Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
HBase >> mail # user >> How to use put command in Java for dynamic field name creation


Copy link to this message
-
Re: How to use put command in Java for dynamic field name creation
Hi,
Can someone help on this pls..

regards,
Rams

On Thu, Feb 7, 2013 at 9:19 PM, Ramasubramanian Narayanan <
[EMAIL PROTECTED]> wrote:

> Hi,
>
> I have a requirement to create dynamic field name (based on value of a
> column)  at run time... I think this is the usual approach that we will
> used in HBASE for one to many relationships..
>
> For example, physical table has the following structure
>
>   *Branch Number* *Branch Name* *Supported Currency Code* *Currency Name*
> 1 ABC INR India Rupee  1 ABC USD US Dollar  2 EFG SGD Singapore Dollar  2
> EFG INR India Rupee
> Row key is Branch Number...
>
> To flatten it out, we have to redesign the HBASE table as follows :
>
> The fields related to currency will be grouped and created under a single
> field (supported currency code & currency name) and the field name is
> dynamically created as "CCY"+<actual value for supported currency code>
>
> For the above scenario, the HBASE table will look llike following...
>
>
>   *Branch Number* *Branch Name* *CCY_INR* *CCY_USD* *CCY_SGD*  1 ABC INR|India
> Rupee USD|US Dollar
>  2 EFG INR|India Rupee
> SGD|Singapore Dollar
> Now the question is,
>
> what is the syntax for the put statement in JAVA so that the Column name
> is dynamically created...
>
> put ('branch','1','cf1:'+'CCY'+<valueof currency field>,<value of currency
> field>+<value of currency name field>);
>
> the above sytax is not working for me...
>
> Please let me know the syntax of the put statement in this scenario using
> JAVA...
>
> regards,
> Rams
>