XMLELEMENT

Question

I have the following:
DECLARE
   CURSOR c_xml
   IS
      SELECT XMLELEMENT ("CHECKINOUT"
                        ,xmlattributes (property_id AS "PROPERTY"
                                       ,msgid AS "ID"
                                       ,status AS "STATUS"
                                       ,lead_name AS "OCCUPANT"
                                       ,email AS "email"
                                       ,unit_ext AS "EXTENSION"
                                       ,folio_id AS "FOLIO")) AS tosend
      FROM   TABLE (pm_pbx_systems.checkinout ('PHR'));
  TYPE records IS TABLE OF c_xml%rowtype;
  charges        records;
  v_content     varchar2(32000);
BEGIN
open c_xml;
fetch c_xml bulk collect into charges;
close c_xml;
dbms_output.put_line(charges(1).tosend);
for i in charges.first .. charges.last loop
v_content := v_content||charges(i).tosend;
end loop;
end;
When I try to access charges(1).tosend I get
[Error] Execution (25: 1): ORA-06550: line 24, column 1:
PLS-00306: wrong number or types of arguments in call to 'PUT_LINE'
ORA-06550: line 24, column 1:
PL/SQL: Statement ignored
ORA-06550: line 25, column 14:
PLS-00306: wrong number or types of arguments in call to '||'
ORA-06550: line 25, column 1:
PL/SQL: Statement ignored
How do I access this information? I want to create an object that can be used to send via UTL_HTTP.write_text ( r         => v_req, DATA => v_content );
Any help would be appreciated.
Thank you

Answer 1

XMLElement returns an XMLType data type.  DBMS_OUTPUT has no clue how to handle that data type.  In order for DBMS_OUTPUT to be able to do what you want, you would need something like
DECLARE
   CURSOR c_xml
   IS
      SELECT XMLELEMENT ("CHECKINOUT"
                        ,xmlattributes ('1' AS "PROPERTY"
                                       ,'2' AS "ID"
                                       ,'3' AS "STATUS"
                                       ,'4' AS "OCCUPANT"
                                       ,'5' AS "email"
                                       ,'6' AS "EXTENSION"
                                       ,'7' AS "FOLIO")) AS tosend
      FROM   dual;
  TYPE records IS TABLE OF c_xml%rowtype;
  charges        records;
  v_content     varchar2(32000);
BEGIN
   open c_xml;
   fetch c_xml bulk collect into charges;
   close c_xml;
   dbms_output.put_line(charges(1).tosend.getStringVal());
   for i in charges.first .. charges.last loop
      v_content := v_content||charges(i).tosend.getStringVal();
   end loop;
end;
I used .getStringVal() to convert the XMLType into a VARCHAR2 value.  That works for up to 4k worth of data.  There is also a .getClobVal().  Depending upon your version, you could wrap an XMLSerialize around the XMLElement and use XMLSerialize to convert the XMLType into VARCHAR2 instead of using .getStringVal().  That would be the preferred method.
Can you use XMLAgg in your query against the DB?  Not sure what your final v_content needs to look like so just throwing out options.