Increase in java objects ?

We have 2 different instances of jmap output. We see increase in object like java.lang.string, byte[],java.lang.object, java.util.TreeMap,java.util.Hashamp etc. Is this something to be worrying about? What is the difference shallow and retained heap in each of the instances?

I was mistaken
setScale turned out not to be so magic.
I still need to increase distance between eye position and image plate to be able to view scene objects located at the z=0 or closer.
So I still need to find value of Z-axis translation.
I think frustums should be used, but I never made deals with them.

Similar Messages

How to transform Java object to XMLTYPE ?

hi,
I have a Java object (POJO), that I would like to store to oracle xdb (XMLTYPE table). Is there a way to have something like XmlType.createXML(connection, POJO) or XmlType.createXML(connection, POJO, schema) ?
Currently I transform it as -->
POJO -> DOM-> String -> InputStream -> XMLTYPE.create( connection, Istream )
or
POJO -> DOM-> -> XMLTYPE.create( connection, DOM ) -- which is too slow as xml text size increases above 15kb
2. My JDBC connection is slow. If theres a way to avoid it in XMLType creation, thts even better.
3. Pls suggest other ways of doing this.
Thanks in advance.

you may try some XML binding tool instead of DOM. (e.g. http://xstream.codehaus.org/tutorial.html).
There is no problem generating DOM. Its about generating oracle.xdb.XMLType using java api. Could you show a code snippet that would generate XMLType using xstream or other XML binding tools ?
2) you may use DBMS_XDB.CREATERESOURCE to create a resource from varchar2 or clob parameter.
Could you show a code snippet that inserts into Secure Binary XMLType table using CreateResource ? Im not using schema. Also Varchar supports 32kb. Conversion from Java String XML to CLOB is expensive ( because Oracle uses jdbc connection)

2 TopLink Java Object from Table to be used in single selectOneChoice

Hello everyone, can I ask for help on how to solve my problem....
Here's my scenario, I have 2 tables namely tblCollege and tblCourse, they are related through tblCourse.CollegeCode = tblCollege.Code.
I use the jdeveloper wizard using TopLink -> Java Object from Table to add these table to my project. I created an EJB Data Control so that I can use them to my Userinterface using ADF Faces.
What I really want to do is that I need to have selectOneChoice component displaying:
tblCollege.Name + tblCourse.Name, and it should have a value of tblCollege.Code + tblCourse.Code,
so for example in my
tblCollege:
Code---------Name
1---------------Science
2---------------Music
tblCourse
Code-------Name-----------CollegeCode
1-------------Biology----------1
2-------------Computer-------1
3-------------Guitar------------2
what I want in my selectOneChoice is like this:
value----------display
1-1--------------Science-Biology
1-2--------------Science-Computer
2-3--------------Music-Guitar
I'm a little stuck on how I'm going to that. Thanks.

Bawasi,
I see a couple of angles of attack, but this really depends on the technologies involved. If you are using ADF Bindings in combination with ADF Faces then you need to shape the data at the entity level. If ADF Bindings are no the in equation, you can take a less aggressive approach and shape the data in a managed bean. What is not clear to me is the end-to-end use-case. I see the read-only (i.e. how to get data to the drop box), but I am
not certain what attribute on an entity you are attempting to set. Are you trying to set the course for the current user or for a master schedule? Finally, notice that the final shape of your data set shows a unique combinations, you could increase the performance of your use-case and ease of development simply by denormalizing your schema.
--RiC

32-bit JVM receiving Java objects from 64-bit JVM

Hi folks,
Question is: will there be problems for 32-bit JVM receiving Java objects from 64-bit JVM? and vice versa.
Our application client is running on 32-bit JVM, our server is running on 64-bit JVM. Client will send Java objects to server, and vice versa.
My past experience suggested when sending Java objects between client and server, both client and server needs to be compiled under the same JVM version. Any advice?
Christy

