How can I read content from PDF file stored in Oracle 9i XMLDB

Question

Hi Friends:
Now I have met one question that I don`t know how to read some String , for example "Hello", from the PDF file stored in the Oracle 9i XMLDB, I have stored that PDF file into the XMLDB now, any suggestions are appriciated . Thank you in advance.

Answer 1

You may be able to do something with Oracle Text. The following shows how to get an HTML rendiditon of a binary document. I think you can also get plain text instead of HTML
set echo on
spool xfilesUtilties.log
connect sys/&1 as sysdba
grant ctxapp to &2
connect &2/&3
begin
  ctxsys.ctx_ddl.create_policy(policy_name=>'XFILES_HTML_GENERATION', filter=>'ctxsys.auto_filter');
end;
create or replace package xfiles_internal_11010
authid definer
as
  function renderAsHTML(sourceDoc BLOB) return CLOB;
end;
show errors
create or replace package body xfiles_internal_11010
as
function renderAsHTML(sourceDoc BLOB)
return CLOB
as
  html_content CLOB;
begin
  dbms_lob.createTemporary(html_content,true,DBMS_LOB.SESSION);
  ctx_doc.policy_filter(policy_name => 'XFILES_HTML_GENERATION',
                        document => sourceDoc,
                        restab => html_content,
                        plaintext => false);
  return html_content;
end;
end;
show errors
create or replace package xfiles_utilities_11010
authid current_user
as
  HOME_FOLDER   constant varchar2(700) := xdb_constants.HOME_FOLDER;
  PUBLIC_FOLDER constant varchar2(700) := xdb_constants.PUBLIC_FOLDER;
  function renderAsHTML(sourceFile VARCHAR2) return CLOB;
  function transformToHTML(xmldoc XMLType, xslPath VARCHAR2) return CLOB;
end;
show errors
create or replace package body xfiles_utilities_11010
as
function renderAsHTML(sourceFile VARCHAR2)
return CLOB
as
begin
  return xfiles_internal_11010.renderAsHTML(xdburitype(sourceFile).getBLOB());
end;
function transformToHTML(xmldoc XMLType, xslPath VARCHAR2)
return CLOB
as
  html clob;
begin
  select xmldoc.transform(xdburitype(xslPath).getXML()).getClobVal()
    into HTML
    from dual;
  return html;
end;
end;
show errors
grant execute on xfiles_utilities_11010 to public
create or replace public synonym xfiles_utilities for xfiles_utilities_11010
quitMessage was edited by:
mdrake