Calling a function from a custom component

I got source files from another company that did a flex project for us before I started working here. They have custom compenents (mxml files) that they are currently calling public functions in, but when I add a new public function to the mxml component, it won't allow me to call that function. It tells me it can't access a property of a method of a null object reference... but it still calls the function that was there before I started working with the file..
I cleaned the project, and did a "build all" but can't figure out why it won't allow me to create new public functions to call.... can anyone tell me why?

I have the partsLocator_panel in the mxml
not sure what "new" is with that... first time working with custom components, but it looks like your just working with custom classes in AS3...
<mx:Panel
width="100%" height="100%" layout="absolute" styleName="DashboardPanel" title="PARTS LOCATER" backgroundAlpha=".6" id="partsLocater_panel">
<mx:Image x="10" y="38" source="assets/icons/gear.png"/>
<mx:Image x="10" y="63" source="assets/icons/gear.png"/>
<mx:Image x="10" y="89" source="assets/icons/gear.png"/>
<mx:Label x="40" y="39" text="Block 30" width="227" styleName="DashboardText" click="openParts()"/>
<mx:Label x="40" y="63" text="Block 40" width="227" styleName="DashboardText" color="#9D9D9D"/>
<mx:Label x="40" y="88" text="Block 50" width="227" styleName="DashboardText" color="#9D9D9D"/>
</mx:Panel>

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Change base view state from a custom component

I'm pretty new to flex and I'm having a small issue in change the view state from a component.
My Application have 2 custom components called userlogin and main menu. In the main application page I have userlogin component in one state and the main menu component in another. I'm trying to change the state if the login in successful from user login to main menu. I have the following function written inside the login component.
private function IsUserLoggedIn(evt:ResultEvent):void
                if (evt.result.islogin.toString() == "true")
                    currentState = "MainMenu";
                else
                    Alert.show("Login failed, please try again.", "Login Failed");
This code worked when I had all the controls in the main page. But then I created components and included them in to components and now when the login is success, its giving the following error.
ArgumentError: Undefined state 'MainMenu'.
    at mx.core::UIComponent/getState()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\core\UI Component.as:9908]
    at mx.core::UIComponent/findCommonBaseState()[E:\dev\4.0.0\frameworks\projects\framework\src \mx\core\UIComponent.as:9928]
    at mx.core::UIComponent/commitCurrentState()[E:\dev\4.0.0\frameworks\projects\framework\src\ mx\core\UIComponent.as:9750]
    at mx.core::UIComponent/setCurrentState()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\ core\UIComponent.as:9701]
    at mx.core::UIComponent/set currentState()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\core\UIComponent.as:6087 ]
    at components::UserLoginForm/__btnSubmit_click()[C:\Projects\WarrantyAutomation\src\componen ts\UserLoginForm.mxml:60]
I'm sure this has something to do with accessing the states from a custom component, but I do not know how to change the state to the main menu. Please help me with this. Any help is greatly appriciated.

Hi dasun1981,
private function IsUserLoggedIn(evt:ResultEvent):void
                if (evt.result.islogin.toString() == "true")
                    currentState = "MainMenu";
                else
                    Alert.show("Login failed, please try again.", "Login Failed");
If I am right the above function is in your userlogin component and the two components "userlogincomponent" and "maincomponent" are in main application file and the states were also defined in main application file.
But in the function above the currentState refers to the state of the userlogin component and not the main application ...but the states are defined in main application file...that's the reason why the exception was thrown...
Instead you replace the line in the above function with the below line:
Application.application.currentState = "MainMenu";
Please mark it as answer if it helped you.
Thanks,
Bhasker Chari

Calling a Function from another Function within CFC

Hi all,
I have many functions in my CFC that do various things, but
one query is a query that selects absolutely every record from a
table.
The thing is, I need to do a query like this in another
function to obtain only a recordcount of the same table used in
both separate functions. Instead of writing the query out again,
how can I utilise the function already written?
My question is, how can I invoke and use the results of a
query in one cffunction for another cffunction in the same CFC
component?
An example may look like the code attached...
Many thanks for your patience and help!
Mikey.

quote:
Originally posted by:
Dan Bracuk
Generally, to call a function from within a cfc, you do
exactly what you do outside a cfc.
For your specific case, if your requirements permit it, you
might consider caching the big query for a couple of seconds. Then
you can continously call the function and not have to wait for it
to run and bring back the data each time.
Do you mean to say that within a CFC function I can execute
the same cfinvoke tags I use in normal CFM pages?
Mikey.

