Hibernate deletion issue
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by muffytyrone
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Published on 2010-05-07T03:59:42Z
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2010/05/07
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I'm trying to write a Java app that imports a data file. The process is as follows
- Create Transaction
- Delete all rows from datatable
- Load data file into datatable
- Commit OR Rollback if any errors were encountered.
The data loaded in step 3 is mostly the same as the data deleted in step3.
The deletion is performed using the following
DetachedCriteria criteria = DetachedCriteria.forClass(myObject.class);
List<myObject> myObjects = hibernateTemplate.findByCriteria(criteria);
hibernateTemplate.deleteAll(myObjects);
When I then load the datafile, i get the following exception
nested exception is org.hibernate.NonUniqueObjectException:
a different object with the same identifier value was already associated with the session:
The whole process needs to take place in transaction. And I don't really want to have to compare the import file / data table and then perform an insert/update/delete to get them into sync.
Any help would be appreciated.
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