Filter Custom Component

I'm trying to build a Filter custom component, which will convert a binary file to an XML file on the fly and send to the requester.
I'm trying to use the 'checkDownloadOverride' filter event for this case. But I cant find the content bytes in any object or key.
Does anyone have any info on this?

Well, I found out that DataBinder being passed to doFilter method contains bytes in m_rawPostData. So that might be the file content. But even after overwritting it, I'm not getting the new content as part of the response. Looks like it performs another SELECT to get the file content (again!) after executing this filter.
Anyone has any idea why it's happening and how to handle this?

Similar Messages

How a custom component is called when we install a custom component in UCM.

How a custom component is called when we install a custom component in UCM.
On what event the component services will be activated and called.
Suppose i create a Custom service name MULTIPLECHECKIN then this service will be called on what event and where it will be defined to call.

Saurabh,
the code is packed in the component (see component\Security Filter\java\Security Filter\ModifyAttributesFilter.java - the first Security Filter is the component name, the other Security Filter is the Java package name).
What is important:
- your class must implement the FilterImplementor interface (you will need UCM standard classes - server.zip in your classpath) and its doFilter method
How the filter is executed?
- actually, in this case you don't need any new service - you can use the standard 'hook', which is provided by standard checkin services
- in Component Wizard create a new component, add your compiled class to it (make sure you follow the rules not to end up in classpath issues)
- in Component Wizard click the 'Java Code' tab. Here you can add a Custom filter called validateCheckinData, which is executed by standard checkin services. If you parametrize the filter to call your class created above, you are done.
'Working with Content Components' manual (e.g. here: http://download.oracle.com/docs/cd/E10316_01/cs/cs_doc_10/documentation/developer/using_components_10en.pdf) can give you a basic picture. A better resource is Bex Huff's book - I would recommend you to get it, because it has a step-by-step HelloWorld example which can guide you through Component Wizard. I could also send you my own component (send me an email at [email protected]) which implements a filter for user quotas, so you just need to "replace classes".
As for the other half of your task, searching for the file in the database server will work only if you use database as your storage (ie. install and configure File Store Provider component accordingly). Of course, you could do a search for file in this case - just consider that you will be comparing two BLOBs rather than two relatively short check-sums (most likely strings or arrays of bytes). Besides, it will not work if you use filesystem as your storage.
Jiri

Implementing cookie manipulation through servlet api in a custom component.

I have a situation in my project where i want to set cookie to the browser, by executing a service of content server( a custom component). So when i execute the service the component invokes a method which checks if the cookie exist in the system, else create a new cookie.
Please help.

Setting a cookie in java code in a filter or some such would look something like this:
setHttpHeader(service, "Set-Cookie", key + "=" + StringUtils.encodeHttpHeaderStyle(val, true) + "; path=/; expires=" + LocaleUtils.formatRFC1123Date(someDate));
or this
setHttpHeader(service, "Set-Cookie", key + "=" + StringUtils.encodeHttpHeaderStyle(val, true) + "; path=/;");
And setHttpHeader looks like:
protected void setHttpHeader(Service service, String key, String val)
Vector vector = (Vector)service.getCachedObject("CustomHttpHeaders");
if(vector == null)
vector = new Vector();
service.setCachedObject("CustomHttpHeaders", vector);
vector.addElement(key + ": " + val);
And getting the cookie is something like this:
String val = databinder.getEnvironmentValue("HTTP_COOKIE");
if(val != null)
obj = DataSerializeUtils.parseCookie(val, key);

Using Predicate filters in a Custom component

Hello,
I have a cusom datagrid component, which gets it's data from a XMLListCollection object. The xmlList is a simple <employess><employe1><fname/><lname/></emloye1></employees>
I have a text input as a part of this custom component. I am creating a change event on the control to trigger a filter function filterGrid(). I want the frid to dynamically change data as the user types the characters. Currently i have hardcoded my predicate filter to filter the grid whenever the first char matches J. How can i change this to read the chars from the text input.
            private function filterGrid(event:Event):void {
                if(text1.text!="") {
                    myXMLCollection.filterFunction = filterEmp;
                }else {
                    myXMLCollection.filterFunction = null;
                myXMLCollection.refresh();
            private function filterEmp(item:XML):Boolean {
                var searchResult:XMLList;
                searchResult = item.(/^J/.test( fname ) );//Help need here
                trace(searchResult);
                if(searchResult.length()>0) {
                    return true;
                return false;
Thanks,

