Help with registering multiple XML versions with Oracle 9i

Question

Hello,
I have a fundamental question. Probably someone had been in similar situation and thought of the best way to handle.
Our product has about 15 versions that we need to support.
Each version publishes its 'xmlschema' and is slightly different from the previous version.
Now if I register each schema version with oracle9i it will auto-create tables for each version (even for xml elements/attributes that are same across different versions).
2 options that we thought of so far to handle this is
-Combine all 15 versions schema's into 1 super-set schema and register with oracle db. Fields/elements, a version does not use will be empty
-Use XML 'extensions' in various xml schema, such that each version in 'extended' from the previous one and keeps on adding its additions attributes/elements. My question is then if I register these 15 'extended' schemas with oracle, will it create common DB tables per version or it will still create unique tables for all 15 versions.
Anyone has any better suggestions or comments to handle this situation ?
thanx
-Manu

Answer 1

But I'm still stuck on the problem. It still doesn't read the second object. There is no second object.
The code is quite big, any specific portion would be helpful, please let me know?This is a minimal load and print for an XML bean:import java.io.*;
import java.beans.*;
import java.util.*;
public class LoadAndPrintXMLBean {
  // run with your file name as first argument
  public static void main (String[] args) {
    try {
      XMLDecoder d = new XMLDecoder(
        new BufferedInputStream(
          new FileInputStream(args[0])));
      Object result = d.readObject();
      d.close();
      System.out.println(result);
    } catch (Exception ex) {
      ex.printStackTrace();
}For your input, it prints[[INDEX_KEY], [7]]You have one object, a vector, containing two vectors:
  The first child vector contains the string "INDEX_KEY".
  The second child vector contains the string "7".
This matches the structure of your XML<?xml version="1.0" encoding="UTF-8"?>
<java version="1.4.1_01" class="java.beans.XMLDecoder">
  <object class="java.util.Vector">
    <void method="add">
      <object class="java.util.Vector">
        <void method="add">
          <string>INDEX_KEY</string>
        </void>
      </object>
    </void>
    <void method="add">
      <object class="java.util.Vector">
        <void method="add">
          <string>7</string>
        </void>
      </object>
    </void>
  </object>
</java>There is only one object there to retrieve using readObject().
Pete