Binding to array elements via currentRow

I know, I know, this is not really a JSC question but a JSP one, but I will ask anyway!
I have a datatable bound to tableLine[]. One property of tableLine is myArray - which is, surprise suprise, an array. I would like myArray[0] to show up in the first datatable column, myArray[1] in the second, etc. I tried #{currentRow['myArray[0]']}, but it does not work. The alternative would be to have a rather cumbersome mechanism to convert myArray[xx] into myArrayxx properties, but that really does not look good.
Any ideas?
Thanks,
Luca

I was hoping someone else knew - I have no clear answer, but can offer a pointer to a value-binding article you might be able to use:
http://java.sun.com/developer/EJTechTips/2004/tt0923.html#1
and chp 18 on Binding Component Values :
http://java.sun.com/j2ee/1.4/docs/tutorial/doc/index.html
(see diagram 18-8??)
Sorry I don't have more... but hopefully the trick is in there...
v

Similar Messages

Binding to Array element using BindingUtils

I have an arraycollection that would have (say) 5 elements in it. Then I have a component with a property that would need to bind with one of the elements in the array. Which element does it gets bound to, is determined at runtime by a function. How would I do that in Actionscript? I am stuck using the BindingUtils.....
e.g. I need to bind the dataProvider property of my component to arr[0] for one instance and to arr[4] for another instance.

You may not be able to directly set the indexed value.
Try some thing like this.
Add a property that returns the indexed value.
Ex. if you ArrayList objets are of type "String"
int index = 5;
public String getMyValue(){
return w.get[index]
Now your value binding would look something like
#{SessionBean1.myValue}
BTW, if you want to access different index, create another method
public void setIndex(int index){
this.index = index;
- Winston
http://blogs.sun.com/roller/page/winston?catname=Creator

Nested IPE (In Place Element) usage when accessing Cluster/Array data via DVR

I am sharing data across several VIs and loops via a DVR, and accessing the data via a DVR IPE. The data is a cluster of arrays. The diagram below (VI attached) illustrates the structures invloved, but not the structure of the application.
(The diagram above does not include initialization of the arrays, as it is intended only to illustrate the Cluster1 data type. Array lengths could be 100.)
The DVR (DVR1) is passed to multiple VIs of the application at startup.
Each VI executes loops that either read or write particular elements of each array (fArray1 or fArray2).
I believe the DVR IPE (B1-DVR) provides blocking so that only one task can modify the data (Cluster1) at any time.
Case 1 illustrates how I currently WRITE to array elements. The outer IPE (block B1) is rolled into a VI (not shown) that takes DVR1, Index, and Value as inputs.
Cases 2 - 4 illustrate 3 additional methods that remove one or both of the inner IPEs (B2-Cluster and B3-Array).
Case 2: IPE B3 (Array Index/Replace Elements) is replaced with a non-IPE 'Replace Array Subset'.'
Case 3: IPE B2 (Unbundle / Bundle Elemnts)' is replaced with a non-IPE cluster 'Unbundle'/'Bundle'.
Case 4: removes both B2 and B3.
I implemented case 1 a long time ago. When I had to do the same thing again recently, I did case 4. When I stumbled across my earlier implementation, I was a bit suprised
Which of the 4 cases should take the least time (or resources) to execute? I think case 4 has as few array allocations as any of the other 3.
The attached image did not capture the Buffer Allocation marks, so I marked the ones that differed with a red "B".
I am only interested in differences in how the arrays are handled, so I see no signioficant differences.
Is this one of those cases where LV doesn't need my help?
Incidently, I recently wrote a small app with shared data and decided to try FGVs to share array data. For small arrays, 10^7 iterations, and an FGV based array-element read followed by a element write, the FGV was faster. 1.2us per read/write for FGV vs 3us per r/w for an DVR/IPE based read/write (like above).
Peter
LV 2011 SP1, Windows 7 64-Bit
Attachments:
IPE.vi ‏9 KB

