XMLType.extract cannot display French special characters in the select statement

Hello
E characters (acute e) get distorted when they are retrieved from the
XMLType column of an ordinary table.

How can we solve correctly get the characters e (acute e)?

We tried setting 'setenv NLS_LANG French_France.WE8ISO8859P1' and
"setenv NLS_LANG French_France.WE8DEC" before loading the table.

Database version:
SQL> select * from v$version;

BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - Production
PL/SQL Release 11.2.0.2.0 - Production
CORE    11.2.0.2.0      Production
TNS for Linux: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production
The test sample case is as follows:
--connect to any schema where you can store XMLType
set long 2000;
set pagesize 2000;
set serveroutput on;
--delete from test;
drop table test;
create table test (id number, xmldata XMLType);


declare
featureDescriptorXML  CLOB;
xml_type XMLType;
new_xml_type XMLType;
myName varchar2(100);
myName2 varchar2(100);
myName3 varchar2(100);
stmt varchar2(4000);
begin
 featureDescriptorXML :=
 '<?xml version="1.0" encoding="UTF-8"?>' ||
 '<abc:TheFeature xmlns:' || 'de' || '="' || 'http://abc.klmno.org/fghde' || '" xmlns:abc="http://www.ghijklmn.net/abc"' ||
 ' xmlns:xyz="http://www.ghijklmn.net/xyz">' ||
 '<abc:Name>de:MyGénérique</abc:Name>' ||
 '</abc:TheFeature>';
 xml_type := xmltype(featureDescriptorXML);
 myName := xml_type.extract('/abc:TheFeature/abc:Name/text()', 'xmlns:abc="http://www.ghijklmn.net/abc"').getStringVal();
 dbms_output.put_line('abc:Name value stored in VARCHAR2 variable from XMLType variable is ' || myName);
 -- can show French chars

 insert into test(id, xmldata) values(20, xml_type);

 stmt := 'select t.xmldata.extract(''/abc:TheFeature/abc:Name/text()'', ''xmlns:abc="http://www.ghijklmn.net/abc"'').getStringVal() from test t';
 execute immediate stmt into myName2;
 dbms_output.put_line('abc:Name value stored in VARCHAR2 variable from XMLType column in 2nd version is ' || myName2);
 -- cannot show French chars


 stmt := 'select  t.xmldata from test t';
 execute immediate stmt into new_xml_type;
 myName3 := new_xml_type.extract('/abc:TheFeature/abc:Name/text()', 'xmlns:abc="http://www.ghijklmn.net/abc"').getStringVal();
 dbms_output.put_line('abc:Name value stored in VARCHAR2 variable from first XMLType column and then from XMLType variable in 3rd version is ' || myName3);
 -- cannot show French chars

end;
/

select t.xmldata.extract('/abc:TheFeature/abc:Name/text()', 'xmlns:abc="http://www.ghijklmn.net/abc"').getStringVal()
from test t;
-- Cannot show French chars


select t.xmldata.extract('/abc:TheFeature/abc:Name/text()', 'xmlns:abc="http://www.ghijklmn.net/abc"').getStringVal() "myname"
from test t;
-- Cannot show French chars


select t.xmldata.getCLOBVal() from test t;
-- Cannot show French chars


select t.xmldata from test t;
-- Can show French chars
Output is the following with setenv NLS_LANG French_France.WE8ISO8859P1
and NLS_DATABASE_PARAMETERS are the following:
SQL> select * from nls_database_parameters;

PARAMETER                      VALUE
------------------------------ ----------------------------------------
NLS_LANGUAGE                   AMERICAN
NLS_TERRITORY                  AMERICA
NLS_CURRENCY                   $
NLS_ISO_CURRENCY               AMERICA
NLS_NUMERIC_CHARACTERS         .,
NLS_CHARACTERSET               WE8DEC
NLS_CALENDAR                   GREGORIAN
NLS_DATE_FORMAT                DD-MON-RR
NLS_DATE_LANGUAGE              AMERICAN
NLS_SORT                       BINARY
NLS_TIME_FORMAT                HH.MI.SSXFF AM

PARAMETER                      VALUE
------------------------------ ----------------------------------------
NLS_TIMESTAMP_FORMAT           DD-MON-RR HH.MI.SSXFF AM
NLS_TIME_TZ_FORMAT             HH.MI.SSXFF AM TZR
NLS_TIMESTAMP_TZ_FORMAT        DD-MON-RR HH.MI.SSXFF AM TZR
NLS_DUAL_CURRENCY              $
NLS_COMP                       BINARY
NLS_LENGTH_SEMANTICS           BYTE
NLS_NCHAR_CONV_EXCP            FALSE
NLS_NCHAR_CHARACTERSET         AL16UTF16
NLS_RDBMS_VERSION              11.2.0.2.0

20 ligne(s) sélectionnée(s).
Table creé.

abc:Name value stored in VARCHAR2 variable from XMLType variable is
de:MyGénérique
abc:Name value stored in VARCHAR2 variable from XMLType column in 2nd version is
de:MyGénérique
abc:Name value stored in VARCHAR2 variable from first XMLType column and then
from XMLType variable in 3rd version is de:MyGénérique

Procdure PL/SQL terminée avec succès.


T.XMLDATA.EXTRACT('/ABC:THEFEATURE/ABC:NAME/TEXT()','XMLNS:ABC="HTTP://WWW.GHIJK
--------------------------------------------------------------------------------
de:MyGénérique


myname
--------------------------------------------------------------------------------
de:MyGénérique


T.XMLDATA.GETCLOBVAL()
--------------------------------------------------------------------------------
<?xml version="1.0" encoding="DEC-MCS"?>
<abc:TheFeature xmlns:de="http://abc.klmno.org/fghde" xmlns:abc="http://www.ghij
klmn.net/abc" xmlns:xyz="http://www.ghijklmn.net/xyz">
  <abc:Name>de:MyGénérique</abc:Name>
</abc:TheFeature>



XMLDATA
--------------------------------------------------------------------------------
<?xml version="1.0" encoding="ISO-8859-1"?>
<abc:TheFeature xmlns:de="http://abc.klmno.org/fghde" xmlns:abc="http://www.ghij
klmn.net/abc" xmlns:xyz="http://www.ghijklmn.net/xyz">
  <abc:Name>de:MyGénérique</abc:Name>
</abc:TheFeature>
We also tried affecting NLS_CHARACTERSET AL32UTF8
by CHARACTER SET of ALTER DATABASE.
the database is closed and restarted.
But that did not help.

Thank you

Ok. Wasn't sure. Thank you for that clarification.

.. .but please make an attempt with XMLTABLE XMLQUERY, XMLCAST (or CAST) and other XML functions that support XQuery and not to use the engine of 'old '... I hope that these features will keep things as it should...

.. .If not... create an SR with support of Oracle on this issue. Changes, if you base your SR on these 'old' operators XML/SQL and functions that are her will not be able to help, mainly due to the fact that your last version and stuff like EXTRACT / getStringVal() etc. are announced officially discouraged in this 11.2.0.2.0 version. As far as I know the t.xmldata.extract, the xml_type.extract and the other syntaxes, outlaw count of 10.1 (although I know, he appealed to java / OO people kind).

Published by: Marco Gralike April 5, 2011 19:50

Tags: Database

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