I got this to work
var pattern2:RegExp = new RegExp(text1.text, "i");\
searchResult = item.(pattern2.test( fname ) || pattern2.test(lname) );
But have another problem, the regex matches any charater and not the first chars as i type them for example
IF i have
John Macey
Tracy Jordon
and if i type 'c' in the textnpt i get both John Macey and Tracy Jordon.
Will dig further,

JSF custom component

Hi
I have created a JSF cutom component , which has some javascript files. If i use the component within the same project my path for accessing the JS files is :- js/task.js (Its in public/html folder) .
My problem is that when I use this custom component in some other project i am not able to access the js file ( Js file are deployed with other source file in ADF Library Jar) . As I have to hard code the path of JS files in the render can any one please tell me what will be the path for accessing the JS files.
i heard ADFLibraryFilter is used for the purpose. Anyone please shed more light on it.

Thanx Frank for your help .
I am generating html from the rendererm, in the encodeBegin method i have now written <script type="text/javascript" src="adflibResources/js/task.js"></script>
But still the script isn't loading on the page
I added the following code in web.xml but Jdeveloper (Studio Edition Version 11.1.1.1.0) is complaining that "refernce oracle.adf.library.webapp.LibraryFilter and oracle.adf.library.webapp.ResourceServlet not found. I am using Fusion Web Application (ADF) as the application template.
<filter>
<filter-name>ADFLibraryFilter</filter-name>
<filter-class>oracle.adf.library.webapp.LibraryFilter</filter-class>
<init-param>
<param-name>provider-lazy-inited</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>ADFLibraryFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>FORWARD</dispatcher>
<dispatcher>REQUEST</dispatcher>
</filter-mapping>
<servlet>
<servlet-name>adflibResources</servlet-name>
<servlet-class>oracle.adf.library.webapp.ResourceServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>adflibResources</servlet-name>
<url-pattern>/adflib/*</url-pattern>
</servlet-mapping>

Execute UCM Service in custom component

Hi ,
I was looking for information how to execute the UCM service in custom component and found a couple of blogs regarding the same :
http://jonathanhult.com/blog/2012/06/execute-a-service-from-a-java-filter/
http://jonathanhult.com/blog/2012/10/who-created-that-site-studio-section/
http://www.redstonecontentsolutions.com/5/post/2012/05/executing-a-service-from-aservicehandler.html#sthash.X31M6ZCS.tvlE83Km.dpbs
I am new to webcenter content and couldn't understand above blog stuff properly. Queries :
1. We may need to call the UCM service in filter, Service or ServiceHandler. Is there any difference in code required to execute a service ?
2. What is the correct code to execute the UCM service ?

Ad 1) the reason why the same service might be executed slightly differently from e.g. a filter or another service/service handler is that classes Service, ServiceHandler, and the interface FilterImplementor provide slightly different attributes. Note that you may also execute a service from iDocScript (via the executeService command - see http://docs.oracle.com/cd/E23943_01/doc.1111/e10726/c08_config_ref.htm#i1078100)
Ad 2) There is no 'correct' or 'incorrect' way/ Simply, from a filter you will do it this way, and from a service that way. I think you should ask, what is the correct way to implement my custom service - should it be a filter? Or rather a service handler? Will I need Java, or is iDocScript enough? Unfortunately, you have not shared anything about what your component should do.

