Conditional data binding

Similar Questions

• Could not send an individual column by using a data binding

  Hello
  I have a data set (testdatalink) link to access the table of database SQL Server reading
  now in my Toad or sql prompt I quried the table using this data binding
  
  Select * from sqltable@testdatalink;
  With this I have no problem
  But when I ask a specific column as
  Select col1 from sqltable@testdatalink;
  or when I try to update a column
  It says COL1 IS not a VALID IDENTIFIER;
  My final requirment is to update a column in this table of SQL server based on certain conditions.
  
  I tried to give a name, alis, but no use.
  Please let me know if is there any method of reference in the columns of the table
  
  Thanks in advance
  
  Published by: DharV on August 10, 2011 02:45

  If the columns are lowercase in Sukkelserver, you must

  Select 'col1' of reading @...

  --------
  Sybrand Bakker
  Senior Oracle DBA

• How to use the data binding on a cluster?

  Hello

  I just discovered the data binding and used it on some primitive controls/indicators. I love the cleanliness of the approach (no additional querying and son required!)

  Now, this page gives to think I can link a cluster with a shared too variable. However, when I right click-> properties, I see that the tabs appearance and Documentation (and I know that I did not accidentally choose an element inside the cluster, because (1) there is a typedef strict, and said the title of (2) 'The Cluster Properties' dialog box). Where can I find the data binding tab?

  Thank you

  Hi JKSH,

  What you're doing is possible if you make the file .ctl as the definition of type rather than a strict definition of type. With a strict definition of type all instances of the same .ctl file link that is why you cannot use data binding.

• Symbol of the triangle in data binding

  Hello

  I'm lie some elements of graphical interface directly to the shared Variables by using the GUI element data binding property. However, there is a small triangle at the top right of the element symbol, it shows the status of the connection. If it is properly connected, it green beds. How can I hide this symbol?

  

  Oh, sorry, I found it. It is under the visible elements.

  

• Data binding occurs after onAdded() in CellRenderer?

  Hi all, I extend the qnx.ui.listClasses.CellRenderer for my TileList. I noticed that sometimes the this.data would be null in my overridden onAdded() function.

  After some tests, I realized that if I use a timer to check this.data seconds later, it would be filled with the correct data, it seems that the data binding happens a moment after the onAdded() function is called.

  I'm happy to rely on the timer to the time delay, but someone has a better solution? Is there something else I should listen to instead of according to onAdded()?

  Hey,.

  This kind of thing makes me forget all sleep haha clearly that I don't SLEEP much at all!

  OK, so I think I got the fix for this. instead of simply relying on onAdded() method that we must look in the drawLabel() method. in the contstructor this time, we do the new CheckBox object where our customization starts later with so we don't have duplicates of this object that is created each time the drawLabel method is called. instead of making the bulk of the work in the onAdded method, we will just to remove the object from the label that is displayed via the cell rendering engine. After that when the drawLabel() method is called, which is when we do our customization. mine includes a checkbox just to test. then we finally remove our object as usual in the onRemoved() method.

  Here's the code for update for the rendering engine:

  package
  {
      import flash.events.Event;
      import flash.events.MouseEvent;
      import flash.text.TextFieldAutoSize;
  
      import qnx.ui.buttons.CheckBox;
      import qnx.ui.buttons.LabelPlacement;
      import qnx.ui.listClasses.AlternatingCellRenderer;
      import qnx.ui.listClasses.List;
      import qnx.ui.text.Label;
  
      public class MyCustomCellRenderer extends AlternatingCellRenderer
      {
          /*
          * Place the object out here so that other methods can
          * access it
          */
          private var newCheckBox:CheckBox;
  
          public function MyCustomCellRenderer()
          {
              super();
  
              /*
               * Add the checkbox here so we dont keep re-adding a check box
               * whenever the onAdded method is called. other wise there
               * would be a lot of objects for checkbox
              */
              newCheckBox = new CheckBox();
          }
          override protected function onAdded():void
          {
              super.onAdded();
  
