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djosyula
PostPosted: Thu Apr 27, 2017 6:16 am    Post subject: ESQL coding for sorting of data from XML input Reply with quote

Newbie

Joined: 30 Mar 2017
Posts: 9

Hi Experts , Is there any way in ESQL coding for sorting of data from XML file.Thanks in advance

input :
<LIST>
<EMP>
<EMP_ID>4</EMP_ID>
</EMP>
<EMP>
<EMP_ID>3</EMP_ID>
</EMP>
<EMP>
<EMP_ID>1</EMP_ID>
</EMP>
<EMP>
<EMP_ID>2</EMP_ID>
</EMP>
</LIST>

Expecting output :

<LIST>
<EMP>
<EMP_ID>1</EMP_ID>
</EMP>
<EMP>
<EMP_ID>2</EMP_ID>
</EMP>
<EMP>
<EMP_ID>3</EMP_ID>
</EMP>
<EMP>
<EMP_ID>4</EMP_ID>
</EMP>
</LIST>
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mpong
PostPosted: Thu Apr 27, 2017 8:25 pm    Post subject: Reply with quote

Disciple

Joined: 22 Jan 2010
Posts: 164

What did you try so far ?
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timber
PostPosted: Fri Apr 28, 2017 1:18 am    Post subject: Reply with quote

Grand Master

Joined: 25 Aug 2015
Posts: 1280

Use the Search button and search for the word 'sorting'.
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djosyula
PostPosted: Wed May 03, 2017 5:56 am    Post subject: sorting in esql is done Reply with quote

Newbie

Joined: 30 Mar 2017
Posts: 9

Here is code for sorting in ESQL

DECLARE SIZE INTEGER CARDINALITY(InputRoot.XMLNSC.LIST.*[]);
DECLARE rOutRef REFERENCE TO OutputRoot.XMLNSC;
DECLARE I,J INTEGER 1;
DECLARE A ,TEMP_F,TEMP_S,TEMP_SWITCH INTEGER;
SET OutputRoot.XMLNSC.aj.ARRAY[]=InputRoot.XMLNSC.LIST.EMP[];

WHILE J<=SIZE-1 DO
WHILE SIZE >I DO
SET TEMP_F=OutputRoot.XMLNSC.aj.ARRAY[I].EMP_ID;
SET TEMP_S=OutputRoot.XMLNSC.aj.ARRAY[I+1].EMP_ID;
IF TEMP_F>TEMP_S THEN
SET TEMP_SWITCH=OutputRoot.XMLNSC.aj.ARRAY[I].EMP_ID;
SET OutputRoot.XMLNSC.aj.ARRAY[I].EMP_ID=OutputRoot.XMLNSC.aj.ARRAY[I+1].EMP_ID;
SET OutputRoot.XMLNSC.aj.ARRAY[I+1].EMP_ID=TEMP_SWITCH;
END IF;

--SET A = SELECT MIN(t.EMP_ID) from OutputRoot.XMLNSC.aj.ARRAY[] as t;
--SET OutputRoot.XMLNSC.aj.ARRAY[A]=NULL;
SET I =I+1;
END WHILE;
SET J=J+1;
SET I=1;
END WHILE;
RETURN TRUE;
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timber
PostPosted: Wed May 03, 2017 7:29 am    Post subject: Reply with quote

Grand Master

Joined: 25 Aug 2015
Posts: 1280

If you post code, please use code tags.

I would not recommend doing the sorting using ESQL; Java is likely to be a lot faster and you don't have to write the sorting algorithm yourself ( although you do need to do some work to understand how Java collection classes work ).
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