How do I call a function from an Itemrenderer?

Hi, Im new in flex and I wonder if I can call a function from within an AdvancedDataGridRendererProvider
for example:
<mx:AdvancedDataGrid>
 <mx:columns>
 <mx:AdvancedDataGridColumn dataField="id" />
 </mx:columns>
 <mx:rendererProviders>
 <mx:AdvancedDataGridRendererProvider
 dataField="detail"
 renderer="components.myRendererProvider"
 columnIndex="2"
 depth="2"
 />
 </mx:rendererProviders>
</mx:AdvancedDataGrid>
<mx:Script>
 <![CDATA[
 public function outerFunction(){
 ]]>
</mx:Script>
myRendererProvider
<?xml version="1.0" encoding="utf-8"?>
<mx:HBox xmlns:mx="http://www.adobe.com/2006/mxml" paddingLeft="10" paddingRight="2" horizontalGap="2" paddingTop="0">
<mx:Script>
 <![CDATA[
 public function callOuterFunction( ){
 how do I call the outerFunction() from here?
 ]]>
</mx:Script>
 <mx:LinkButton fontSize="13" fontWeight="bold" click="callOuterFunction( )" label="label" />
</mx:HBox>
thank you in advance.

There are two ways to call a function from within an ItemRenderer. One way is to dispatch an event from your ItemRenderer and listen for the event in your main application. This approach has the advantage of creating loosely coupled code which is eaiser to maintain and extend if needed, but it takes a bit more work to set things up than using the second aproach lised below. You could also create a custom event to have greater control over what data is sent with the event.
private function callOuter():void {
 this.dispatchEvent(new MouseEvent());
The other approach is to call the main application by using parentDocument.
private function callOuter():void {
 parentDocument.handleItemRenderer();
Chris

Trying to call a function from a variable in Flex 4.0 ActionScript and need some suggestions

I am attempting to build a site map in Flex. I have my links (or will have) in a database, along with a "link." On click from a datagrid, I have an event handler where I can get the link. However, everything I have tried to use won't call the function. Ideally, I would like to call a function from from my topLevel application, and I can do that using the mx.core.FlexGlobals.topLevelApplication call. Can anyone point a fairly new Flex coder in the right direction? Thank you.

Here is the function on the group component (simplified): -- I got this from one of my google searches. The other was using the SWFLoader, but since this is in the same application, I didn't think it was as relevant. Plus, the SWFLoader used some references that I couldn't resolve.
private function site_click(event:ListEvent):void {
var sURL:String=list.dataProvider[event.rowIndex].link;
var sCommand:String="mx.core.FlexGlobals.topLevelApplication." + sURL;
this.[sCommand]();
This yields the error message ReferenceError: Error #1059: Property mx.core.FlexGlobals.topLevelApplication.myths_click() not found on sitemap and there is no default value.
Whereas this works fine:
mx.core.FlexGlobals.topLevelApplication.myths_click();
sitemap is my component name.

Calling a function from a DLL, exectution in background mode.

Dear Experts,
We have created an ABAP report the calls a function from a DLL file. If the report is executed in on-line mode the program calls and executes the function from the DLL, but if the ABAP programa is executed in background mode it doesnt calls the DLL function.
Do you know a way to solve the problem when executing in background mode?
Best regards.
Antonio

