Custom Query with JpaPagingItemReader

Hi,

Is it possible to create a custom query with JpaPagingItemReader where I am including a group by clause and selecting only a subset of the fields from my JPA entity, something like this...

Code:

---

<bean id="DetailsDataLoader"        class="org.springframework.batch.item.database.JpaPagingItemReader"        scope="step">
                <property name="entityManagerFactory" ref="ISentityManagerFactory" />
                <property name="queryString">
                        <value>
<![CDATA[
select s. networkCompanyId, s. settlementEntity, s. dateSettlement, s. adviceComponentCode, s. productGroup,
s. productId, sum (grossAmountUsd),sum (grossAmountStl) from SettlementDetail s where s. dateSettlement <= '#{jobParameters[processDate]}' and s. adviceDate is null
group by s. networkCompanyId, s. settlementEntity, s. dateSettlement
>

</value>
                </property>

---

Thanks in advance for any help.