Java Arrays to XML

I am having some problems getting the XML structure I want for Arrays.
Let's say I want an array that looks like this in xml:
<Operation>
<Element2>data1</Element2>
<Element2>data2</Element2>
</Operation>
I would have thought I could the jws operation as the following:
/* jws:operation
public String Operation (String[] Element2) {
return "result";
Instead WLW creates the following XML:
<Operation xmlns="http://www.openuri.org/">
<Element>
<String>
Value_s
</String>
<String>
Value_s
</String>
</Element>
</Operation>
How do I get WLW to create the XML I want above?

Dave,
You are right, that is the way to get the desired output. Sorry for the
delayed response.
Do let us know if you have any further queries/inputs.
Regards,
Anurag
Workshop Support
"Dave Remy" <[email protected]> wrote in message
news:[email protected]..
I haven't tried this yet but I got an email from a smart WLW developer I
know so it would probably work. It requires an XML map that looks like
this:
<Operation xmlns="http://www.openuri.org/">
<Element2 xm:multiple="s in Element2">{s}</Element2>
</Operation>
Method is:
public String Operation(String[] Element2)
"Dave Remy" <[email protected]> wrote in message
news:[email protected]..
I am having some problems getting the XML structure I want for Arrays.
Let's say I want an array that looks like this in xml:
<Operation>
<Element2>data1</Element2>
<Element2>data2</Element2>
</Operation>
I would have thought I could the jws operation as the following:
/* jws:operation
public String Operation (String[] Element2) {
return "result";
Instead WLW creates the following XML:
<Operation xmlns="http://www.openuri.org/">
<Element>
<String>
Value_s
</String>
<String>
Value_s
</String>
</Element>
</Operation>
How do I get WLW to create the XML I want above?

Similar Messages

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.

Java DOM Parser (XML)

Could someone please give me a link where I can find a example of a DOM parser, w3c. That shows how to parse an xml string or file and build the tree then access parts of it? I cant find a basic example anywhere!

Check this
http://java.sun.com/xml/jaxp/dist/1.1/docs/tutorial/dom/1_read.html

Java Mapping Using JAXB [Java Arch for XML Binding]

Hi All,
Anyone tried using JAXB [Java Architecture for XML Binding API available with Java WebServices Pack] technique for XML processing in Java Mapping??
I am facing the following problems..
1. I am not able to generate namespace while marshalling target XML [In standalone mode and not tried in XI].
2. What are the jar files we need to import?
I tried importing the following jar files in XI.
jaxb-api.jar,jaxb-impl.jar,jaxb-libs.jar,jax-qname.jar,namespace.jar,relaxngDatatype.jar
and getting some errors while importing these files in XI.
3. It throws error at runtime [Interface Mapping-Test Tab]
like Resource not found:javax/xml/bind/Messages_en.properties,javax/xml/bind/Messages_en_US.properties
4. Even after creating a copy of available file Messages.Properties with name: Messages_en.properties and Messages_en_US.properties.. it is not generating any messages in Target message tab
Thanks in Advance,
Ananth Chinnaraj

Sravya ,
I have searched wide and far for this, but no success.
A lot on JAXB XI and Webdynpro, but nothing on JAXB, XI and mappings.
Could you please post the url here ?
Thanks and kind regards,
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Mapping Java Arrays

I was given an object model generated by an apache product, Axis. The generated java files use the Java Array in the following fashion:
Class Zoo {
private ArrayOfAnimals animals;
// â¦ public get/set methods cut
Class ArrayOfAnimals {
private Animal animals[];
// â¦ public get/set methods cut
Class Animal {
private String name;
// â¦ public get/set methods cut
I was tasked with mapping the one-to-many relationship between zoo and an array of animals using the Animal array. I canât find a mapping in TopLink to do this type of association. I am NOT allowed to modify the generated source code. I may be able to extend the generated classes, and perhaps provide a different superclass.
I am allowed to create the relational model for these domain classes. Can anyone help with this type of mapping?
Thanks

TopLink does not directly support arrays as the mapping type for a collection, only collection types that support the Collection and Map interfaces.
In general it seems odd to use an array instead of a Java collection which would be much more efficient (in terms of adding and removing) and much more functional. I would definitely suggest changing the generated code, or the way the code is generated if at all possible.
The easiest way to map the array in TopLink would be the use get/set methods for the 1-m mapping on the Zoo class that converted the array to/from a Collection.
i.e. something like,
public List getAnimalsList() {
return new Arrays.asList(animals.animals);
public void setAnimalsList(List list) {
animals.animals = (Animal[]) list.toArray();
In general TopLink uses its ContainerPolicy class to handle collections. It may also be possible (but advanced) to write a custom container policy for your 1-m mapping that handles arrays.