My past experience suggested when sending Java
objects between client and server, both client and
server needs to be compiled under the same JVM
version. Any advice?This is only a case if you omit explicit serialVersionUID. My advice is to ALWAYS specify it for classes you want to serialize over the wire or put into persistent storage. It is way too tricky to rely on default one to fail half a year later when some new programmer adds one new public method to a class.
Unless you need to deserialize already existing resources, there is no need to put any magic number in serialVersionUID - just put 1 for every class you create and possibly increase it by 1 every time you want to make incompatible version (which is not happening so often, as in real world you often try to stay as compatible as possible)

Generation of XML file from Java objects using castor

I have the following java file(Customer.java).
public class Customer
     private String ID;
     private FirstName firstName;
     private MiddleName middleName;
     private LastName lastName;
     private ArrayList address;
     public ArrayList getAddress() {
          return address;
     public void setAddress(ArrayList address) {
          this.address = address;
     public FirstName getFirstName() {
          return firstName;
     public void setFirstName(FirstName firstName) {
          this.firstName = firstName;
     public String getID() {
          return ID;
     public void setID(String id) {
          ID = id;
     public LastName getLastName() {
          return lastName;
     public void setLastName(LastName lastName) {
          this.lastName = lastName;
     public MiddleName getMiddleName() {
          return middleName;
     public void setMiddleName(MiddleName middleName) {
          this.middleName = middleName;
Using castor i have created an xml file(customer.xml) which has the following format.
<?xml version="1.0" encoding="UTF-8" ?>
- <customer ID="fbs0001">
<FIRSTNAME>Fred</FIRSTNAME>
<MIDDLENAME>B</MIDDLENAME>
<LASTNAME>Scerbo</LASTNAME>
- <ADDRESS>
<FIRSTLINE>No 18, Sheshadri road</FIRSTLINE>
<SECONDLINE>Gandhinagar Bangalore</SECONDLINE>
</ADDRESS>
- <ADDRESS>
<FIRSTLINE>ITPL</FIRSTLINE>
<SECONDLINE>Whitefield Bangalore</SECONDLINE>
</ADDRESS>
</customer>
I have used a mapping file to get this output.Is there a way where i can get the output xml in the following format without changing the Java object structure.If yes then please suggest how this can be done.
<?xml version="1.0" encoding="UTF-8" ?>
- <customer ID="fbs0001">
<FIRSTNAME>Fred</FIRSTNAME>
<MIDDLENAME>B</MIDDLENAME>
<LASTNAME>Scerbo</LASTNAME>
</customer>
<ADDRESS>
<FIRSTLINE>No 18, Sheshadri road</FIRSTLINE>
<SECONDLINE>Gandhinagar Bangalore</SECONDLINE>
</ADDRESS>
- <ADDRESS>
<FIRSTLINE>ITPL</FIRSTLINE>
<SECONDLINE>Whitefield Bangalore</SECONDLINE>
</ADDRESS>
I mean the output xml file should have the address as a separate tag not withing the root tag customer.

Hello,
Castor's own discussion groups might be able to point you to the solution you're looking for (if this use case is possible using Castor).
Oracle has its own object-to-XML mapping tool that is part of the TopLink product. It allows you to map existing objects to an existing XML Schema. This can be done visually using the TopLink Workbench, or programmatically using the TopLink APIs. TopLink OXM also supports the JAXB specification.
Using TopLink OXM to get the desired XML result I would recommend the following. Map the Customer and Address classes to XML, but don't map the relationship between Customer and Address. Then make the calls to the marshaller something like the following:
marshaller.marshal(aCustomer, System.out);
for(int x=0; x<aCustomer.getAddress().size(); x++) {
     marshal(aCustomer.getAddress().get(x), System.out);
Example - Using TopLink OXM to map an existing object model to an existing XML Schema:
http://www.oracle.com/technology/products/ias/toplink/preview/10.1.3dp4/howto/ox/index.htm
For more information on TopLink object-to-XML mapping:
http://www.oracle.com/technology/products/ias/toplink/preview/10.1.3dp4/objectxml/index.html
-Blaise