              /*
               * Do not want to use the label object at all. we want
               * to fully customize our cell renderer. for some reason
               * the label object is not considered a child object
               * when the drawLabel method is called so we must
               * removed it in this method where it is considered a
               * child object
              */
              removeChild(label);
          }
          override protected function drawLabel():void
          {
              if (this.data)
              {
                  /*
                   * Sometimes this function is called prematurely when there
                   * is no data object available and it is null so we only
                   * do our custom label when there is a data object available
                  */
                  newCheckBox.width = 500;
                  newCheckBox.label = this.data.label;
                  newCheckBox.labelPadding = 10;
                  newCheckBox.labelPlacement = LabelPlacement.RIGHT;
                  newCheckBox.setPosition(10,10);
  
                  addChild(newCheckBox);
              }
          }
          override protected function onRemoved():void
          {
              super.onRemoved();
  
              /*
              * Remember to remove the checkbox object
              */
              removeChild(newCheckBox);
  
          }
      }
  }
  

  I tested it on a list of single column and also a tilelist component and how it works to 100%. Let me know if I missed something. happy you raised this point! Good luck!

• Problems with the removal of the data binding Flex to use Air 14

  Hello

  I was wondering if anyone had an optimal solution to replace the Flex Air 14 data binding classes. I can't merge the Flex and Air SDKS more for all liaison managers need to be replaced. Everybody runs into this problem yet? Automated link generation and manipulation was the best feature of Flex and now that it's broken it creates huge problems for me.

  It is Air of mobile and desktop applications. They still build everything simply no work of event management.

  See you soon,.

  Pete

  I forgot that I myself have solved last Dec. So basically from what I can tell that the precompiler is either no [Bindable] conversions so you must manually create the getters and setters for your model when it changes. I hope this helps anyone who may run into the same problem. There is literally no documentation on this wheres.

  i.e.

  [Bindable]

  public var username: String;

  becomes

  private var _username: String;

  [Bindable (= "propertyChange" event)]

  public function get username (): String

  {

  return this ._serviceState;

  }

  public function set username(value:String):void

  {

  var oldValue:Object = this ._username;

  If (oldValue! == value)

  {

  This ._username = value;

  If (this.hasEventListener ("propertyChange"))

  this.dispatchEvent (mx.events.PropertyChangeEvent.createUpdateEvent (Thi, "username", oldValue, value));

  }

  }

  You must also make sure that what ever class contains this property implements IEventDispatcher and has the following functions:

  	//	Implementation of IEventDispatcher
  	//
  	private var _bindingEventDispatcher:flash.events.EventDispatcher =.
  		new flash.events.EventDispatcher (flash.events.IEventDispatcher (this));
  	/**
  	* @inheritDoc
  	*/
  	public function addEventListener (type: String, listener: Function,)
  									useCapture:Boolean = false,
  									priority: int = 0,.
  									weakRef:Boolean = false): void
  	{
  		_bindingEventDispatcher.addEventListener (type, listener, useCapture,
  			priority, weakRef);
  	}
  	/**
  	* @inheritDoc
  	*/
  	public function dispatchEvent (event:flash.events.Event): Boolean
  	{
  		Return _bindingEventDispatcher.dispatchEvent (event);
  	}
  	/**
  	* @inheritDoc
  	*/
  	public void hasEventListener(type:String):Boolean
  	{
  		Return _bindingEventDispatcher.hasEventListener (type);
  	}
  	/**
  	* @inheritDoc
  	*/
  	public void removeEventListener (type: String,)
  										Listener: Function,
  										useCapture:Boolean = false): void
  	{
  		_bindingEventDispatcher.removeEventListener (type, listener, useCapture);
  	}
  	/**
  	* @inheritDoc
  	*/
  	public void willTrigger(type:String):Boolean
  	{
  		Return _bindingEventDispatcher.willTrigger (type);
  	}

• ADF table with checkbox refresh data binding problem

  Hello.
  
