Data binding (context)

Dear all,
We have created a new WebDynpro application with our own interactive form. The form holds 200 fields, and only 30 fields are required for processing in the backend (ECC).
Do we need to define 200 context fields or can we define only these 30 fields? What happens with the 170 fields not binded to the context? These fields are not necessary for our process, but the pdf will be stored in Records Management.
Kind regards,
Noë

Hi Noel,
Raja is correct about the persistence.
In essence, unbound fields are not an issue as the information stays inside the PDF
However, consider this for your scenario: If you are using a dynamic PDF (which I assume you do, because you have posted a lot about the ISR integration - and ISR forms are dynamic), there is a bug with unbound fields in dynamic PDFs that may in certain cases cause the loss of data entered in such fields when you open the form a second time after originally saving and closing it.
This bug will not be fixed until later in the year with Reader 8.
Kind regards,
Markus Meisl
SAP NetWeaver Product Management

Similar Messages

Where is detailed description of what data binding language can do?

Where in the documentation does it clearly spell out exactly what you can do with
the data binding language (the stuff between "{...}")? I'm trying to understand
what is happening in the SamplesApp, in the "repeaterTag" module, in XMLString.jsp
and repeaterTagController.jpf.
In particular, in XMLString.jsp, it references an expression like this:
<netui-data:repeater dataSource="{pageContext.xml.employee}">
I can't figure out how this is working. I can see that the "callPageFlow" tag
just before this is putting the result of "getXMLStr()" into the "xml" variable.
This string looks like this:
<employees>
<employee title=\"CEO\"><first>Mary</first><last>Smith</last></employee>
<employee title=\"President\"><first>Mark</first><last>Jones</last></employee>
<employee title=\"Vice President\"><first>Matt</first><last>Nelson</last></employee>
<employee title=\"Salesperson\"><first>John</first><last>Doe</last></employee>
<employee title=\"Office Manager\"><first>Jane</first><last>Doe</last></employee>
</employees>
This usage of the data binding language is a little unusual, but I would assume
it's documented somewhere, right?

I had already read that description. It has just about one sentence that covers
the ability to reference elements of an XML string, but without giving any usable
details. I was already convinced that this and direct variable references were
worth avoiding, I just wanted to understand the extent of the available features
first. I guess the lack of any documentation on referencing elements in XML strings
will make it easier to deprecate :) .
Eddie O'Neil <[email protected]> wrote:
David--
A general data binding description is here:
http://edocs.bea.com/workshop/docs81/doc/en/workshop/guide/netui/guide/conDatabindingXScript.html
This help topic describes the NetUI data binding contexts and how
properties / objects are
accessed using them. As far as property binding, a question that came
up in the group earlier,
public properties always win over JavaBean properties, so if you expose
data on any Java object
(page flow, global app, form bean, repeated data item) like this:
::::: Controller.jpf
public String foo = "foo";
private String anotherFoo = "another foo";
public String getFoo()
return anotherFoo;
and bind to this in a JSP:
<netui:label value="{pageFlow.foo}"/>
the value "foo" will display in your page because it is a public property.
The specific example that you mention below is a sample of using the
XScript capabilities in the
8.1 NetUI data binding language to bind directly to parts of an XML document
without having turned
the document itself into a JavaBean.
Frankly, I'd encourage you to use a JavaBean centric approach as we
will likely deprecate this
feature in the future in favor of a more XMLBean / JavaBean centric binding
model. The JavaBean
property binding model is also much more in-line with the JSP 2.0 expression
language.
In the same vein, I'd also suggest following the best practice of
exposing JavaBean properties on
your objects instead of using direct binding to fields.
If you have additional specific questions, feel free to post them
here and we can address them as
they come up.
Hope that helps...
Eddie
David Karr wrote:
Where in the documentation does it clearly spell out exactly what youcan do with
the data binding language (the stuff between "{...}")? I'm tryingto understand
what is happening in the SamplesApp, in the "repeaterTag" module,in XMLString.jsp
and repeaterTagController.jpf.
In particular, in XMLString.jsp, it references an expression like this:
<netui-data:repeater dataSource="{pageContext.xml.employee}">
I can't figure out how this is working. I can see that the "callPageFlow"tag
just before this is putting the result of "getXMLStr()" into the "xml"variable.
This string looks like this:
<employees>
<employee title=\"CEO\"><first>Mary</first><last>Smith</last></employee>
<employee title=\"President\"><first>Mark</first><last>Jones</last></employee>
<employee title=\"Vice President\"><first>Matt</first><last>Nelson</last></employee>
<employee title=\"Salesperson\"><first>John</first><last>Doe</last></employee>
<employee title=\"Office Manager\"><first>Jane</first><last>Doe</last></employee>
</employees>
This usage of the data binding language is a little unusual, but Iwould assume
it's documented somewhere, right?

