Create view object from

I create temporary table and I have to create view object and display data from that object. After that I have to delete temporary table.
How to do it?
Thanks!

Check out the createViewObjectFromQueryStmt() method of the Application Module.
See:
http://www.oracle.com/technology/products/jdev/tips/muench/mostcommon/index.html#vo

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Create View Object programattically from XML input

Hi,
I have requirement to create view object from xml at run time in ADF application. is there any way to create view object dynamically in java program from xml?
My requirement is to call a webservice and generate view object from the response of the web service call.
Thanks

I want to create view objects from different web services and the same will be available to the developer at the time of development. I don't want to create web service proxies for each of the web service. this will simplify the developers task to create proxy and data controls. the one thing developer has to do is select the service and base on the service the view objects will be created to develop pages accordingly.

How to bind UI control after having created view object

Hi,
I'm creating view object from an sql query
vo = panelBinding.getApplication().getApplicationModule().createViewObjectFromQueryStmt("ViewObj", strSQL);
and I want set model to a table
table1.setModel((TableModel)panelBinding.bindUIControl("ViewObj", table1));
but it doesn't work and shows null pointer exception

Take a look at the static createAttributeListBinding() methods in JUTableBinding.
Sascha

A dynamic table based on run-time created view object -- please help!

Hello!
I'm trying to create a dynamic table based on an run-time created view object. All go ok, but table binding component take the first view/iterator state and don't reflect changes they have. Please, take a look:
1. At run-time the view is being replaced by new red-only one based on query in application module:
getQueryView().remove();
createViewObjectFromQueryStmt("QueryView", statement);
2. Page definition file contains an iterator (using iterator or methodIterator - doesn't matter) binding and table, which binds to the iterator, like:
<methodIterator id="distributeQuery1Iter" Binds="distributeQuery1.result"
DataControl="QueryServiceDataControl" RangeSize="10"/>
<table id="distributeQuery11" IterBinding="distributeQuery1Iter"/>
3. The page code uses <af:table>. But, if I use table binding (it's right) like this:
<af:table var="row" value="#{bindings.distributeQuery11.collectionModel}">
<af:forEach items="#{bindings.distributeQuery11.attributeDefs}" var="def">
the table will never changed (i.e. still show the first view instance).
When I tried to use iterator binding directly (it's bad and cannot provide all needed features unlike CollectionModel from table binding) I saw that table works!
(Code is somehing like:
<af:table var="row" value="#{bindings.myIterator.allRowsInRange}">
<af:forEach items="#{bindings.myIterator.attributeDefs}" var="def">
Why the table binding do not reflect changes in iterator? Or should I use different approach?
Thanks in advance!
Ilya.

I got it to work! I used a hybrid approach comprised of some of your code and some of Steve Muench's AcceessAppModuleInBackingBean example.
In the setBindings method, I execute an app module method that redefines the query, then I used your code to delete and recreate bindings and iterator:
public void setBindingContainer(DCBindingContainer bc) {
this.bindingContainer = bc;
rebuildVO();
The rebuildVO() method looks like the code you provided in your example:
private void rebuildVO() {
DCDataControl dc;
DispatchAppModule dApp;
DCBindingContainer bc;
DCIteratorBinding it;
OperationBinding operationBinding;
ViewObject vo;
DCControlBinding cb;
try {
bc = getBindingContainer();
dc = bc.findDataControl(DATACONTROL);
dApp = (DispatchAppModule)dc.getDataProvider();
// Execute App Module Method to rebuild VO based upon new SQL Statement.
dApp.setDispatchViewSQL();
vo = dApp.findViewObject(DYNAMIC_VIEW_NAME);
it = bc.findIteratorBinding(DYNAMIC_VO_ITER_NAME);
it.bindRowSetIterator(vo, true);
// logger.info("Remove value binding...");
cb = bc.findCtrlBinding(DYNAMIC_VIEW_NAME);
cb.getDCIteratorBinding().removeValueBinding(cb);
bc.removeControlBinding(cb);
// logger.info("Creating new value binding...");
FacesCtrlRangeBinding dynamicRangeBinding =
new FacesCtrlRangeBinding(null,
bc.findIteratorBinding(DYNAMIC_VO_ITER_NAME), null);
// logger.info("Add control binding...");
bc.addControlBinding(DYNAMIC_VIEW_NAME, dynamicRangeBinding);
} catch (Exception e) {
e.printStackTrace();
And my App Module method that redefines the view object looks like this:
public void setDispatchViewSQL() {
String SQL =
"begin ? := PK_BUsiNESS.F_GETDISPATCHVIEWSQL();end;";
CallableStatement st = null;
String ViewSQL = null;
try {
st = getDBTransaction().createCallableStatement(SQL,
DBTransaction.DEFAULT);
* Register the first bind parameter as our return value of type LONGVARCHAR
st.registerOutParameter(1, OracleTypes.LONGVARCHAR);
st.execute();
ViewSQL = ((OracleCallableStatement) st).getString(1);
findViewObject(DYNAMIC_VO_NAME).remove();
ViewObject vo = createViewObjectFromQueryStmt(DYNAMIC_VO_NAME, ViewSQL);
vo.executeQuery();
} catch (SQLException s) {
throw new JboException(s);
} finally {
try {
st.close();
} catch (SQLException s) {
s.printStackTrace();
When I run it I get my desired results. One thing I don't quite understand is why when the page is first rendered it shows the last set of records rather than the first. Now I have to figure out how to put navigation URLS in each of the table cells.
Thanks for your help; I would not have gotten this far without it,
Jeff

