Javascript- Java- DB

Hey all, quick question.
I was looking at using a dynamic tree structure (like the one in http://www.treemenu.com/)
The only problem with this is that I have a massive amount of nodes(many 1000's), so pre-populating the tree would be too time consuming. I was wondering if there was a way to do the following:
- User clicks on a folder to open it
- The folder ID the user clicked on gets sent to a servlet.
- The servlet calls the database, which uses the folderID to get a list of the folders children.
- The database passes the info back to the servlet, which passes it back to the dynamic HTML page.
- The tree opens up with the new info
I know this can be done via applet (I've done this before), but for business reasons, can no longer use an applet. So, I was wondering if doing something like this is possible... Or does each call generate a new page, recreating the existing tree plus the new info.

ok, I made up a quick outline of what I think should be done based on your input.
If anyone knows a better way, feel free to share. If not, then this example will be around for whoever finds this post later on and needs the code.
Master Frame Page
<HTML>
<FRAMESET ROWS="*,0">
<FRAME SRC="frame1.htm" name="fr1" noresize>
<FRAME SRC="frame2.htm" name="fr2" noresize>
</FRAMESET>
</HTML>
Frame 1 Tree Menu
<HTML>
<HEAD>
<script language="JavaScript1.2">
    function callServlet( )
      // when tree is clicked, get nodeID and pass it to getNewNodes() method in "Frame 2 Servlet"
      parent.fr2.getNewNodes( nodeID );
    function updateTree( nodeInfo )
      // Servlet calls this method after the servlet finishes execution
</script>
</HEAD>
<BODY>
// This section contains contains the Tree Code
</BODY>
</HTML>
Frame 2 Servlet (Hidden Frame)
<HTML>
<HEAD>
<script language="JavaScript1.2">
    function callTree( )
      parent.fr1.updateTree( document.newTreeNodes.nodeInfo ); // calls updateTree() method in "Frame 1"
    function getNewNodes( nodeID )
      // submits its form to the servlet, and generates a new
      // page containing the requested tree nodes.
      document.newTreeNodes.nodeID = nodeID;
      document.newTreeNodes.submit();
</script>
</HEAD>
<BODY onLoad="callTree()">
<form name="newTreeNodes" action="/myServlet">
   <input name="nodeID" type="hidden" value="">
   <input name="nodeInfo" type="hidden" value="">
   <input name="Submit" type="Submit" value="Submit" onClick="getNewNodes()">
</form>
</BODY>
</HTML>

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Hi all,
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Everthing looks fine to me from here, you should be able to just call the java function direct such as
document.myAppletObj.doMethod();
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Try adding something else to the name such as "my_client", and see if this works any better.
Chris

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First the main idea of the project. I have a system where I need to use an applet to process an image and display it on a web page.
I have written the applet that does the image processing and it saves the finished image on the users disc. It then uses the showDocument(url) method to pass the URL of the local file to a java script function on the html page.
This is where the problem occurs. Firefox won't display that image and complains about a security error because the remote page is linking to a local file. Interestingly enough IE6 on windows has no issue displaying the generated image.
I really have two questions.
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Thanks! Any suggestions out there will help me.

Assigning javascript variables to java variables in JSP

Does anyone know if it possible to assign a javascript value to a java variable in a javascript function? I want to be able to use the javascript value in a PreparedStatement call, but I can't assign the value of the javascript variable to a java variable. I know the opposite can be done using hidden variables in the form, but I need:
javascript -> java variable in a JSP scriptlet.
Any help would be much appreciated,
Thanks,
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jsp is in the server side.
In order to put html/javascript values (client side) into jsp (server side) it must be submitted.
Try remoting. Using an iframe with a jsp as the source of it and the html target pointing at it.
-------------

Detecting Java Version using Javascript??

Hi,
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So using Javascript i can find if java is enabled like so:
navigator.javaEnabled();
but i want to know what version as well.
I tried:
var version = java.lang.System.getProperty("java.version");
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thanks,
Chris.

