Update ora/xml_util_pkg.pkb to fix #27

[datRedHeadedGuy]

Modified the xml_util_pkg and changed the use of XMLType.extract(xpath).getStringVal() to EXTRACTVALUE(XMLType, xpath) so that special characters are not escaped.

[mortenbra]

Hesitant to approve this, as the EXTRACTVALUE function has been deprecated since at least Oracle 11.2 (see https://docs.oracle.com/cd/E11882_01/server.112/e41084/functions061.htm#SQLRF06173 ).

Can you describe the problem in more detail?

[eaolson]

Example:

declare
    x xmltype;
    ex varchar2(100);
begin
    x := xmltype ('<root><foo bar="three &amp; four">one &amp; two</foo></root>');
    ex := xml_util_pkg.extract_value( x, '/root/foo/text()' );
    dbms_output.put_line( ex );
    ex := xml_util_pkg.extract_value( x, '/root/foo/@bar' );
    dbms_output.put_line( ex );
end;

Returns:

one & two
three & four

Wouldn't the expected result have the & unescaped to just "&"? Would calling dbms_xmlgen.convert() be a better solution?

[datRedHeadedGuy]

I removed my changes where I replaced XMLType.extract(xpath).getStringVal() with the EXTRACTVALUE function and just pass the string value into a new function, get_unescaped_string(), before returning it.

[datRedHeadedGuy]

resolves #27