學習Oracle Objects的文件和問題記錄

denglt發表於2012-10-12
原文網址 : http://blog.itpub.net/195110/viewspace-746261/
OracleObject
最近在後臺寫些東東用到Oracle Objects的繼承等方面的知識，翻了下Oracle的文件資料．
 
記錄下資料的連結，方便以後查詢：
 
9i:Basic Components of Oracle Objects
 
10g:Basic Components of Oracle Objects
 
 
建議先看9i，感覺9i的目錄結構更加清晰．
 
我碰到的一些問題的解決方法（相信如果你用object type的繼承，也一定會有這些問題 ^-^）：
1.how to invoke overriden methods in a super type
 
2.PLS-00363: expression 'SELF' cannot be used as an assignment target 
摘要：
All methods in an object type accept an instance of that type as their first parameter. The name of this built-in parameter is SELF. Whether declared implicitly or explicitly, SELF is always the first parameter passed to a method.

In member functions, if SELF is not declared, its parameter mode defaults to IN. However, in member procedures, if SELF is not declared, its parameter mode defaults to IN OUT.

來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/195110/viewspace-746261/，如需轉載，請註明出處，否則將追究法律責任。

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