First item of itemrenderer created twice?

I have a datagrid with an itemrenderer witch for every item
created it adds an event listener to the parentdocument.But the
first item(as sorted from the datagrid) always has two listeners so
the handler insideot runs twice.anyone know What's is wrong?

Flex itemRenderers are only created for the visible rows of a
list control, plus one or two extra for recycle buffering. The
itemRenderers are recycled as the user scrolls the list. For
example, if you have 1000 items but only 10 rows visible, then only
11 or 12 itemRenderers are created. At first they show records
1-10. As the user scrolls, the data for record 1 scrolls out of
view, but the itemRenderer that was showing that data is moved to
the bottom of the list area and is given the data for row 11. The
itemRenderers for records 2-10 are shifted upward.
Sorting the list simply causes the itemRenderers to receive
new data - they generally do get moved to new locations as the
result of a sort of a filter.
If you add event listeners on the parentDocument you may be
getting very confused and mismatched data and events as the list is
scrolled.

Similar Messages

Performance issue : itemRenderers created twice

Hi,
I have a big performance issue with my flex app.
I have a repeater whose repeated items contain a Tree.
I noticed every of those tree elements where created twice (I
call a static incremental counter on their creationComplete event).
Does that symptom make you think of any problem I could have
in my code ?

First, Repeater is not a good choice if you have many complex
elements because it renderers all off the items. How many items are
you repeating? (what is the length of your dataProivder?)
Second, I suspect your methodology for analyzing the
instantiations. I have not see such a behavior. You might post a
sample app that demonstrates the problem.
Tracy

JList item selected is displayed twice. Please Assist

Folks,
I have this strange behaviour when I select an item from the JList.
When I select the an item, it gets displayed twice.
Can anyone tell me why this is being displayed twice?
I am also checking the Java Sun Swing tutorials site..but no luck as yet.
Attached is a short class.
If you click on Black or Blue etc ,it gets displayed twice...
public class JListDemo extends JFrame{
private JList colorList;
private Container c;
private String colorNames[] = {"Black", "Blue","Red","Green","Yellow"};
public JListDemo() {
super("JList Demo");
c = getContentPane();
c.setLayout(new FlowLayout());
/** Create a List */
colorList = new JList(colorNames);
colorList.setVisibleRowCount(3);
colorList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
c.add(new JScrollPane(colorList));
//** Set up Event Handler.
colorList.addListSelectionListener(
new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e)
System.out.println(colorList.getSelectedValue());
setSize(1000,550);
show();
public static void main(String[] args) {
JListDemo JListDemo1 = new JListDemo();
}

in your ListSelectionListener you must check if the event is one of multiple change events. In your case you get one event when the mouse first selects an item and possible more when you move the cursor over the other entries. If you are only interested in the final selection check if e.getValueIsAdjusting() is false.
// not interested in events if they are not final
if (e.getValueIsAdjusting())
return;
// do what ever you want
System.out.println(colorList.getSelectedValue());
...Hope this helps!

Remove first item of ListBox

Hello,
Can anyone tell me how to remove the first item of a ListBox.
I don't want to use dataprovider.removeItemAt(), because am
using the dataprovider elsewhere.
Anyone.
Thx

Flex itemRenderers are only created for the visible rows of a
list control, plus one or two extra for recycle buffering. The
itemRenderers are recycled as the user scrolls the list. For
example, if you have 1000 items but only 10 rows visible, then only
11 or 12 itemRenderers are created. At first they show records
1-10. As the user scrolls, the data for record 1 scrolls out of
view, but the itemRenderer that was showing that data is moved to
the bottom of the list area and is given the data for row 11. The
itemRenderers for records 2-10 are shifted upward.
Sorting the list simply causes the itemRenderers to receive
new data - they generally do get moved to new locations as the
result of a sort of a filter.
If you add event listeners on the parentDocument you may be
getting very confused and mismatched data and events as the list is
scrolled.

