hadoop-hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HIVE-1027) Create UDFs for XPath expression evaluation
Date Thu, 07 Jan 2010 00:56:54 GMT

     [ https://issues.apache.org/jira/browse/HIVE-1027?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Namit Jain reassigned HIVE-1027:
--------------------------------

    Assignee: Patrick Angeles

> Create UDFs for XPath expression evaluation
> -------------------------------------------
>
>                 Key: HIVE-1027
>                 URL: https://issues.apache.org/jira/browse/HIVE-1027
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Patrick Angeles
>            Assignee: Patrick Angeles
>            Priority: Minor
>         Attachments: hive-1027.patch, udf_xpath.patch
>
>
> Create UDFs for evaluating XPath expressions against XML documents.
> Examples:
> > SELECT xpath_double ('<a><b class="odd">1</b><b class="even">2</b><b
class="odd">4</b><c>8</c></a>', 'sum(a/b[@class="odd"])') FROM
src LIMIT 1 ;
> 5.0
> > SELECT xpath_string ('<a><b>b1</b><b>b2</b></a>',
'a/b[2]') FROM src LIMIT 1 ;
> b2
> > SELECT xpath ('<a><b>b1</b><b>b2</b><b>b3</b><c>c1</c><c>c2</c></a>',
'a/c/text()') FROM src LIMIT 1 ;
> ["c1","c2"]
> Included functions are: xpath_short, xpath_int, xpath_long, xpath_float, xpath_double/xpath_number,
xpath_string, xpath

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message