extending resultMap

[Greg Fitzgerald]

is there a way to do this.
e.g rather than do
<resultMap id="sql1" class="aClass">
  <result property="one" column="one"/>
</resultMap>

<resultMap id="sql2" class="aClass">
  <result property="one" column="one"/>
  <result property="two" column="two"/>
</resultMap>

instead do
<resultMap id="sql2" extendId ="sql1" class="aClass">
  <result property="two" column="two"/>
</resultMap>

in order to avoid duplication.

[Ted Husted]

The attribute you are looking for is "extends":

<resultMap id=resultMapName class=some.domain.Class [extends=parent-resultMap]>
<result property=propertyName column=COLUMN_NAME
[columnIndex=1] [javaType=int] [jdbcType=NUMERIC]
[nullValue=-999999] [select=someOtherStatement]
/>
<result />
<result />
<result />
</resultMap>

(from page 22 of DevGuide 2)

In the C# implementation, we are experimenting with using extends with a parameterMap, since the difference between an Insert and an Update is often whether an additional field is specified (for the WHERE clause).

-Ted.

[Greg Fitzgerald]

Thanks Ted, BTW, i found your struts book excellent