How to customize Category and Category items list while creating New Model

Hi,
what the most convenient way to customize the Category and Category items list while creating New Model?
This is standard:
Now, what we want to achieve, is to customize this menu, to:
1. Display in the Category window only f.e. two categories:
- EA Diagrams
- BPM Diagrams
2. In the EA Diagrams, we want to have f.e. four copies of City Planning diagram, each of them should have different elements available, f.e. in the first copy, only Architecture Areas shall be made available, in the second one Architecture Areas and Business Functions, in the third on f.e. only Business Functions shall be made available. Additionally, it should behave like a hierarchy ... meaning you can create the second diagram, only as child (related diagram) of the first diagram etc.
I know, excluding the particular diagrams/diagram elements can be configured using the right/profile settings, but how to:
1. Customize the standard New Model menu window
2. Create copies of City Planning Diagrams with different set-ups
3. Set the relationship between diagrams
Is such a configuration change possible?
Thanks a lot for your help!
Regards,
Rafal

Now, what we want to achieve, is to customize this menu, to:
Question #1. Display in the Category window only f.e. two categories:
- EA Diagrams
- BPM Diagrams
Click on Tools => General Options=> Model Creation
Click on Properties => at right of Default category set
Note : Model template does not work as Category. We can't set. An enchancement request has been open to SAP
In the following example I defined a new default (MyNewDefault.mcc). As you can see only BPMN models are available.
To create a new category set with BPMN choice
a) Copy default.mcc in MyNewDefault.mcc file.
    Go to Tools=>General Options=>Model Creation : Select your new category
    Go to Tools=>General Options=>Model Creation : Edit properties and remove all things you does not want keep
or
b) Go to Tools=>General options=>Model Creation : Edit properties and click on Save as button and specify the file name "MyNewDefault".
    Quit the window.
    Select you new category : Go to Tools=>General Options=>Model Creation : "MyNewDefault"
    Edit properties and remove all things you does not want keep.
    Save you new category
Question #2. How to define copies/replicas of existing diagrams
     Wrote an extension
Question #3. How to make sure, particular diagrams can be used (created) only on predefined "levels" and how to set the parent-child relationship, so that PD enforced it directly when creating a new diagram.
     Specify yours conditons in your extension attached to your model
     Example : When the user want create a child diagram : You can display a list of Parent Diagrams to select from.
     You can set in your extension by VBScript parent-child relationship
Question #4 In the EA Diagrams, we want to have f.e. four copies of City Planning diagram, each of them should have different elements available, f.e. in the first copy, only Architecture Areas shall be made available, in the second one Architecture Areas and Business Functions, in the third on f.e. only Business Functions shall be made available.
If I understand well your question. I suggest to take a look in
Repository=>Administration=>Objects Permission Profile
You can specify objects to show, mask, deactivate at model level.
You can specifiy your own metadata.
But I'm not sure you can mask, deactivate functions following diagram selection. It seem to specific.
Message was edited by: Benoit Le Nabec

Navigate to the first item in a updatable report

on my page i have a master/detail form. When a new detail - record is created, the cursor navigate to the first item on the page => it is the first item of the master! What I have to do, that the cursor navigate to the first item in the new detail-record ??
Thanks
Robert

Hi Andy,
thank you for your answer.
When the program start, I can not find the cursor. I think, I have a problem to reference the item in the updatable report. I wrote the following lines:
<script language="JavaScript1.1" type="text/javascript">
alert('Vor Cursor Navigation');
first_field('#FKOM_RUFNR#');
</script>
(FKOM_RUFNR is a column of the select statement in the report!!)
A second problem: The cursor navigate to the field - first_field('FIELD_NAME') - every time. But the cursor should navigate to the field in the updatable report, if the button "ADD" in the region of the updatable report was clicked. If the page was displayed without clicking the ADD - button, the cursor should navigate to the first item in the master form ( like => Cursor focus: first item on the page). How can I do that ??
Thanks
Robert

Is it possible to show first item in a Drop down list

Is it possible to automatically display the first item in a drop down list ?
The reason I ask is ... I am generating pre-filled PDF forms using XML data files.
Whenever there is a certain type of data I am populating a drop down list for the user to review.
Currently, the user must click on the drop down to see if data is there regardless of whether there is no data at all or many data lines of data..
I would like to make it clear to the user whether or not there is any data - right awa.y
I have considered creating a display item next (like a check box or a text field ) next to the drop down and setting it to cindicate if there is data, etc -
but i thougth that I would ask if the drop down could simply be set to automatically display the first item in the list (this is the preferred functionality)
If this is not possible I can always create a check box and set it if there is any data as an indicator for the user ..
Thanks

You can do this way..
Place the code in Inititalize event with Java Script
if(DropDownList1.rawValue == null)
DropDownList1.selectedIndex = 0;
You need to check if the Dropdown has a value selected from the previous save.. If not then set the selected item to 0th index. (which is 1st one in the dropdown values)..
Thanks
Srini

