[OASIS Issue Tracker] Commented: (CMIS-660) Clarification needed onthe use of quotes in a CONTAINS() query to search on phrases

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    [ http://tools.oasis-open.org/issues/browse/CMIS-660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=20720#action_20720 ] 

Jane Doong commented on CMIS-660:
---------------------------------

I think the scope for this jira issue has expanded greatly. Based on the discussions, the CMIS full text search may need more clarifications on escape characters and how much we want to conform to existing standards.

I would vote for focusing on the original issue, and simply to agree to change phrases to use double quotes, to be more similar to other full text search syntax.



> Clarification needed on the use of quotes in a CONTAINS() query to search on phrases
> ------------------------------------------------------------------------------------
>
>                 Key: CMIS-660
>                 URL: http://tools.oasis-open.org/issues/browse/CMIS-660
>             Project: OASIS Content Management Interoperability Services (CMIS) TC
>          Issue Type: Improvement
>          Components: Domain Model
>    Affects Versions: Draft 0.70
>            Reporter: Jane Doong
>            Assignee: Ethan Gur-esh
>            Priority: Minor
>
> Clarification needed on the use of quotes in a CONTAINS() query to search on phrases.
> Spec:
> 2575  BNF grammar structure:: CONTAINS ( [ <qualifier> ,] ' <text search expression> ' )
> 2413  <phrase> ::= <quote> <word> [ {<space> <word>} ... ] <quote>
> 2422  <quote> ::= "'" !! Single-quote only, consistent with SQL-92 string literal
> 2597  Within a word or phrase, each (single-)quote must also be escaped by a preceding backslash "\"
> The spec specifically states that <quote> is single-quote only.
> My questions is on specifying a phrase inside the CONTAINS(). 
> Since the entire text search expression is enclosed in single quotes, 
> I question whether a phrase should again be enclosed in single quotes, or should it be in double-quotes.
> According to spec:
>  Word search:    CONTAINS('house')
>  Phrase search : CONTAINS(' 'my house' ')
> Should phrases be in double-quotes? ==> CONTAINS(' "my house" ')

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