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我有一个 Oracle 查询，我想检查数据类型为“集合”的 Ireport 输入控制参数的内容，如下面的 SQL

select devlocview.floorname FROM AlarmDeviceView alrmDevView INNER JOIN devicelocationview devLocView ON devlocview.oid=alrmdevview.deviceoid
LEFT OUTER JOIN DEVICEGROUPVIEW devGrpView ON devlocview.oid=devgrpview.deviceoid
LEFT OUTER JOIN RackCapacityView rackCapView ON devlocview.RACKID=rackCapView.oid WHERE 
(
( $P{building.name} IS NOT NULL AND devlocview.buildingname = $P{building.name} )
       OR
       ( $P{building.name}='All Buildings' AND devlocview.buildingname IN (SELECT buildingname FROM  cdmr.devicelocationview ) )
    )
AND $X{IN, devlocview.floorname, floor.name}

这里“floor.name”是Ireport的multiselect(collection type) inputcontrol参数，其中包含用户在UI“devlocview.floorname”SQL查询输出中选择的值

现在我想做类似的事情

 IF USER SELECTS "ALL BUILDING" IN UI i.e. IF floor.name contains "ALL BUILDING"
     THEN DO SOMETHING 
   ELSE 
     THEN DO SOMETHING

我面临的问题是我无法遍历并检查类型为“collection”的 Ireport 输入控制参数“floor.name”的内容

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