iBatis to MyBatis migration efforts?

user_1144932 0
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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?

mybatis ibatis
3 Answers

Before using migration guide mentioned by Satish, 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.

user_19951700

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

user_55273410
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