How to use Classifier with ClassifierCompositeItemWriter?

Question

have trouble implementing a ClassifierCompositeItemwriter...

I am reading a basic CSV File and i want to write them do a database. Depending on the data (Name + Name

Answer 1

You classifier should be like this:

public class MySpecialClassifier implements Classifier<MyObject, ItemWriter<? super MyObject>> {

    @Autowired
    ItemWriter<MyObject> writer1;

    @Autowired
    ItemWriter<MyObject> writer2;

    @Override
    public ItemWriter<MyObject> classify(MyObject obj) {

        if (!obj.getName().isEmpty() && !obj.getName1().isEmpty()) {
            return writer1;
        } else {
            return writer2;
        }
    }

}

The only difference is implements Classifier<MyObject, ItemWriter<? super MyObject>> instead of implements Classifier<MyObject, ItemWriter<MyObject>>.

This is because an item writer can not only write MyObject items but also items of a superclass of MyObject.