MyBatis Why mybatis batchexecutor.doUpdate return Integer.MIN_VALUE + 1002?

Sorry, mybatis mail list in Google group can't be reached. MyBatis version is 3.4.4. Hi, all. When I dig into mybatis source code, I found batchExecutor.doUpdate return BATCH_UPDATE_RETURN_VALUE——Integer.MIN_VALUE + 1002. Why? Why not -1 or something else? Is there any special purpose for return the value of Integer.MIN_VALUE + 1002? There is no comment for it in the source code. Anyone can help?

Comment From: harawata

There was an old post about it: https://groups.google.com/d/msg/mybatis-user/ddRPVRzwvlc/l0Kg59srT6UJ Here is a copy on Nabble: http://mybatis-user.963551.n3.nabble.com/Re-insert-update-delete-return-values-tp4026394p4026823.html

I also watch mybatis tag on Stackoverflow. It should be accessible from China. https://stackoverflow.com/questions/ask?tags=mybatis