Empty strings when passing a Java object to a Stored Procedure

Hi,
I'm using the interface SQLData to pass Java objects to StoredProcedures. All the object's attributes 'arrive' to the Stored Procedure ok, except the strings, which are empty.
Here is my Oracle object:
TYPE OBJ_ASJFF_OBJ1 IS OBJECT (
ARG1 CHAR(3),
ARG2 NUMBER(4),
ARG3 CHAR(4),
ARG4 NUMBER(7),
ARG5 NUMBER(13,2),
ARG6 CHAR(1));
The nested table of that object:
TYPE TAB_ASJFF_OBJ1 AS TABLE OF OBJ_ASJFF_OBJ1;
The procedure declaration:
PROCEDURE Pup_Instaura_Processo (                              x_crCert IN TAB_ASJFF_OBJ1,
x_cResult OUT CHAR(4)
My SQLData implementation:
public void writeSQL(SQLOutput stream) throws SQLException {
               stream.writeString(getArg1());
               stream.writeInt(getArg2().intValue());
               stream.writeString(getArg3());
               stream.writeLong(getArg4().longValue());
               stream.writeBigDecimal(getArg5());
               stream.writeString(getArg6());
Can anybody help me?
Thanks in advance
Rui Gonçalves

not exactly what you wanted but ingredients can be found at
- JPublisher's docuemntation (especially "Type Mapping Support Through PL/SQL Conversion Functions")
- http://otn.oracle.com/sample_code/tech/java/jsp/Oracle9iJSPSamples.html (Best Hotels PL/SQL Sample )
- http://otn.oracle.com/tech/xml/xdk_sample/xdksample_093001i.html
hope this helps
Kuassi
I have a Java Stored procedure which takes an instance of a different java object as its parameter.
I need to do this from a pl/sql package - can anyone point me to a sample etc (looked on the website but don't see one) ?
Andrew

Problem with XMLEncoder for complex java object i

Hi All.
My problem with XMLEncoder is it doesnt transfrom java objects without default no arguement constructor. I was able to resolve this in my main java object class, by setting a new persistence delegate, but for other classes that are contained in the main class, they are not being encoded.
Thanks in advance for your answers

Better to put this in java forum :-)
Just check, if this helps.
http://forum.java.sun.com/thread.jspa?threadID=379614&messageID=1623434

Compare two Java Objects without Comparable / Comparator

Hi Friends,
I would like to compare two java objects (lots o attributes) without using Comparable / Comparator.
Any suggestion/sample code would be helpful.
Thanks,
Sachin

I suppose you could design another feature to compare Objects... but that would involve a design process, so asking for sample code is definitely premature. And as EJP says, what would be the point?
At least that's what I would answer if this was one of those stupid interview questions.

How to reference multiple instances of the same Java object from PL/SQL?