Af:inputListOfValues sets value of first item in result set when using enter key or tab and component set to autosubmit=true

I'm using JDev 11.1.1.6 and when I type a value into an af:inputListOfValues component and hit either the enter key or the tab key it will replace the value I entered with the first item in the LOV result set. If enter a value and just click out of the af:inputListOfValues component it works correctly. If I use the popup and search for a value it works correctly as well. I have a programmatic view object which contains a single transient attribute (this is the view object which is used to create the list of value component from) and then I have another entity based view object which defines one of its attributes as a list of value attribute. I tried using an entity based view object to create the LOV from and everything works as expected so I'm not sure if this is a bug when using programmatic view objects or if I need more code in the VOImpl. Also, it seems that after the first time of the value being replaced by the first value in the result set that it will work correctly as well. Below are some of the important code snippets.
Also, it looks like it only doesn't work if the text entered in the af:inputListOfValues component would only have a single match returned in the result set. For instance given the result set in the code: Brad, Adam, Aaron, Fred, Charles, Charlie, Jimmy
If we enter Cha, the component works as expected
If we enter A, the component works as expected
If we enter Jimmy, the component does not work as expected and returns the first value of the result set ie. Brad
If we enter Fred, the component does not work as expected and returns the first value of the result set ie. Brad
I also verified that I get the same behavior in JDev 11.1.1.7
UsersVOImpl (Programmatic View Object with 1 transient attribute)
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import oracle.adf.share.logging.ADFLogger;
import oracle.jbo.JboException;
import oracle.jbo.server.ViewObjectImpl;
import oracle.jbo.server.ViewRowImpl;
import oracle.jbo.server.ViewRowSetImpl;
// ---    File generated by Oracle ADF Business Components Design Time.
// ---    Wed Sep 18 15:59:44 CDT 2013
// ---    Custom code may be added to this class.
// ---    Warning: Do not modify method signatures of generated methods.
public class UsersVOImpl extends ViewObjectImpl {
    private static ADFLogger LOGGER = ADFLogger.createADFLogger(UsersVOImpl.class);
    private long hitCount = 0;
     * This is the default constructor (do not remove).
    public UsersVOImpl () {
     * executeQueryForCollection - overridden for custom java data source support.
    protected void executeQueryForCollection (Object qc, Object[] params, int noUserParams) {
         List<String> usersList = new ArrayList<String>();
         usersList.add("Brad");
         usersList.add("Adam");
         usersList.add("Aaron");
         usersList.add("Fred");
         usersList.add("Charles");
         usersList.add("Charlie");
         usersList.add("Jimmy");
         Iterator usersIterator = usersList.iterator();
         setUserDataForCollection(qc, usersIterator);
         hitCount = usersList.size();
         super.executeQueryForCollection(qc, params, noUserParams);
    } // end executeQueryForCollection
     * hasNextForCollection - overridden for custom java data source support.
    protected boolean hasNextForCollection (Object qc) {
         Iterator usersListIterator = (Iterator)getUserDataForCollection(qc);
         if (usersListIterator.hasNext()) {
             return true;
         } else {
             setFetchCompleteForCollection(qc, true);
             return false;
         } // end if
    } // end hasNextForCollection
     * createRowFromResultSet - overridden for custom java data source support.
    protected ViewRowImpl createRowFromResultSet (Object qc, ResultSet resultSet) {
         Iterator usersListIterator = (Iterator)getUserDataForCollection(qc);
         String user = (String)usersListIterator.next();
         ViewRowImpl viewRowImpl = createNewRowForCollection(qc);
         try {
             populateAttributeForRow(viewRowImpl, 0, user.toString());
         } catch (Exception e) {
             LOGGER.severe("Error Initializing Data", e);
             throw new JboException(e);
         } // end try/catch
         return viewRowImpl;
    } // end createRowFromResultSet
     * getQueryHitCount - overridden for custom java data source support.
    public long getQueryHitCount (ViewRowSetImpl viewRowSet) {
         return hitCount;
    } // end getQueryHitCount
    @Override
    protected void create () {
         getViewDef().setQuery(null);
         getViewDef().setSelectClause(null);
         setQuery(null);
    } // end create
    @Override
    protected void releaseUserDataForCollection (Object qc, Object rs) {
         Iterator usersListIterator = (Iterator)getUserDataForCollection(qc);
         usersListIterator = null;
         super.releaseUserDataForCollection(qc, rs);
    } // end releaseUserDataForCollection
} // end class
<af:inputListOfValues id="userName" popupTitle="Search and Select: #{bindings.UserName.hints.label}" value="#{bindings.UserName.inputValue}"
                                              label="#{bindings.UserName.hints.label}" model="#{bindings.UserName.listOfValuesModel}" required="#{bindings.UserName.hints.mandatory}"
                                              columns="#{bindings.UserName.hints.displayWidth}" shortDesc="#{bindings.UserName.hints.tooltip}" autoSubmit="true"
                                              searchDesc="#{bindings.UserName.hints.tooltip}"
                                              simple="true">
                          <f:validator binding="#{bindings.UserName.validator}"/>
</af:inputListOfValues>

