[OASIS Issue Tracker] Commented: (CMIS-529) 2.10.2.1 BNF Grammar vs2.10.2.4.3 CONTAINS() predicate

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    [ http://tools.oasis-open.org/issues/browse/CMIS-529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17129#action_17129 ] 

Al Brown commented on CMIS-529:
-------------------------------

JIRA Cleanup

> 2.10.2.1 BNF Grammar vs 2.10.2.4.3 CONTAINS() predicate 
> --------------------------------------------------------
>
>                 Key: CMIS-529
>                 URL: http://tools.oasis-open.org/issues/browse/CMIS-529
>             Project: OASIS Content Management Interoperability Services (CMIS) TC
>          Issue Type: Bug
>          Components: Domain Model
>            Reporter: Ryan McVeigh
>            Assignee: Ethan Gur-esh
>             Fix For: Committee Draft 04
>
>
> The BNF in these two sections do not agree. 2.10.2.1 requires double-quote characters around <text search expression>, while the BNF in 2.10.2.4.3 does not, although the text of 2.10.2.4.3 requires it:
>     <text search predicate> ::= CONTAINS "(" [ <qualifier> "," ] '"'<text search expression> '"' ")"
>     BNF grammar structure:: CONTAINS ( [ <qualifier> ,] <text search expression> )
>     The <text search expression> parameter MUST be a character string literal in quotes...
> Also, text says "Within a word or phrase, each double quote must also be escaped by a preceding backslash "\". This is confusing. How does this interact with the escaping defined in 2.10.3, as a phrase must be delimited by <quote>, and the entire <text search expression> is in quotes. So what is this:
>     CONTAINS( "word \"my \"phrase\" is \"what\"")
> This could be parsed in a few different ways (some of which are illegal) - it is not possible to tell what in the above is a word containing a quote or a phrase delimited with quotes and containing a quote. Or are you supposed to double-escape the quotes (and escapes) within a <phrase>, so you can parse the difference between which quotes are doing what function? As in:
>     CONTAINS( "word \"my \\\"phrase\\\" is \\\"what\"")

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