Mapping java classes to XML files

Hi Friends !!
Please I need your help.
Does somebody out there know any framework or API that helps me to map Java classes to XML files.
Something like:
public class Test {
    public int x;
    public int y;
    public int sum(){}
}to something like:
<?xml version="1.0" encoding="UTF-8"?>
<class>
<className>Test</className>
bla
bla
bla
</class>
Any tips?
Thanks in advance
Cleverson

JAXB will create classes from an XML schema, SAX is a parser library and JAXP is a library of XML a bunch of XML tools.
I don't care for JAXB too much. I would skip it and go right to the JAX-RPC spec (WebServices).

How to map array to XML

Hi
i am making a Advance data grid with hierarichal data source.its working fine but now i need to use xml instead of that array.i tried alot but can not manage to conver that array to xml.so please convert that so that i can use that in my advance data grid without much change in code.
private var masterData:Array = [
{ TableName:"RatingDeductible",
children:[
{CompanyKey:1, StateCode:"ALL", LOBKey:1, ExpiryDate:2010-12-12, PerClaimALAEWithinLimitFactor:1.000, PerClaimALAEOutsideLimitFactor:1.100,AggregateALAEWithinLimitFactor:1.050,AggregateALAEOu tsideLimitFactor:1.150,Deductible:1000,IdentifierKey:1},
{CompanyKey:1, StateCode:"ALL", LOBKey:1, ExpiryDate:2010-12-12, PerClaimALAEWithinLimitFactor:1.000, PerClaimALAEOutsideLimitFactor:1.100,AggregateALAEWithinLimitFactor:1.050,AggregateALAEOu tsideLimitFactor:1.150,Deductible:1000,IdentifierKey:1},
{CompanyKey:1, StateCode:"ALL", LOBKey:1, ExpiryDate:2010-12-12, PerClaimALAEWithinLimitFactor:1.000, PerClaimALAEOutsideLimitFactor:1.100,AggregateALAEWithinLimitFactor:1.050,AggregateALAEOu tsideLimitFactor:1.150,Deductible:1000,IdentifierKey:1},
Waiting fo reply
Thanks and Regards
Vineet Osho

I do not think this is a complex XML structure. All that you need to take care is about the contexts. How ever it is not possible to give u the complete mapping here. If you have tried mapping already and facing some issues.. please put it here.. so that some one can help you.
VJ

[JNI Beginner] GC of Java arrays returned by the native code

Hello all,
I am beginning with JNI, to integrate a C library that pilots an industrial equipment, into a java UI. This library enables to exchange various proprietary PDUs (protocol data units), with the equipment, up and down (request/replies). Both requests and replies are arrays of bytes (+char*+).
"Request" byte arrays are constructed by Java code, which passes them to the JNI code that glues with the lib. "Reply" byte arrays are returned to the Java code, which analyzes them.
The "return reply" part is very similar to this [tutorial example|http://java.sun.com/developer/onlineTraining/Programming/JDCBook/jniexamp.html] , which returns bytes read from a file. However there's something I don't understand with regard to garbage collection of the returned byte array:
- in this stock example, the C code creates a Java byte array fills it, and simply returns it (example code stripped to highlight only the parts relevant to my question):
    jByteArray=(*env)->NewByteArray(env, size);
    (*env)->SetByteArrayRegion(env, jByteArray, 0, size, (jbyte *)sourceBytes);
    return (jByteArray);What will happen to this Java array (jByteArray) with regard to garbage collection?
- if it's no more referenced (the example Java code just systemouts it and forgets it), will it be eligible to GC?
- if it is referenced by a Java variable (in my case, I plan to keep a reference to several replies as the business logic requires to analyze several of them together), do regular Java language GC rules apply, and prevent eligibility of the array to GC as long as it's referenced?
That may sound obvious, but what mixes me up is that the same tutorial describes memory issues in subsequent chapters: spécifically, the section on "passing arrays states that:
[in the example] the array is returned to the calling Java language method, which in turn, garbage collects the reference to the array when it is no longer usedThis seems to answer "yes" to both my questions above :o) But it goes on:
The array can be explicitly freed with the following call:
{code} (*env)-> ReleaseByteArrayElements(env, jByteArray, (jbyte *)sourceBytes, 0);{code}Under what circumstances would one need to explicitly free jByteArray when it's about to be returned to the Java calling method? Or does this sentence apply to completely different situations (such as, when the array is +not+ returned as is to a Java method)?
The tutorial's next section has a much-expected +memory issues+ paragraph, from which I quote:
By default, JNI uses local references when creating objects inside a native method. This means when the method returns, the references are eligible to be garbage collected.I assume this means, +unless the references are assigned, in the Java code, to a Java variable+, right?
If you want an object to persist across native method calls, use a global reference instead. A global reference is created from a local reference by calling NewGlobalReference on the the local reference.I assume this enables the C code to maintain a global reference to a java object even if it's not referenced anymore from the Java variables, right?
I also checked the [JNI specification|http://download-llnw.oracle.com/javase/6/docs/technotes/guides/jni/spec/design.html#wp1242] , but this didn't clear the doubt completely:
*Global and Local References*
The JNI divides object references used by the native code into two categories: local and global references. Local references are valid for the duration of a native method call, and are automatically freed after the native method returns. Global references remain valid until they are explicitly freed.
Objects are passed to native methods as local references. All Java objects returned by JNI functions are local references. The JNI allows the programmer to create global references from local references. JNI functions that expect Java objects accept both global and local references. A native method may return a local or global reference to the VM as its resultAgain I assume the intent is that Global references are meant for objects that have to survive across native calls, regardless of whether they are referenced by Java code. But what worries me is that combining both sentences end up in +All Java objects returned by JNI functions are local references (...) and are automatically freed after the native method returns.+.
Could you clarify how to make sure that my Java byte arrays, be they allocated in C code, behave consistently with a Java array allocated in Java code (I'm familiar already with GC of "regular" Java objects)?
Thanks in advance, and best regards,
J.