Adding Visual custom component in spark DataGrid

I am working with flex 4.5. I want to create Gauge component Datagrid.
I am using open source com.betterthantomorrow.components. I have created custom components like this
    <?xml version="1.0" encoding="utf-8"?>
    <s:BorderContainer xmlns:fx="http://ns.adobe.com/mxml/2009"
                                               xmlns:s="library://ns.adobe.com/flex/spark"
                                               xmlns:mx="library://ns.adobe.com/flex/mx"
                                               xmlns:bttc="com.betterthantomorrow.components.*"
                                               xmlns:gauge="com.betterthantomorrow.components.gauge.*"
                                               xmlns:objects="tekhnia.com.tekhniag.objects.*"
                                               width="30%" height="65" backgroundColor="black" borderColor="black"
                                               creationComplete="init(event)">
              <fx:Declarations>
                        <mx:NumberFormatter precision="1" id="formatter" rounding="nearest" />
              </fx:Declarations>
              <fx:Script>
                        <![CDATA[
                                  import mx.events.FlexEvent;
                                  import mx.messaging.channels.StreamingAMFChannel;
                                  [Bindable]
                                  public var cpuValue:Number;
                                  [Bindable]
                                  public var memoryValue:Number;
                                  [Bindable]
                                  public var diskValue:Number;
                                  [Bindable]
                                  public var mycomp:String;
                                  [Bindable]
                                  public var serverName:String;
                                  [Bindable]
                                  public var statusImage:String;
                                  protected function init(event:FlexEvent):void
                                            var strValues:String;
                                            var strColors:String;
                                            var strAlphas:String;
                                            strColors="0x009900,0xFFFF00,0xDD0000";
                                            strValues="0,50,70,100";
                                            strAlphas=".8,.8,.8"
                                            var values:Array=strValues.split(",");
                                            var colors:Array=strColors.split(",");
                                            var alphas:Array=strAlphas.split(",");
                                            gauge1.setStyle("alertValues",values);
                                            gauge1.setStyle("alertColors",colors);
                                            gauge1.setStyle("alertAlphas",alphas);
                                            gauge2.setStyle("alertValues",values);
                                            gauge2.setStyle("alertColors",colors);
                                            gauge2.setStyle("alertAlphas",alphas);
                                            gauge.setStyle("alertValues",values);
                                            gauge.setStyle("alertColors",colors);
                                            gauge.setStyle("alertAlphas",alphas);
                                            gauge.invalidateDisplayList();
                                            gauge1.invalidateDisplayList();
                                            gauge2.invalidateDisplayList();
                        ]]>
              </fx:Script>
              <s:layout>
                        <s:HorizontalLayout/>
              </s:layout>
              <s:TileGroup width="101" paddingLeft="20" paddingRight="2">
                        <bttc:Gauge id="gauge"
                                                      diameter="50" width="50"
                                                      verticalCenter="0" horizontalCenter="-111"
                                                      minValue="1" maxValue="10" value="{cpuValue}" valueFormatter="{formatter}"
                                                      bigTicks="9" smallTicks="45" showMinMax="false" showValue="false" pointerColor="white"/>
              </s:TileGroup>
              <s:TileGroup width="101" paddingLeft="20" paddingRight="2">
                        <bttc:Gauge id="gauge1"
                                                      diameter="50" width="50"
                                                      verticalCenter="0" horizontalCenter="-111"
                                                      minValue="1" maxValue="10" value="{memoryValue}" valueFormatter="{formatter}"
                                                      bigTicks="9" smallTicks="45" showMinMax="false" showValue="false" pointerColor="white" automationName="T"/>
              </s:TileGroup>
              <s:TileGroup width="101" paddingLeft="20" paddingRight="2">
                        <bttc:Gauge id="gauge2"
                                                      diameter="50" width="50"
                                                      verticalCenter="0" horizontalCenter="-111"
                                                      minValue="1" maxValue="10" value="{diskValue}" valueFormatter="{formatter}"
                                                      bigTicks="9" smallTicks="45" showMinMax="false" showValue="false" pointerColor="white"/>
              </s:TileGroup>
              <s:TileGroup width="40" paddingTop="3">
                        <s:Image source="assets/led/big/{statusImage}" />
                        <s:Label color="white" text="{serverName}" textAlign="center"/>
              </s:TileGroup>
    </s:BorderContainer>
I want to add this component in Datagrid. I have tried a lot on net. I didn't find any help. I read books as well.
Please help me. I found somewhere on the site one liner answer : write grid renderer. I don't how to write grid renderer and pass the data values to it.
I will be more thank full someone gives me pointer to sample grid renderer or code.

