How to populate a jsf table with an array?

[goodvibrato]

I have a JSF project where I'm using a table and I would like to populate that table with some custom information without using a database. I'm trying to write my own data provider. I was wondering if anyone knows how to populate a jsf table using an array. Any help would be appreciated. Thanks.

[Futaleufu_John]

Use the ObjectListDataProvider. The following blog entry provides a
workaround for a bug in the data provider.

http://blogs.sun.com/winston/entry/objectlistdataprovider_workaround
http://blogs.sun.com/winston/entry/objectlistdataprovider_workaround

goodvibrato wrote:

[goodvibrato]

Thanks for the reply I'll check that stuff out.

[goodvibrato]

Hey I looked at the tutorials, but it's using Creator 2 not Netbeans. If anyone knows how to populate a jsf table without using a database I would be very grateful.

[Rick Fincher]

It's basically the same. Creator was merged with Netbeans several years
ago.

Rick

goodvibrato wrote:

[Futaleufu_John]

I migrated from Creator to NetBeans about a year ago. The Creator tutorials
should work for NetBeans too as the two platforms share many of the same
features.

I say this because my Creator web app used object list data providers and
when I migrated to NetBeans I didn't have to change anything. So I'm
confident that the Creator tutorials regarding that are still valid.

Hope this helps.

goodvibrato wrote:

[goodvibrato]

Yeah, I'm guessing that tutorial is a little dated because I tried right clicking on the SessionBean1.java, but there wasn't an option to add a property and I don't know Netbeans well enough to find another way. I did manage to populate the table with the setValue() method of the defaultTableDataProvider so that will work for now. Thanks anyway.

[Don Millhofer]

Hi goodvibrato, not sure if you are using VWP but this is how I would do it if you are:

Create a custom ObjectListDataProvider, define it in the SessionBean1 with getter and setter, and when you drag and drop a dataTable onto a form in the designer you should be able to bind the provider to the table using the TableLayout window, once bound you may use any of the object's properties as table columns or define your own.

Don


At 06:08 AM 11/15/2008, you wrote:

[goodvibrato]

Hey Don, I am using Visual JSF. Not sure if that's part of VWP or not. I dragged and dropped the dataTable and made my own data provider, but I wasn't able to bind the table to the provider using the table layout option. However, I have a woodstock table and it will come up as an option in that table. Would you mind posting a code example so I can see what a custom data provider should look like? Here's what I have so far:

[Don Millhofer]

Hi goodvibrato,

Here are examples of the components - start with a simple object for the object data provider like:

package org.myOrg.myProj;

import java.io.Serializable;

public class MyObj implements Serializable {
private int myNum;
private String myString;

public MyObj() {}

public MyObj(String ms, int mn) {
myString = ms; myNum = mn;
}

public String getMyString() {
return this.myString;
}

public void setMyString(String ms) {
this.myString = ms;
}

public int getMyNum() {
return this.myNum;
}

public void setMyNum(int mn) {
this.myNum = mn;
}
}
-----------------------------------------------------------------------------------------------------------------

After the object we can create the custom ObjectListDataProvider like this:

import com.sun.data.provider.impl.ObjectListDataProvider;
import java.util.ArrayList;
import java.util.List;

public class MyOLDP extends ObjectListDataProvider {
// NOTE ObjectListDataProvider implements Serializable!
private List<MyObj>al = new ArrayList<MyObj>();

public MyOLDP() {
this.al.add(new MyObj());
setList((List<MyObj>)al);
setObjectType(MyObj.class);
List<MyObj>dataList = (List<MyObj>) (createDefaultArrayList());
al.clear();
al.addAll((List<MyObj>)dataList);

}

private List createDefaultArrayList() {
List<MyObj>me = new ArrayList<MyObj>();
me.add(new MyObj("String 1", 1));
me.add(new MyObj("String 2", 2));
me.add(new MyObj("String 3", 3));
me.add(new MyObj("String 4", 4));
al.clear();
al.addAll((List<MyObj>)me);
return (List<MyObj>)al;
}
}

----------------------------------------------------------------------------------------------

Then you define it in the SessionBean1 as follows:

import org.myOrg.myProj.MyOLDP; // Required if you used a separate package for MyOLDP

public class SessionBean1 extends AbstractSessionBean {
private MyOLDP myOLDP = new MyOLDP();

public MyOLDP getMyOLDP() {
return this.myOLDP;
}

public void setMyOLDP(MyOLDP mo) {
this.myOLDP = mo;
}

--------------------------------------------------------------------------------------------------------------

Once this is done you may have to stop and start the IDE (depending on the release you are running), then you will see the custom dataprovider in the TableLayout window as a selection option for the table you dragged and dropped on the form. Select the custom dataprovider and you will see that you can select any of it's properties as columns. Build your own logic on top of this.

Don







At 08:55 AM 11/17/2008, you wrote:

[goodvibrato]

It works! Thanks for the help Don. The only thing I had to do was delete the al.clear() and al.addAll((List<MyObj>)me) lines in the createDefaultArrayList method and then make it return me instead of al, otherwise I wouldn't see any data. Anyway, if it wasn't for you I'd probably still be hunting for a tutorial on google. Thanks again.

[knugen]

thank you so much, it works for me, too..