我有一个结果图：
<resultMap type="cz.pse.agata.commons.dto.Security" id="detailed_security">
<result property="id" column="VAID"/>
<result property="issueId" column="VAIDVA"/>
<result property="effectiveDate" column="VAEFDT"/>
<result property="bic" column="VABIC"/>
.
.
.
<association property="isin" column="VACVAL" javaType="cz.pse.agata.commons.dto.ISIN">
<result property="isin" column="VACVAL"/>
</association>
<association property="legalPerson" javaType="cz.pse.agata.commons.dto.LegalPerson"
resultMap="legalPerson" columnPrefix="specialist_person_"/>
</association>
<association property="emitent" column="VAEMIT" javaType="cz.pse.agata.commons.dto.LegalPerson"
resultMap="cz.pse.agata.commons.dto.mapper.LegalPersonMapper.legalPerson"/>
<association property="administrator" column="VAIDAD" javaType="cz.pse.agata.commons.dto.LegalPerson"
resultMap="legalPerson"/>
<association property="changeReason" column="VAIDCD" javaType="cz.pse.agata.commons.dto.ChangeReason">
<result property="id" column="CDID"/>
<result property="reason" column="CDTEXT"/>
</association>
<association property="tail" javaType="Object">
<discriminator javaType="String" column="VATVAL">
<case value="000" resultType="cz.pse.agata.commons.dto.SecurityTailImpl">
<result property="issueId" column="VAIDVA"/>
</case>
<case value="520" resultType="cz.pse.agata.commons.dto.SecurityTailImpl">
<result property="issueId" column="VAIDVA"/>
</case>
<case value="100" resultMap="cz.pse.cp.dto.mapper.BondMapper.Bond"/>
<case value="150" resultMap="cz.pse.cp.dto.mapper.BondMapper.Bond"/>
<case value="200" resultMap="cz.pse.cp.dto.mapper.BondMapper.Bond"/>
<case value="500" resultType="cz.pse.agata.commons.dto.SecurityTailImpl">
<result property="issueId" column="VAIDVA"/>
</case>
<case value="510" resultType="cz.pse.agata.commons.dto.SecurityTailImpl">
<result property="issueId" column="VAIDVA"/>
</case>
<case value="610" resultMap="cz.pse.cp.dto.mapper.WarrantMapper.Warrant"/>
<case value="660" resultMap="cz.pse.cp.dto.mapper.WarrantMapper.Warrant">
<result property="id" column="WAID"/>
</case>
<case value="600" resultMap="cz.pse.cp.dto.mapper.InvestementCertificateMapper.InvestementCertificate"/>
<case value="650" resultMap="cz.pse.cp.dto.mapper.InvestementCertificateMapper.InvestementCertificate"/>
<case value="300" resultType="cz.pse.agata.commons.dto.SecurityTailImpl">
<result property="issueId" column="VAIDVA"/>
</case>
<case value="305" resultType="cz.pse.agata.commons.dto.SecurityTailImpl">
<result property="issueId" column="VAIDVA"/>
</case>
<case value="400" resultType="cz.pse.agata.commons.dto.SecurityTailImpl">
<result property="issueId" column="VAIDVA"/>
</case>
</discriminator>
</association>
</resultMap>
我有一个查询，返回 4 行：
==> Preparing: with dates as ( select vaefdt as dat from ....
==> Parameters: 109735(Long), 109735(Long), ....
<== Total: 4
但结果列表仅包含 3 项目。
经过一些调试后，我意识到它发生了（可能），因为除了 tail 值之外，4行中的2行所有数据都相同：
（方法org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForNestedResultMap（ResultSetWrapper，ResultMap，ResultHandler，RowBounds，ResultMapping））
private void handleRowValuesForNestedResultMap(ResultSetWrapper rsw, ResultMap resultMap, ResultHandler resultHandler, RowBounds rowBounds, ResultMapping parentMapping) throws SQLException {
final DefaultResultContext resultContext = new DefaultResultContext();
skipRows(rsw.getResultSet(), rowBounds);
Object rowValue = null;
while (shouldProcessMoreRows(resultContext, rowBounds) && rsw.getResultSet().next()) {
final ResultMap discriminatedResultMap = resolveDiscriminatedResultMap(rsw.getResultSet(), resultMap, null);
final CacheKey rowKey = createRowKey(discriminatedResultMap, rsw, null);
Object partialObject = nestedResultObjects.get(rowKey);
// issue #577 && #542
if (mappedStatement.isResultOrdered()) {
if (partialObject == null && rowValue != null) {
nestedResultObjects.clear();
storeObject(resultHandler, resultContext, rowValue, parentMapping, rsw.getResultSet());
}
rowValue = getRowValue(rsw, discriminatedResultMap, rowKey, rowKey, null, partialObject);
} else {
rowValue = getRowValue(rsw, discriminatedResultMap, rowKey, rowKey, null, partialObject);
if (partialObject == null) {
storeObject(resultHandler, resultContext, rowValue, parentMapping, rsw.getResultSet());
}
}
}
if (rowValue != null && mappedStatement.isResultOrdered() && shouldProcessMoreRows(resultContext, rowBounds)) {
storeObject(resultHandler, resultContext, rowValue, parentMapping, rsw.getResultSet());
}
}
注意上面的粗体文字：对于第二次迭代，创建了正确的 rowValue ，但它没有添加到结果中，因为 partialObject 不为空。
任何帮助都将不胜感激。