What's the flow here?
Do you want to pop-up a JSP in a window to prompt the user for extra information before submitting the check-in form? If so, you need a custom component to override the resource that draws the "submit" button on the form.
Or, do you want to execute something like a web service during the check-in process? If so, do a validateStandard filter. See the 'DynamicPrefix' comonent in the howtocomponents:
http://www.oracle.com/technetwork/middleware/content-management/index-092832.html

Adding a Custom Component to Check-In Operation

Hi everyone,
Our technical knowledge is very basic in UCM and ECM.
We are trying to add a JSP component which must have some interaction with the user just before a Check-in operation which should be consumed in the client's web browser.
Can anyone please point me in the right directions for creating such a schema. We are learning stuff such as Custom Components, Component Wizard, presentation of UCM data through JSON, JSP components, Dynamic Server Pages. We have found the product amazing so far just like every other Fusion Middleware product.
But still it is too early for us to decide what we should go with. Any info would be so much appreciated. I thought we could try a trigger before a Check-in operation through Content Profile, which would open a custom JSP added to UCM as a custom component. But it is very in-mature as you can point out.
Thanks.

What's the flow here?
Do you want to pop-up a JSP in a window to prompt the user for extra information before submitting the check-in form? If so, you need a custom component to override the resource that draws the "submit" button on the form.
Or, do you want to execute something like a web service during the check-in process? If so, do a validateStandard filter. See the 'DynamicPrefix' comonent in the howtocomponents:
http://www.oracle.com/technetwork/middleware/content-management/index-092832.html

Copying folders as a custom component

Hi,
I've a customer requirement to copy the folders, child folders and their content to another folder at a user's discretion. Looking to do this as a custom component I'm assuming that I would need to create a component using service classes vs. a java filter...Any thoughts, pointers would be most appreciated.
Thanks.

I would be very careful with this sort of component.
It is easily achieved but the results can be catastrophic.
Imagine a user copies a folder near the root with 10,000 child folders and 100,000 content items. What is the customers actual requirement - perhaps there is an alternative way to solve this (Windows Explorer Integration).
Anyhow if you do want to do it...
So perhaps consider restricting the functionality to a shallow copy not a deep copy (i.e. only copy content and direct child folders not grandchildren etc.)
Consider using links/shortcuts to content items instead of copying them (obviously this depends on what the customer really wants)
I think you will need to create a service class as this action is not really a side effect on some other event (what filters are best used for) but an explicit request to copy the folders.
Tim

Oracle ibr and custom component

Hi, i have done a custom component (Filter) who permit to download attachement , but in a programmable way (i can control the size and the type of files that can be used and some business logic) .
my filter works great (late say i attach a jpeg image , if i enable the IBR convertion of the jpeg format , the filter stopped working !!)
my filter is defined like the following:
@ResultSet Filters
4
type
location
parameter
loadOrder
postWebfileCreation
com.delta.FileFilter
null
1
@end
and thanks for your help

The indexes need to be synchronised for the items to be searched and returned. Hence until the next scheduled index update, the item will not be returned. To explicitly udpate the indexes, run the procedure in the portal database connected as the schema owner.
SQL> exec wwv_context.sync();

Showing Error MEssage using Custom Component

Hi,
I have built the custom component to validate the File Size and File Extension.
I.e user should be able to check in the document if size is less than 5MB and file extension is one of "Pdf", "doc", "tiff", "png".
Here whenever the validation files i am throwing the exception "File Size Exeeds the Limit or Invalid file Type".
I am able to get the custom component working as per the validation. And it is alsi logging the error in the Log file.
But i need to show the error message when the user cllick on the check in button in UCM page.
As of now it shows some generic error saying "Unable to execute service CHECKIN_NEW_SUB and function validateStandard.
The error was caused by an internally generated issue. The error has been logged"
Any help on this is highly appreciated.
Regards,
Rakshitha Shetty.

Hi,
You could throw a ServiceException in your filter with the message you want to display.
Romain.