jduprez wrote:
Hello all,
I am beginning with JNI, to integrate a C library that pilots an industrial equipment, into a java UI. This library enables to exchange various proprietary PDUs (protocol data units), with the equipment, up and down (request/replies). Both requests and replies are arrays of bytes (+char*+).
"Request" byte arrays are constructed by Java code, which passes them to the JNI code that glues with the lib. "Reply" byte arrays are returned to the Java code, which analyzes them.
The "return reply" part is very similar to this [tutorial example|http://java.sun.com/developer/onlineTraining/Programming/JDCBook/jniexamp.html] , which returns bytes read from a file. However there's something I don't understand with regard to garbage collection of the returned byte array:
- in this stock example, the C code creates a Java byte array fills it, and simply returns it (example code stripped to highlight only the parts relevant to my question):
    jByteArray=(*env)->NewByteArray(env, size);
(*env)->SetByteArrayRegion(env, jByteArray, 0, size, (jbyte *)sourceBytes);
return (jByteArray);What will happen to this Java array (jByteArray) with regard to garbage collection?It will be collected when it is no longer referenced.
The fact that you created it in jni doesn't change that.
The array can be explicitly freed with the following call:
(*env)-> ReleaseByteArrayElements(env, jByteArray, (jbyte *)sourceBytes, 0);Under what circumstances would one need to explicitly free jByteArray when it's about to be returned to the Java calling method? Or does this sentence apply to completely different situations (such as, when the array is not returned as is to a Java method)?
Per what the tutorial says it is either poorly worded or just wrong.
An array which has been properly initialized it a just a java object. Thus it can be freed like any other object.
Per your original question that does not concern you because you return it.
In terms of why you need to explicitly free local references.
[http://download-llnw.oracle.com/javase/6/docs/technotes/guides/jni/spec/design.html#wp16785]
The tutorial's next section has a much-expected memory issues paragraph, from which I quote:
By default, JNI uses local references when creating objects inside a native method. This means when the method returns, the references are eligible to be garbage collected.I assume this means, unless the references are assigned, in the Java code, to a Java variable, right?As stated it is not precise.
The created objects are tracked by the VM. When they are eligible to be collected they are.
If you create a local reference and do NOTHING that creates an active reference elsewhere then when the executing thread returns to the VM then the local references are eligible to be collected.
>
If you want an object to persist across native method calls, use a global reference instead. A global reference is created from a local reference by calling NewGlobalReference on the the local reference.That is not precise. The scope is the executing thread. You can pass a local reference to another method without problem.
I assume this enables the C code to maintain a global reference to a java object even if it's not referenced anymore from the Java variables, right?
It enables access to it to be insured across multiple threads in terms of execution scope. Normally you should not use them.

Conversion of java Array to oracle SQL Array while calling Stored Procedure

How java Array can be converted to oracle SQL array while calling Stored procedure with callable statement.
i.e java Array ---> Sql Array in Oracle while setting the datatypes to callable statement arguments.

