[hibernate-issues] [Hibernate-JIRA] Created: (HHH-3404) Regular expressions (regex) boolean operator in HQL's where clause: rlike in mysql, regexp_match in informix, ... (regression from hibernate2)

[Geoffrey De Smet (JIRA)]

Regular expressions (regex) boolean operator in HQL's where clause: rlike in mysql, regexp_match in informix, ... (regression from hibernate2)
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                 Key: HHH-3404
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3404
             Project: Hibernate3
          Issue Type: New Feature
          Components: query-hql
    Affects Versions: 3.2.6
            Reporter: Geoffrey De Smet


Hibernate 2 supported the rlike boolean operator (at least for mysql): HB-1034. Hibernate3 currently doesn't.
It turns out that most mainstream databases support regular expression patterns (independently from normal like patterns).

Mysql: rlike
  where a.serial rlike '\d*'

Informix: regexp_match()
  where regexp_match(a.serial, '\d*')

Oracle: REGEXP_LIKE
  where REGEXP_LIKE(a.serial, '\d*')


There have been several forum posts asking about this feature for hibernate3 btw:
http://forum.hibernate.org/viewtopic.php?p=2391395
http://forum.hibernate.org/viewtopic.php?p=2375634
etc

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