How to execute Custom java data source LOV view object from a common mthd?

Hi,
My application contains Custom java data source implemented LOVs. I want to have a util method which gets the view accessor name, find the view accessor and execute it. But i couldn't find any API to get the view accessors by passing the name.
Can anyone help me iin how best view accessors can be accessed in common but no by creating ViewRowImpl class (By every developer) and by accessing the RowSet getters?
Thanks in advance.

I am sorrry, let me tell my requirement clearly.
My application is not data base driven. Data transaction happens using tuxedo server.
We have entity driven VOs as well as programmatic VOs. Both are custom java data source implemented. Entity driven VOs will participate in transactions whereas programmatic VOs are used as List view object to show List of values.
Custom java datasource implementation in BaseService Viewobject Impl class looks like
        private boolean callService = false;
    private List serviceCallInputParams = null;
    public BaseServiceViewObjectImpl()
        super();
     * Overridden for custom java data source support.
    protected void executeQueryForCollection(Object qc, Object[] params, int noUserParams)
        List dataFromService = null;
        if(callService)
            callService = retrieveDataFromService(serviceCallInputParams);
        setUserDataForCollection(qc, dataFromService != null? dataFromService.iterator(): null);
        super.executeQueryForCollection(qc, params, noUserParams);
     * Overridden for custom java data source support.
    protected boolean hasNextForCollection(Object qc)
        Iterator<BaseDatum> datumItr = (Iterator<BaseDatum>) getUserDataForCollection(qc);
        if (datumItr != null && datumItr.hasNext())
            return true;
        callService = false;
        serviceCallInputParams = null;
        setFetchCompleteForCollection(qc, true);
        return false;
    }Individual screen developer, who want to load data to VO, will do something like the below code in their VO impl class
    public void fetch()
        BaseServiceViewObjectImpl vo = this;
        vo.setCallService(true);
        vo.setServiceCallInputParams(new ArrayList());
        vo.executeQuery();
    }As these custom java data source implemented LOV VOs comes across the screens, i want to have a util method at Base VOImpl class, that gets the view accessor name, finds the LOV VO instance, retrieves data for that. I want to do something like
     * Wrapper method available at Base Service ViewObject impl class
    public void fetchLOVData(String viewAccessorName, List serviewInputParams)
        // find the LOV View object instance
        BaseServiceViewObjectImpl lovViewObject = (BaseServiceViewObjectImpl) findViewAccessor(viewAccessorName);
        // Get data for LOV view object from service
        lovViewObject.setCallService(true);
        lovViewObject.setServiceCallInputParams(serviewInputParams);
        lovViewObject.executeQuery();
Question:
1. Is it achievable?
1. Is there any API available at View Object Impl class level, that gets the view accessor name and returns the exact LOV view object instance? If not, how can i achieve it?