Hi Gabriel,
Let me explain in details about my DLL function.
We are importing the business partners from legacy system into the SAP CRM system, so at the moment we created the BP master data via BAPI, I get the name of the BP and this moment I call the function in the DLL file. I export the parameter name and I receive back a simplified string with the name reduced to a code. This code I get back from the dll it is insert in a Z table, so there is no interaction in the screen, all must be executed in background mode, because there are a lot of business partners to be converted in SAP system.
I am sending my code for your considerations.
Instancia a DLL
CREATE OBJECT dll 'MTCODE.CPFONET'.
IF sy-subrc NE 0.
    RAISE without_dll.
ENDIF.
Move para a tabela interna IT_NAME os valores recebidos na TI_NAME
it_name[] = ti_name[].
Para cada registro importado
LOOP AT it_name.
    CLEAR v_string_ret.
    wa_matchcode-zregid     = it_name-zregid.
    wa_matchcode-name1_text = it_name-name1_text.
    v_string = it_name-name1_text.
    CONDENSE v_string.
    TRANSLATE v_string TO UPPER CASE.
    CALL METHOD OF dll 'SetNome' EXPORTING #1 = v_string.
    CALL METHOD OF dll 'ExecMatch'.
    CALL METHOD OF DLL 'GetMCData' = v_string_ret.
    FREE OBJECT dll.
Preenche os campos do match-code de acordo com o retorno da DLL
    SPLIT v_string_ret
    AT '|'
    INTO wa_matchcode-zparmcln
         wa_matchcode-zparmcfn
         v_empty
         wa_matchcode-name_first
         wa_matchcode-name_last
         wa_matchcode-namemiddle.
Adiciona o registro com o match-code correspondente na TE_MATCHCODE
    APPEND wa_matchcode TO te_matchcode.
ENDLOOP.

How can I call a function from a procedure

I have a function named: f_calc_value which return the variable v_result. This function is part of a package.
How can I call this function from a new procedure I am creating?
Thanks

or refer this theread....calling function from procedure

Calling web Service from the Custom Adapter.Is it Possible?

Hi Experts,
I am having requirment in which i have to cal com.sap.aii.mapping.lookup.LookupService for calling web Service from the Custom Adapter.Is it Possible?
Regards,
Rajesh.D

Hi Rajesh..
Just looking the problem in another angle.. if there is no constraint that you have to use XI specific API to call the web service, why dont you use usual Java API used for calling a web service inside you custom adapter (I have Microsoft background.. donno exactly how it is done in Java,, but in .NET kind of a language it is possible). SInce your adapter is in Java itself and is capable of calling web service.. collect or lookup the data whatever you want and validate...
Just a thought..
VJ

Can I call a function from a dll in LabVIEW that returns:double*string and int.?

I have a function from a dll that return a double* string and an integer. How can I call this function from LabVIEW? There is a possibility to work in LabVIEW with a double* string?

pcbv wrote:
> Hello all, The header of the function is:
>
> "HRESULT WRAPIEnumerateDevices(WRAPI_NDIS_DEVICE **ppDeviceList, long *plItems);"
>
> where WRAPI_NDIS_DEVICE have this form:
>
> typedef struct WRAPI_NDIS_DEVICE { 
> WCHAR *pDeviceName; 
> WCHAR *pDeviceDescription; }
> WRAPI_NDIS_DEVICE; 
>
> The function is from WRAPI.dll, used for communication with wireless card.
> For my application I need to call in LabVIEW this function.
Two difficulties I can see with this.
First the application seems to allocate the array of references
internally and return a pointer to that array. In that case there must
be another function which then deallocates that array again.
Then you would need to setup the function call to have a pointer to an
int32 number for the deviceList parameter and another pointer to int32
one for the plItems parameter.
Then create another function in your DLL similar to this:
HRESULT WRAPIEnumExtractDevice(WRAPI_NDIS_DEVICE *lpDeviceList, long i,
CHAR lpszDeviceName, LONG lenDeviceName,
CHAR lpszDeviceDesc, LONG lenDeviceDesc)
if (!lpDeviceList)
return ERROR_INV_PARAMETER;
if (lpDeviceList[i].pDeviceName)
WideCharToMultiByte(CP_ACP, 0,
pDeviceList[i].pDeviceName, -1,
lpszDeviceName, lenDeviceName,
NULL, NULL);
if (lpDeviceList[i].pDeviceName)
WideCharToMultiByte(CP_ACP, 0,
pDeviceList[i].pDeviceDescription, -1,
lpszDeviceDesc, lenDeviceDesc,
NULL, NULL);
return NO_ERROR;
Pass the int32 you got from the first parameter of the previous call as
a simple int32 passed by value to this function (and make sure you don't
call this function with a higher index than (plItems - 1) returned from
the first function.
Rolf Kalbermatter
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

How to call javascript function from PL/SQL procedure

Can anybody advice me how to call javascript function from PL/SQL procedure in APEX?

