only one parameter not use @param, may not work for DynamicSqlSource

[xiaolongzhao2015]

MyBatis version
3.4.6

Database vendor and version
5.7.20

i has a question in mybatis:3.4.6;
#the sql refer method
List selectOnlyIf(String entryDate);

when our sql has only one parameter, it't not must to add @param annotation;
as follow, this run ok,

SELECT  * from tb_userInfo
 where entry_date = #{entryDate}
  order by id desc

is's because when runing,in MapperMethod.convertArgsToSqlCommandParam inner,
it jude, when don't have @param and paramCount=1, it's return origin parameterObject;

but,when my SQL change as follow:
SELECT * from tb_userInfo where <if test="entryDate!=null"> entry_date = #{entryDate} </if> order by id desc

this sql will change to dynamic;
when DynamicSqlSource => rootSqlNode.apply(context);
rootSqlNode while contain four SqlNode: StaticTextSqlNode,StaticTextSqlNode,IfSqlNode,StaticTextSqlNode

when IfSqlNode apply:
evaluator.evaluateBoolean(test, context.getBindings()))
here it real like: evaluator.evaluateBoolean("entryDate!=null", context.getBindings()))

DynamicContext has two key:
_parameter: ?
_databaseId: null
MetaObject parameterMetaObject,here,it's string;

OGNL.getValue, can't find any key for entryDate,will thrown error;

So, only one parameter not use @param can use for RawSqlSource,
but not apply for DynamicSqlSource,
this design, is a problem or we use it in the wrong way ?

[kazuki43zoo]

@xiaolongzhao2015

Could you try latest version (3.5.5)? Probably, this issue has been fixed since 3.5.2 via gh-1487.

[kazuki43zoo]

If you cannot upgrade to 3.5.2+, you need to use the _parameter instead of argument name like as _parameter!=null. By the way, we have no plan that backport gh-1487 to 3.4.x line.

Thanks.

[xiaolongzhao2015]

thank you very much for so rapid response;
i just pull the newest version 3.5.5, and look. and run test; it' ok;
and is there any new features introduce when every new version publish,
i want to follow and study, because i study code just for version 3.4.6,
when new version, i can diff new features and to study

[kazuki43zoo]

In latest version, there are many enhancements from 3.4.x.
I suggest to confirm a release note on GitHub about new features and enhancements.

• https://github.com/mybatis/mybatis-3/releases