Option 1 is a definite no and as far as I know it has been NI's explicit intention to steer clear from it. I believe there's an idea in the IE which asks for this.
I agree that option 2 makes sense, but I don't think it should be something the user specifies. Either LV can detect it automatically or it can't, but I doubt NI would let you have an option which creates the possibility for this kind of bug.
I'm not sure, but the mark as modifier option on the IPES might be the option you're looking for. I know that it exists and I know very roughly what it does, but the documentation for it is very limited and I never actually played around with it, as usually I don't need these kinds of optimizations.
You may well be right that a new option on the IPES is desirable and you should probably add it to the idea exchange.
As for NIWeek, I'm not going this year, so I have no idea what kinds of sessions are around, but it's a great place to find people who know what they're talking about and ask them about it directly. Certain people in LV R&D would probably be ideal for this and if you ask relevant people, you might even get their names. I'm sure buying them a beer would also help to loosen their tounges. If you ask me, this type of interaction is the main value of the conference, not the sessions themselves.
Try to take over the world!

How to binding an array in javaFx

Hello fellows,
im trying to bind an array in javaFx but is not possible...
i have a problem that, in my point of view, only can be solved with a bind array.
a create some components in the scene dinamicaly and in other component (a button) a have to get this componets in the button function to manipulate them
this components that is dinamicaly created sofer some updates and can be deleted too.
i create an array that i put this components and my button recived this array, coz the array is always null (the inicial status of the array)
becouse of this i need a bindig array...
how can i do that?
or, that is an other solution?
i can get all the components in the scene of only one type (my component created dinamicaly)?

Here is example of a simple painter app where array binding is used:
import javafx.stage.*;
import javafx.scene.*;
import javafx.scene.paint.*;
import javafx.scene.input.*;
import javafx.scene.shape.*;
var elements: PathElement[];
Stage {
    title: "Simple Painter"
    scene: Scene {
        content: Group{
            content: [
                Rectangle{
                    width: 400
                    height: 300
                    fill: Color.WHITE
                    onMousePressed: function( e: MouseEvent ):Void {
                            insert MoveTo {x : e.x, y : e.y } into elements;
                    onMouseDragged: function( e: MouseEvent ):Void {
                            insert LineTo {x : e.x, y : e.y } into elements;
                Path{
                    stroke: Color.BLUE
                    elements: bind elements
}

Bind Variable Arrays

Is is possible to set up a Bind Variable array. If it is possible, how do you do it?
I want to set up an array of flags in one region on the page, and check those flags in another region on the page (report region). Any help is greatly appreciated.
Sharon

Sharon,
I'm confused. You talk about visual elements on a page (array of flags) and then you somehow already know you want to treat this as bind variable array.
Can you describe what you're trying to achieve, and not so much how you want to acheive it?
Joel

How do I programmatically modify array element sizes?

Hi All,
I have a quick question about modifying the size of array elements. Hopefully someone can help, because I am at a dead end!
I am logging some intensities from a Fibre Array using a camera. For calibration of the system, I acquire an image from the camera, click points on the image to divide it into areas of interest. I overlay my image with a grid showing the regions of interst - for example a 4x6 array. I then have to select the fibres - or ROIs - I want to log from.
I have a cluster type-def ( a number and a boolean) to specify the fibre number and to turn logging from that fibre on/off. I overlay an (transparent) array of this typedef over my image to correspond with the regions of interest. So here's my problem - I want to modify the dimensions of the array so each control matches my ROI. I can resize the elements by rightclicking on the elements on the frontpanel, but can't find a way to do it programmatically. The Array Property Node>>Array Element>>Bounds won't 'change to write'...thats the first thing I tried.
Its really only important that the elements align with my ROIs - so programmatically adding in gaps/spacings would also work for me...but again I can't figure out how to do this! I've attached a screenshot of part of my image with array overlaid to show you all exactly what my problem is.
Thanks in advance for you help,
Dave
PS I am running Labview 8.6 without the vision add on.
Solved!
Go to Solution.
Attachments:
Array_Overlay.png ‏419 KB

Here's my cheat (and cheap?) way If you want to get fancy and center the numeric and boolean indicators, you could add spacers on the north and west sides, too.
Attachments:
ClusterSpacer.vi ‏13 KB

How can I display all results of a array element in a TS2.0 NumericArrayMeasurement in a single report line?

