Rule Match-An Important Issue In RFID Middleware

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Rule Match-An Important Issue In RFID Middleware
????RFID??????????
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??

• RFID????RFID?????????????RFID?????????
  ?????????????????,?????????????????????????????,??
  ???????????,??????????????????RETE??,?????RFID????
  ???????,??????????

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1???

• ??,????????????????????????????????????,
  RFID????????????????????,??????,??????????,???????
  ????????,?????????????????,???????????????,??,????
  ?????????????????RFID???

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2?????

• ???????????????2005?,
• EPCglobal???ALE(Application Level Event)??,
• ???????RFID???????ALE?????
• ?,????????????????,????
• ????????????????,ALE?????
• ???????????????,????????
• ????????RFID???,????????ALE
• ?,????CEP?????CEP??????????
• ????????,??????????????
• ?,?????????,????????????
• ??,???????ECSpec????

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2?????

• ?????????????(EPL)???
• ???EPL??????-??-??(ECA),????
• ????????????,??????????
• ?????????????,???????(Cache
• strategy)???????(active database)?
• ???3??????????????,???
• ?????????????????,??????
• ???????????????????????
• (CEA),?????2?,???CEL?????
• ?????????
• ???4???????????????????
• ???????????????????

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2?????

• ????????????????????????
• ???????(RBPTS)?RBPTS????????
• ???????????????RBPTS??????
• ??????RFID????????????,??
• ?????????????????????RFID?
• ?????,??????????????????
• ?,??????????????????????
• ???????3???????,???????,
• ????,????????,????,?????
• ???????????,????????????1.
• ????????????,???????????
• ??????????

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2?????
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3.RETE ? ??RETE

• 3.1 RETE??
• ???RFID??????????????????
• ?1800??????????,??????????
• ???RFID??,??????,?RETE??????
• ??????????
• RETE??????????????,?EPCglobal
• ??????????????????????,?
• ????????????RETE????????
• ?????????????,??????????
• ??????????????,?????????
• ??????????????RETE????

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3.RETE ? ??RETE

• ????1-put??????????????,??
• 2-inputs???????????????????
• ????????????????????????
• ??????,????????terminal node,??
• ?????????
• 3.2 ??????RETE??
• ???7??????????????,?????
• ??????????????????????
• ?,?????,??????

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3.RETE ? ??RETE

• ???????,?????????,??????
• ??BEFORE?AFTER,????????????
• ??????????RFID???,????????
• ???????????????,??,?????
• ?,????A????36?????????B,??
• ????????,????E-mail?????????
• ?RETE??,?????????,???????
• ?????,?????????????,????
• ?RETE??,??????????????????
• ?????

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4?RFID???????

• 4.1 RFID????????
• ???????????????,???????
• ??????????????????(ER)???
• ?,ER??????????,???????,??
• ?????ID?????,ER???????????
• ???????ALE?RFID???,ALE ECReport??
• ??????,???1????ECReport?xml??,
• ?????????????????????
• ECReportSpec?ECSpec??????ECReport????
• ????xml???????????????????
• ?,???????,??????

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4?RFID???????

• 4.2 ????
• ??????????, Drools???Charles Forgys
• RETE??,?????JSR94???????????
• JAVA??,??JAVA?.NET?????(JAVA,
• Groovy,Python)???????????????
• Drools????????,??,??????????
• ???????????,Drools??????????
• ??????????,????????????
• ??????????RETE,?????????
• ???????????,???????,????
• java?OPS5????

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4?RFID???????

• ??????????????????????5??
• ?,?????????,????????????
• ????????????????????(??
• ??,?????????)

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4?RFID???????

• 4.2 ????

???,??????????after???,???? ????????Before?
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5.??
??????????????????????? ?????,?????????????
????? RFID?????,???RFID??????????? ?,????????RETE?
?,????????? ????????????????????,??? ????RFID?????
?