[jira] [Work started] (VXQUERY-215) The left operand in the PairConstructor must support ExprSingle

["Riyafa Abdul Hameed (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/VXQUERY-215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on VXQUERY-215 started by Riyafa Abdul Hameed.
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> The left operand in the PairConstructor must support ExprSingle
> ---------------------------------------------------------------
>
>                 Key: VXQUERY-215
>                 URL: https://issues.apache.org/jira/browse/VXQUERY-215
>             Project: VXQuery
>          Issue Type: Bug
>            Reporter: Riyafa Abdul Hameed
>            Assignee: Riyafa Abdul Hameed
>
> According to JSONiq grammar specification the left operand of the PairConstructor needs to be ExprSingle [1]. Current implementation considers it to be a StringLiteral.
> Following needs to be implemented:
> *Change the grammar specification of the PairConstructor
> *The string should be the result of evaluating the left operand: atomizing it, checking that it results in a single atomic item, and casting it to xs:string. 
> *Errors such as jerr:JNTY0004 or err:XPTY0004 may be raised upon failure of one of these steps. 
> [1]http://jsoniq.org/docs/JSONiqExtensionToXQuery/html-single/index.html#section-grammar-summary



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