Tips on how to write efficient java code for java mapping

hi
I do not have much knowledge in Java
Can anybody tell me some tips on how to write efficient and optimised java code to be used in java mapping
Thanks,
Loveena

hi D'za,
JAVA in xi
A very important place where you will use JAVA in XI is while doing your Mapping. There will be cases when JAVA MAPPING is the best solution to go for. There are 2 types of Parsers available for JAVA Mapping. DOM Parser and SAX parser. Just got through the following links to understand more on Java Mapping and the APIs available.http://java.sun.com/j2se/1.4.2/docs/api/javax/xml/parsers/package-summary.html http://java.sun.com/j2se/1.4.2/docs/api/org/w3c/dom/Document.html http://java.sun.com/j2se/1.4.2/docs/api/org/w3c/dom/package-frame.html /people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-i
/people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-ii /people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-iii
JAVA mapping -
/people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-i /people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-ii /people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-iii /people/ravikumar.allampallam/blog/2005/06/24/convert-any-flat-file-to-any-idoc-java-mapping /people/amol.joshi2/blog/2006/03/10/think-objects-when-creating-java-mappings /people/sameer.shadab/blog/2005/09/29/testing-abap-mapping
sample code for java mapping
Re: Example code DOM PARSER API -
http://java.sun.com/j2se/1.4.2/docs/api/org/w3c/dom/package-frame.html DOM --- /people/thorsten.nordholmsbirk/blog/2006/08/10/using-jaxp-to-both-parse-and-emit-xml-in-xi-java-mapping-programs tutorial sax and dom
For a tutorial on the methods of SAX and DOM http://java.sun.com/webservices/docs/1.1/tutorial/doc/
SAX AND dom PARSER ( BY thorsten) -
example /people/thorsten.nordholmsbirk/blog/2006/08/10/using-jaxp-to-both-parse-and-emit-xml-in-xi-java-mapping-programs java mapping example ( testing and debugging) /people/stefan.grube/blog/2006/10/23/testing-and-debugging-java-mapping-in-developer-studio
regards
biplab
Use a Good Subject Line, One Question Per Posting - Award Points

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          <html>
          <head>
          <title>Index JSP file</title>
          </head>
          <body>
          <font color="red">This is index.jsp file </font>
          </body>
          </html>
          3. Create index.html as below:
          <html>
          <head>
          <title>Index HTML file</title>
          </head>
          <body>
          <font color="red">This is index.html file </font>
          </body>
          </html>
          4. Run the examples server and make sure examplesWebApp is deployed on the examples
          server using the console
          5. Access the URL http://localhost:7001/examplesWebApp
          The page will display a compilation error as below:
          C:\bea\wlserver6.0\config\examples\applications\examplesWebApp\WEB-INF\_tmp_war_examplesServer_examplesServer_examplesWebApp\jsp_servlet\_index.java:89:
          unreachable statement
          out.print("\r\n<html>\r\n<head>\r\n<title>Simple html</title>\r\n</head>\r\n<body>\r\n<font
          color=\"red\">This is index.jsp page</font>\r\n</body>\r\n</html>\r\n");
          ^
          and a look at the generated java code for index.jsp (_index.java) will reveal
          the erroneous code snippet below in the jsp service method:
          try { // error page try block
          //[ /index.jsp; Line: 1]
          response.sendRedirect("index.html"); //[ /index.jsp; Line: 2]
          return; //[ /index.jsp; Line: 3]
          out.print("\r\n<html>\r\n<head>\r\n<title>Simple html</title>\r\n</head>\r\n<body>\r\n<font
          color=\"red\">This is index.jsp page</font>\r\n</body>\r\n</html>\r\n");
          } catch (Exception __ee) {
          while (out != null && out != _originalOut) out = pageContext.popBody();
          pageContext.handlePageException(__ee);
          The above web application works fine in Tomcat 3.2.X environment. The Weblogic
          server 6.0 servlet engine should not generate the "out.println()" corresponding
          to the html section of index.jsp. The moment it sees the "return", it should stop
          processing further.
          Can someone from Weblogic support team please verify this and let me know when
          this bug will be fixed?
          One interesting thing I noticed was when we last tried weblogic 6.0 at its beta
          stage, it worked fine after we put in a special patch jar file called "redirectfix.jar"
          we received from weblogic team but somehow it got re-introduced by the time it
          was released!!
          We are planning to migrate our product from tomcat 3.2.x to weblogic 6.0. Our
          product has a lot of pages with such conditional {response.sendRdirect("page.jsp");return;}
          blocks. We would really appreciate a faster response form weblogic team.
          Thanks in advance.
          sam...
          Sam Palanisamy
          Senior Software Engineer
          Manage.com
          2345 N. First Street First Floor
          San Jose CA 95131


