Calling a java function

can anyone tell me
how can i call a java function that access musql database while i change my combobox entries.
i want to populate my 2nd combo based on the selection in first combo.For that i want to query the database with the first combo selection.

//// hi below code does your work
// still if u have any doubts, you are respectively invited mail me.
//bye
<html>
<body>
     <form name="getdata.jsp" action="post">
          Step1 :<select name="s1">
                    <OPTION VALUE="DEFAULT">Select</option>
                    <option value="In">India</option>
                    <option value="USn">United States of America</option>
               </select>
          Step1 :<%
               try
                    if(!request.getParameter("s1").toString().equals("DEFAULT"))
                         // do some stuff here to get the relateddata from the database
                         //for example, i'm assuming objRs is the recordset
                         %>
                              <select name="s2">
                              <%
                                   out.println("<option value="+objRs.getString(1)+">"+objRs.getString(2));
                              %>
                              </select>
                         <%
               }catch(Exception ex)
               %>
     </form>
</body>
</html>

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Calling a java function from xquery

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I'm pretty new to ODSI and xquery, so forgive me if what I'm asking is too trivial, but I need to find a way to call a java function from inside xquery. I know xquery can do this through external functions, but can't find any example on how the query prolog declaration should be, nor how the function should look like. Could someone enlighten me?
Thanks,
Pedro Ivo

You can do this 2 ways that I know of (Mike probably has more ideas too)
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[How to use an inversion function|http://download.oracle.com/docs/cd/E13167_01/aldsp/docs32/dsp32wiki/Using%20Inverse%20Functions%20to%20Improve%20Query%20Performance.html]
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Edited by: jhoffmanme on Apr 14, 2010 9:57 AM

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Type Mismatch error while calling a Java Function from Visual Basic 6.0...

Hi,
I'm having a problem in calling the Java Applet's Function from Visual Basic. First, I'm getting the handle of the Java Applet and components of it using "Document.Applets(n)" which is a HTML function. I'm calling this function from Visual Basic. My code is something like this...
' // Web1 is IE Browser in my Form.
Dim Ap,Comp
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I'm using Visual Basic 6.0, Windows 2000 , J2SDK 1.4.2_05.
Please help me Friends.
Thanks and Regards,
Srinivas Annam.

Hi
I am not sure about this solution. try this
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Post ur reply in this forum.
bye for now
sat

Calling a Java Function from PL/SQL

Hi,
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PACKAGE "COMPANY" AS
type emp_rec is record (empno number, ename varchar2(10));
type emp_list is varray(5) of emp_rec;
type factory is record (
name varchar(10),
emps emp_list
function get_factory(p_name varchar) return factory;
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How to call this Java function?

Hi
I imported the following java function in oracle forms 10g Rel. 2:
PACKAGE BODY WorkDocumentWsStub IS
-- DO NOT EDIT THIS FILE - it is machine generated!
args   JNI.ARGLIST;
-- Constructor for signature (Ljava/lang/String;)V
FUNCTION new(
    a0    VARCHAR2) RETURN ORA_JAVA.JOBJECT IS
BEGIN
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END;
-- Constructor for signature (Lorg/apache/axis2/context/ConfigurationContext;Ljava/lang/String;)V
FUNCTION new(
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    a1    VARCHAR2) RETURN ORA_JAVA.JOBJECT IS
BEGIN
    args := JNI.CREATE_ARG_LIST(2);
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END;
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FUNCTION new RETURN ORA_JAVA.JOBJECT IS
BEGIN
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END;
-- Method: searchDocuments (Lch/mv/wox/WorkDocumentWsStub$SearchDocuments;)Lch/mv/wox/WorkDocumentWsStub$SearchDocumentsResponse;
FUNCTION searchDocuments(
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    a0    ORA_JAVA.JOBJECT) RETURN ORA_JAVA.JOBJECT IS
BEGIN
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DECLARE
raisedException      ora_java.jobject;
jo           ora_java.jobject;
jo1          ora_java.jobject;
arr           ora_java.jarray;
BEGIN
message('1');
jo := WorkDocumentWsStub.new;
message('2');
arr := WorkDocumentWsStub.searchDocuments(jo,jo1);
message('3');
EXCEPTION
--check for ORA-105100
WHEN ORA_JAVA.JAVA_ERROR THEN
    :test.msg := 'Unable to call out to Java, ' ||ORA_JAVA.LAST_ERROR;
--check for ORA-105101
WHEN ORA_JAVA.EXCEPTION_THROWN THEN
    raisedException := exception_.new(ORA_JAVA.LAST_EXCEPTION);
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      :test.msg := 'Exception: '||Exception_.toString(raisedException);
    EXCEPTION
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        :test.msg := 'Unable to call out to Java, ' ||ORA_JAVA.LAST_ERROR;
    END;
END;The trigger allways raised with the following exception: Exception: java.lang.Exception: java.lang.NullPointerException
Thanks for any help in advance!
Niels

I would suggest putting the calls to WorkDocumentWsStub.new and WorkDocumentWsStub.searchDocuments(jo,jo1) in separate exception blocks so you know which one generates the nullpointerexception.
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Is it possible to call a java function from plsql?