Dear all,
I'm experimenting with calling Java from PL/SQL.
My simple attempts work, which is calling public static [java] methods through PL/SQL wrappers from SQL (and PL/SQL). (See my example code below).
However it is the limitation of the public static methods that puzzels me.
I would like to do the following:
- from PL/SQL (in essence it needs to become a forms app) create one or more objects in the java realm
- from PL/SQL alter properties of a java object
- from PL/SQL call methods on a java object
However I fail to see how I can create multiple instances of an object and reference one particular object in the java realm through public static methods.
My current solution is the singleton pattern: of said java object I have only 1 copy, so I do not need to know a reference to it.
I can just assume that there will only ever be 1 of said object.
But I should be able to make more then 1 instance of an object.
To make it more specific:
- suppose I have the object car in the java realm
- from PL/SQL I want to create a car in the java realm
- from PL/SQL I need to give it license plates
- I need to start the engine of a scpecific car
However if I want more then 1 car then I need to be able to refrence them. How is this done?
Somehow I need to be able to execute the following in PL/SQL:
DECLARE
vMyCar_Porsche CAR;
vMyCar_Fiat CAR;
BEGIN
vMyCar_Porsche = new CAR();
vMyCar_Fiat = new CAR();
vMyCar_Porsche.setLicensePlates('FAST');
vMyCar_Porsche.startEngine();
vMyCar_Fiat.killEngine();
END;
Thanks in advance.
Best Regards,
Ruben
My current example code is the following:
JAVA:
===
CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED CODAROUL."RMG/BO/RMG_OBJECT" as package RMG.BO;
public class RMG_OBJECT {
private static RMG_OBJECT instance = new RMGOBJECT();
private String rmgObjectNaam;
private RMG_OBJECT(){
this.rmgObjectNaam = "NonDetermined";
public static String GET_RMGOBJECT_NAAM () {
String toestand = null;
if (_instance == null) {toestand = "DOES NOT EXIST";} else { toestand = "EXISTS";};
System.out.println("instance : " + toestand);
System.out.println("object name is : " + _instance.rmgObjectNaam);
return _instance.rmgObjectNaam;
public static Integer SET_RMGOBJECT_NAAM (String IN)
try
_instance.rmgObjectNaam = IN;
return 1;
catch (Exception e)//catch
System.out.println("Other Exception: " + e.toString());
e.printStackTrace();
return 5;
} //catch
PL/SQL Wrapper:
==========
CREATE OR REPLACE FUNCTION CODAROUL.SET_RMGOBJECT_NAAM(NAAM IN VARCHAR2) return NUMBER AS
LANGUAGE JAVA NAME 'RMG.BO.RMG_OBJECT.SET_RMGOBJECT_NAAM (java.lang.String) return java.lang.Integer';
Calling from SQL:
==========
CALL dbms_java.set_output(2000);
select CODAROUL.GET_RMGOBJECT_NAAM() from dual;
Edited by: RubenS_BE on Apr 6, 2012 5:35 AM
Edited by: 925945 on Apr 6, 2012 5:41 AM

You can do this by manually creating a new iterator binding in your binding tab.
So instead of dragging the VO directly to the page, go to the binding tab, add a new executable iterator binding, and point to that one from your ELs in the page itself.