Hi,
I have a requirement to call Javascript function inside a After Submit Process.
clear requirement below:
1. User selects set of check boxes [ say user want to save 10 files and ticks 10 checkboxes]
2. user clicks on "save files" button
3. Inside a After submit process, in a loop, i want to call a javascript function for each of the file user want to save with the filename as a parameter.
Hope this clarify U.
Krishna.

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

Calling user function from Interface mapping

I am getting error "Bad query:ORA-00904: invalid identifier" while calling function in the mapping of an interface.
Can some one provide the syntax of calling user function from interface mapping.
Thanks,
RP

user452108 wrote:
Can some one provide the syntax of calling user function from interface mapping.Oracle's Call Iinterface, the OCI, does not work differently when coding using a Dvorak keyboard, or writing code using a pretty pink font in the editor.. or coding the call from an interface mapping (whatever the hell that that is).
You have 2 types of calls. SQL and PL/SQL.
To call a function via SQL, it can be done using a the standard cursor interface. E.g.
select MyFunkyFunction from dualIt will return the function value via a single row with a single column. The standard cursor fetch and close cursor calls are used.
To call it via PL/SQL, an anonymous PL/SQL block is needed, and the caller needs to use a bind variable to receive the value from the function. The anon block will look as follows:
begin
:bindVar := MyFunkyFunction;
end;Refer to your client's abstract layer for interfacing with the Oracle Call Interface, on how to deal with bind variables.

How to call oracle function from ejb3

i'm trying to call an oracle query-function from ejb3.
The oracle function:
create or replace FUNCTION getSecThreadCount(secId in NUMBER,avai in NUMBER)
RETURN SYS_REFCURSOR is cur SYS_REFCURSOR;
m_sql VARCHAR2(250);
BEGIN
m_sql:='select count(thrId) from thread where secId='|| secid||'
and thrAvai='|| avai;
open cur for m_sql;
return cur;
END;
I'v tried several ways to call it,but all failed:
1. the calling code:
public Object getSectionThreadCount(int secId,int avai){
 Query query=manager.createNativeQuery("{call getSecThreadCount(?,?) }");
 query.setParameter(1, secId);
 query.setParameter(2, avai);
 return query.getSingleResult();
but i got the exception:
Exception in thread "main" javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query; nested exception is: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
Caused by: java.sql.SQLException: ORA-06550: row 1, col 7:
PLS-00221: 'GETSECTHREADCOUNT' not procedure or not defined
ORA-06550: row 1, col 7:
PL/SQL: Statement ignored
2. the calling code:
@SqlResultSetMapping(name = "getSecThreadCount_Mapping")
@NamedNativeQuery(name = "getSecThreadCount",
query = "{?=call getSecThreadCount(:secId,:avai)}",
resultSetMapping = "getSecThreadCount_Mapping",
hints = {@QueryHint(name = "org.hibernate.callable", value = "true"),
 @QueryHint(name = "org.hibernate.readOnly", value = "true")})
public Object getSectionThreadCount(int secId,int avai){
 Query query=manager.createNamedQuery("getSecThreadCount");
 query.setParameter("secId", secId);
 query.setParameter("avai", avai);
 return query.getSingleResult();
but i run into the exception:
Exception in thread "main" javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query; nested exception is: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
Caused by: java.sql.SQLException: lost in index IN or OUT parameter:: 3
By the way, i have successfully called the function from hibernate. And i use oracle 11g, JBoss5 RC1.
Could anyone tell me how to call the function from EJB3?
Thanks.

