skippable-exception-classes in spring batch to skip only one row - spring

Question

I am new to spring batch , the csv file for example
Employee Name Id age year
Department DeptName deptId desc
Department DeptName deptId desc
Employee Name Id age year
Department DeptName deptId desc
Department DeptName deptId desc
This is my format
If that employer with name exists mysql will throw DataIntegrityViolationException
So i added
<batch:skippable-exception-classes>
<batch:include class="org.springframework.dao.DataIntegrityViolationException" />
</batch:skippable-exception-classes>
So this will skip the whole unit the corresponding Employer and Department records
what I have to do even if the Employee exists and throws this Exception
Then to continue with Department.

Answer 1

I would recommend to use item classifier
public class ItemTypeClassifier {
#Classifier
public String classify(Item item) {
return item.getType();// returns "Employee", "Department"
}
}
Then a router implementation with two different item writer, one for employee and one for department.
<bean id="classifier" class="org.springframework.batch.classify.BackToBackPatternClassifier">
<property name="routerDelegate">
<bean class="ItemTypeClassifier" />
</property>
<property name="matcherMap">
<map>
<entry key="Employee" value-ref="emplyeeItemWriter" />
<entry key="Department" value-ref="departmentItemWriter" />
</map>
</property>
</bean>
And then
<bean id="ItemWriter" class="org.springframework.batch.item.support.ClassifierCompositeItemWriter">
<property name="classifier" ref="classifier" />
</bean>
Now that you have two different writer, you can run two steps inside your job by defining two separate skippable exceptions configuration for them.