How can I use XStream to persist complicated Java Object to XML & backward

Dear Sir:
I met a problem as demo in my code below when i use XTream to persist my Java Object;
How can I use XStream to persist complicated Java Object to XML & backward??
See
[1] main code
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
public class PhoneList {
     ArrayList<PhoneNumber> phones;
     ArrayList<Person> person;
     private PhoneList myphonelist ;
     private LocationTest location;
     private PhoneList(String name) {
     phones = new ArrayList<PhoneNumber>();
     person = new ArrayList<Person>();
     public ArrayList<PhoneNumber> getphones() {
          return phones;
     public ArrayList<Person> getperson() {
          return person;
     public void addPhoneNumber(PhoneNumber b1) {
          this.phones.add(b1);
     public void removePhoneNumber(PhoneNumber b1) {
          this.phones.remove(b1);
     public void addPerson(Person p1) {
          this.person.add(p1);
     public void removePerson(Person p1) {
          this.person.remove(p1);
     public void BuildList(){
          location = new LocationTest();
          XStream xstream = new XStream();
          myphonelist = new PhoneList("PhoneList");
          Person joe = new Person("Joe, Wallace");
          joe.setPhone(new PhoneNumber(123, "1234-456"));
          joe.setFax(new PhoneNumber(123, "9999-999"));
          Person geo= new Person("George Nixson");
          geo.setPhone(new PhoneNumber(925, "228-9999"));
          geo.getPhone().setLocationTest(location);
          myphonelist.addPerson(joe);
          myphonelist.addPerson(geo);
     public PhoneList(){
          XStream xstream = new XStream();
          BuildList();
          saveStringToFile("C:\\temp\\test\\PhoneList.xml",convertToXML(myphonelist));
     public void saveStringToFile(String fileName, String saveString) {
          BufferedWriter bw = null;
          try {
               bw = new BufferedWriter(
                         new FileWriter(fileName));
               try {
                    bw.write(saveString);
               finally {
                    bw.close();
          catch (IOException ex) {
               ex.printStackTrace();
          //return saved;
     public String getStringFromFile(String fileName) {
          BufferedReader br = null;
          StringBuilder sb = new StringBuilder();
          try {
               br = new BufferedReader(
                         new FileReader(fileName));
               try {
                    String s;
                    while ((s = br.readLine()) != null) {
                         // add linefeed (\n) back since stripped by readline()
                         sb.append(s + "\n");
               finally {
                    br.close();
          catch (Exception ex) {
               ex.printStackTrace();
          return sb.toString();
     public String convertToXML(PhoneList phonelist) {
          XStream xstream = new XStream(new DomDriver());
          xstream.setMode(xstream.ID_REFERENCES) ;
          return xstream.toXML(phonelist);
     public static void main(String[] args) {
          new PhoneList();
}[2].
import java.io.Serializable;
import javax.swing.JFrame;
public class PhoneNumber implements Serializable{
       private      String      phone;
       private      String      fax;
       private      int      code;
       private      String      number;
       private      String      address;
       private      String      school;
       private      LocationTest      location;
       public PhoneNumber(int i, String str) {
            setCode(i);
            setNumber(str);
            address = "4256, Washington DC, USA";
            school = "Washington State University";
     public Object getPerson() {
          return null;
     public void setPhone(String phone) {
          this.phone = phone;
     public String getPhone() {
          return phone;
     public void setFax(String fax) {
          this.fax = fax;
     public String getFax() {
          return fax;
     public void setCode(int code) {
          this.code = code;
     public int getCode() {
          return code;
     public void setNumber(String number) {
          this.number = number;
     public String getNumber() {
          return number;
     public void setLocationTest(LocationTest bd) {
          this.location = bd;
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(location);
        f.getContentPane().add(location.getControls(), "Last");
        f.setSize(400,400);
        f.setLocation(200,200);
        f.setVisible(true);
     public LocationTest getLocationTest() {
          return location;
     }[3].
package test.temp;
import java.io.Serializable;
public class Person implements Serializable{
     private String           fullname;
       @SuppressWarnings("unused")
     private PhoneNumber      phone;
       @SuppressWarnings("unused")
     private PhoneNumber      fax;
     public Person(){
     public Person(String fname){
            fullname=fname;
     public void setPhone(PhoneNumber phoneNumber) {
          phone = phoneNumber;
     public void setFax(PhoneNumber phoneNumber) {
          fax = phoneNumber;
     public PhoneNumber getPhone() {
          return phone ;
     public PhoneNumber getFax() {
          return fax;
    public String getName() {
        return fullname ;
    public void setName(String name) {
        this.fullname      = name;
    public String toString() {
        return getName();
}[4]. LocationTest.java
package test.temp;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
import javax.swing.event.*;
public class LocationTest extends JPanel implements ChangeListener
    Ellipse2D.Double ball;
    Line2D.Double    line;
    JSlider          translate;
    double           lastTheta = 0;
    public void stateChanged(ChangeEvent e)
        JSlider slider = (JSlider)e.getSource();
        String name = slider.getName();
        int value = slider.getValue();
        if(name.equals("rotation"))
            tilt(Math.toRadians(value));
        else if(name.equals("translate"))
            moveBall(value);
        repaint();
    protected void paintComponent(Graphics g)
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        if(ball == null)
            initGeom();
        g2.setPaint(Color.green.darker());
        g2.draw(line);
        g2.setPaint(Color.red);
        g2.fill(ball);
    private void initGeom()
        int w = getWidth();
        int h = getHeight();
        int DIA = 30;
        int padFromEnd = 5;
        line = new Line2D.Double(w/4, h*15/16, w*3/4, h*15/16);
        double x = line.x2 - padFromEnd - DIA;
        double y = line.y2 - DIA;
        ball = new Ellipse2D.Double(x, y, DIA, DIA);
        // update translate slider values
        int max = (int)line.getP1().distance(line.getP2());
        translate.setMaximum(max);
        translate.setValue(max-padFromEnd);
    private void tilt(double theta)
        // rotate line from left end
        Point2D pivot = line.getP1();
        double lineLength = pivot.distance(line.getP2());
        Point2D.Double p2 = new Point2D.Double();
        p2.x = pivot.getX() + lineLength*Math.cos(theta);
        p2.y = pivot.getY() + lineLength*Math.sin(theta);
        line.setLine(pivot, p2);
        // find angle from pivot to ball center relative to line
        // ie, ball center -> pivot -> line end
        double cx = ball.getCenterX();
        double cy = ball.getCenterY();
        double pivotToCenter = pivot.distance(cx, cy);
        // angle of ball to horizon
        double dy = cy - pivot.getY();
        double dx = cx - pivot.getX();
        // relative angle phi = ball_to_horizon - last line_to_horizon
        double phi = Math.atan2(dy, dx) - lastTheta;
        // rotate ball from pivot
        double x = pivot.getX() + pivotToCenter*Math.cos(theta+phi);
        double y = pivot.getY() + pivotToCenter*Math.sin(theta+phi);
        ball.setFrameFromCenter(x, y, x+ball.width/2, y+ball.height/2);
        lastTheta = theta; // save theta for next time
    private void moveBall(int distance)
        Point2D pivot = line.getP1();
        // ball touches line at distance from pivot
        double contactX = pivot.getX() + distance*Math.cos(lastTheta);
        double contactY = pivot.getY() + distance*Math.sin(lastTheta);
        // find new center location of ball
        // angle lambda = lastTheta - 90 degrees (anti-clockwise)
        double lambda = lastTheta - Math.PI/2;
        double x = contactX + (ball.width/2)*Math.cos(lambda);
        double y = contactY + (ball.height/2)*Math.sin(lambda);
        ball.setFrameFromCenter(x, y, x+ball.width/2, y+ball.height/2);
    JPanel getControls()
        JSlider rotate = getSlider("rotation angle", "rotation", -90, 0, 0, 5, 15);
        translate = getSlider("distance from end", "translate", 0, 100, 100,25, 50);
        JPanel panel = new JPanel(new GridLayout(0,1));
        panel.add(rotate);
        panel.add(translate);
        return panel;
    private JSlider getSlider(String title, String name, int min, int max,
                              int value, int minorSpace, int majorSpace)
        JSlider slider = new JSlider(JSlider.HORIZONTAL, min, max, value);
        slider.setBorder(BorderFactory.createTitledBorder(title));
        slider.setName(name);
        slider.setPaintTicks(true);
        slider.setMinorTickSpacing(minorSpace);
        slider.setMajorTickSpacing(majorSpace);
        slider.setPaintLabels(true);
        slider.addChangeListener(this);
        return slider;
}OK, My questions are:
[1]. what I generated XML by XSTream is very complicated, especially for object LocationTest, Can we make it as simple as others such as Person object??
[2]. after I run it, LocationTest will popup and a red ball in a panel will dsiplay, after I change red ball's position, I hope to persist it to xml, then when I read it back, I hope to get same picture, ie, red ball stiil in old position, How to do that??
Thanks a lot!!

