[ http://issues.apache.org/jira/browse/TUSCANY-663?page=all ]
ant elder updated TUSCANY-663:
------------------------------
Fix Version/s: Cpp-current
> XPATH doesnt support dots in names (treats them as indices)
> -----------------------------------------------------------
>
> Key: TUSCANY-663
> URL: http://issues.apache.org/jira/browse/TUSCANY-663
> Project: Tuscany
> Issue Type: Bug
> Components: C++ SDO
> Affects Versions: Cpp-current
> Reporter: Ed Slattery
> Fix For: Cpp-current
>
>
> The XPATH subset from the specification uses NCname for names, so in theory
> "www.xxx.yyy.zzz is a vaild name, which may either be a field called
> "www.xxx.yyy.zzz" or a many valued
> field called "www.xxx.yyy" at offset "zzz"
> The C++ implementation restricts this and assumes all [] or "." are indices.
> Fix this by parsing the XPATH token, then checking if the token is a valid
> property name for the object, then
> if not, looking for the last "." or "[" to see if theres an index.
> Heres the details of the grammar...
> path ::= (scheme ':')? '/'? (step '/')* step
> scheme ::= [^:]
> step ::= '@'? property
> | property '[' index_from_1 ']'
> | property '.' index_from_0
> | reference '[' attribute '=' value ']'
> | ".."
> property ::= NCName ;; may be simple or complex type
> attribute ::= NCName ;; must be simple type
> reference :: NCName ;; must be DataObject type
> index_from_0 ::= Digits
> index_from_1 ::= NotZero (Digits)?
> value ::= Literal
> | Number
> | Boolean
> Literal ::= '"' [^"]* '"'
> | "'" [^']* "'"
> Number ::= Digits ('.' Digits?)?
> | '.' Digits
> Boolean ::= true
> | false
> NotZero ::= [1-9]
> Digits ::= [0-9]+
> ;; leading '/' begins at the root
> ;; ".." is the containing DataObject, using containment properties
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