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#Fri Sep 28 14:09:24 PDT 2012
deployment.javapi.lifecycle.exception=true
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deployment.security.mixcode=HIDE_RUN
deployment.log=true
deployment.console.startup.mode=SHOW
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deployment.javaws.jre.0.product=1.6.0_33
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deployment.javaws.jre.1.registered=true
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I'm having a similar problem and I think it is related with this.
If, after a Java--->Javascript call, a Javascript--->Java call isn't made soon after the first, it works. But, if the Java--->Javascript call triggers a Javascript--->Java call, any Java--->Javascript call that is made after that doesn't reach Javascript :/
I have a method that handles the Java--->Javascript calls and goes something like this:
System.out.println("Calling Javascript...");
JSObject win = JSObject.getWindow(this);
win.call(jsEventHandler, new Object[] { json.toString() });
System.out.println("Done.");I further found out that, after looking at the Java debug console in the scenario where a Java--->Javascript call triggers a Javascript--->Java call, only after this last method returns is the "Done" message printed, even though the respective Javascript call was already invoked.
Could you explain in more detail the queue based solution you found? Any other ideas?
Regards,
André Tavares.

How to create a class using java script..

Hi all,
Iam new to java script and I tried out the following program but its not working..I basically created a class just like a java prog' but Iam not getting any output or error.Iam attaching the code below.
If I created one function inside the script and create one object its working fine but what should I do when I have a lot of function??so I created a class and put all the function and created an object but its not working..
Do let me know what changes should I do..Iam attaching the code which I had written. or give me an example of how to create a class with couple of functions using JAVASCRIPT
Thanks
Avis_su
<html>
<head><title>JSP Page</title></head>
<body>
<SCRIPT language = "JavaScript">

</script>
</body>
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Run this program to get your answer:
public class AnswerToYourPost {
public static void main(String args[]) {
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* http://kb.mozillazine.org/JavaScript
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I've added to the manifest:
Permissions: all-permissions
Codebase: *
Trusted-Library: true
This removed all of the warning messages from the Control Panel. But I still have a classloader issue when trying to load the first necessary class from my jar. This is new to update 45. To add to the complication, my application uses Eclipse RCP, so the classloading is through OSGi.

This likely won't answer your question, but this update has messed up quite a bit with the way applet security is handled.
There are a laundry list of "known issues" in the release notes and they don't make sense.
For example, I use JavaScript to communicate to my applet and I have several trusted signed jars on it's class path. To permit JavaScript calls, a new parameter "Caller-Allowable-Codebase: http://*.mysite.etc" must be provided. To permit my applet to communicate with other jars I had previously used "Trusted-Library: true", but that setting now displays a false warning. Here's the KNOWN ISSUE from Oracle:
KNOWN ISSUE
Area: Deployment/Plugin
Synopsis: Caller-Allowable-Codebase may be ignored when used with Trusted-Library.
If a trusted, signed JAR file is using the Caller-Allowable-Codebase manifest attribute along with Trusted-Library then the Caller-Allowable-Codebase manifest entry will be ignored and, as a result, a JavaScript -> Java call will show the native LiveConnect warning. The workaround is to remove the Trusted-Library manifest entry.
Next, I generally test my applet by running a sample.html from my desktop. With Java 7 u45, this fails with an InvocationTargetException.
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException ...
Caused by: java.lang.NullPointerException
at sun.plugin2.applet.Plugin2ClassLoader.loadAllowedCodebases(Unknown Source)
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KNOWN ISSUE
Area: Deployment/Plugin
Synopsis: Applet could fail to load by throwing NPE if pack compression is used with deployment caching disabled.
If a JAR file is using pack compression with manifest entries Permissions and Caller-Allowable-Codebase while deployment caching is disabled, then:
The Permissions manifest entry will be ignored. (This can be seen from the fact that yellow warning is there on security dialog even though the Permissions attribute is there.) This only happens if Caller-Allowable-Codebase attribute is present along with the Permissionsattribute.
The Caller-Allowable-Codebase attribute will cause the applet to fail to load by throwing ajava.lang.NullPointerException.
I don't use deployment caching because it started causing problems with Java 7 u21. Adding the cache_jar parameter back in doesn't fix this. But the irony is this exception is only raised with the Trusted Godaddy Certificate and only when being launched from file:/// url. The Self-Signed version actually works (although some dialogs appear, but no NPE). This doesn't make any sense. Furthermore, when the trusted-signed version is launched from http:// it works fine. Should I turn off compression (and why would anyone do this?)
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ADF - MyFaces, HttpUnit testing problem with Javascript.