Look at:
http://forum.java.sun.com/thread.jsp?forum=48&thread=376735&tstart=0&trange=15
Paul

How to call a C sort function to sort a Java Array.

My name is David, I'm interning this summer doing some High Performance Computing work. I'm significantly out of my comfort zone here; I am primarily a network/network security geek, not a programming guy. I took one Java based class called problem solving with programming where we wrote like 3 programs in Java and did everything else in pseudocode and using a program called Alice http://www.alice.org/ to do things graphically. Learned basically no actual programming syntax. Also have done some self-taught perl, but only through one book and I didn't finish it, I only got about half way through it. So my expertise in programming are pretty much null.
That being said, I currently am tasked with having to figure out how to make JNI work... specifically at this time I am tasked with writing an array in Java, and designing a C program that can be called by means of JNI to sort the array. I have chosen to work with the Merge Sort algorithm. My method of coding is not one where I write the entire thing from scratch, I don't particularly have a need to master languages at this point, rather I just need to make them work. I am interested in learning, but time is of the essence for me right now. So thus far what I have done is take sample codes and tweak them to meet my purpose. However, I currently am unable to make things work. So I am asking for help.
I am going to paste 3 codes here, the first one will be my basic self-written instructions for JNI (Hello World Instructions), the second one will be my Java Array, and the third one will be my MergeSort function. I am not asking for you to DO my work for me by telling me how to manipulate my code, but rather I am asking for you to send me in the direction of resources that will be of some aid to me. Links, books (preferrably e-books so I don't have to go to a library), anything that you can send my direction that may help will be deeply appreciated. Thanks so much!
JNI Instructions:
/*The process for calling a C function in Java is as follows:
1)Write the Java Program name. Eg. HelloWorld.java
2)Compile it: javac HelloWorld.java
3)Create a header file: javah -jni HelloWorld
4)Create a C program eg. HelloWorld.java
5)Compile the C program creating a shared library eg. libhello.so (My specifc command is cc -m32 -I/usr/java/jdk1.7.0_05/include -I/usr/java/jdk1.7.0_05/include/linux -shared -o libhello.so -fPIC HelloWorld.c
6) Copy the library to the java.library.path, or LD_LIBRARY_PATH (in my case I have set it to /usr/local/lib.
7)Run ldconfig (/sbin/ldconfig)
8)Run the java program: java HelloWorld. */
//Writing the code:
//For the HelloWorld program:
//In java:
//You need to name a class:
class HelloWorld {
//You then need to declare a native method:
public native void displayHelloWorld();
//You now need a static initializer:
static {
//Load the library:
System.loadLibrary("hello");
/*Main function to call the native method (call the C code)*/
public static void main(String[] args) {
new HelloWorld().displayHelloWorld();
//In C:
#include <jni.h> //JNI header
#include "HelloWorld.h" //Header created by the javah -jni command parameter
#include <stdio.h> //Standard input/output header for C.
//Now we must use a portion of the code provided by the JNI header.
JNIEXPORT void JNICALL
Java_HelloWorld_displayHelloWorld(JNIENV *env, jobject obj)
//Naming convention: Java_JavaProgramName_displayCProgramName
    printf("Hello World!\n");
    return;
}Java Array:
class JavaArray {
     private native int MergeSort(int[] arr);
     public static void main(String[] args)
         int arr[] = {7, 8, 6, 3, 1, 19, 20, 13, 27, 4};
     static
         System.loadLibrary("MergeSort");
}Hacked and pieced together crappy C Merge Sort code:
#include <jni.h>
#include <stdio.h>
#include "JavaArray.h"
JNIEXPORT jint JNICALL
Java_JavaArray_MergeSort(JNIEnv *env, jobject obj, jintArray arr[],jint low,jint mid,jint high)
   jint i,j,k,l,b[10];
l=low;
i=low;
j=mid+1;
while((l<=mid)&&(j<=high))
    if(arr[l]<=arr[j])
       b=arr[l];
l++;
else
b[i]=arr[j];
j++;
i++;
if(l>mid)
for(k=j;k<=high;k++)
b[i]=arr[k];
i++;
else
for(k=l;k<=mid;k++)
b[i]=arr[k];
i++;
for(k=low;k<=high;k++)
arr[k]=b[k];
void partition(jint arr[],jint low,jint high)
jint mid;
if(low<high)
mid=(low+high)/2;
partition(arr,low,mid);
partition(arr,mid+1,high);
sort(arr,low,mid,high);

You're doing OK so far up to here:
Java_JavaArray_MergeSort(JNIEnv *env, jobject obj, jintArray arr[],jint low,jint mid,jint high)This is not correct. It is not what was generated by javah. It would have generated this:
Java_JavaArray_MergeSort(JNIEnv *env, jobject obj, jintArray arr,jint low,jint mid,jint high)A 'jintArray' is already an array, embedded in an object. You don't have an array of them.
So you need to restore that, and the header file, the way 'javah' generated them, then adjust your code to call GetIntArrayElements() to get the elements out of 'arr' into a local int[] array, sort that, and then call ReleaseIntArrayElements() to put them back.

