mongodb - 在 Mongo 聚合框架中流水线化多个展开

Question

我有一个有趣的用例，我正在处理它需要我将 Mongo 的 $unwind 运算符应用于两种数组类型（这是 mongo 文档中的一个属性）

这是一个示例，我希望过滤 2 种枚举类型 $host.config.storageDevice.scsiLun - enum("ssd","disk1","disk2") $host.config.storageDevice.scsiLun.capacity.block -范围（1000-100000）

我可以 $unwind 多个运算符并在单个聚合管道中过滤它们吗

               db["XXXXXXX"].aggregate( { $unwind : { "$host.config.storageDevice.scsiLun", "$host.config.storageDevice.scsiLun.capacity.block" } }, 
                               { $match : { "host.config.storageDevice.scsiLun.lunType" : "cdrom"  , "host.config.storageDevice.scsiLun.capacity.block" : { $gte : 60000 } , "managedObject" : "host" } } , 
                               { $project : { "host.name" : 1 , "host.config.storageDevice.scsiLun.devicePath" : 1 , "host.config.storageDevice.scsiLun.capacity.blockSize" : 1 , "host.config.storageDevice.scsiLun.capacity.block" : 1 , "host.config.storageDevice.scsiLun.ssd" : 1 , "host.config.storageDevice.scsiLun.uuid" : 1 , "host.config.storageDevice.scsiLun.lunType" : 1 , "_id" : 0  }} )

或者

我可以将复合聚合操作单元的结果链接到另一个聚合单元吗

               db["XXXXXXX"].aggregate( { $unwind : "$host.config.storageDevice.scsiLun" }, 
               { $match : { "host.config.storageDevice.scsiLun.lunType" : "cdrom"  , "managedObject" : "host" } } , 
               { $project : { "host.name" : 1 , "host.config.storageDevice.scsiLun.devicePath" : 1 , "host.config.storageDevice.scsiLun.capacity.blockSize" : 1 , "host.config.storageDevice.scsiLun.capacity.block" : 1 , "host.config.storageDevice.scsiLun.ssd" : 1 , "host.config.storageDevice.scsiLun.uuid" : 1 , "host.config.storageDevice.scsiLun.lunType" : 1 , "_id" : 0  }},
               { $unwind : "$host.config.storageDevice.scsiLun.capacity.blockSize" },
               { $match : { "host.config.storageDevice.scsiLun.capacity.blockSize" : { $gte : 8000000 } } },
               { $project : { "host.name" : 1 , "host.config.storageDevice.scsiLun.devicePath" : 1 , "host.config.storageDevice.scsiLun.capacity.blockSize" : 1 , "host.config.storageDevice.scsiLun.capacity.block" : 1 , "host.config.storageDevice.scsiLun.ssd" : 1 , "host.config.storageDevice.scsiLun.uuid" : 1 , "host.config.storageDevice.scsiLun.lunType" : 1 , "_id" : 0  }}