ResultMap Method Mapping
------------------------
Key: IBATIS-133
URL: http://issues.apache.org/jira/browse/IBATIS-133
Project: iBatis for Java
Type: New Feature
Components: SQL Maps
Versions: 2.1.1
Reporter: Brandon Goodin
Fix For: 2.1.1
Method mapping should be supported in ibatis to map to non-javaBean methods.
Following are some whiteboard ideas for this:
A standard verbose mapping -
<resultMap>
<method
name="methodName"
signature="propertyA,propertyB"
javaTypes="integer,string"
jdbcTypes="INTEGER,VARCHAR"
columns="PROPERTY_A,PROPERTY_B" />
</resultMap>
If types map cleanly between columns and java types some configuration can be
avoided -
<resultMap>
<method
name="methodName"
signature="propertyA,propertyB"
columns="PROPERTY_A,PROPERTY_B" />
</resultMap>
column Indexes should also be supported -
<resultMap>
<method
name="methodName"
signature="propertyA,propertyB"
columnIndexes="3,8" />
</resultMap>
we could also use the method mapping for constructors as well. Only one
constructor method type can exist per resultMap. type="method" would be the
default unspecified method type.
<resultMap>
<method
type="constructor"
name="methodName"
signature="propertyA,propertyB"
columnIndexes="3,8" />
</resultMap>
Something else to consider is how a method signature can be mapped to both
complex objects and simple objects. Perhaps we need to go with a more verbose
mapping.
<resultMap>
<method type="standard" name="methodName">
<parameter propertyA" column="PROPERTY_A" />
<parameter propertyB" column="PROPERTY_B" />
<parameter propertyC" column="PROPERTY_C" select="anotherResultMap" />
</method>
</resultMap>
Not sure if we would want to support both or just one type. But, those are the
ideas.
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