TypeHandlerAssociations

JdbcType To R2dbcType

• By default, mybatis-r2dbc mapping JdbcType to R2dbcType by name.DefaultR2DbcTypeMappingFactory

• You can configure other mappings or replace original mappings by using method in R2dbcMybatisConfiguration

  r2dbcMybatisConfiguration.registerR2dbcTypeMapping(JdbcType.xxx, R2dbcType.xxx);

R2dbcTypeHandlerAdapter

• R2dbcTypeHandlerAdapter is used to customize type handler with r2dbc
• The default implementations is R2dbcTypeHandlerAdapter Package
• Register R2dbcTypeHandlerAdapter:

  r2dbcMybatisConfiguration.getR2dbcTypeHandlerAdapterRegistry().register( ... );

• If both TypeHandler of mybatis3 and R2dbcTypeHandlerAdapter of mybatis-r2dbc exist, and you want force using R2dbcTypeHandlerAdapter, you need configure typehandler as below

  • For parameter map

    <parameterMap>
        <!-- ...... -->
        <parameter property="clobContent" jdbcType="CLOB" typeHandler="pro.chenggang.project.reactive.mybatis.support.r2dbc.executor.type.support.ForceToUseR2dbcTypeHandlerAdapter"/>
        <!-- or  with type alias -->
        <parameter property="clobContent" jdbcType="CLOB" typeHandler="ForceToUseR2dbcTypeHandlerAdapter"/>
    </parameterMap>

  • For result map

    <resultMap>
        <!-- ...... -->
        <result column="blob_content" property="blobContent" typeHandler="pro.chenggang.project.reactive.mybatis.support.r2dbc.executor.type.support.ForceToUseR2dbcTypeHandlerAdapter"/>
        <!-- or  with type alias -->
        <result column="blob_content" property="blobContent" typeHandler="ForceToUseR2dbcTypeHandlerAdapter"/>
    </resultMap>

  • Configure with R2dbcMybatisConfiguration

    r2dbcMybatisConfiguration.getTypeHandlerRegistry().register(Clob.class, JdbcType.CLOB, ForceToUseR2dbcTypeHandlerAdapter.class);

  • It also can be configured with annotation as well

MybatisTypeHandlerConverter

• If you already have TypeHandler of mybatis3 with dynamic type like enums, you can use MybatisTypeHandlerConverter to converter TypeHandler to R2dbcTypeHandlerAdapter
• EnumTypeHandler and EnumOrdinalTypeHandler have already configured by EnumMybatisTypeHandlerConverter and EnumOrdinalMybatisTypeHandlerConverter by default.
• Against the internal default configuration in mybatis-r2dbc , all enums work correctly.
• Enums Related Test