Here's a working model:
package.procedure: (created in example schema scott)
CREATE OR REPLACE package body data_pkg as
type c_refcursor is ref cursor;
-- function that return all emps of a certain dept
function getEmployees ( p_deptId in number
return c_refcursor
is
 l_refcursor c_refcursor;
begin
 open l_refcursor
 for
 select e.empno as emp_id
 , e.ename as emp_name
 , e.job as emp_job
 , e.hiredate as emp_hiredate
 from emp e
 where e.DEPTNO = p_deptId;
 return l_refcursor;
end getEmployees;
end data_pkg;
/entity class:
package net.app.entity;
import java.io.Serializable;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedNativeQuery;
import javax.persistence.QueryHint;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
@SuppressWarnings("serial")
@Entity
@Table (name="emp")
@SequenceGenerator(name = "EmployeeSequence", sequenceName = "emp_seq")
@NamedNativeQuery( name = "getEmpsByDeptId"
 , query = "{ ? = call data_pkg.getEmployees(?)}"
 , resultClass = Employee.class
 , hints = { @QueryHint(name = "org.hibernate.callable", value = "true")
 , @QueryHint(name = "org.hibernate.readOnly", value = "true")
public class Employee implements Serializable
 @Id
 @Column(name="emp_id")
 @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "EmployeeSequence")
 private int id;
 @Column(name="emp_name")
 private String name;
 @Column(name="emp_job")
 private String job;
 @Column(name="emp_hiredate")
 private Date hiredate;
 // constructor
 public Employee (){}
 // getters and setters
 public int getId()
 return id;
etc...session bean:
package net.app.entity;
import java.util.ArrayList;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import net.app.entity.Employee;
import net.app.iface.ScottAdmin;
@Stateless
public class ScottAdminImpl implements ScottAdmin
 @PersistenceContext
 private EntityManager entityManager;
 @SuppressWarnings("unchecked")
 public List<Employee> getEmployeesByDeptId(int deptId)
 ArrayList<Employee> empList;
 try
 Query query = entityManager.createNamedQuery("getEmpsByDeptId");
 query.setParameter(1, deptId);
 empList = (ArrayList<Employee>) query.getResultList();
 return empList;
 catch (Exception e)
 e.printStackTrace(System.out);
 return null;
}client:
package net.app.client;
import java.util.List;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import net.app.entity.Employee;
import net.app.iface.ScottAdmin;
public class ScottClient
 public static void main(String[] args)
 try
 // create local interface
 InitialContext ctx = new InitialContext();
 ScottAdmin adminInterface = (ScottAdmin) ctx.lookup("ScottAdminImpl/remote");
 // select employees by deptno
 int deptno = 20;
 List<Employee> empList = adminInterface.getEmployeesByDeptId(deptno);
 // output
 System.out.println("Listing employees:");
 for (Employee emp : empList)
 System.out.println(emp.getId() + ": " + emp.getName() + ", " + emp.getJob() + ", " + emp.getHiredate());
 catch (NamingException e)
 e.printStackTrace(System.out);
}Basically you just ignore the refcursor outbound parameter.
This is a stored function, have yet to try outbound refcursor parameters in stored procedures...
Edited by: _Locutus on Apr 2, 2009 2:37 PM

Calling a function from SQL prompt that returns a record

Hi,
I've been trying to execute a function that is present on a different database. for eg. I am loged on to a database say 'A' and trying to execute a function present in database 'B'. this function is present in a package 'X' which has 2 functions and two procedures. From the packages i am able to execute the two procedures and one of the function.
So i guess it is not a problem with the access permissions. The function that i am trying to call say function I has got 3 OUT
parameters and 1 IN parameter. the Function returns a record. When i try to execute this function i get an error. Can you please let me know as to how exactly i need to call this function from the SQL prompt...
thanx in advance
null

Hi Anand,
As your function has 3 OUT parameters and it returns a record you can not just call it from SQL Plus. You need to write small PL/SQL program and use variables to hold the OUT values and the returned record.
Good Luck,
RajKiran
null

Calling a function from within a movieclip

How do I do this, and Is it wrong to do it this way?
I have a movieclip on the timeline and within that movieclip
it has buttons which I've placed listeners. I'm doing it this way
rather than putting the code in the document class because the
buttons don't appear right away in the movieclip (not until around
frame 10). The function is defined in the document class because it
is used with other movieclips.
Anyone have an idea on how to properly do this?

Well, I'm at least not getting an error - however, nothing is
happening when I click the button to call the function (which is
indeed public). Inside the function is a simple trace. I've even
added a param to the function just for fun, and there's no error
when calling the function from the button.

Calling a function from a custom component

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