[] res = response.firstUpdateCount();


        if (res == null) {
            return -1;
        }

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            return null;
        }


        // skip context cache lookup, go directly to its channel
        Query query = new ObjectIdQuery((ObjectId) nodeId);
        QueryResponse response = context.getChannel().onQuery(context, query);
        List objects = response.firstList();


        if (objects.size() == 0) {
            throw new CayenneRuntimeException("No object for ID exists: " + nodeId);
        }
        else if (objects.size() > 1) {

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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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        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);

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org.apache.cayenne.access.ChildDiffLoader

org.apache.cayenne.access.ClientServerChannelTest

org.apache.cayenne.access.DataContextEJBQLDeleteTest

org.apache.cayenne.access.DataContextEJBQLUpdateTest

org.apache.cayenne.access.DataContextQueryChainTest

org.apache.cayenne.access.DataDomainFiltersTest

org.apache.cayenne.ashwood.AshwoodEntitySorter

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org.apache.cayenne.jpa.JpaQuery

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