I have found a solution to this issue. It seems that when using a programmatic view object which has a transient attribute as its primary key you need to override more methods in the ViewObjectImpl so that it knows how to locate the row related to the primary key when the view object records aren't in the cache. This is why it would work correctly sometimes but not all the time. Below are the additional methods you need to override. The logic you use in retrieveByKey would be on a view object by view object basis and would be different if you had a primary key which consisted of more than one attribute.
@Override
protected Row[] retrieveByKey (ViewRowSetImpl viewRowSetImpl, Key key, int i) {
    return retrieveByKey(viewRowSetImpl, null, key, i, false);
@Override
protected Row[] retrieveByKey (ViewRowSetImpl viewRowSetImpl, String string, Key key, int i, boolean b) {
    RowSetIterator usersRowSetIterator = this.createRowSet(null);
    Row[] userRows = usersRowSetIterator.getFilteredRows("UserId", key.getAttribute(this.getAttributeIndexOf("UserId")));
    usersRowSetIterator.closeRowSetIterator();
    return userRows;
@Override
protected Row[] retrieveByKey (ViewRowSetImpl viewRowSetImpl, Key key, int i, boolean b) {
    return retrieveByKey(viewRowSetImpl, null, key, i, b);

Validation on first item

Hi,
i am using apex_3.2.1.
I have these items and i want to create validation on p1_item1 to check values.if the value entered in first item is
exist into the database it shows the alert msg value already exist and control should not move to the next item.
p1_item1
p1_item2
p1_item3
p1_item4

Hi,
I want to focus the cursor on name item until the user
not entered the Unique value. I am sending
you login id and password.
what I have done i am dispalying
popup on item if user not entered the unique value in name item.
I have implement this using ajex. name is the item on which
i am displaying popup if value entered in name
item exist into the database popup should raise and after click on ok
button of popup cursor should point to the same item until user not entered the unique value.
1)The problem is cursor not focus
to the name item after display of the popup in case of incurrect value.
2)it display The popup if i am click on the cancel button too.
how could i resolve this problem. please help me to sort out this problem.
TABLE NAME: LANGUAGE_MAS
APPLICATION PROCESS: LANG_MAS\
PAGE ITEM: TAB_DATA_TYPE
i am sending you my application login id and password.
Application No-51552
page No -2 and 3
URL ---apex.oracle.com
Workspace   --- DISCUSSION
User Name ----   [email protected]
passowrd     ----      fuvubeEdited by: Vedant on May 19, 2011 10:17 PM

How to get first item of hashMap w/out knowing the key

Hi
can someone tell me if there is a way to get first item from a hashMap when you dont know what the key is. as the get method expects a defined 'key'
reason I am asking this:
I am using struts 2 UI <s:radio> tag. this tag takes a hashmap and creates radio maps. it has a 'value' attribute and if something is passed to this attribute then that radio button is checked by default. the list that contains radio buttons is created dynamically so i dont know what is actually in the hashMap key's. but i do know that key's are string.
so just wondering if there is a way to get first item from a hashmap without knowing the key...

thanks for the quick reply.
posted in java forums because thought it was a java API/workaround question. gave a little history because i didnt want people to start questioning my use of HashMap for this purpose..
anywhose..i've found a workaround.
If someone has a similar problem:
as the hashmap is being populated dynamically....set a String member of class to contain the first key thats being put in the hashmap. then have struts tag pick up that value.
also, through your post and reading hashMap api...its usefull to know that hasMaps do not gurantee the order of elements in it. So now I am using a TreeMap.
Thanks

TileLayout: First item in a row

I am using TileLayout on a Spark List. Is there a way for an individual itemRenderer to know that it is the first item in a row? Recycling would not be an issue - all the list items are on screen simultaneously.