  I use JDeveloper 11.1.1.3. I need to use the table with checkboxes in each row of the table in my project. I use VO with transitional 'Selected' attribute that has a boolean type.
  Everything works well, wait one thing:
  When you click checbox with valueChangeListener and try to get the selected line in the managedBean you won't get any selected lines. After selecting second maaged bean evil shows that 1 single line is selected. It's my managedBean method:
  
  public void SelectCountyClick (ValueChangeEvent valueChangeEvent) {}
  
  DCIteratorBinding it = ADFUtils.findIterator (ITERATOR_NAME);
  
  int selectedRowCount = 0;
  RowSetIterator laughs = it.getRowSetIterator ();
  Line r = rit.first ();
  If (r! = null) {}
  If ((Boolean) r.getAttribute ("Selected"))
  selectedRowCount ++;
  }
  
  While (rit.hasNext ()) {}
  r = rit.next ();
  If ((Boolean) r.getAttribute ("Selected"))
  selectedRowCount ++;
  }
  
  System.out.println ("selected all THE LINES:" + selectedRowCount);
  
  
  }
  
  I tried to change this event to the client event, I got the line number, I put 'true' or 'false' to the code data binding, but whenever I can't correct data after the value change event.
  
  Please help me.
  
  The latest idea is updated databing after click of checkbox, I think. Please help me.
  
  Thank you!

  You must go through the concepts of life cycle of page ADF. In simple terms the Boolean value in the model is not defined in valueChangeListener. Try adding (.processUpdates) valueChangeEvent.getComponent (FacesContext.getCurrentInstance ()); on top of your listener method and see the effect.

  Reference:
  http://docs.Oracle.com/CD/E15051_01/Web.1111/b31974/adf_lifecycle.htm

• Data binding will not be able to detect...

  I need help with my code.

  I got this error: data binding will be not able to detect the assignment of "chartData".

  Tagged 'HERE '.

  Code:

  <? XML version = "1.0" encoding = "utf-8"? >

  < s:Application ' xmlns:fx = ' http://ns.Adobe.com/MXML/2009 "

                          xmlns:s=" Library://ns.Adobe.com/Flex/spark "applicationDPI =" " 160 "

                          xmlns:mx=" Library://ns.Adobe.com/Flex/MX "

  applicationComplete = "applicationCompleteHandler (event)" " >

  < fx:Script >

  <! [CDATA]

  Import be.aboutme.nativeExtensions.udp.UDPSocket;                   

  Import mx.events.FlexEvent;             

  private var udpSocket:UDPSocket;

  public var NewValue:Object;      

  public var Value: String;

  [Bindable]                

  private var chartIndex:int = 0;

  private var chartData:ArrayCollection = new Collection ArrayCollection;

  Import mx.collections.ArrayCollection;

  protected function applicationCompleteHandler(event:FlexEvent): Sub

  {

                             udpSocket = new UDPSocket();

  udpSocket.addEventListener (DatagramSocketDataEvent.DATA, udpDataHandler);

  udpSocket.bind (1000);

  udpSocket.receive ();

  }

  protected function udpDataHandler(event:DatagramSocketDataEvent): Sub

  {

  var Value: String = event.data.readUTFBytes (event.data.bytesAvailable);

  if (Value)

  {

  NewValue = Value;

  Test.appendText (Value);

  chartData.source [chartIndex] = NewValue;

  }

  on the other

  {

  NewValue = 0;

  }

  }

  []] >

  < / fx:Script >

  < fx:Declarations >

  <! - Place non-visual elements (e.g., services, items of value) here - >

  < mx:SolidColorStroke id=" s3 "color =" " 0x33F400 "poids = » 1 " />

  < / fx:Declarations >

  < s:layout >

  < s:VerticalLayout " paddingBottom =" 10 "paddingLeft =" 10 "paddingRight =" 10 "paddingTop =" 10 " " / > ""

