iBatis to MyBatis migration efforts?

Question

I am using iBatis-2.3.4.726 in my production application. I want to migrate my production application to use MyBatis.

What points i need to consider while migration process?

Is there any configuration changes or MyBatis supports iBatis configuration as deprecated commands?

Abbie

Answer 1

Before using migration guide mentioned by Satish (new repo link / wiki), make sure that you've read all the comments, especially the last one that list which changes have to be done manually after using converter:

• <procedure> is deprecated in mybatis. Converter is changing this to <update>. This will create problems where we need result set from procedure call. So manually updated with <select>.

• Dynamic query part mentioned inside <dynamic> tag are not converted by tool
• Both # and $ can be escaped by doubling in iBatis. This is not required in mybatis.
• typeAlias should be defined in sql-map-config instead of mapper itself.
• When result map with groupBy changed into mybatis style using collection, id property is not set properly by the converter.
• jdbcType="INT" is not recognized in mybatis. Updated to "INTEGER"
• nullValue in resultMap deprecated, we need to update query with ISNULL expression.

What I'd like to add is that converter seems to drop timeout parameter that could be present in <procedure> tag in iBatis. Make sure to copy all occurences to the generated XML.

Pisgah

Answer 2

The migration process is very easy, i got my answer from here

Hope this helps you too.

Abbie

Do you mean github.com/mybatis/ibatis2mybatis in the list of repos? – Floury

Answer 3

There is a tool on the Github, three steps to finish conversion.

1. make sure you have install Apache ant.
2. download code , and copy your ibatis files to the folder source
3. go to the root directory of the code and run ant

Note conversion may fail ! I got message like: Sorry, I can`t migrate WHERE See console output for further details. Hope this helps

Aftershaft