del.so

berkeley db 4.6.21的源码。berkeley db是一个简单的数据库管理系统

m4_comment([$Id: del.so,v 1.11 2004/09/28 14:13:09 bostic Exp $])

define(BDB_LOC, ..)

m4_ref_title(Upgrading m4_db Applications,
    Release 4.2: DB-__GT__del,,
    upgrade.4.2/client, upgrade.4.2/priority)

m4_p([dnl
In previous releases, the C++ m4_refcxx(dbh_del) and Java Db.delete
methods threw exceptions encapsulating the m4_ref(DB_KEYEMPTY) error in
some cases when called on Queue and Recno databases.  Unfortunately,
this was undocumented behavior.])

m4_p([dnl
For consistency with the other m4_db methods that handle
m4_ref(DB_KEYEMPTY), this is no longer the case.  Applications calling
the m4_refcxx(dbh_del) or Db.delete methods on Queue or Recno databases,
and handling the m4_ref(DB_KEYEMPTY) exception specially, should be
modified to check for a return value of m4_ref(DB_KEYEMPTY) instead.])

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