  < / s:layout >

  < s:Scroller " width = ' 100 % "height =" " 100 % " >

  < s:VGroup " width = ' 100 % " >

  < s:TextArea id=" Test "width =" " 100% "height =" " 49 "editable = » faux " />

  < s:HGroup " width = ' 100% " >

  < / s:HGroup >

  < / s:VGroup >

  < / s:Scroller >

  < mx:CartesianChart id=" LineChart "width =" " 100% "height =" " 207 "cacheAsBitmap =" true " "

                                       cachePolicy=" on "paddingLeft =" " 5 "paddingRight = » 5 " >

  < mx:verticalAxis >

  < mx:LinearAxis id=" vAxis "alignLabelsToInterval =" " true "autoAdjust =" " fake "

                                              baseAtZero=" fake "interval =" " 16 "maximale = » 256 "minimal = » 0 "padding = » 1 " />

  < / mx:verticalAxis >

  < mx:verticalAxisRenderers >

  < mx:AxisRenderer axe = » {vAxis} "canDropLabels =" " true "color =" " 0xF8F8F6 "fontSize =" 8 '' / >

  < / mx:verticalAxisRenderers >

  < mx:horizontalAxis >

  < mx:LinearAxis id=" hAxis "alignLabelsToInterval =" " true "autoAdjust =" " fake "

  " baseAtZero = ' fake "interval =" " 25 " />

  < / mx:horizontalAxis >

  < mx:horizontalAxisRenderers >

  < mx:AxisRenderer axe = » {hAxis} "canDropLabels =" " true "color =" " 0xF8F8F6 "fontSize =" 8 '' / >

  < / mx:horizontalAxisRenderers >

  < mx:fill >

  < mx:SolidColor " color = ' 0x231F20 " " / > "

  < / mx:fill >

  < mx:backgroundElements >

  < mx:GridLines " cacheAsBitmap = ' true "cachePolicy =" " on "gridDirection =" " horizontal " >

  < mx:horizontalStroke >

  < s:SolidColorStroke " alpha = ' 0.2 "color =" 0xD4D4D3 "weight =" 0 " " / > "

  < / mx:horizontalStroke >

  < / mx:GridLines >

  < / mx:backgroundElements >

  < mx:series >

  HERE-> < mx:LineSeries id=" recordGraph "cacheAsBitmap =" " true "cachePolicy =" " on "                  

                                              dataProvider=" {chartData} "form = » curve of "lineStroke =" " {s3} "

                                              sortOnXField=" fake " />

  < / mx:series >

  < / mx:CartesianChart >

  < / s:Application >

  You must make chartData bindable. Follow these steps:

  [Bindable]

  private var chartData:ArrayCollection = new ArrayCollection collection;

• Data binding

  Under what circumstances the following does not trigger the events of data binding:

  < ns:Button id = "btn1" enabled = "{cnt1.selectedIndex > = 0}" / >

  CNT1 is based on that:

  package

  {

  [Bindable]

  SerializableAttribute public class DataGridContainer extends DataGridContainerBase

  {

  public function get () of the grid: DataGridBase

  {

  return _grid.

  }

  public function get selectedIndex (): int

  {

  trace (_grid. SelectedIndex);

  Returns - 1;

  Return _grid.selectedIndex;

  }

  override protected function createGrid (): DataGridBase

  {

  super.createGrid ();

  }

  }

  }

  Thank you

  Probably still.  It seems that selectedIndex cannot change?

• Data binding for Idiots (myself)

  Hey everybody,

  I was asked to create a form that is much more complex than anything I've done in the past. I just wanted to ask a few questions to the experts here before I'm begins, to make sure that I don't make any huge mistakes.

  The complexity of the form lies in the multiplicity of repetitive nested subforms, the fact that it is three forms (which projected form depends on a selection in a drop-down list), and the fact that the form must be designed to export its data such as xml.