Positive feedback? Then please take this in a positive way: if you want to work on persisting Java objects into XML, then GUI programming is irrelevant to that goal. The 1,000 lines of code you posted there appeared to me to have a whole lot of GUI code in it. You should produce a smaller (much smaller) example of what you want to do. Calling the working code from your GUI program should come later.

How can I call a java object from Web dynpro ABAP application?

I made Web dynpro ABAP application and posted it to SAP EP.
For certain business purpose, we need to call external 3rd party java object using 3rd party's java api in Web dynpro application.
Is there anybody who experienced this kind of java interface issue?
I know Web dynpro Java environment can fully support this kind of requirement. but regarding Web dynpro ABAP, I couldn't find any clue for this.
Any comment or suggestion would be greatly appreciated.
Thanks,
Raymond, ABAP Consultant

if you have jco configured, then you can make calls to java api from ABAP .
check out this weblog.
/people/gregor.wolf3/blog/2004/08/26/setup-and-test-sap-java-connector-outbound-connection
Raja

How to insert a java object int derby database

hi,
i have a problem , ie..i want to insert my java object int database derby.and also i need to retrieve that object from database whenever i need. Any body help me to do that in derby...
Thanks

Or you would design a table where the columns of the table correspond to attributes of the object. Then you would make a row by writing out the attributes to the columns they correspond to.

