Examples of org.datanucleus.store.query.ResultObjectFactory

org.datanucleus.store.query.ResultObjectFactory
An object that reads result set rows and returns corresponding object(s) from them. Different queries accomplish this in different ways so a query supplies a suitable ResultObjectFactory to each QueryResult when it is executed. The QueryResult only uses it to turn ResultSet rows into objects and otherwise manages the ResultSet itself.
For example an implementation of this interface could return a single Persistent object per row (PersistentIDROF). Another implementation could return all columns of the result set as separate objects.
@see QueryResult

                            // No ResultObjectFactory needed - handled by SetStoreIterator
                            return new RDBMSArrayStoreIterator(ownerSM, rs, null, this);
                        }
                        else
                        {
                            ResultObjectFactory rof = storeMgr.newResultObjectFactory(emd, 
                                iteratorMappingClass, false, null, clr.classForName(elementType));
                            return new RDBMSArrayStoreIterator(ownerSM, rs, rof, this);
                        }
                    }
                    finally

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                            // No ResultObjectFactory needed - handled by SetStoreIterator
                            return new RDBMSListStoreIterator(ownerSM, rs, null, this);
                        }
                        else
                        {
                            ResultObjectFactory rof = storeMgr.newResultObjectFactory(emd, 
                                resultDefinition, false, null, clr.classForName(elementType));
                            return new RDBMSListStoreIterator(ownerSM, rs, rof, this);
                        }
                    }
                    finally

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                try
                {
                    ResultSet rs = sqlControl.executeStatementQuery(mconn, stmt, ps);
                    try
                    {
                        ResultObjectFactory rof = null;
                        if (elementsAreEmbedded || elementsAreSerialised)
                        {
                            throw new NucleusException("Cannot have FK array with non-persistent objects");
                        }
                        else

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                    try
                    {
                        if (evaluateInMemory())
                        {
                            // IN-MEMORY EVALUATION
                            ResultObjectFactory rof = storeMgr.newResultObjectFactory(acmd, 
                                datastoreCompilation.getResultDefinitionForClass(),
                                RDBMSQueryUtils.useUpdateLockForQuery(this), getFetchPlan(), 
                                candidateClass);


                            // Just instantiate the candidates for later in-memory processing
                            // TODO Use a queryResult rather than an ArrayList so we load when required
                            List candidates = new ArrayList();
                            while (rs.next())
                            {
                                candidates.add(rof.getObject(ec, rs));
                            }


                            // Perform in-memory filter/result/order etc
                            JavaQueryEvaluator resultMapper = 
                                new JPQLEvaluator(this, candidates, compilation, parameters, clr);
                            results = resultMapper.execute(true, true, true, true, true);
                        }
                        else
                        {
                            // IN-DATASTORE EVALUATION
                            ResultObjectFactory rof = null;
                            if (result != null)
                            {
                                // Each result row is of a result type
                                rof = new ResultClassROF(resultClass, datastoreCompilation.getResultDefinition());
                            }

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                            // No ResultObjectFactory needed - handled by SetStoreIterator
                            return new RDBMSSetStoreIterator(ownerSM, rs, null, this);
                        }
                        else
                        {
                            ResultObjectFactory rof = storeMgr.newResultObjectFactory(emd, 
                                iteratorMappingClass, false, null, clr.classForName(elementType));
                            return new RDBMSSetStoreIterator(ownerSM, rs, rof, this);
                        }
                    }
                    finally

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                try
                {
                    ResultSet rs = sqlControl.executeStatementQuery(mconn, stmt, ps);
                    try
                    {
                        ResultObjectFactory rof = null;
                        if (elementsAreEmbedded || elementsAreSerialised)
                        {
                            // No ResultObjectFactory needed - handled by SetStoreIterator
                            return new RDBMSSetStoreIterator(ownerSM, rs, null, this);
                        }

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                            value = valueMapping.getObject(ec, rs, param);
                        }
                        else
                        {
                            // Value = PC
                            ResultObjectFactory rof = storeMgr.newResultObjectFactory(vmd, 
                                getMappingDef, false, null, clr.classForName(valueType));
                            value = rof.getObject(ec, rs);
                        }


                        JDBCUtils.logWarnings(rs);
                    }
                    finally

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                try
                {
                    ResultSet rs = sqlControl.executeStatementQuery(mconn, stmt, ps);
                    try
                    {
                        ResultObjectFactory rof = null;
                        if (elementsAreEmbedded || elementsAreSerialised)
                        {
                            throw new NucleusException("Cannot have FK set with non-persistent objects");
                        }
                        else

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                    try
                    {
                        if (inMemory)
                        {
                            // IN-MEMORY EVALUATION
                            ResultObjectFactory rof = storeMgr.newResultObjectFactory(acmd, 
                                datastoreCompilation.getResultDefinitionForClass(),
                                RDBMSQueryUtils.useUpdateLockForQuery(this), getFetchPlan(), 
                                candidateClass);


                            // Just instantiate the candidates for later in-memory processing
                            // TODO Use a queryResult rather than an ArrayList so we load when required
                            List candidates = new ArrayList();
                            while (rs.next())
                            {
                                candidates.add(rof.getObject(ec, rs));
                            }


                            // Perform in-memory filter/result/order etc
                            JavaQueryEvaluator resultMapper = 
                                new JDOQLEvaluator(this, candidates, compilation, parameters, clr);
                            results = resultMapper.execute(true, true, true, true, true);
                        }
                        else
                        {
                            // IN-DATASTORE EVALUATION
                            ResultObjectFactory rof = null;
                            if (result != null)
                            {
                                // Each result row is of a result type
                                rof = new ResultClassROF(resultClass, datastoreCompilation.getResultDefinition());
                            }

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                            value = valueMapping.getObject(ec, rs, param);
                        }
                        else
                        {
                            // Value = PC
                            ResultObjectFactory rof = storeMgr.newResultObjectFactory(vmd, 
                                getMappingDef, false, null, clr.classForName(valueType));
                            value = rof.getObject(ec, rs);
                        }


                        JDBCUtils.logWarnings(rs);
                    }
                    finally

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org.datanucleus.store.rdbms.fieldmanager.ResultSetGetter

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org.datanucleus.store.rdbms.query.JPQLQuery

org.datanucleus.store.rdbms.query.SQLQuery

org.datanucleus.store.rdbms.scostore.RDBMSFKArrayStore

org.datanucleus.store.rdbms.scostore.RDBMSFKListStore

org.datanucleus.store.rdbms.scostore.RDBMSFKMapStore

org.datanucleus.store.rdbms.scostore.RDBMSFKSetStore

org.datanucleus.store.rdbms.scostore.RDBMSJoinArrayStore

org.datanucleus.store.rdbms.scostore.RDBMSJoinListStore

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