  The extent of the building, the form will, I'm comfortable with everything except for export in XML format. I've done a few times, but I'm not sure that the assumptions I made are correct. I tried to read the help files, but I'm not sure I want to come.

  Roughly, I use a ton of subforms to ensure that the layout of the form works dynamically. I don't want all these subforms is displayed in the xml import. The way I do it is to affect the data binding on the subforms "No data binding." Does have an impact on the way that data is stored in the form? If I don't want the value of a field to export, I can put it is linked to "no data binding", or this issue will prevent the values being recorded?

  My last question concerns the link "Use name". So far, in forms I made so that all fields have different names. This form is so large and has so many similar elements, it would be useful to resue field names in different areas of the form. For example, two versions of the forms has a section for the associated addresses. The fields in these sections are the same. I can name them the same thing, as long as they are in different subforms? Or it will cause a conflict when the export/backup.

  Sorry for the long post. In short:

  (1) what the "no data binding" binding afftect data have on subforms and fields, regarding the data saved and exported data? Is there any 'traps!"that I should be aware of?

  (2) what are the guidelines I should follow to make sure that I do not come across all naming conflicts? I just need brother fields are not named the same, or all names are separate?

  I'd appreciate any help that you guys might be able to offer.

  -Scott

  Scott,

  (1) no mandatory date refers to a form object is not included in the exported XML file. Data binding has no effect during the recording of data when you save a form, the form contains the data.

  (2) for me, the #1 rule is use a schema and a schema binding. It is worth the initial investment in time. What you see in the diagram, this is what you see in the output data, given the form object is bound to the schema. You can link an element of single to multiple form objects schema if you need to re - use data through forms, too. Rule #2, for me, is to explicitly set the names sub-shape to simplify the schema binding and to avoid name collisions.

  I have attached a very simple form (with the built-in schema), schema, and the exported xml file to show.

  Steve

• Data binding does not seem to work

  I have a report with 3 queries - a mother and two children. (In fact, there are more than 2 children, but only 2 of them are at the origin of the problem.) The current version of the report uses frames/repetition, overlapping frames and fields for each request of the child, which makes it almost impossible to change - and I need to change.
  
  I wrote a query that joins the two children in a single request. It works in SQL * more when I add the where clause that expected be added by data - links, but when I run the report I get the same results as when I run it in SQL * Plus without the data where a clause link. So it seems data links do not work for this game of parent/child of queries.
  
  No idea why? (Reports 6i)
  
  It is certain that data binding is the problem. I did the new 'child' an independent query, adding where clause to the query and deletion of data links between the parent and the child, and that is work - at least for the case where the parent returns a single record. I really need that data links work well, then re - asks the child for each parent. On the other hand, report editor showed a strange icon on the request of the child. It seemed to me the icon of data link with a slash through it--and he disappeared when I deleted the data bindings, so I'm sure that the icon showed that data links were not working. He didn't explain why.
  
  Published by: user6931915 on December 14, 2010 11:39

  Hello

  You earn this icon? : http://www.oracle.com/webapps/online-help/reports/10.1.2/topics/htmlhelp_rwbuild_hs/rwwhthow/whatare/dmobj/qa_nonlnkqry.htm

  Concerning

• Two-way data binding on custom component

  Hi, maybe there is already a post for this question, but the search engine seems to be broken...

  I found many many examples of two-way data binding on a text element, but I want to use it on a custom component.

  DS I want to do:

  < myPackage:MyComponent myLabel="@{myModel}"/ >

  MyComponent is a group that contains a label, among other things.

  That the label displays the string in the var myLabel.

  A click on the MyComponent calculates a new value to myLabel.

  So I want the label to display this new value AND the original myModel to get the new value also (thanks to the @).

  Is this possible? Do I have to add a Binding tag with a name of special event on var myLabel?

  It's true!

  > I didn't THAT XML was "a collection of objects to structure complex, with variables of class data types the.

