Bulk insert of component collection in Hibernate?
- by edbras
I have the mapping as listed below.
When I update a detached Categories item (that doesn't contain any Hibernate class as it comes from a dto converter) I notice that Hibernate will first delete ALL employer wages instances (the collection link) and then insert ALL employer wage entries ONE-BY-ONE :(...
I understand that it has to delete and then insert all entries as it was completely detached.
BUT, what I don't understand, why is Hibernate NOT inserting all the entries through bulk-insert?..
That is: inserting all the employer wage entries all in one SQL statement ?
How can I tell Hibernate to use bulk-insert? (if possible).
I tried playing with the following value but didn't see any difference:
hibernate.jdbc.batch_size=30
My mapping snippet:
<class name="com.sample.CategoriesDefault" table="dec_cats" >
<id name="id" column="id" type="string" length="40" access="property">
<generator class="assigned" />
</id>
<component name="incomeInfoMember" class="com.sample.IncomeInfoDefault">
<property name="hasWage" type="boolean" column="inMemWage"/>
...
<component name="wage" class="com.sample.impl.WageDefault">
<property name="hasEmployerWage" type="boolean" column="inMemEmpWage"/>
...
<set name="employerWages" cascade="all-delete-orphan" lazy="false">
<key column="idCats" not-null="true" />
<one-to-many entity-name="mIWaEmp"/>
</set>
</component>
</component>
</class>
