Updation issue in child table using hibernate -

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i have 2 tables, a & b having one-to-many relation.

for using list collection inside parent pojo.

the code of hbm file of a is:

    <bag name="uifunrecogniseschooldetaillist" cascade="all">         <key not-null="true" update="false">             <column name="uif_detail_state_code"></column>             <column name="uif_detail_district_code"></column>             <column name="uif_detail_town_code"></column>             <column name="uif_detail_ward_code"></column>         </key>         <one-to-many class="com.aises.pojo.uifunrecogniseschooldetails"/>     </bag>

when insert new records in table data inserted without problem using saveorupate() method. when insert same records again update existing record in parent table (which right) insert new records in child table, wrong. should updated records in child table parent table. how can solve problem?

thanks


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