select distinct pp.projectNo, pp.projectName, pp.applyNo
  from PrpSprojectMain pp
 where pp.projectNo in
       (select distinct case
                          when ms.subjectType = 'C' then
                           (select distinct p.projectNo
                              from PrpSprojectMain p
                             where p.applyNo = ms.businessNo)
                          when ms.subjectType = 'R' then
                           (select distinct p.projectNo
                              from PrpSprojectMain p
                             where p.projectNo in
                                   (select re.projectNo
                                      from PrpSprojectRenew re
                                     where re.renewNo = ms.businessNo))
                          when ms.subjectType = 'E' then
                           (select distinct p.projectNo
                              from PrpSprojectMain p
                             where p.applyNo in
                                   (select en.applyNo
                                      from PrpSprojectEndorMain en
                                     where en.endorNo = ms.businessNo))
                        end
          from MessageSubject ms
         where ms.subject like '%临分编辑%')

]] Root cause of ServletException.
java.lang.NullPointerException
    at org.hibernate.hql.ast.tree.CaseNode.getDataType(CaseNode.java:17)
    at org.hibernate.hql.ast.tree.SelectClause.initializeExplicitSelectClause(SelectClause.java:143)
    at org.hibernate.hql.ast.HqlSqlWalker.useSelectClause(HqlSqlWalker.java:712)
    at org.hibernate.hql.ast.HqlSqlWalker.processQuery(HqlSqlWalker.java:536)
    at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:645)
    Truncated. see log file for complete stacktrace
>