how to implement Lucene HitCollector

Hi , Please tell me how can I implement HitCollector in lucene 4.7.0, migrating from previous versions . I didn't find HitCollector in 4.7. Thanks & Regards, Narasimha.

Please help me in migrating Apache Lucene 2.9 to 4.7.0

Hi I started migrating my lucene search application from 2.9 version to 4.7.0 . Please suggest me the best way and best practices for this. There are many files to rewrite. Thank you, Narasimha.