Context Mapping and data binding

Hi,
Please explain about the context mapping and data dinding
and also differences
Thank's & Regard's.
Sri

Hi Sridevi Sudunaguntla ,
context mapping-> means mapping between different contexts
ie suppose if we are creating a node in the component controllet and if we want to use that node in view a and view b, then we have to map this node from component controller to the required view.. this mapping of context nodes is called context mapping..for context mapping, create nodes in compcontroller.. tehn go to view-> context-> tehn drag and drop required node from component controller to the view ..
data binding-> means binding the data from nopde to the ui elements or viceversa... after the nodes are created in indudual views or after context mapping.. we have to bind these nodes to the ui elements... suppose we have an input field and we want to read that,, so we have to bind the input field to an attribute in the node.. this binding is called.. data binding.
Regards
Sarath

How can I set the data binding between Web Dynpro & Database table

Dear friend,
I am a beginner of Web Dynpro. I want to develop my simple project like these:
1. Create my own database table via Dictionary Project such as TAB_USER and have 3 fields: USER_ID, USER_NAME, USER_POSITION and I have already deployed & archived it.
2. Create my own Web Dynpro Project, and create the input fields as User ID, User name, User position and icon 'Save' on the selection screen and I have deployed it already.
For the process, I want to input data at the screen and save the data in the table, please give me the guide line like these:
1. How can I set the data binding between Web Dynpro and Database table ?
2. Are there any nescessary steps that I will concern for this case?
Sorry if my question is simple, I had try to find solution myself, but it not found
Thanks in advances,
SeMs

Hi,
You can write your own connection class for establishing the connection with DB.
Ex:
public class ConnectionClass {
static Connection con = null;
public static Connection getConnection() {
try{
Context ctx = new InitialContext();
DataSource ds = (DataSource) ctx.lookup("jdbc/TSPAGE");
con = ds.getConnection();
return con;
}catch(Exception e){
return null;
You can place the above class file in src folder and you can use this class in webdynpro.
You can have another UserInfo class for reading and writing the data into the DB .
Regards, Anilkumar
PS : Refer
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webas/java/simple java bean generator for database.pdf
Message was edited by: Anilkumar Vippagunta

Dynamic table & data binding

Hi all,
I am trying to create an interactive form in WebDynpro ABAP (using Livecycle Designer 8.0).
This application consists of two screens.
I have a selection screen which populates an internal table in a context node.
The next screen has the interactive form and should create the table dynamically to match the internal table.
I can see the context on this screen as I inserted a simple WD table UI element and it displays the data.
I created my form in the wizard here which allows you to set the interface to be a context node in the application. However the binding is not working at all. In fact when I set the binding attribute in the various subforms, rows etc I get a warning message
"Using 'Normal' data binding when a default data connection is defined may produce undesirable results"
Has anyone experienced this before or can anyone tell me how to set up a dynamic, bound table in WebDynpro ABAP?
Thanks,
Gregor