Call view object from ViewController [SOLVED]

I'm using a valueChangeListener method in a managed bean, which I'd like to use to call a method on a view object. How can I call the view object from a managed bean class?
Regards

Maik,
It is best practice to create a method on your application module, and have this method manipulate VO's and call VO methods.
See section 8.5.3.1 in ADF Developers Guide for more info o calling an AM method from a managed bean:
http://download-west.oracle.com/docs/html/B25947_01/bcservices005.htm#sthref673
Please use the JDeveloper forum in the future for question like this, that are not related to JHeadstart.
Steven Davelaar,
Jheadstart team.

Can you create an object from a string

I have been working on creating a dynamic form, creating the
form items from an xml file. I am getting very close to conquering
this task. I will share it when it's complete.
However, I am stuck at the moment trying to create an object
from a string. For example, if the xml item is an HBox I want to
create an HBox. Like this: parentObject = new arrayOfFormItems[
index ]..type ()
This isn't working. First, is this possible using some syntax
I am unaware of in Flex? I don't want to use a large if or case
statement if possible.
Thanks in advance for your help!

Thank you very much. Indeed that did solve the one problem. I
missed the casting as a Display Object. That is awesome!
I do still however, have to instantiate one of every item I
want to dynamically create or I get the following error when I try
to create a dynamic object that I have not instantiated before.
ReferenceError: Error #1065: Variable HBox is not defined.
at global/flash.utils::getDefinitionByName()
at MyForm/buildForm()
at DynamicForm/::onComplete()
at
flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at flash.net::URLLoader/flash.net:URLLoader::onComplete()
I read that you have no choice but to instantiate one of each
type to force the linker to link the code for that class into the
.swf. Unless you know another way to force it.
This is what I have in my Application mxml to get it to work:
<mx:HBox>
<mx:Text visible="false"/>
<mx:TextArea visible="false"/>
<mx:TextInput visible="false"/>
<mx:DateField visible="false"/>
</mx:HBox>
And those are the types I'm using to test with. . . I will
have to add all the others I want to use as well . . .

Dynamically create Value Objects from XML file

Hi
I want to create a value object from Xml file dynamically,like in the xml file i have the name of the variable and the datatype of the variable.is it possible do that,if so how.

Read about apache's Digester tool. This is part of the Jakartha project. This tool helps in creating java objects from the XML files. I am not sure, if that is what u r looking for.

Why can't I create new object from a class that is in my big class?

I mean:
class A
B x = new B;
class B
and how can I solve it if I still want to create an object from B class.
Thank you very much :)

public class ItWorksNow {
public ItWorksNow() {
public static void main ( String[] argv ) throws Exception {
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public class DaInnaClass {
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How do I create an object from a filename?

I'm traversing directories and storing a list of files in a File array. Then I traverse the array looking at the extension of the file. If it is .java then I would like to instantiate it as a class so that I may pass the new object to another function which will examine its methods. I've tried Class.forName(file.getCanonicalPath()) and it throws a ClassNotFound exception. How can I create an object from a valid filename, please?

Rick_Avlonitis wrote:
If it is .java then I would like to </snip>.java files contain source code, they can't be "instantiated". Class.forName() takes a classname as parameter, i.e. "mypackage.MyClass". A class name is not a file name, and it doesn't have an extension. As stated in the other reply, you'll need to have the class on your class path.

