使用持久化实体查询出现异常：Caused by: java.lang.RuntimeException: Can't convert class "com.primeton.data.sdo.impl.DataObjectImpl" to "com.primeton.lianxi.bpsdataset.TreeOrg".

【问题描述】

queryEntitiesByCriteriaEntity结合持久化实体查询报错：Caused by: java.lang.RuntimeException: Can't convert class "com.primeton.data.sdo.impl.DataObjectImpl" to "com.primeton.lianxi.bpsdataset.TreeOrg".

关键代码：

IDASCriteria dasCriteria = getDASTemplate().createCriteria(TreeOrg.QNAME);

dasCriteria.add(ExpressionHelper.eq("pid", id));

TreeOrg[]results = getDASTemplate().queryEntitiesByCriteriaEntity(

                      TreeOrg.class, dasCriteria);

【解答】

TreeOrg类所在的com.primeton.lianxi.bpsdataset.datasetx中的TreeOrg实体没有设置实例类，双击TreeOrg，在持久化实体属性设置—>描述—>实例类，把实例类加上