Updating XQuery with WLST

Question

Hi,
I'm new to Weblogic. Need a little help with this.
I have two separate applications : 1 which does the dynamic invocation callout (application A) and the other serving as the xquery repository (application B).Application A does a dynamic transformation using a uri pointing to a xq file on application B, Application A seems to cache the xq file. If I update the xq file on application B, the only way Application A will pick up the changes is to redeploy application A (i.e. crudely flush it's cache). Is there any way I can update the XQuery file using WLST?
Thanx

Answer 1

As I am not able to use IF-ELSE in Oracle for select statementsHow about a CASE statement?
If each query is always meant to return a single aggregated column (and of course only one row), then you can use this :
SELECT CASE WHEN param_1 IN ('VAL1', 'VAL2')
             THEN (
               SELECT ...
               FROM emptable, XMLTable( ... )
            WHEN param_1 IN ('VAL3', 'VAL4')
             THEN (
               SELECT ...
               FROM addresstable, XMLTable( ... )
        END AS Orders
FROM dual;If you prefer the UNION approach, then :
Here, if the Param.1 is "NAME" then the outcomes as <Rowset></Rowset> + Output of other query (which only thing I want)That's because of the XMLAgg aggregate function.
An aggregate function without GROUP BY always returns one row, even though there's no row in the original result set.
SQL> SELECT XMLElement("Rowset", XMLAgg(rw.column_value))
  2  FROM emptable ul
  3     , XMLTable('/Rowsets/Rowset/Row' passing ul.text) as rw
  4  WHERE 1 = 0
  5  ;
XMLELEMENT("ROWSET",XMLAGG(RW.
<Rowset></Rowset>
You can group by an empty list of column to force the required behaviour :
SQL> SELECT XMLElement("Rowset", XMLAgg(rw.column_value))
  2  FROM emptable ul
  3     , XMLTable('/Rowsets/Rowset/Row' passing ul.text) as rw
  4  WHERE 1 = 0
  5  GROUP BY ()
  6  ;
XMLELEMENT("ROWSET",XMLAGG(RW.
You should also use UNION ALL instead of UNION so that Oracle doesn't bother performing any unneeded sort operation.
What is the purpose of RTRIM in your examples? I don't see any reason to call it over an XMLType instance, furthermore it performs an implicit datatype conversion to VARCHAR2 which can potentially cause errors.
If you need to serialize the resulting XMLType column then use the appropriate methods getStringVal(), getClobVal() or XMLSerialize function (11g).
Edited by: odie_63 on 7 nov. 2012 23:24