Generating an XML representation of arbitrary Java objects

Hi. Just for fun, I'm attempting to write some code which creates an XML representation of an arbitrary java object using reflection. The idea is that only properties with get/set methods should come through in the XML.
Here is the code:
package com.uhg.aarp.compas.persistence.common.xml;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.w3c.dom.Document;
import org.w3c.dom.DOMException;
import org.w3c.dom.Node;
import java.util.Stack;
public class XMLDAO {
     public static String getXMLWithHeader(Object obj){
          return "<?xml version=\"0\"?>" + getXML(obj);
      * Returns an XML representation of an arbitrary object
     public static String getXML(Object obj){
          StringBuffer buffer = new StringBuffer();
          AccessorMethod[] accessorMethods = getAccessorMethods(obj);
          buffer.append("<" + obj.getClass().getName() + ">\n");
          //List
          if(obj instanceof List){
               List objList = (List)obj;
               Iterator iterator = objList.iterator();
               while(iterator.hasNext()){
                    buffer.append(getXML(iterator.next()));
          else{
               for(int i = 0; i < accessorMethods.length; i++){
                    Object fieldObj = null;
                    try{
                         fieldObj = accessorMethods.invoke();
                         1. Primitive Wrapper or String(base case)
                         if(fieldObj instanceof Integer || fieldObj instanceof Float || fieldObj instanceof Double
                              || fieldObj instanceof Long || fieldObj instanceof String){
                              buffer.append("<" + accessorMethods[i].getAccessorFieldName() + ">");
                              buffer.append(accessorMethods[i].invoke());
                              buffer.append("</" + accessorMethods[i].getAccessorFieldName() + ">\n");
                         else if(fieldObj instanceof Object[]){
                              buffer.append("<" + accessorMethods[i].getAccessorFieldName() + ">\n");
                              Object[] fieldArray = (Object[])fieldObj;
                              for(int j = 0; j < fieldArray.length; j++)
                                   buffer.append(getXML(fieldArray[i]));
                              buffer.append("</" + accessorMethods[i].getAccessorFieldName() + ">\n");
                    }catch(Exception e){
                         System.out.println("Couldn't invoke method: " + accessorMethods[i].getName());
          buffer.append("</" + obj.getClass().getName() + ">\n");
          return buffer.toString();
     * Returns the Object representation for the XML - used to rebuild Java objects
     * converted to XML by XMLDAO.getXML().
     public static Object getObject(String xmlString) throws ParserConfigurationException,
          SAXException, IOException{
          //the root element is the class name
          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
          DocumentBuilder builder = factory.newDocumentBuilder();
          Document document = builder.parse(xmlString);
          Stack objectStack = new Stack();
          return getObject(document);
     private static Object getObject(Node n){
          //every document is either an object or a bean property
          //all bean properties have values
          //no object has a value, it can only have bean properties
          //the base case occurs when the document has a value
          String nodeName = n.getNodeName();
          if(n.getNodeValue() == null){
               System.out.println("node " + nodeName + " is an object");
          else{
               System.out.println("node " + nodeName + " is a bean property");
          return null;
     * Returns all of the "getter" methods for the given object
     private static AccessorMethod[] getAccessorMethods(Object obj){
          Class theClass = obj.getClass();
          Method[] objMethods = theClass.getMethods();
          ArrayList methodList = new ArrayList();
          for(int i = 0; i < objMethods.length; i++){
               try{
                    methodList.add(new AccessorMethod(obj, objMethods[i]));
               }catch(IllegalArgumentException e){}
          return (AccessorMethod[])methodList.toArray(new AccessorMethod[methodList.size()]);
     * Invokes the specified "getter" method and returns the result as an Object
     private Object invokeAccessorMethod(Object obj, Method m) throws IllegalAccessException,
          InvocationTargetException{
          return m.invoke(obj, null);
package com.uhg.aarp.compas.persistence.common.xml;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
* Represents an AccessorMethod (i.e. getField()) on an Object
public class AccessorMethod{
     private Object obj;
     private Method m;
     private String accessorFieldName;
     * Constructor for AccessorMethod
     public AccessorMethod(Object obj, Method m) throws IllegalArgumentException{
          1. Method name starts with get
          2. Method name does not equal get
          3. Method takes no arguments
          4. Method return type is not void
          String methodName = m.getName();
          if(methodName.indexOf("get") != 0 || methodName.length() == 3 &&
               m.getParameterTypes().length != 0 && m.getReturnType() != null){
               throw new IllegalArgumentException("Not a valid getter method " + methodName);
          this.obj = obj;
          this.m = m;
          String tempName = m.getName().substring(3, m.getName().length());
          this.accessorFieldName = Character.toLowerCase(tempName.charAt(0)) + tempName.substring(1, tempName.length());
     public Object invoke() throws IllegalAccessException, InvocationTargetException{
          return m.invoke(obj, null);
     * Gets the m
     * @return Returns a Method
     public Method getM() {
          return m;
     * Sets the m
     * @param m The m to set
     public void setM(Method m) {
          this.m = m;
     * Gets the accessorFieldName
     * @return Returns a String
     public String getAccessorFieldName() {
          return accessorFieldName;
     * Sets the accessorFieldName
     * @param accessorFieldName The accessorFieldName to set
     public void setAccessorFieldName(String accessorFieldName) {
          this.accessorFieldName = accessorFieldName;
     * Gets the obj
     * @return Returns a Object
     public Object getObj() {
          return obj;
     * Sets the obj
     * @param obj The obj to set
     public void setObj(Object obj) {
          this.obj = obj;
     public String getName(){
          return this.m.getName();
I'm having some trouble figuring out how to implement the XMLDAO.getObject(Node n) method. I was thinking of maintaining a Stack of the previous Objects as I traverse the DOM, but I think that might be unnecessary work. Basically I'm wondering how I determine what the last "object" is in the DOM from any given node. Anyone have any input?