Hi Gregor,
From your information, I can say that you are having two Views. In the First View you have a selection screen and by the selection screen you are filling the Internal Table which is being used in the next View.
To display the Internal in the Adobe Interactive Form from WebDynpro. Firstly you need to create a main context node and in that context node create another sub node with Cardinality "0..n" and Selection "0..1"and link that to a Table or Structure or leave that blank. i you left blank create attributes of your own or select from the table or structure you have referenced.
Now in the Method you fill sub node after all the select statements written and at end write a code "sub_node_name->bind_table ( internal_table )".
Now after filling the template source it asks for the interface, when filling select the main context node.
I think this will solve your problem.
Regards
Pradeep Goli

Adobe Form - Data Binding for static text

Hi Experts,
I'm trying to create a new label with Adobe Forms (not interactive).
So I've created an interface with a table LABEL_DATA (import) and many variables (import) and a new Form with Layout.
I tried to bind some text fields with the imported variables und fields from the table, they're all available in the context, but all fields are still empty (preview and print).
Field are Text Fields
Type is : Read Only
Data Binding is : $record.LABEL_DATA.KDMAT
Can someone please help me?
Thank you.
Regards,
David

Hello David,
In your interface, have you declared LABEL_DATA as GLOBAL Data ?
You can fill the table and variables in the INITIALISATION in the interface.
Then you can use the Global table and variables in the form.
In case you are missing some values; you can debug the code in INITIALISATION section. Get the import tables in INITIALISATION and filter the required values into Global Table and variables.
Regards
Sandy

Run time data binding via FormCalc/JavaScript+wrong text formating

Hello Everybody
I need to print a text block with company details depending on company code (different details for different codes). I tried to use this code for event "calculate":
if ($record.LS_HEADER.BUKRS == "1000") then
$ = $record.COMP_DETAILS_1000
elseif ($record.LS_HEADER.BUKRS == "1000") then
$ = $record.COMP_DETAILS_2000
endif
$record.COMP_DETAILS_1000, $record.COMP_DETAILS_2000 are elements from the form context which are linked to textmodules.
This code works and it prints correct textmodules for different company codes. But the printed text is not formated like text in the textmodules. The most important thing here is that these texts are always printed as a single long string and I need paragraphs like in the textmodules. It's a problem... If I use a statical binding (without FormCalc programming) the text modules will be printed with correct formating.
Using of checkbox "Allow Multiline Lines" hasn't helped here...
Have you any idea how should I do the run time data binding?
Thank you very much in advance!

Hello,
the important part is "If I use a statical binding (without FormCalc programming) the text modules will be printed with correct formating." That means you can get the text in the shape you want. Just do that. Get all the texts. Next use the JS/FC scripting to hide all but one text. You get only one text to display and you use static binding to get the proper text format.
Hope this helps, Otto

[svn:fx-trunk] 9349: * Added support for using getStyle() in Mxml data binding expressions.