Dear all
Does anybody know how to test ADF Faces. Any tool would be of interest to me although Opensource and Free Software is prefered?
My task is to write a set of unit tests to test an Oracle ADF and Apache MyFaces application. I have attempted to use both Cactus and HttpUnit. However I am struggling with a simple test case which should simulate a login.
The problem I have is that ADF Faces produces the following dynamic javascript file (I am guessing it is dynamic because I can not find this in either adf-faces-impl-10_1_3_0_4.jar or adf-faces-api-10_1_3_0_4.jar which are the two jars am implementing in my project.):
Common10_1_3_0_4.js
Which when parsed by js.jar (Rhino javascript engine) I get the following error:
com.meterware.httpunit.ScriptException: Event 'submitForm('maincontent:loginForm',1, {source:'maincontent:submit'});return false;' failed: org.mozilla.javascript.EcmaError: TypeError: Cannot call method "split" of undefined at
com.meterware.httpunit.javascript.JavaScript$JavaScriptEngine.handleScriptException (JavaScript.java:202)
(This file Common10_1_3_0_4.js is over 5000 lines long and so I do not want to post it as this posting is already quite long).
Downloading the file directly after it has been built and modifying it and fixing the error by ensuring the split function is called on a strongly typed String variable, then commenting out from the web.xml below I tried the HttpUnit test again.
     <servlet>
          <servlet-name>resources</servlet-name>
          <servlet-class>oracle.adf.view.faces.webapp.ResourceServlet</servlet-class>
     </servlet>
     
This time I get no error, but the original login page simply gets served again.
login.jsp (which is called as login.jsf)
<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles"%>
<%@ taglib uri="http://xmlns.oracle.com/adf/faces/html" prefix="afh"%>
<%@ taglib uri="http://xmlns.oracle.com/adf/faces" prefix="af"%>

<af:objectSeparator />
<af:panelBox text="#{msg['login.info.loginHeader']}" width="100%" background="transparent">
     <af:form id="loginForm">
               <af:objectSpacer height="10px" />
               <af:panelGroup layout="vertical">
                    <af:panelForm labelWidth="5%">
                         
                         <af:panelLabelAndMessage for="username">
                              <af:inputText label="User Name:"
                                   id="username"
                         columns="25"
                         required="yes"
                         secret="false"
                         value="#{userBean.userName}"
                         shortDesc="#{msg['global.user.userName']}" />
                         </af:panelLabelAndMessage>
                         <af:panelLabelAndMessage for="password">
                              <af:inputText label="Password:"
                                   id="password"
                         columns="25"
                         required="yes"
                         secret="true"
                         value="#{userBean.password}"
                         shortDesc="#{msg['global.user.password']}" />
                         </af:panelLabelAndMessage>
               <af:objectSpacer height="10px" />
                    