Why should it stop when it sees a return? Is that in the spec?
          Peace,
          Cameron Purdy
          Tangosol Inc.
          << Tangosol Server: How Weblogic applications are customized >>
          << Download now from http://www.tangosol.com/download.jsp >>
          "Sam Palanisamy" <[email protected]> wrote in message
          news:[email protected]...
          >
          > Hi,
          >
          > Here are the steps to reproduce the problem with the examplesWebApp
          application
          > bundled with wlserver6.0(sp2):
          >
          > Product: Weblogic server 6.0 (sp2)
          > Browser: IE 5.0
          >
          > 1. Add index.jsp as the welcome file in WEB-INF/web.xml
          >
          > 2. Create index.jsp as below:
          > <%
          > response.sendRedirect("index.html");
          > return;
          > %>
          > <html>
          > <head>
          > <title>Index JSP file</title>
          > </head>
          > <body>
          > <font color="red">This is index.jsp file </font>
          > </body>
          > </html>
          >
          > 3. Create index.html as below:
          > <html>
          > <head>
          > <title>Index HTML file</title>
          > </head>
          > <body>
          > <font color="red">This is index.html file </font>
          > </body>
          > </html>
          >
          > 4. Run the examples server and make sure examplesWebApp is deployed on the
          examples
          > server using the console
          >
          > 5. Access the URL http://localhost:7001/examplesWebApp
          >
          > The page will display a compilation error as below:
          >
          C:\bea\wlserver6.0\config\examples\applications\examplesWebApp\WEB-INF\_tmp_
          war_examplesServer_examplesServer_examplesWebApp\jsp_servlet\_index.java:89:
          > unreachable statement
          > out.print("\r\n<html>\r\n<head>\r\n<title>Simple
          html</title>\r\n</head>\r\n<body>\r\n<font
          > color=\"red\">This is index.jsp page</font>\r\n</body>\r\n</html>\r\n");
          > ^
          >
          > and a look at the generated java code for index.jsp (_index.java) will
          reveal
          > the erroneous code snippet below in the jsp service method:
          >
          > try { // error page try block
          >
          > //[ /index.jsp; Line: 1]
          > response.sendRedirect("index.html"); //[ /index.jsp; Line: 2]
          > return; //[ /index.jsp; Line: 3]
          > out.print("\r\n<html>\r\n<head>\r\n<title>Simple
          html</title>\r\n</head>\r\n<body>\r\n<font
          > color=\"red\">This is index.jsp page</font>\r\n</body>\r\n</html>\r\n");
          > } catch (Exception __ee) {
          > while (out != null && out != _originalOut) out =
          pageContext.popBody();
          > pageContext.handlePageException(__ee);
          > }
          >
          > The above web application works fine in Tomcat 3.2.X environment. The
          Weblogic
          > server 6.0 servlet engine should not generate the "out.println()"
          corresponding
          > to the html section of index.jsp. The moment it sees the "return", it
          should stop
          > processing further.
          >
          > Can someone from Weblogic support team please verify this and let me know
          when
          > this bug will be fixed?
          >
          > One interesting thing I noticed was when we last tried weblogic 6.0 at its
          beta
          > stage, it worked fine after we put in a special patch jar file called
          "redirectfix.jar"
          > we received from weblogic team but somehow it got re-introduced by the
          time it
          > was released!!
          >
          > We are planning to migrate our product from tomcat 3.2.x to weblogic 6.0.
          Our
          > product has a lot of pages with such conditional
          {response.sendRdirect("page.jsp");return;}
          > blocks. We would really appreciate a faster response form weblogic team.
          >
          > Thanks in advance.
          > sam...
          > Sam Palanisamy
          > Senior Software Engineer
          > Manage.com
          > 2345 N. First Street First Floor
          > San Jose CA 95131
          >
          >

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