Problem with inputText in my custom component

Hi, I have a custom dataTable component that I'm trying to get to work. It has to be a custom component because dataTable doesn't support rowspan, colspan, multi line headers, and a rendered attribute for rows. The problem is, that when I wrap the column tag inside my row tag then the method for the inputText tag never gets called in the UPDATE_MODEL_VALUES phase.
I'm starting to think that JSF doesn't support 2 levels of tags between the inputText and dataTable. I'm hoping that someone can tell me what I have wrong with my components.
Here is the JSP snippet.
<cjsf:rptTable>
     <cjsf:data id="dataTable1" value="#{allAuthUser.tableRows}" var="myTableRow1">
          <cjsf:row>
               <cjsf:col>
                    <h:inputText id="tableTestFld" value="#{myTableRow1.testFld}" size="5" maxlength="5"/>
               </cjsf:col>
          </cjsf:row>
     </cjsf:data>
</cjsf:rptTable>Here is what it renders. It looks to me like everything renders fine. So I'm guessing that there is something in a component that is causing JSF during the life cycle to not be able to process correctly.
<table>
     <tbody>
          <tr>
               <td><input id="tblmaintForm:body:dataTable1_0:tableTestFld" name="tblmaintForm:body:dataTable1_0:tableTestFld" type="text" value="" maxlength="5" size="5"/></td>
          </tr>
          <tr>
               <td><input id="tblmaintForm:body:dataTable1_1:tableTestFld" name="tblmaintForm:body:dataTable1_1:tableTestFld" type="text" value="" maxlength="5" size="5"/></td>
          </tr>
          <tr>
               <td><input id="tblmaintForm:body:dataTable1_2:tableTestFld" name="tblmaintForm:body:dataTable1_2:tableTestFld" type="text" value="" maxlength="5" size="5"/></td>
          </tr>
     </tbody>
</table>Note: If I leave off the row tag it renders the same way except of course the <tr> and </tr> tags are missing. If I do this, then the backing method for the inputText tag is called and everything works fine. Why doesn't it work with the row tag in place?
Here are the components:
public class UIRptTable extends UIComponentBase {
     public UIRptTable() {
          setRendererType("tblmaint.rptTableRenderer");
     public String getFamily() {
          return "javax.faces.Output";
public class UIRptTableData extends HtmlDataTable {
     public UIRptTableData() {
          setRendererType("tblmaint.rptTableDataRenderer");
     public String getFamily() {
          return "javax.faces.Data";
public class UIRptTableRow extends UIOutput {
     public UIRptTableRow() {
          setRendererType("tblmaint.rptTableRowRenderer");
     public String getFamily() {
          return "javax.faces.Output";
public class UIRptTableCol extends UIColumn {
     public UIRptTableCol() {
          setRendererType("tblmaint.rptTableColRenderer");
     public String getFamily() {
          return "javax.faces.Column";
}Here is part of the faces-config file in case you need it.

<component>
     <component-type>tblmaint.rptTable</component-type>
     <component-class>com.monsanto.ag_it.fieldops.aim.tblmaint.component.UIRptTable</component-class>
</component>
<component>
     <component-type>tblmaint.rptTableData</component-type>
     <component-class>com.monsanto.ag_it.fieldops.aim.tblmaint.component.UIRptTableData</component-class>
</component>
<component>
     <component-type>tblmaint.rptTableRow</component-type>
     <component-class>com.monsanto.ag_it.fieldops.aim.tblmaint.component.UIRptTableRow</component-class>
</component>
<component>
     <component-type>tblmaint.rptTableCol</component-type>
     <component-class>com.monsanto.ag_it.fieldops.aim.tblmaint.component.UIRptTableCol</component-class>
</component>

<render-kit>
     <renderer>
          <component-family>javax.faces.Output</component-family>
          <renderer-type>tblmaint.rptTableRenderer</renderer-type>
          <renderer-class>com.monsanto.ag_it.fieldops.aim.tblmaint.renderer.RptTableRenderer</renderer-class>
     </renderer>
</render-kit>
<render-kit>
     <renderer>
          <component-family>javax.faces.Data</component-family>
          <renderer-type>tblmaint.rptTableDataRenderer</renderer-type>
          <renderer-class>com.monsanto.ag_it.fieldops.aim.tblmaint.renderer.RptTableDataRenderer</renderer-class>
     </renderer>
</render-kit>
<render-kit>
     <renderer>
          <component-family>javax.faces.Output</component-family>
          <renderer-type>tblmaint.rptTableRowRenderer</renderer-type>
          <renderer-class>com.monsanto.ag_it.fieldops.aim.tblmaint.renderer.RptTableRowRenderer</renderer-class>
     </renderer>
</render-kit>
<render-kit>
     <renderer>
          <component-family>javax.faces.Column</component-family>
          <renderer-type>tblmaint.rptTableColRenderer</renderer-type>
          <renderer-class>com.monsanto.ag_it.fieldops.aim.tblmaint.renderer.RptTableColRenderer</renderer-class>
     </renderer>
</render-kit>I sure hope that someone can help me out. Please let me know if you need any additional information.
Thanks,
Ray