I have a plsql script which loads data in to a table. One of the fields is a notes field. I would like to use advance offerings of java to manipulate the data before inserting. Is there away I can pass the data to a java function and have it return the manipulated data?
Thanks
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You can use java stored procedure to call java function from plsql.
1. Create a java class with a static function(which will be called from plsql).
2. Compile and load the class into database using LOADJAVA command.
3. Create a wrapper stored procedure or function in plsql which calls the above java function.
4. Access this plsql procedure like normal database procedure. This will invoke underlying java function in which you can do all the processing and return result.
Refer this url for help on implementing above steps :
http://otn.oracle.com/tech/java/jsp/pdf/developing_o8i_apps_with_plsql_and_java_twp.pdf
Samples on java stored procedure :
http://otn.oracle.com/sample_code/tech/java/jsp/oracle9ijsp.html
Chandar

How to call external java functions in XSLT Mapping Programs

Hi All,
I am unable to call java programs in XSLT MAPPING.
I tried by following the blog...but getting error :
XSLT Mapping With JAVA Enhancement ( For Beginners)
I need some input from you all.
Waiting For quick reply.
Rgds Somu.

i wrote the code...
and getting error in interface mapping..
<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:MyLib="java:datetime.DateandTime">
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                              <xsl:value-of select="concat('IDOC',//EDI_DC40/DOCNUM)"/>
                         </DocumentIdentifier>
                    </RequestingDocumentIdentifier>
                    <RequestingDocumentDateTime>
                         <DateTime DateTimeQualifier="On">
                                        <xsl:if test="function-available('MyLib:getDateValue')">
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</xsl:if>
                                    </DateTime>
                    </RequestingDocumentDateTime>
                    <From>
                         <PartnerInformation>
                               <PartnerName>BASF SA</PartnerName>
                                <PartnerIdentifier Agency="AssignedByBASF">
                                 <xsl:value-of select="//E1EDK14[QUALF='014']/ORGID"/>
                                </PartnerIdentifier>
                         </PartnerInformation>
                    </From>
                    <To>
                    <PartnerInformation>
                         <PartnerName>BASF CORP CHEM DIV</PartnerName>
                         <PartnerIdentifier Agency="D-U-N-S">001307032</PartnerIdentifier>
                    </PartnerInformation>
               </To>
               </Header>
          </Order>
     </xsl:template>
</xsl:stylesheet>

How can i call userdefined java functions in a JSP ?

Hi,
i want to define some functions in a java class. is it possible to use these functions in a jsp ? how can i achieve this ?

I suggest you call the function you want in either a custom tag or in the servlets/struts/jsf,... classes you are using.
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My page has a button that, when clicked, calls a Java function that sets a PageLegend and changes an image but then FireFox reloads the page switching everything back to original values. What's up?

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A good place to ask questions and advice about web development is at the mozillaZine Web Development/Standards Evangelism forum.
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How to call a java function that is in page header from a process in page.

Hi,
Generally we call plsql process from a javascript in the header of that page.
But i want the other way around.
Is it possible or is it a completely wrong idea.
I am thinking so because we are able to call javascripts from items and buttons why cant we do so from a process.
Thanks and Regards,

943323 wrote:
Hi,
Generally we call plsql process from a javascript in the header of that page.
But i want the other way around.
Is it possible or is it a completely wrong idea.
I am thinking so because we are able to call javascripts from items and buttons why cant we do so from a process.It's a "completely wrong idea". Processes and PL/SQL run in the database on the server. JavaScript runs in the browser on the client. For basuic security reasons the browser must make requests to the server, not the other way round.
Please update your forum profile with a real handle instead of "943323".