Revision: 9349
Author:   [email protected]
Date:     2009-08-17 11:32:37 -0700 (Mon, 17 Aug 2009)
Log Message:
Added support for using getStyle() in Mxml data binding expressions.
In addition to the existing "function return watcher" data binding
functionality, we register to listen for style related change events
when we see a function marked with [Bindable(style="true")].
UIComponent's and TextGraphicElement's styleChanged() will now
dispatch events for "getStyle()" FunctionReturnWatchers to handle.
When null or "styleName" is passed into styleChanged(), we dispatch
an "allStylesChanged" event.
QE notes: mxunit test to follow
Doc notes:
Bugs: SDK-20394
Reviewer: Glenn, Pete F, Peter D
Tests run: checkintests, mxunit databinding
Is noteworthy for integration: only if you want to start using it.
Code-level description of changes:
modules/compiler/src/java/flex2/compiler/as3/binding/DataBindingExtension.java
    Modified generateWatcher() to do the AST equivalent of the
    WatcherSetupUtil.vm change.
modules/compiler/src/java/flex2/compiler/as3/binding/FunctionReturnWatcher.java
    Removed unused isNew variable and added isStyleWatcher variable.
    Modified shouldWriteSelf() to return true if isStyleWatcher is true.
modules/compiler/src/java/flex2/compiler/as3/binding/WatcherSetupUtil.vm
    Modified writeFunctionReturnWatcher macro to add a true arg to the
    FunctionReturnWatcher constructor call when isStyleWatcher() is
    true.
modules/compiler/src/java/flex2/compiler/as3/binding/BindableFirstPassEvaluator.java
    Modified evaluate(Context, MetaDataNode) to skip reporting an
    error for no events when style is true.
modules/compiler/src/java/flex2/compiler/as3/binding/DataBindingFirstPassEvaluator.java
    Replaced insideCallExpression boolean with callExpressionStack
    Stack. The "!insideCallExpression" checks were replaced with
    callExpressionStack.isEmpty().
    Modified addBindables() to handle [Bindable(style="true")].
    Made argumentListStack and resetSet more strongly typed.
frameworks/projects/framework/src/mx/core/UIComponent.as
    Modified styleChanged() to dispatch a "Changed" and "allStylesChanged" from the previous
    parent and add listeners to the new parent when isStyle is true.
    Modified eventHandler to notifyListeners() when isStyle is true.
frameworks/projects/spark/src/spark/primitives/supportClasses/TextGraphicElement.as
    Similar changes to UIComponent.
Ticket Links:
    http://bugs.adobe.com/jira/browse/SDK-20394
Modified Paths:
    flex/sdk/trunk/frameworks/projects/framework/src/mx/binding/FunctionReturnWatcher.as
    flex/sdk/trunk/frameworks/projects/framework/src/mx/core/UIComponent.as
    flex/sdk/trunk/frameworks/projects/spark/src/spark/primitives/supportClasses/TextGraphicE lement.as
    flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/as3/binding/BindableFirstPassEval uator.java
    flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/as3/binding/DataBindingExtension. java
    flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/as3/binding/DataBindingFirstPassE valuator.java
    flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/as3/binding/FunctionReturnWatcher .java
    flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/as3/binding/WatcherSetupUtil.vm

Remove Binding Context - SAPUI5

Hello All,
I set a binding context to a viz-column-graph when I click on a datapoint. But now I want to implement a method where, on a button click(on UI) I need to remove the current context thats been binded to the graph.
My current code to do that:
onPress:function(){
flattened_dataset = this.getView().byId("dataset");
dataset.removeAllDimensions();
new_dimesion_prd_name = new sap.viz.ui5.data.DimensionDefinition ({name:"Product_Name", axis:1, value:"{Product_Name}"});
new_dimesion_year = new sap.viz.ui5.data.DimensionDefinition ({name:"Year", axis:1, value:"{Year}"});
new_dimesion_quarter = new sap.viz.ui5.data.DimensionDefinition ({name:"Quarter", axis:1, value:"{Quarter}"});
dataset.insertDimension(new_dimesion_prd_name,1);
dataset.insertDimension(new_dimesion_year,2);
dataset.insertDimension(new_dimesion_quarter,3);
var graph = this.getView().byId("graph");
graph.unbindElement();
flattened_dataset.bindData('Quarter');
But the unbindElement() does not work in my case. Maybe I am missing something.
Any suggestions on How to remove the current binding context on a page or graph element etc.
Thanks in advance.
Regards
Sangamesh

Just to be clear:
The oracle.adf.model.binding.DCBindingContainer (a.k.a. Binding Container) represents the pageDef file for the page/fragment. In a JSF page you can refer to it via the EL expression #{bindings}. As Puthanampatti mentions the Binding Container contains references to the other bindings in your page including Value and Action bindings.
The oracle.adf.model.BindingContext (a.k.a. Binding Context) is a parent class to all the DCBindingContainer instances in your application. In a JSF page you can refer to it via the EL expression #{data}.
Note it is considered bad form to attempt to access the DCBindingContainer of another page/fragment from your current page/fragment. This is because the framework doesn't guarantee the Binding Container for the other page/fragment will be initialized.
Regards,
CM.