Hi, Ray!
1) I was trying to put a button in the column header (for sorting) and I couldn't get that to work. That involved the >colhdr tag. I got that to work but I don't remember the fix. I'll look it up and reply back with that when I can.Dealing the first part of your trouble, you need NOT a custom component.
I have looked through the implementation of RepeaterRenderer, as you advised me, and found that the multi-header possibility is included in the implementation of dataTable control.
The code below is the part of source of repeater.jsp with only change:
<d:data_repeater>  <h:dataTable>
And it works fine.
<h:dataTable id="table"
binding="#{RepeaterBean.data}"
     rows="5"
value="#{RepeaterBean.customers}"
var="customer">
<f:facet name="header">
<h:outputText value="Customer List"/>               <!� First Header row -- >
</f:facet>
<h:column>
<%-- Visible checkbox for selection --%>
<h:selectBooleanCheckbox
id="checked"
binding="#{RepeaterBean.checked}"/>
<%-- Invisible checkbox for "created" flag --%>
<h:selectBooleanCheckbox
id="created"
binding="#{RepeaterBean.created}"
rendered="false"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="Account Id"/>               <!�Second Header row -- >
</f:facet>
<h:inputText id="accountId"
binding="#{RepeaterBean.accountId}"
required="true"
size="6"
value="#{customer.accountId}">
</h:inputText>
<h:message for="accountId"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="Customer Name"/>               <!�Second Header row -- >
</f:facet>
<h:inputText id="name"
required="true"
size="50"
value="#{customer.name}">
</h:inputText>
<h:message for="name"/>
</h:column>
<h:column>
<f:facet name="header">                    <!�Second Header row -- >
<h:outputText value="Symbol"/>
</f:facet>
<h:inputText id="symbol"
required="true"
size="6"
value="#{customer.symbol}">
<f:validateLength
maximum="6"
minimum="2"/>
</h:inputText>
<h:message for="symbol"/>
</h:column>
<h:column>
<f:facet name="header">                    <!�Second Header row -- >
<h:outputText value="Total Sales"/>
</f:facet>
<h:outputText id="totalSales"
value="#{customer.totalSales}">
<f:convertNumber
type="currency"/>
</h:outputText>
</h:column>
<h:column>
<f:facet name="header">                    <!�Second Header row -- >
<h:outputText value="Commands"/>
</f:facet>
<h:commandButton id="press"
action="#{RepeaterBean.press}"
immediate="true"
value="#{RepeaterBean.pressLabel}"
type="SUBMIT"/>
<h:commandLink id="click"
action="#{RepeaterBean.click}"
immediate="true">
<h:outputText
value="Click"/>
</h:commandLink>
</h:column>
</h:dataTable>
You may have a look at HTML source to prove that dataTable is already what you need:
<table id="myform:table">
<thead>
<tr><th colspan="6" scope="colgroup">Customer List</th></tr>
<tr>
<th scope="col"></th>
<th scope="col">Account Id</th>
<th scope="col">Customer Name</th>
<th scope="col">Symbol</th>
<th scope="col">Total Sales</th>
<th scope="col">Commands</th>
</tr>
</thead>
<tbody>
2.) The second trouble is still unsettled as previously. Right now I have different task at my job, and I can�t continue investigation of this problem.
But when you find smth., please let me know. I�ll be very grateful.
Regards,
Oleksa Stelmakh

Unable to Edit the View in Custom Component

Hi Experts,
Please help me to resolve this issue !
I am unable to lock the BOL Entity in my custom component using BTAdminH. I have written the below code in the Edit event Handler for Edit Button. The lr_entity->lock( ) condition statement is getting false and it is skipping the "set_view_editable( me )." code statement. Why??
This is code excerpt that I have taken from edit button of the BP_HEAD/AccountViewSet and altered to my component/View
DATA: lr_entity     TYPE REF TO cl_crm_bol_entity,
        lr_controller TYPE REF TO cl_ZVKH8_bspwdcomponent_impl.
TRY.
      lr_controller ?= me->comp_controller.
      lr_entity ?= lr_controller->typed_context->btadminh->collection_wrapper->get_current( ).
IF lr_entity IS BOUND.
IF lr_entity->IS_LOCKED EQ abap_false.
    IF le_entity->IS_CHANGEABLE EQ abap_true.
       IF lr_entity->lock( ) EQ abap_true.
        me->view_group_context->set_view_editable( me ).
       ENDIF.
    ENDIF.
ENDIF.
ENDIF.
and when I directly executed the below code in the Edit event Handler for Edit Button I am receiving the dereferencing NULL value exception. Why in my custom component in many places this happening??
me->view_group_context->set_view_editable( me ).
Exception Details
CX_SY_REF_IS_INITIAL - Dereferencing of the NULL reference
Method: ZL_ZVKH8_DETAILSEF_IMPL=>EH_ONBACK
Thanks,
Bujji