TestStand2.0 generates for each result property ( data, limits, status...) of each array element in a NumericArrayTest an extra line in the test report.
How can I change this to display all result properties of one array element in a single line?
How can I reduce the spaces between the property name and its value in the report?
How can I delete the message: "Measurement[x]" and display only the Measurement Alias (named in the Edit Limits menu)?
This means I like to change my report from:
Measurement[0] (ADC1):
Data: 5000
Status: Passed
Measurement[1] (AD
C2):
To:
ADC1: Data: 5000 Status: Passed
ADC2: ...

Hi,
What you can do, is use the Override Callbacks for Modify the Report that is Generated.
Also you can also change the report sequence 'reportgen_txt.seq' to achieve the desired affect. If you go for modifying the report sequence then copy this to the User folder and then make your changes.
In the Resources Library you can find simple examples were the report has been modified by either using the Override Callbacks or by modifying the actual sequence.
One other item in the Report Options you will have to set the 'Select a Report Generator for Producing the Report Body' control to use the Sequence instead of the DLL.
Hope this helps
Ray Farmer
Regards
Ray Farmer

How to use XSLT for mapping feild names one by one to array element

I have a XSLT case to map all the attributes feild name(not value) which has no child to the target, which is array loop.
I give an sample below.
source:
<Items xmlns="http://www.example.org/sample">
<SourceSystem>SourceSystem2573</SourceSystem>
<TimeStamp>2010-01-17T20:54:08.234</TimeStamp>
<Item>
<ID>2574</ID>
<Type>2575</Type>
<Name>2576</Name>
</Item>
</Items>
source XSD like:
 <element name="Items" type="tns:ItemsType"></element>
 <complexType name="ItemsType">
 <sequence>
 <element name="SourceSystem" type="string" maxOccurs="1"
 minOccurs="1">
 </element>
 <element name="TimeStamp" type="dateTime" maxOccurs="1"
 minOccurs="1">
 </element>
 <element name="Item" type="tns:ItemType"
 maxOccurs="unbounded" minOccurs="1">
 </element>
</sequence>
 </complexType>
<complexType name="ItemType">
 <sequence>
 <element name="ID" type="string" maxOccurs="1"
 minOccurs="1">
 </element>
 <element name="Type" type="string" maxOccurs="1"
 minOccurs="1">
 </element>
<element name="Name" type="string" maxOccurs="1"
 minOccurs="1">
 </element>
</sequence>
 </complexType>
target need to be like:
<ns1:AttributesCollection>
<ns1:Attributes>
<ns1:fieldname>SourceSystem</ns1:fieldname>
</ns1:Attributes>
<ns1:Attributes>
<ns1:fieldname>TimeStamp</ns1:fieldname>
</ns1:Attributes>
<ns1:Attributes>
<ns1:fieldname>ID</ns1:fieldname>
</ns1:Attributes>
<ns1:Attributes>
<ns1:fieldname>Type</ns1:fieldname>
</ns1:Attributes>
<ns1:Attributes>
<ns1:fieldname>Name</ns1:fieldname>
</ns1:Attributes>
</ns1:AttributesCollection>
target XSD:
<xs:element name="AttributesCollection" type="AttributesCollection"/>
<xs:complexType name="AttributesCollection">
<xs:sequence>
<xs:element name="Attributes" type="Attributes" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="Attributes">
<xs:sequence>
<xs:element name="fieldname" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="100"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
</xs:sequence>
</xs:complexType>
I know we can use local-name() to get the tag/field name,
but I have not idea how to get these leaf field names one by one and then mapping to every array elements.
I tried whole day but no successful
Does anyone have some idea?
Thanks very much!
Keith
Edited by: user1065212 on 17-Jan-2010 22:50
Edited by: user1065212 on 17-Jan-2010 22:53
Edited by: user1065212 on 17-Jan-2010 22:59

