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niravpurohit
 Post subject: How to use database default in key-property in Composite key
PostPosted: Tue Jul 26, 2011 2:02 pm 
Newbie

Joined: Tue Oct 09, 2007 1:02 am
Posts: 5
We have a table with following columns in composite key:

1. AddDate
2. UserId
3. Password

Below is our mapping file:

Code:
<hibernate-mapping package="com.test.model">

    <class name="UsedUserPassword" table="UsedUserPassword" >
   
       <composite-id>
       
           <key-property name="addDate" type="timestamp" >
               <column name="AddDate" length="23" />
          </key-property>
          
          <key-property name="userId" type="int">
               <column name="UserID" />
          </key-property>
          
          <key-property name="password" type="string">
               <column name="Password" length="50" />
          </key-property>
          
       </composite-id>
       
    </class>
   
</hibernate-mapping>


Thus, all three columns are composite key. We are using MS-SQL DB, Hibernate 3 and want to use database default value of getdate() for AddDate column. However, there is no way to say insert="false" on AddDate column in mapping file. Please help!
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niravpurohit
 Post subject: Re: How to use database default in key-property in Composite key
PostPosted: Tue Jul 26, 2011 4:09 pm 
Newbie

Joined: Tue Oct 09, 2007 1:02 am
Posts: 5
As a workaround to the above issue, I tried to initialize the AddDate column with new java.util.Date(). This threw an error: cannot perform lookups on timestamps

Searching further I found that we can't use timestamp in composite key.

Ref:

https://forum.hibernate.org/viewtopic.php?p=2239206
https://forum.hibernate.org/viewtopic.php?t=940213
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