Manipulating java array object in an oracle procedure

hi there,
i have a java store procedure that returns an array of filenames, and i have an oracle stored procedure that will for each filename returned in the java array object, open that file do some processing and load the data into database tables, now my question is, would an oracle 9i varray object be compatible with a java array, or should i pass in a pl/sql table to store the filnames returned?
i really am stuck at this point and need help !!!!
Thanx

Wole,
Have you searched the code samples available at the Technet Web site? Could you not find a relevant one?
Have you tried searching the Ask Tom Web site?
Good Luck,
Avi.

Java 5.0 XML Parsing Error

I've written a XML parser awhile ago, and it works perfectly when running using Java 1.4.2_04.
Now when running with Java 5.0 Beta 2, the parser simply crashes. It looks like when using node.getAttributes(), it reads in each attributes in reverse order than the parser in Java 1.4.2_04. The last attribute is indexed 0, and so forth ...
I wonder if anyone else has experienced this? Is this a bug in Java 5.0 Beta 2? Any thoughts?
Thanks in advance!

But my question is why Java 5.0 XML parser reads in
attributes in different order? Isn't that a potential
compatibility problem for a lot of codes written for
Java 1.4.2?The XML specification explicitly says that the order of attributes is meaningless. So your "why" is a pointless question. (You'll notice that all Java parsers return the attributes in a Map, which has no specified order.) And it's only a potential compatibility problem for code that erroneously relies on the behaviour of a particular parser.

Question about Java,XSLT and XML

I am new to Java and XML. I'm not quite clear the relationship between Java,XSLT and XML.
To exercise, I am going to write a Java program that makes embedded calls to an XSLT processor(XALAN), to produce results for several constrained transformations from a given XML document(x.xml) such as:
1.Transform the x.xml (which satisfies d1.dtd) in such a way that it now conforms to the DTD d2.dtd. Output the resulting xx.xml document.
2.query some information from the x.xml and then form an Html output.
3.summary some information, do some statistics from the x.xml and then form an Html output.
I don't konw which java classes and XSLT functions might be used.(Actually I don't know how/where to start).
Can anyone give me some clue ?
thanks a lot!

You must provide XSLT stylesheeds to specify transformations (1), (2),
and (3); let's call those stylesheets task1.xsl and so on.
The following code will transform x.xml into xx.xml according to task1.xsl. It gives you an idea which packages and classes to use, but it doesn't teach you proper Java programming technics :)
import java.io.File;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
public class Test
    public static void main(String[] args) throws Exception
        TransformerFactory factory = TransformerFactory.newInstance();
        Source config = new StreamSource(new File("task1.xsl"));
        Transformer transformer = factory.newTransformer(config);
        Source source = new StreamSource(new File("x.xml"));
        Result result = new StreamResult(new File("xx.xml"));
        transformer.transform(source, result);
}To read about XSLT, see:
http://www.w3.org/TR/xslt
there is a tutorial on using XSLT with Java:
http://java.sun.com/xml/jaxp/dist/1.1/docs/tutorial/xslt/index.html.

Customize -java-wsdl-mapping.xml with EJB3 web service

Using OC4J 10.1.3, I have an EJB that I am exposing as a web service using JSR-181 annotations. Is it possible to customize the generated <ServiceName>-java-wsdl-mapping.xml file? I tried putting my own version in META-INF/ of my ejb jar, but it didn't seem to pick up on it.

I was told the product manager and/or developers from Oracle watched this board. Doesn't anyone have a response to this?

Ignore some fields while saving a Java class into XML

Hi!
I've seen in this forum that there is an easy way of saving Java classes to XML files using Castor. I want to save some Java classes into XML, but not all the fields of the class. For example, I want to ignore all lists. Is there any easy way to do something like this:
class Java2XML{
          public static void makeXML(Object object)
                    for all fields in object
                              if field extends List, ignore
                              else, include field in XML
}Thanks in advance!

You can add a managed bean by:
- manually adding a definition in the faces config source tab.
- creating a bean in the overview tab of the faces-config editor.
So yes, you can edit the faces-config manually.
I hope this answer your question,
Regards,
Koen Verhulst

Java Arrays to XML

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