can you paste source xsd and the correct xml output, the current one isn't really valid
<ID>2574</TotalNumOfItems>

How to bind a UI element to the context

Hi Experts,
 I have a problem binding UI element to the context. In my code i have to create TabStrips dynamically and under this tabstrip number of UI elements would be there. For this i have a code like this..
IWDTransparentContainer theActionContainer =(IWDTransparentContainer)view.getElement("RootUIElementContainer");
 IWDTabStrip ts = (IWDTabStrip) view.createElement(IWDTabStrip.class,"TabStrip");
 IWDTab tab1 = (IWDTab) view.createElement(IWDTab.class,"Tab1");
 IWDInputField in = (IWDInputField) view.createElement(IWDInputField.class,"in");
 IWDCaption header1 = (IWDCaption) view.createElement(IWDCaption.class,"Header1");
 header1.setText("Tab1");
 tab1.setContent(in);
 ts.addTab(tab1);
 IWDTab tab2 = (IWDTab) view.createElement(IWDTab.class,"Tab2");
 IWDInputField in2 = (IWDInputField) view.createElement(IWDInputField.class,"in2");
 IWDCaption header2 = (IWDCaption) view.createElement(IWDCaption.class,"Header2");
 header2.setText("Tab2");
 tab2.setHeader(header2);
 ts.addTab(tab2);
 theActionContainer.addChild(ts);
when i run this code it is giving following exceptions..
The initial exception that caused the request to fail, was:
 com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Property 'value' of AbstractInputField with id 'in' in view 'LoginView' must be bound to the context
 at com.sap.tc.webdynpro.clientserver.uielib.standard.impl.AbstractInputField.getValue(AbstractInputField.java:1260)
 at com.sap.tc.webdynpro.clientserver.uielib.standard.uradapter.InputFieldAdapter.getValue(InputFieldAdapter.java:582)
 at com.sap.tc.ur.renderer.ie6.InputFieldRenderer.render(InputFieldRenderer.java:56)
 at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:435)
 at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:134)
 ... 63 more
com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Property 'value' of AbstractInputField with id 'in' in view 'LoginView' must be bound to the context
 at com.sap.tc.webdynpro.clientserver.uielib.standard.impl.AbstractInputField.getValue(AbstractInputField.java:1260)
 at com.sap.tc.webdynpro.clientserver.uielib.standard.uradapter.InputFieldAdapter.getValue(InputFieldAdapter.java:582)
 at com.sap.tc.ur.renderer.ie6.InputFieldRenderer.render(InputFieldRenderer.java:56)
 at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:435)
 at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.RenderManager.render(RenderManager.java:134)
 at com.sap.tc.ur.renderer.ie6.TabStripRenderer.renderTabStripItemContentFragment(TabStripRenderer.java:1867)
 at com.sap.tc.ur.renderer.ie6.TabStripRenderer.renderTabStripFragment(TabStripRenderer.java:838)
From these exceptions what i understood is, i need to bind these UI elements to context.
 Can any body tell me how to bind a UI element to the context if I understood the exceptions correct..
Thanks in Advance,
Murthy.

