[XSQL 1000]Debugging for xsql:insert

Question

Dear Colleagues,
Looks to me as the awareness upon the usefulness of XSQL servlet for posting FORM submissions has raised recently, and thus the need for even more documentation and examples as currently provided for the specific task.
I have successfully used the OracleXMLSave class for posting in the database of XML data, however I had difficulties in achieving the same for an FORM post.
I have consulted the following sources:
- release notes for version 1.0.0.0(S.Muench)
- example code (xsql/demo/document)(S.Muench)
- Oracle XML handbook (ISBN: 007212489X)
- XML forum in technet discussion groups.
Nevertheless, I could not find explicitly reported on how to simply see what the internal format of the XML was for a specific form submission that I was developing.
The workaround I made for the topic is to include in the xsql file which does the posting, an href which references an xsl which then should extract the content as the spec says it is formatted and then returns it ot the browser for visual inspection.
Nevertheless, would there be a better solution (to see what the Servlet has generated before submitting for insertion) it would be great to know.
Looking forward your comments
and very many compliments to Oracle and to Steve Muench (and colleagues) for the really useful and powerful system they have developed.
Regards
Sincerely
Luca

Answer 1

Dear Colleagues,
following the instructions from Steve as in his posting of January 10th in support to the topic "Generating XML from HTML form", I have just written an action handler that "does the job" of showing the XML that the servlet has internally generated (or at least I believe so) before doing the internal OracleXMLSave call.
I attach hereafter the code as well as what I have done to get it to work and will appreciate feedback .
OS Linux (Suse 6.3)
HTTPD Apache 1.3.9 (off-the shelf from Suse 6.3) made on Nov 13,1999
SERVLET Tomcat 3.1
JAVA jdk1.2.2
ORACLE 8.1.6 (also called 8iR2)
1) save the appended document in "GetPostedDocument.java"
2) compile the java code
I have done this with the jdk1.2.2 on Linux, installed under /usr/lib/jdk1.2.2, and after coyping all the jar distributed in the xsql servlet 1.0.0.0 to the local compiling directory
/usr/lib/jdk1.2.2/bin/javac -classpath "/usr/lib/jdk1.2.2/lib/classes.zip:xmlparserv2.jar:.:oraclexsql.jar:oraclexmlsql.jar:servlet.jar" GetPostedDocument.java
3) copied GetPostedDocument.class to the tomcat lib location, and made sure it had the right permissions, namely to /usr/local/httpd/jakarta-tomcat/lib as a+rx
4) stopped and started the httpd + servlet
In my setting (that is the default I believe for tomcat 3.1), any file placed in the tomcat's lib directory is automatically loaded on startup in the CLASSPATH
rcapache stop
rcapache start
5) added to the xsql page handling the post,
the following xsql action handler
<xsql:action handler="GetPostedDocument"/>
6) reloaded the calling xsql page
What happens now is that upon submission I get back XML code which has been submitted ... exactely what I wanted. Perhaps is not what everybody needs, but it is already for me a starting step to proceed with debugging of my XSL to understand why the feeding into Oracle did not work (clearly the fault of the reformatting XSL which did not generate OracleXMLSave "canonical format").
Thankyou and Compliments, Steve, for such a beatiful package ! It is REALLY USEFUL.
Luca
-------------------GetPostedDocument.java----
import oracle.xml.xsql.*;
import org.w3c.dom.*;
import javax.servlet.http.*;
import javax.servlet.*;
import java.sql.*;
import java.util.*;
import java.net.URL;
import java.io.PrintWriter;
public class GetPostedDocument extends XSQLActionHandlerImpl {
public void handleAction (Node rootNode) throws SQLException {
try {
org.w3c.dom.Document converted= ((XSQLServletPageRequest)getPageRequest()).ge
tPostedDocument();
URL pageURL = new URL("file:///root/bingo.xsql");
XSQLRequest req= new XSQLRequest(pageURL);
req.setPostedDocument(converted);
req.process(new PrintWriter(System.out),new PrintWriter(System.err));
catch (Exception exs) {
this.reportError(rootNode,exs.getMessage());
exs.printStackTrace();
public void init(XSQLPageRequest xsqlreq, Element element) {
super.init(xsqlreq,element);
}