Trouble on Create Entity Object from AS400/DB2 version 5 rev 4

Hi, hope any1 can help..
I using jt400.jar (com.ibm.as400.access.AS400JDBCDriver) with
jdbc url : jdbc:as400://host
to create connection.
However, when I try to create entity or business component based on the connection, it gave me "Attribute list error":
java.lang.NullPointerException
     at oracle.jbo.dt.jdevx.db.DBApiUtil.fillAttributeListInternal2(DBApiUtil.java:1249)
     at oracle.jbo.dt.objects.JboDBUtil.fillAttributeListInternal2(JboDBUtil.java:87)
     at oracle.jbo.dt.objects.JboUtil.fillAttributeListInternal2(JboUtil.java:2749)
     at oracle.jbo.dt.objects.JboUtil.fillAttributeListWithException(JboUtil.java:2711)
     at oracle.jbo.dt.objects.JboUtil.fillAttributeListInternal(JboUtil.java:2687)
     at oracle.jbo.dt.objects.JboUtil.fillAttributeList(JboUtil.java:2626)
     at oracle.jbo.dt.objects.JboUtil.fillAttributeList(JboUtil.java:1059)
     at oracle.jbo.dt.ui.main.DtuUtil.createEntityFromThread(DtuUtil.java:562)
     at oracle.jbo.dt.ui.pkg.PKEntityThread.createEntity(PKEntityThread.java:898)
     at oracle.jbo.dt.ui.pkg.PKEntityThread.createEntity(PKEntityThread.java:719)
     at oracle.jbo.dt.ui.pkg.PKEntityThread.doEntityViewCreation(PKEntityThread.java:537)
     at oracle.jbo.dt.ui.pkg.PKEntityThread.createObjects(PKEntityThread.java:470)
     at oracle.jbo.dt.jdevx.ui.pkg.XPKComponentWizardEntityThread.createObjects(XPKComponentWizard.java:491)
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     at oracle.ide.dialogs.ProgressBar.run(ProgressBar.java:655)
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I had refer other posts, but i might miss out some important piece. Beside, I able to create ViewObject based on sql query. Any1 able to show me some direction..perhaps..thanks

Thanks ...I tried both SQL92 and db2...and tried both Java & Java Extended for Oracle.. too..I able to connect to the dbase, browse thought the db2 schema n tables, even able to create view object with sql query..just stuck in entity object creation..feel weird n cant find much of documentation on the web to describe this behaviour too..

Creating View Objects at Runtime for Validation

In Oracle® Application Development Framework
Developer’s Guide For Forms/4GL Developers tutorial there is a topic about Creating View Objects at Runtime for Validation.
Is there any sample code available for this topic?
Please help
Regards
S Karar

I have created a helper method . The code is given below
protected ViewObject getValidationVO(String viewObjectDefName) {
// Create a new name for the VO instance being used for validation
String name = "Validation_" + viewObjectDefName.replace('.', '_');
// Try to see if an instance of this name already exists
ViewObject vo = getDBTransaction().getRootApplicationModule().findViewObject(name);
// If it doesn't already exist, create it using the definition name
if (vo == null) {
vo = getDBTransaction().getRootApplicationModule().createViewObject(name,viewObjectDefName);
return vo;
// Validation_bc4j_project of type ApplicationModule not found
and created a validation method.
The code inside validation method is given below.
public boolean validateAvgMr(Number data) {
String batch_catg = getQuality();
// Get the view object instance for validation
ViewObject vo = getValidationVO("bc4j_project.v_sqc0150");
if (getTestStage()=="DOLLOP" && getQuality()=="DECO")
// Set it's bind variables (which it will typically have!)
vo.setNamedWhereClauseParam("batch_catg","DECO");
vo.executeQuery();
Number dol_mr_lcl=(Number)vo.first().getAttribute("DolMrLclStd");
setStdMrLcl(dol_mr_lcl);
return true;
return true;
I have checked the validation view and it is returing value with the same bind variable value but is not returning any value when using inside this method validation.
I have checked several times but can't find the fault in the code.
Please help