I think the end of my post got cut off:
I'm having some trouble figuring out how to implement the XMLDAO.getObject(Node n) method. I was thinking of maintaining a Stack of the previous Objects as I traverse the DOM, but I think that might be unnecessary work. Basically I'm wondering how I determine what the last "object" is in the DOM from any given node. Anyone have any input?

Invoking a AXIS Web Service with a Java object as input argument

Hi
I've been trying to execute a bpel process that invokes a web service deployed through axis.
This web service takes a java object as input argument as opposed to data types that are directly mapped to java types through the SOAP engine.
I deployed and tested the service outside of BPEL using a test client class. Everything works well.
When I try to configure the "Assign" and "Invoke" activities so that service can be invoked, I cannot see the data structure through the variable picker and I see the following message:
"The element {urn:ComplexTypeWebService}TimeSheetBean is not know to the schema container. Perhaps a schema file that uses it needs to include or import its definition.There mat also be an XML schema issue (non resolvable schema) which prevents {urn:ComplexTypeWebService}TimeSheetBean from being seen by the schema processor."
Is there any example that demonstrates how to invoke an axis web service in such scenario? What am I doing wrong?
Please, let me know.

The passing of Java objects in and out of a web service is NOT supported. variables must be xml documents defined by a XML schema. In my opinion, missing Java object and WSDL is not a good idea. -Edwin

Calling Web Service Proxy with Custom java Object as parameter

I created a web service proxy from WSDL URL using JDeveloper 11g(.5 version)
I need to call a webservice method which takes custom Java Object( Ex: ABC.java) as Input parameter. It creates the XSD java (ABC.java) file for that.
@XmlElementRef(name = "abc", namespace = "http://impl.service.ns.test", type = JAXBElement.class)
protected JAXBElement<ABC> abc;
ABC.java has a property of type java.util.Set of a custom Java Object (Set<XYZ.class>)
It doesn't create xsd file for XYZ.java.
@XmlElementRef(name = "XYZ", namespace = "http://model.ns.test/xsd", type = JAXBElement.class)
protected JAXBElement<Set> xyz;
Please help me.

The passing of Java objects in and out of a web service is NOT supported. variables must be xml documents defined by a XML schema. In my opinion, missing Java object and WSDL is not a good idea. -Edwin

Increase in java objects ?

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