Binding Context

Hi All,
I am working on River RDE extension project, where I have extended new views and controllers and able to navigate between them as well by implement navigation routes in Component.js. But still, I am having difficulties to set the binding context when I make call to navigate to new view (XML view) from a controller (JS controller). I am trying to call this.oRouter.navTo() method and inside that I am setting subroutes which I declared in my Component.js. Please provide guidance to follow an effective way to do context binding and share data across different view?
Thanks & Regards,
Chet

A better solution generally is not to try and find the VO and then get the attribute. It's really better to use EL to get the value without having to step up into the App module - check out the following:
http://www.groundside.com/blog/content/DuncanMills/J2EE+Development/?permalink=386D9E214C8E314E7C3B57A1B51DA684.txt

Binding context scope

Hi, if I understood fine the page context is the structure that reflect the page definition file , is true ?
And , what is the scope of binding context of a page , it survice to request and rendering of related page ?
thanks
sorry , I meaning : binding container . It is the object representing the page definition ? and what is the scope of binding container ?
Edited by: Kronos72it on Sep 24, 2011 4:55 PM

Just to be clear:
The oracle.adf.model.binding.DCBindingContainer (a.k.a. Binding Container) represents the pageDef file for the page/fragment. In a JSF page you can refer to it via the EL expression #{bindings}. As Puthanampatti mentions the Binding Container contains references to the other bindings in your page including Value and Action bindings.
The oracle.adf.model.BindingContext (a.k.a. Binding Context) is a parent class to all the DCBindingContainer instances in your application. In a JSF page you can refer to it via the EL expression #{data}.
Note it is considered bad form to attempt to access the DCBindingContainer of another page/fragment from your current page/fragment. This is because the framework doesn't guarantee the Binding Container for the other page/fragment will be initialized.
Regards,
CM.

MVC - Performance of data binding

Hi Gurus out there
I have a concern regarding performance of (dynamic) data binding if I have a lot of <i>textEdit</i> fields containing huge amount of data on a view page.
<u>Scenario</u>:
The view page contains buttons <b>[Add textEdit field]</b> and<b> [Save all entries]</b>. If you click the button <b>[Add textEdit field]</b> then a (new) <i>textEdit</i> will be generated and the model remembers the total number of <i>textEdit</i> fields that have been generated.
DATA: textedit_count TYPE i,
      o_textedit     TYPE REF TO cl_htmlb_textedit,
      tabix(6)       TYPE c,
      binding_code   TYPE string,
      binding_str    TYPE string.
textedit_count = o_model->get_section_count( ).
DO textedit_count TIMES.
* Create a unique ID for a textEdit field:
tabix = sy-index.
CONDESE tabix NO-GAPS.
* String for the data binding of internal table model->data_stream_tab:
CONCATENATE '//model/data_stream_tab['
              tabix
              '].data_string'
         INTO binding_str.
* Dynamic data binding:
CREATE OBJECT o_textedit.
CONCATENATE 'myTextEditID' tabix
         INTO o_textedit->id.
o_textedit->width = 650.
o_textedit->height = 225.
o_textedit->_text = binding_str.
binding_code = o_textedit->IF_BSP_BEE~RENDER_TO_STRING( page_context ).
<htmlb:label for = "<%= o_textedit->id %>"
            text = "<%= o_textedit->id %>"
          design = "EMPHASIZED" />
<%-- Binding of the attribute (internal table) '//model/data_stream_tab<i>.data_stream' --%>
<%= binding_code %>
ENDDO.
Obviously the <u>whole</u> contents of the <i>textEdit</i> fields in the coding above are <u>always</u> "moved" from the web browser to the server and vice versa when the button <b>[Add textEdit field]</b> is hit every time even though the content of some <i>textEdit</i> fields haven't changed.
Does anyone have a good solution/optimization for this problem? Any suggestion, comment and/or answer will be very appreciated.
Thanks
HW