Hi Summit & NishaNC,
Thanks for your responses !
As suggested, I have debugged the code for ->lock( ) method and there are exceptions raised from some methods.
Method GET_LOCK () -> Method GET_ROOT () ->Method GET_PARENT ()
At GET_ROOT( ) method i have received an exception
"Root entity BTAdminH could not be determined" and one more "Entity BTAdminH could not be locked"
Later when I have checked in MODEL Browser, I found that the BOL object "BTAdminH" for my view is an Access object and not the Root Object.
Hence, I have a question? Does the locking can be done only for ROOT Objects?
If this is TRUE then I think this is the major problem with my custom component where even the cross component navigation is also not happening and in many places I am receiving "Dereferencing NULL Value" information.
Also I have gone through some of the Threads and one information that I found from Sumit Mittal
1. An access object is an independent entity, has primary keys of its own.
2. A root object is a special access object that is at the top of the hierarchy based on business rules.
3. A dependent object's primary keys are supplied by access objects and it's lifetime is bound to them. If the parent object is destroyed, the dependent object is also destroyed.
4. Search objects are query objects useful for querying root objects
5. Search result objects - Search objects return the results in the form of a result object together with a relation pointing to the root object.
6. View objects - ?
7. Dynamic search objects - Used in advanced search, supports ranges and operators
Could you please specify in which scenarios we have to go for Access Objects and Root Objects
Thanks,
Bujji

How do you reference a valueObject located in main to a custom component created in Catalyst?

Hello,
I have been working with the Catalyst Beta 2 / Flash Builder beta trying to create a photogallery and have hit a little bit of a snag, try as I might I can't seem to find the answer anywhere. I am still new to Flex so please excuse me if this is a basic question, I have been trying to understand more about Flex to make my designs in Catalyst better.
I found this video on Adobe TV: http://tv.adobe.com/watch/rich-internet-applications-101/ria-stepbystep-16-binding-a-data- service-to-flash-builder-components/
It's wonderful and I have the datalist I created in Catalyst working with the XML file I generated but I designed my little photogallery a bit diffrent, I created a Custom Component in Catalyst so that when you click an item on the DataList it pop's up a little screen with a larger photo in on it, rather then having an image in the main application. Now my problem seems to be that I can't refrence the valueObject I created with the wizard as it's in my Main.mxml file, is there a way to refrence it from my Custom Component so the larger image will display? Is there a way to let the component know which item on the dataList in the main application is selected and display the correct image?
I should also say I really enjoy working with the Beta for both Flash Builder / Catalyst, thanks for the hard work!
Thanks for the help,
Chris

I am afraid you cannot bind to static properties in Windows Store Apps. It is simply not supported.
You could create a proxy class that exposes the static command property and bind to this property of an instance of the proxy object:
http://stackoverflow.com/questions/14186175/bind-to-a-static-field-in-windows-8-xaml
http://stackoverflow.com/questions/4708711/how-can-i-use-the-xstatic-extension-for-phone7-silverlight-apps
You will of course have to create an instance of the proxy object. There is no way around this.
Please remember to mark helpful posts as answer to close your threads and then start a new thread if you have a new question.

How to handle custom component data on overviewset save button CRM UI

Hi,
I have added a custom component to a standard view which is enchanted.
I can handle any data with my buttons on the component but after editing data
i need the save the data when the save button on the overview(top) is pressed.
I have redefined save button of overview but i cant get my data.
My node name is Root. I think i couldnt bind it to overview.
How can i do that?
Thank you

Probably it can be done by
http://wiki.sdn.sap.com/wiki/display/CRM/CRMWebUITechnical-CreatingTableViewInWebUI
i am trying
Thank you

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