Create Class objects from an Array of File Objects

Hi There,
I'm having extreme difficulty in trying to convert an array of file objects to Class objects. My problem is as follows: I'm using Jfilechooser to select a directory and get an array of files of which are all .class files. I want to create Class objects from these .class files. Therefore, i can extract all the constructor, method and field information. I eventually want this class information to display in a JTree. Very similar to the explorer used in Netbeans. I've already created some code below, but it seems to be throwing a NoSuchMethodError exception. Can anyone please help??
Thanks in advance,
Vikash
/* the following is the class im using */
class FileClassLoader extends ClassLoader {
private File file;
public FileClassLoader (File ff) {
this.file = ff;
protected synchronized Class loadClass() throws ClassNotFoundException {
Class c = null;
try {
// Get size of class file
int size = (int)file.length();
// Reserve space to read
byte buff[] = new byte[size];
// Get stream to read from
FileInputStream fis = new FileInputStream(file);
DataInputStream dis = new DataInputStream (fis);
// Read in data
dis.readFully (buff);
// close stream
dis.close();
// get class name and remove ".class"
String classname = null;
String filename = file.getName();
int i = filename.lastIndexOf('.');
if(i>0 && i<filename.length()-1) {
classname = filename.substring(0,i);
// create class object from bytes
c = defineClass (classname, buff, 0, buff.length);
resolveClass (c);
} catch (java.io.IOException e) {
e.printStackTrace();
return c;
} // end of method loadClass
} // end of class FileClassLoader
/* The above class is used in the following button action in my gui */
/* At the moment im trying to output the data to standard output */
private void SelectPackage_but2ActionPerformed(java.awt.event.ActionEvent evt) {
final JFileChooser f = new JFileChooser();
f.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
int rVal = f.showOpenDialog(Remedy.this);
// selects directory
File dir = f.getSelectedFile();
// gets a list of files within the directory
File[] allfiles = dir.listFiles();
// for loop to filter out all the .class files
for (int k=0; k < allfiles.length; k++) {
if (allfiles[k].getName().endsWith(".class")) {
try {
System.out.println("File name: " + allfiles[k].getName()); // used for debugging
FileClassLoader loader = new FileClassLoader(allfiles[k]);
Class cl = loader.loadClass();
//Class cl = null;
Class[] interfaces = cl.getInterfaces();
java.lang.reflect.Method[] methods = cl.getDeclaredMethods();
java.lang.reflect.Field[] fields = cl.getDeclaredFields();
System.out.println("Class Name: " + cl.getName());
//print out methods
for (int m=0; m < methods.length; m++) {
System.out.println("Method: " + methods[m].getName());
// print out fields
for (int fld=0; fld < fields.length; fld++) {
System.out.println("Field: " + fields[fld].getName());
} catch (Exception e) {
e.printStackTrace();
} // end of if loop
} // end of for loop
packageName2.setText(dir.getPath());
}

It's throwing the exeption on the line:
FileClassLoader loader = new FileClassLoader(allfiles[k]);
I'm sure its something to do with the extended class i've created. but i cant seem to figure it out..
Thanks if you can figure it out

How to create and object from an arrayList

Hi I want to create an object from an arrayList.
here is my code...
BillingQueryParam billingQueryParam = new BillingQueryParam();
/*This BillingQueryParam and billingItemManagerActionForm has getter and setter method for following attributes.
private int billingItemId;
private String[] paramName;
private String[] defaultParamValue;
List billingQueryParamList = new ArrayList();
for(int i = 0; i < billingItemManagerActionForm.getParamName().length; i++) {
     billingQueryParam.setParamName(billingItemManagerActionForm.getParamName());
for(int i = 0; i < billingItemManagerActionForm.getDefaultParamValue().length; i++) {
billingQueryParam.setDefaultParamValue(billingItemManagerActionForm.getDefaultParamValue());
     billingQueryParam.setBillingItemId(billingItem.getBillingItemId());
     billingQueryParamList.add(billingQueryParam);
System.out.println("****** ArrayList Size-->"+billingQueryParamList.size());
for (Iterator iter = billingQueryParamList.iterator();iter.hasNext();) {
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      System.out.println("****** Param Name-->"+billingQueryParam.getParamName()); //printing an array of paramName
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}Here after iterating this list I want to create an object of billingQueryParam which contains a single value of itemId, paramName,paramTypeId and defaultParamName and I want to persist this object in database.
Please help...!!!
Thanks

Now this is too much.. Do i need to tell this thing to u as well. How did u come to this forum?
Can't u see link to Java programming forum at the top.

Possible to create an object from a String?

Hi,
is is somehow at all possible to create an object from a String ?
If we have etc.
String txt = "Carrot()";
Is it then possible to somehow cast that String and interpret it as a class type that it should make an object of ?
Like
new txt; - would then give me the same as new Carrot(); ?
Hope you understand what i mean.
Martin From... :-)

Class.forName("some.package.Carrot");

Create view object from

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