  From a conceptual point of view, it's the same thing. You can consider the upper as Employee objects XML nodes and child nodes as WorkHistory objects. And you can think of big children nodes as properties of WorkHistory.

• "Data binding will be not able to detect the transfer..." "while [bindable] is set.

  Hello world

  Thank you for taking some time to try to help me.

  I get the warning "data binding will not be able to detect the assignment... "for a

  Collection ArrayCollection all [bindable] properties are set correctly - at least I think... ;-)

  [bindable]
  private var allParties:ArrayCollection = new ArrayCollection();
  

  and then, later:

                 <s:DropDownList id="dropDownList_party_sprecher1"
                                                          [...]
                                     labelField="_internal_partyname">
                      <s:AsyncListView list="{allParties}"/>
                 </s:DropDownList>
  

  The elements of the array collections are a custom class to the mine, which has been automatically

  generated by the php flash builder Gizmo service. This class is also marked as [bindable]:

  [Bindable]
  public class Parties extends _Super_Parties
  {
       [...]
  }
  

  and the extended with class

  [Managed]
  [ExcludeClass]
  public class _Super_Parties extends flash.events.EventDispatcher implements com.adobe.fiber.valueobjects.IValueObject
  {
  [...]
  
       [Bindable(event="propertyChange")] 
      public function get idx() : int    
      {
              return _internal_idx;
      }    
       [Bindable(event="propertyChange")]
      public function get partyname() : String    
      {
              return _internal_partyname;
      }  
  [...]
  }
  
  As I understand it, the [Managed] makes the whole class 
  [bindable] as well and the getters are marked too.
  I've put the [bindable] keyword anywhere I could imagine 
  but it doesn't help at all.
  In principle I wouldn't mind the warning, but the 
  dropdown-list doesn't work.
  
  Please let me know if you need any more information,
  
  Thanks
  
  
  
  

  Try not to allParties

• FlexGlobals.topLevelApplication Gumbo data binding issues

  Hello

  What is the recommended way to bind a data source for a subitem to a collection that can be linked to the location of the top-level application.

  3, for this I would use {Application.application.instance_of_bindable_variable}, now I get a warning saying that the data binding will not be able to detect the assingments to {FlexGlobals.topLevelApplication.instance_of_bindable_variable}

  so, how to bind a data source for a subitem a variable instantiated at the Application level, in Flex 4?

  Thank you

  JED

  My bad, instead of Application, use the name of your application MainApp(FlexGlobals...). someProperty

  Alex Harui

  Flex SDK Developer

  Adobe Systems Inc..

  Blog: http://blogs.adobe.com/aharui

• A question about data binding

  Hi all

  Data binding is easy to use during development. I often set new directive public property, but I find that I can't control the treatment when the property value changes. I learned that there is a propertyChange event when the property is bindable. If a property is set at 29, and I want to be bordered to 30 in the background. How can I achieve this?

  Thank you

  Hi yancaoshi.  I don't know if I understand the question, so if I miss just let me know.

  You can change the value of a property is the value when set using get/set functions.

  private var _value:Number = 0;

  [Bindable]

  public void value(v: Number): void

  {

  _Value = v;

  }

  public function value(): number

  {

  return _value;

  }

  A regular get/set the installer looks something like the code above.  It creates a property named 'value' that can be accessed as if it was declared as a public var.  The difference is that you can add logic to the set function.

  [Bindable]

  public void value (v: Number): void

  {

  stupid logic to raise 29 and 30

  If (v == 29) {}

  _Value = 30

  } else {}

  _Value = v;

  }

  }

  Now, when someone calls the following code, the value of the 'value' property is actually on 30 and anyone "linked" to this property will get the value 30.

  The following documents may be useful:

  http://www.flexafterdark.com/docs/ActionScript-GetSetFunctions

  http://www.flexafterdark.com/docs/Flex-binding

  Let me know if this is helpful to all.

  Ben Edwards