If the class implement IDropInListItemRenderer , then you can access the listData and use the rowIndex property. If the class doesn't implement it , you will have to look at the interface and implement it yourself. Once you get it you can do something like this.
public function someFunct():void
if ( this.listData.rowIndex == 0 )
trace("Hoorah !");

Refusal W/O doble created twice

Hi,
When the user is creating in base of billing document a return of goods,
The order is created TWICE.....for the same Item,customer,quantity ETC.
Its not normal.Is there In customizing any possibility to check,why is happening
or its already some Abap user exit failing?
Thanks in advance.
William

Hi,
When you create the Return order again system will through the warning message warning message V1499. The message type has been hardcoded in the program.
FV45EF0V_VBEP-WMENG_PRUEFEN_FO
IF da_mengev > 0.
   WRITE da_mengev TO da_mengec UNIT vbap-vrkme.
   SET CURSOR FIELD us_feldname LINE sy-stepl.
   MESSAGE ID 'V1' TYPE da_dia NUMBER 499
           WITH vbap-posnr da_mengec us_vrkme.
But you can not change it to Error message untill you modify the standard code.
Regards,
Murali

How can i show the first item in the list as selected item

Aslam o Alikum (Hi)
Dear All
How can i show the first item in the list as selected item when user click on the list. Right now when user click the list the list shows the last item in the list as selected or highlighted. Furthermore if the list item have large no of value and a scroll bar along with it then the list scroll to last item when user click it with mouse. I want that when user click the list item with mouse list should show the first item as highlighted.
Take Care
Allah Hafiz

Hi!
You can set list "initial value" using When-Create-Record trigger.
I.g.
:<Block_name>.<list_item_name> := Get_List_Element_Value('<Block_name>.<list_item_name>', 1);

How to execute separate code for the first item inside forloop?

Hi All,
I would like to execute "foreach (SPListItem item in items)". Here, for the first item i want to execute separate code and all other items should execute another code. How to achieve this?

Basic .NET question... not really a SharePoint question...
Option one, create a counter:
int myCounter = 0;
foreach (SPListItem item in items)
if (myCounter == 0)
else
myCounter++;
Option 2 - use a for loop
for (int i = 0; i < items.count; i++)
SPListItem item = items[i];
if i == 0)
else
Mike Smith TechTrainingNotes.blogspot.com
Books:
SharePoint 2007 2010 Customization for the Site Owner,
SharePoint 2010 Security for the Site Owner

Get the first item value of previous record in a multi record block

Hai,
I have a multi record block with four items.I should get the first item value of the previous record so that I can increment its value in the current record.
Thanks.........

If you want a distinct value in each row or to be able to retrieve the records in the same order they were written then you should use a sequence.
If you want to retrieve the records in the same order they were created in the block then you will need a diffferent solution to the one you outline here since a user could enter a new record between two others.
I posted this a while back in response to someone who was using a sort_key item and resetting it for each row when a new record was inserted:
If you make the sort_key bigger then you have much more room to insert new rows in between existing rows without having to reset all the sort_keys.
Eg. you have rows with sort_keys of 129282000000000000 and 129283000000000000 (you can have more zeros if you want) and you want to insert a row in between. if you're using oracle forms then the user would have to click on the first of these rows and then do 'insert'. in your insert process you would store the sort keys of the current record and the one below, create a blank record in between and set the sort_key of that record to the average of the other two. you will be able to insert many new rows in between the original 2 before running out of space in the sort_key field.
the method above is not sufficient, there are some other cases to consider:
1) when the user is on the last record of the block then you will just create a new record with sort_key set to a greater number than the row before. you can have the sort_key defined as number(38) and to safely allow you to enter 1000 rows each new row would normally be 10E33 greater than the previous one.
2) when the user is entering the first record then just set the sort_key to 10E33.
3) on the off-chance that you do insert a great number of records and cannot insert another in between then you would need to alert the user, process the records so that the sort_keys are evenly spaced and requery the block. this processing could be scheduled nightly to make this eventuality even less likely.
4) make sure the user cannot run the default 'clear_record' procedure. this would break my method as well as yours!
James.

First item of itemrenderer created twice?

Similar Messages

Maybe you are looking for