HI,
lets say Ctx is your context attribute,
IWDAttributeInfo attrInfo = wdContext.getNodeInfo.getAttribute("Ctx");
then , as per your code,
IWDInputField in = (IWDInputField) view.createElement(IWDInputField.class,"in");
in.bindValue(attrInfo);
if your contex attribute is child of some other node then do like this,
IWDAttributeInfo attrInfo = wdContext.getNodeInfo.getChildNode("SalesOrder",0)getAttribute("Ctx");
//this is when Ctx is child of node SalesOrder, and we are taking Ctx from its 0th element
then ,
IWDInputField in = (IWDInputField) view.createElement(IWDInputField.class,"in");
in.bindValue(attrInfo);
include this in your code ,
let me know if you face any problem
regards
reward points if it helps

Allocate array elements one at a time?

Is there a way to allocate array elements one at a time?
The following code will crash because the minimumLogIndices array is not allocated.
// get all indices where cArray[i] > minimumLog
int[] minimumLogIndices = null;
for (int i=0; i < columns; i++)
if ((cArray[i] > minimumLog))
minimumLogIndices[i] = i;
}I would like a statement like:
minimumLogIndices[i] = new(i);but this is not allowed, of course.
If I use ArrayList, then the elements can be added one at a time, but I cannot use int.
null

int[] minimumLogIndices = new int[columns];As described here:
http://java.sun.com/docs/books/tutorial/java/nutsandbolts/arrays.html
[Edit] The array will, however, have "holes" in it when cArray[i] <= minimumLog, but that's inevitable if you are using an array.

How to set the value of an array element (not the complete array) by using a reference?

My situation is that I have an array of clusters on the front panel. Each element is used for a particular test setup, so if the array size is three, it means we have three identical test setups that can be used. The cluster contains two string controls and a button: 'device ID' string, 'start' button and 'status' string.
In order to keep the diagrams simple, I would like to use a reference to the array as input into a subvi. This subvi will then modify a particular element in the array (i.e. set the 'status' string).
The first problem I encounter is that I can not select an array element to write to by using the reference. I have tried setting the 'Selection s
tart[]' and 'Selection size[]' properties and then querying the 'Array element' to get the proper element.
If I do this, the VI always seems to write to the element which the user has selected (i.e. the element that contains the cursor) instead of the one I am trying to select. I also have not found any other possible use for the 'Selection' properties, so I wonder if I am doing something wrong.
Of course I can use the 'value' property to get all elements, and then use the replace array element with an index value, but this defeats the purpose of leaving all other elements untouched.
I had hoped to use this method specifically to avoid overwriting other array elements (such as happens with the replace array element) because the user might be modifying the second array element while I want to modify the first.
My current solution is to split the array into two arrays: one control and one indicator (I guess that's really how it should be done ;-) but I'd still like to know ho
w to change a single element in an array without affecting the others by using a reference in case I can use it elsewhere.

> My situation is that I have an array of clusters on the front panel.
> Each element is used for a particular test setup, so if the array size
> is three, it means we have three identical test setups that can be
> used. The cluster contains two string controls and a button: 'device
> ID' string, 'start' button and 'status' string.
>
> In order to keep the diagrams simple, I would like to use a reference
> to the array as input into a subvi. This subvi will then modify a
> particular element in the array (i.e. set the 'status' string).
>
It isn't possible to get a reference to a particular element within an
array. There is only one reference to the one control that represents
all elements in the array.
While it may seem better to use references to update
an element within
an array, it shouldn't really be necessary, and it can also lead to
race conditions. If you write to an element that has the
possibility of the user changing, whether you write with a local, a
reference, or any other means, there is a race condition between the
diagram and the user. LV will help with this to a certain extent,
especially for controls that take awhile to edit like ones that use
the keyboard. In these cases, if the user has already started entering
text, it will not be overwritten by the new value unless the key focus
is taken away from the control first. It is similar when moving a slider
or other value changes using the mouse. LV will write to the other values,
but will not rip the slider out of the user's hand.
To completely avoid race conditions, you can split the array into user
fields and indicators that are located underneath them. Or, if some
controls act as both, you can do like Excel. You don't directly type
into the cell. You choose w
hich cell to edit, but you modify another
location. When the edit is completed, it is incorporated into the
display so that it is never lost.
Greg McKaskle