                    <af:commandButton id="submit"
                              textAndAccessKey="#{msg['global.button.login']}"
                              action="#{userBean.login}" />
                    </af:panelForm>
               </af:panelGroup>
     </af:form>
</af:panelBox>
TestCase LoginTest.java:
package com.siemens.pse.wmstesting;
import java.io.IOException;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import com.meterware.httpunit.GetMethodWebRequest;
import com.meterware.httpunit.WebConversation;
import com.meterware.httpunit.WebForm;
import com.meterware.httpunit.WebLink;
import com.meterware.httpunit.WebRequest;
import com.meterware.httpunit.WebResponse;
public class LoginTest extends TestCase {
     * The URL of the Login page for all login tests
     public static final String URL = new String( "http://localhost/WMS/pages/login.jsf" );
public static void main( String args[] ) {
junit.textui.TestRunner.run( suite() );
public static TestSuite suite() {
return new TestSuite( LoginTest.class );
public LoginTest( String s ) {
super( s );
public void testGetLogin() throws Exception {
     response = new WebConversation( ).getResponse( request );
// Test the result
assertContains( response, "Login Management" );
public void testLoginSuccess() throws Exception {
     response = new WebConversation( ).getResponse( request );
WebForm form = response.getFormWithID( "maincontent:loginForm" );
assertNotNull( "No form found with ID 'maincontent:loginForm'", form );
form.setParameter( "maincontent:username", "admin" );
form.setParameter( "maincontent:password", "pass" );
WebLink submit = response.getLinkWithID("maincontent:submit");
response = submit.click();
System.out.println( response.getText());
// Test the result
assertContains( response, "Welcome to the Temperature Measurement System" );
* Convenience function that asserts that a substring can be found in
* the returned HTTP response body.
* @param theResponse the response from the server side.
* @param s the substring to look for
public void assertContains( WebResponse response, String s ) {
     String target = new String("");
     try {
               target = response.getText(); }
     catch (IOException e) {
          e.printStackTrace(); }
     if ( target.indexOf( s ) < 0 ) {
          // Error showing which string was NOT found
          fail( "Response did not contain the substring: [" + s + "]" );
private WebRequest request = new GetMethodWebRequest( LoginTest.URL );
private WebResponse response;
}

Dear All
Well I found the solution to my testing requirements. HtmlUnit is able to deal with the dynamic Javascript that is generated by the ADF Faces application. The strange part is that HtmlUnit uses the Rhino Javascript engine just as HttpUnit and Cactus, however these two could not deal with the javascript whereas HtmlUnit could.
I include a snippet of a test case that I wrote that now works.
public void testLoginSuccess() throws Exception {
final WebClient webClient = new WebClient( BrowserVersion.INTERNET_EXPLORER_6_0 );
final URL url = new URL("http://localhost/WMS/pages/login.jsf");
final HtmlPage page = (HtmlPage)webClient.getPage(url);
// Get the form that we are dealing with and within that form,
// find the submit button and the field that we want to change.
final HtmlForm form = page.getFormByName("maincontent:loginForm");
final HtmlTextInput usernameField = (HtmlTextInput) form.getInputByName("maincontent:username");
final HtmlPasswordInput passwordField = (HtmlPasswordInput) form.getInputByName("maincontent assword");
final ClickableElement button = (ClickableElement) form.getHtmlElementById("maincontent:submit");
// Change the value of the text field
usernameField.setValueAttribute("admin");
passwordField.setValueAttribute("pass");
// Get the submitted form
final HtmlPage welcomePage = (HtmlPage) button.click();
assertEquals( "Temperature Measurement System", welcomePage.getTitleText() );
}

What're the differences between JSP, Java Script, and Java Applet?

I am confused by the concepts: JSP (Java Server Page), Java Script, and Java Applet? What are their main differences?

I don't know about differences, but one of their main similarities is that each of them has a page in Wikipedia.
JSP
JavaScript
[Java applet|http://en.wikipedia.org/wiki/Java_applet]
There. That should give you enough information.

