BaseBuilder#resolveTypeHandler does not account javaType for caching handlers #995
Description
MyBatis version
3.4.2
Database vendor and version
Postgres 9.6
Steps to reproduce
I have result map with 2 Enums in it for handling in sumulationaly like that:
<resultMap id="groupPlotFactMap" type="ru.rlh.egais.portal.api.dto.bo.PlotFact">
<id column="pf_document_base_fkey" property="documentId"/>
<id column="pf_unit" property="unit" typeHandler="EnumTypeHandler"/>
<id column="pf_meta" property="meta" typeHandler="EnumTypeHandler"/>
</resultMap>And class:
public class PlotFact {
private Unit unit;
private FactMeta meta;
}Expected result
Both fields mapped.
Actual result
Exception:
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'pf_meta' from result set. Cause: java.lang.IllegalArgumentException: No enum constant ru.rlh.egais.portal.api.dto.enumeration.Unit.GROUP
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
at com.sun.proxy.$Proxy1029.selectList(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:230)
at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:137)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:75)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
at com.sun.proxy.$Proxy1115.search(Unknown Source)
at ru.rlh.egais.portal.backend.service.PlotFactService.lambda$find$0(PlotFactService.java:82)
at ru.rlh.egais.portal.backend.util.SearchUtils.makeSearch(SearchUtils.java:38)
at ru.rlh.egais.portal.backend.service.PlotFactService.find(PlotFactService.java:81)
Indeed, database value GROUP belongs to secong enum ru.rlh.egais.portal.api.dto.enumeration.FactMeta instead of ru.rlh.egais.portal.api.dto.enumeration.Unit.
I start debugging and found what org.apache.ibatis.type.EnumTypeHandler instantiated once. And placed into registry by handler ignore handled target class. In source code even comment about that:
// javaType ignored for injected handlers see issue #746 for full detail
TypeHandler<?> handler = typeHandlerRegistry.getMappingTypeHandler(typeHandlerType);
But issue #746 redirect to pull request #746 which seams irrelevant.
So could you please clarify why so?
If it desired I could try provide pull request for change caching.