Problem while calling java function from html

when i tried to call a java function from html i'm getting an error
object don't support this property.
what could be the reason.
This is my html.
I got this from this forum only.
My applet is accessing the system property "user.home".
I ran it in IE
<DIV id="dvObjectHolder">Applet comes here</DIV>
<br><br>
<script>
if(window.navigator.appName.toLowerCase().indexOf("netscape")!=-1){ // set object for Netscape:
     document.getElementById('dvObjectHolder').innerHTML = " <object ID='appletTest1' classid=\"java:test.class\"" +
"height=\"0\" width=\"0\" onError=\"changeObject();\"" +
          ">" +
"<param name=\"mayscript\" value=\"Y\">" +
"<param name=\"archive\" value=\"sTest.jar\">" +
"</object>";
}else if(window.navigator.appName.toLowerCase().indexOf('internet explorer')!=-1){ //set object for IE
     document.getElementById('dvObjectHolder').innerHTML = "<object ID='appletTest1' classid=\"clsid:8AD9C840-044E-11D1-B3E9-00805F499D93\"" +
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          " <param name=\"code\" value=\"test.class\" />" +
     "<param name=\"archive\" value=\"sTest.jar\">" +
          " </object>"
</script>
<LABEL id="lblOutputText">This text will be replaced by the applet</LABEL>
<BR>
<input value="Javascript to java" type=button onClick="document.appletTest1.fromJavaScript()">

I tried this example using the repy given to an earlier post.
But its not working with me.
What i did in addition was adding plugin.jar to classpath to import netscape.javascript.*;
Let me add some more details
1) I'll add the stack trace
2) my java progrma
3) batch file to sign the applet.
1) This is the stack trace i don't know whether u will undertand this
load: class test.class not found.
java.lang.ClassNotFoundException: test.class
     at sun.applet.AppletClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadCode(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.io.FileNotFoundException: C:\FastranJava\AppletObject\bin\test\class.class (The system cannot find the path specified)
     at java.io.FileInputStream.open(Native Method)
     at java.io.FileInputStream.<init>(Unknown Source)
     at java.io.FileInputStream.<init>(Unknown Source)
     at sun.net.www.protocol.file.FileURLConnection.connect(Unknown Source)
     at sun.net.www.protocol.file.FileURLConnection.getInputStream(Unknown Source)
     at sun.applet.AppletClassLoader.getBytes(Unknown Source)
     at sun.applet.AppletClassLoader.access$100(Unknown Source)
     at sun.applet.AppletClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     ... 10 more
Exception in thread "Thread-5" java.lang.NullPointerException
     at sun.plugin.util.GrayBoxPainter.showLoadingError(Unknown Source)
     at sun.plugin.AppletViewer.showAppletException(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
2) Java Program
import netscape.javascript.*;
import java.applet.*;
public class test extends Applet
     private JSObject win;
     private JSObject outputLabel;
     private boolean buttonFromJavaClicked=false;
     checkJavaScriptEvent evt=new checkJavaScriptEvent();
     public void init()
          try
               evt.start();
               win=JSObject.getWindow(this);
               outputLabel=(JSObject)win.eval("document.getElementById('lblOutputText')");
               outputLabel.setMember("innerHTML", "<center><h1>From Init<br>Your Home directory" + System.getProperty("user.home") + "</h1></center>");
          catch(Exception e)
               e.printStackTrace();
     public void fromJavaScript()
          buttonFromJavaClicked=true;
     public void fromJavaScript2()
          System.out.println("Started Form JavaScript2");
          try
               String strLbl="<center><h1>From JavaScript<br>Your Homedir:" + System.getProperty("user.home") + "</h1></center>";
               outputLabel.setMember("innerHTML", strLbl);
          catch(Exception e)
               e.printStackTrace();
     class checkJavaScriptEvent extends Thread
          public void run()
               while(true)
                    if(test.this.buttonFromJavaClicked)
                         System.out.println("OK buttonfromjava is true");
                         test.this.buttonFromJavaClicked=false;
                         fromJavaScript2();
                    try
                         Thread.sleep(3000);
                    catch(Exception e)
                         e.printStackTrace();
3) Batch file
del *.cer
del *.com
del *.jar
del *.class
javac -classpath ".;C:\Program Files\Java\jre1.5.0_06\lib\plugin.jar" test.java
keytool -genkey -keystore harm.com -keyalg rsa -dname "CN=Harm Meijer, OU=Technology, O=org, L=Amsterdam, ST=, C=NL" -alias harm -validity 3600 -keypass password -storepass password
jar cf0 test.jar *.class
jarsigner -keystore harm.com -storepass password -keypass password -signedjar sTest.jar test.jar harm
del *.class

Can we call java function in java script????

hello
please tell me can i call a java function through java script function in jsp???

of course not. JavaScript is interpreted by the client (web browser) while the Java code in a JSP resides on the server. don't confuse the web application's architecture.
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How to call java function from PL/sql in oracle applications

I am trying to call a java function from plsql procedure. Can any one explain how to call java function, and in which directory I have to store my java function in oracle applications. Do I need to register that java function from Application developer.
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Kranthi

http://www.oracle.com/technology/tech/java/jsp/index.html
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Calling a java function

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