How to convert pl/sql code into java/j2ee

Hi,
We have a PL/SQL Oracle App server application that we will support if we can convert in j2ee/java. But when i did take a look at the code, these pl/sql contains all HTML and java code inside the stored procedures.
And iam looking to explore some tools and mechanisms that can convert these pl/sql in a JAVA application so that i can deploy this new app into my BEA81 environment.
Does any body has any idea:
a) How to convert from pl/sql > java ?
b) Any plugins or tools of BEA that can run these pl/sql (the way thay are currently...i.e w/o converting) in BEA 81 container ?
thanks, sangita

these pl/sql contains all HTML and java code insideJava or JavaScript. They are not the same. I wouldn't expect to see Java inside html, whereas JavaScript would be intermixed. On the other hand you might have a java stored proc (Oracle 9/10) which is generating HTML.
>
Does any body has any idea:Refactor.
I doubt it just has html and JavaScript/Java. So what you have is a mess that mixes several things that should have been seperate in the first place.

How to return PL/SQL tables to JAVA

Can we return tables from PL/SQL stored procedures to JAVA?
I know that we could use REF CURSOR in PL/SQL, but regarding the performance I heard that its not that good.
This is the PL/SQL code I need to execute. I need to execute this in Java.
package table_type_pkg AS
TYPE t_select_rec_type IS RECORD
( state_id fnd_flex_values.flex_value_id%TYPE
,state_code fnd_flex_values.flex_value%TYPE
,state_desc fnd_flex_values_tl.description%TYPE
TYPE table_type IS table of t_select_rec_type INDEX BY BINARY_INTEGER;
table_type_rec table_type;
empty_table table_type;
-- get_state_details procedure used to get the details of the state
PROCEDURE get_state_details(v_table_type OUT table_type_pkg.table_type);
-- get_records_out procedure to check how the table is intialized in above procedure and what are the values in that table
PROCEDURE get_records_out;
END table_type_pkg;
PACKAGE BODY table_type_pkg AS
PROCEDURE get_state_details(v_table_type OUT table_type_pkg.table_type) AS
CURSOR c_rec IS
SELECT
ffv.flex_value_id
,ffv.flex_value
,fftl.description
FROM
fnd_flex_value_sets ffvs,
fnd_flex_values ffv,
fnd_flex_values_tl fftl
WHERE
ffv.flex_value_set_id= ffvs.flex_value_set_id
AND ffv.flex_value_id=fftl.flex_value_id
AND ffvs.flex_value_set_name = 'BellSouth State';
v_rec_count number:= 1;
v_table_type_recs_out table_type_pkg.table_type;
-- v_emp_rec table_type_pkg.t_select_rec_type%TYPE;
BEGIN
FOR c_get_rec IN c_rec
LOOP
v_table_type_recs_out (v_rec_count) := c_get_rec;
v_rec_count := v_rec_count + 1;
END LOOP;
-- dbms_output.put_line('Last Record of get_records_table is'| |v_table_type_recs_out(v_rec_count
v_table_type := v_table_type_recs_out;
END get_state_details;
PROCEDURE get_records_out IS
v_count_rec NUMBER :=1;
v_table_recs table_type_pkg.table_type;
BEGIN
get_state_details(v_table_recs);
IF v_table_recs.COUNT > 0 THEN
FOR i IN v_table_recs.FIRST .. v_table_recs.LAST
LOOP
DBMS_OUTPUT.PUT_LINE('State id is '| |v_table_recs(i).state_id| |' and State_code is'| |v_table_recs(i).state_code
| |'Description is '| |v_table_recs(i).state_desc);
END LOOP;
END IF;
END get_records_out;
END table_type_pkg;
Thanks,
-Rao Repaka
null

these pl/sql contains all HTML and java code insideJava or JavaScript. They are not the same. I wouldn't expect to see Java inside html, whereas JavaScript would be intermixed. On the other hand you might have a java stored proc (Oracle 9/10) which is generating HTML.
>
Does any body has any idea:Refactor.
I doubt it just has html and JavaScript/Java. So what you have is a mess that mixes several things that should have been seperate in the first place.

Javascript- Java- DB

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