Problem in assigning value to an array element

hi all
in the following prog i am not able to assign the value to the array element
i am not getting why it is giving me error
//my program is as follows
public class ArrayTest
     static int [] intArray = new int[5];
     static int [] intArray1 = new int[1];
     intArray1[0] = 5; // this line gives error
     static char [] charArray = new char[5];
     public static void main(String args[])
          System.out.println(charArray);
          intArray1 = intArray;
}thanx in advance as usual

The problem is that you try to execute code outside a method. This can be only done in form of a variable declaration or as a static initilization block which will be executed once when the class is loaded:public class ArrayTest
     static int [] intArray = new int[5];
     static int [] intArray1 = new int[1];
     static char [] charArray = new char[5];
     static {
          intArray[0] = 5;
     public static void main(String args[])
          System.out.println(charArray);
          intArray1 = intArray;
}

How to change the color of Numeric array elements (seperately) programmatically using property node??

For example, i have 3 numeric controls, controlling 3 numeric array elements (Numeric control is connected directly to indicator). Then if i change value in numeric control 1, then the array element No.1 of numeric array should turn red when value exceeds 5. Similarly when i change num control 2 then element 2 of array should turns red when value in num control 1 exceeds 10. Similarly for 3rd element. In other words, i want to control the property of array elements individually through seperate numeric control.
I have done it for single numeric indicator.i.e. when i change numeric control's values then a single numeric indicator changes values and color (Numeric text BG property) but with array, the color of whole array changes but i want to change color of singles element of array.
Please help thanks.
Solved!
Go to Solution.

...or replace the numerics with clusters that have a numeric and a color box. make the background of the nmeric transparent and slide the color box behind the numeric. Use the color box to control the background color.
Other alternatives would use a cluster instead of the array or if your req's are really weird "roll-your-own" with a Picture control.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

How to set an array element in an object type of array??

Hi,
I have set attribute as follow:
Color[] colors;
Color[] colors = new Color[20];
colors[0] = "Red";
colors[1] = "blue";I can't compile this code. It said:
"Incompatible type -found java.lang.String but expected Colors
Could you tell me how to set an array elements when the array type is an object?

in your case, the array shouldn't be Color[] but String[] since you re intending to put strings into it
by the way, you could also use a hashmap to map a string to a color:
HashMap<String, Color> hm = new HashMap<String, Color>();
hm.put("Red", Color.RED);
hm.put("Blue", Color.BLUE);
etc.

"In initializer for 'mxmlContent', type Object is not assignable to target Array element type..."

Hi all,
So I've have built an application on flash builder 4.5 using Christophe Coenraets' tutorial "Building an EmployeeDirectory" (http://www.adobe.com/devnet/flex/articles/employee-directory-android-flex.html#articlecont entAdobe_numberedheader).
I'm getting this error message "In initializer for 'mxmlContent', type Object is not assignable to target Array element type mx.core.IVisualElement." and then the debugger highlights my code this line of my code "</s:List>" in my EmployeeDetails.mxml file. This started after I coded Part 5, Step 2 "Integrating with the Device Capabilities: Triggering the Actions". The rest of the code debugged fine.
I think it relates to Christophe's note "Note: Make sure you import spark.events.IndexChangeEvent (and not mx.events.IndexChangedEvent) for this code to compile.". I don't know where to place this
" import spark.events.IndexChangeEvent;" line of code.
Any help? Tks in advance..
Any help would be greatly appreciated. Thanks

You have a DataGrid directly inside a State element. Perhaps wrap it in an AddChild element?
More information on using states can be found here:
http://livedocs.adobe.com/flex/3/html/help.html?content=using_states_1.html

Binding to array elements via currentRow

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