How to access IFS document contents in PL/SQL procedure ?

Question

I am interested in using IFS as a way to load documents
(PDF, HTML, RFT, text...) in an Oracle database table, and
then access the table via a regular application Server.
I understand that the right way to do this is via a Java API
mapped on top of IFS.
But we already have a fairly sophisticated web application using
Java and PL/SQL procedures so that I would ideally need
to write a PL/SQL procedure such as :
function get_document (ifs_file_name in varchar, ifs_file_path in varchar) return clob
For this I need to outline how to query the IFS schema using SQL.
Any idea which table to query ?
Have a nice day

Answer 1

Many thanks to Chris Schneider : it works. Withing a few hours
I was able to make a servlet with a file name as a parameter which sends back
the file contents (in our case its a PDF file).
Here is a sample servlet which uses this access scheme :
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
public class TestIFS extends HttpServlet
* Handle the GET and HEAD methods by building a simple web page.
* HEAD is just like GET, except that the server returns only the
* headers (including content length) not the body we write.
public void doGet (HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
//PrintWriter out;
String title = "Test d'acchs IFS";
// set content type and other response header fields first
response.setContentType("application/pdf");
// then write the data of the response
          ServletOutputStream outbin = response.getOutputStream();
          String theQuery=
     "SELECT "+
     " odm_publicobject.name object_name"+
     ", odmm_contentstore.id content_id"+
     ", odm_format.mimetype"+
     ", odmm_contentstore.globalindexedblob "+
     "FROM odm_publicobject"+
     ", odm_document"+
     ", odm_contentobject"+
     ", odmm_contentstore"+
     ", odm_format "+
     "WHERE odm_publicobject.id = odm_document.id "+
     "AND odm_document.contentobject = odm_contentobject.id "+
     "AND odm_contentobject.content = odmm_contentstore.id "+
     "AND odm_contentobject.format = odm_format.id "+
     "AND odm_publicobject.name = ";
          theQuery += "'" + request.getParameter("fic") + "'";
          try {
               System.out.println("TestIFS debut");
               DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
               Connection conn = DriverManager.getConnection ("jdbc:oracle:oci8:@LXP9","ifssys","ifssys");
               Statement stmt = conn.createStatement ();
               ResultSet rset = stmt.executeQuery (theQuery);
               while (rset.next ()) {
                    byte b[] = new byte[10000000];               
                    b = rset.getBlob(4).getBytes (1,10000000);
                    outbin.write (b);
               rset.close();
               System.out.println("TestIFS fin");
          catch (Exception e) {
(beware mime type is forced to PDF, and file size max 10Mb)