Place this code above any textedit elements you have in your page:
<script type="text/javascript">
var myFields = new Array();
</script>
Then place this code after every textedit elements, this code will get run when the page is loaded in the browser, right after your element. You are saving the ID and the default value of your element to an array. For every further element, increase the array counter by 1!
<script type="text/javascript">
myFields[0] = new Object();
myFields[0]["id"] = 'myTextEdit1';
myFields[0]["default_value"] = document.getElementById(myFields[0]["id"]).value;
</script>
Finally, include this function in your page (does not have to be at the bottom, I just put it here chronologically):
<script type="text/javascript">
function compareFields() {
for (var i = 0; i < myFields.length; ++i) {
    if(myFields<i>["default_value"] == document.getElementById(myFields<i>["id"]).value) {
    // nothing has changed, set to ignore-value (any highly unlikely value, like ")?.("
    document.getElementById(myFields<i>["id"]).value = ')?.(';
    // check against this value in your setter method
    // if this is set, then do not user submitted value to update your model attribute value
    // maybe do some output for debug purposes
    // alert(document.getElementById(myFields<i>["id"]).value);
}</script>
Now add this attribute to your submit button:
onClientClick = "javascript:compareFields();"
This should do, test it out and let me know.
Max

Report data binding error

I have created a banded report split into departments. Each
recore has a value associated with it. The report runs fine if I
dont try to sub-total each departments vale, but if I add a
calculated field to the banding, I get the following error:
Report data binding error Error evaluating expression :
textField_2 Source text : calc.Department_Total.
Variable calc.Department_Total is undefined.
The calculated field is simply the sum of the values, with an
initial value of 0 and set to reset when the group changes on the
department. I am using the same data type for the calc field as it
automatically gave for the original Value field (Big Decimal)
Any ideas?
Dave H

Does anyone have any ideas about this, Its getting a bit
critical now. Has anyone else been able to do sums that calculate
on group changes?? The sum total works for the report, jusyt not
the bands. I desparate here, pulling my hair out.
Regards
Dave H

Unable to find information on WS data binding error on WLS 9.2.03 startup

Frustratingly, when I Google for "WS data binding error" I get 'old' links to BEA forum issues which may help but these are nowhere to be seen on the read-only copies now on Oracle forums here :- http://forums.oracle.com/forums/category.jspa?categoryID=202.
The link I'm looking for is:-
forums.bea.com/thread.jspa?threadID=600017135
Is there anywhere I can get access to this information or should I just post new items on the new WLS forum?
Many thanks.
p.s. the errors I am trying to research are as follows:-
<WS data binding error>could not find schema type '{http://xmlns.oracle.com/apps/otm}Transmission
<WS data binding error>Ignoring element declaration {http://xmlns.oracle.com/apps/otm}Transmission because there is no entry for its type in the JAXRPC mapping file.

Check this..
http://docs.oracle.com/cd/E10291_01/doc.1013/e10538/weblogic.htm
you can ignore those warnings
The following data type binding warnings and errors are displayed during deployment and start of Decision Service (Business Rules) Applications. These errors and warnings can be ignored.
<WS data binding error>could not find schema type '{http://www.w3.org/2001/XMLSchema}NCName
<WS data binding error>could not find schema type
'{http://websphere.ibm.com/webservices/}SOAPElement
java.lang.IllegalStateException
at weblogic.wsee.bind.runtime.internal.AnonymousTypeFinder$GlobalElementNode.
getSchemaProperty(AnonymousTypeFinder.java:253)

Dynamic Data Binding at runtime

For future applications, flexibility will be an important feature. One of the biggest drawbacks of forms is/was, on my opinion, not being able to create new items at runtime.
JClient will easily overcome this restriction. But how about data binding ?
Imagine the following situation: We've got a VO "order" with the "custname" incorporated as lookup data. At runtime, the user decides that she needs to see the "custloc" as well (put an additional JTextField into some whitespace on his panel). As I understand it is possible to build a view link to tie an instance of the VO "customer" to the "order" (I'd prefer that over adapting the query statement of "order" at runtime). But how can I create the new iterator binding and control binding needed to populate the dynamically created attributes with the data from "customer"? And, further on, how will I be able to make the changed configuration of my panel persistent, let's say into the DB ? Or does the data binding concept of 10g just not cover this requirement?

Hi pascal
It is not possible to send you email at your address. All come back with a permanent error
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Data binding (context)

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