Web dynpro dc compoent controller method call from Java dc class file

Hi All,
Is it possible to call a wd java component controller method from a java dc class file?
I have declared wd java dc as used dc in java dc.Any poiters for the same would be really helpful.
Thanks in Advance.
regards
Radhika Kuthiala

Hi,
short answer: No.
1. using WD references outside of WD DCs is unsupported and will at least show a warning when you try to deploy. Correct usage of runtime dependencies is not predictable.
2. WebDynpro Controllers have a lifecycle that is controlled by the Framework. Even if you manage to initialize a Controller via "new" and use a method, the Controller will never have all the state-information it contains when started regualary. (think of mapped context, context attributes in general, code called in wdInit ...) I would suppose it is possible to implement a runnable low-profile example that still works, but as soon as you try to use "higher" concepts of WD (which would be the only reason to use a WD Component Controller at all), you will definitely fail.
3. Think of it as calling EJBs Session Beans via "new", but more complex.
hope that helps
Jan

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I am trying to call a java method from c passing a String as an argument.
my C code is as follows.
//Initalise jstring and class (to recieve String)
jstring textp;
jclass texts = (*env)->GetObjectClass(env, obj);
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(*env)->CallVoidMethod(env, obj, text,textp);
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public void texture(String texturePath){
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SIGSEGV 11 segmentation violation
si_signo [11]: SEGV
si_errno [0]:
si_code [1]: SEGV_MAPERR [addr: 0xc]
stackpointer=FFBED790
"Screen Updater" (TID:0x4f9060, sys_thread_t:0x4f8f98, state:CW, thread_t: t@11, threadID:0xf2d31d78, stack_bottom:0xf2d32000, stack_size:0x20000) prio=4
[1] java.lang.Object.wait(Object.java:424)
[2] sun.awt.ScreenUpdater.nextEntry(ScreenUpdater.java:78)
[3] sun.awt.ScreenUpdater.run(ScreenUpdater.java:98)
"AWT-Motif" (TID:0x40be50, sys_thread_t:0x40bd88, state:R, thread_t: t@10, threadID:0xf2d71d78, stack_bottom:0xf2d72000, stack_size:0x20000) prio=5
[1] sun.awt.motif.MToolkit.run(Native Method)
[2] java.lang.Thread.run(Thread.java:479)
"SunToolkit.PostEventQueue-0" (TID:0x431950, sys_thread_t:0x431888, state:CW, thread_t: t@9, threadID:0xf2e71d78, stack_bottom:0xf2e72000, stack_size:0x20000) prio=5
[1] java.lang.Object.wait(Object.java:424)
[2] sun.awt.PostEventQueue.run(SunToolkit.java:407)
"AWT-EventQueue-0" (TID:0x430ea8, sys_thread_t:0x430de0, state:CW, thread_t: t@8, threadID:0xf3071d78, stack_bottom:0xf3072000, stack_size:0x20000) prio=6
[1] java.lang.Object.wait(Object.java:424)
[2] java.awt.EventQueue.getNextEvent(EventQueue.java:212)
[3] java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:100)
[4] java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:91)
[5] java.awt.EventDispatchThread.run(EventDispatchThread.java:83)
Exiting Thread (sys_thread_t:0xff343db0) : no stack
"Finalizer" (TID:0x154e98, sys_thread_t:0x154dd0, state:CW, thread_t: t@6, threadID:0xfe391d78, stack_bottom:0xfe392000, stack_size:0x20000) prio=8
[1] java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:146)
[2] java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:168)
[3] java.lang.ref.Finalizer$FinalizerWorker$FinalizerThread.run(Finalizer.java:124)
"Reference Handler" (TID:0x1506a0, sys_thread_t:0x1505d8, state:CW, thread_t: t@5, threadID:0xfe3c1d78, stack_bottom:0xfe3c2000, stack_size:0x20000) prio=10
[1] java.lang.Object.wait(Object.java:424)
[2] java.lang.ref.Reference$ReferenceHandler.run(Reference.java:130)
"Signal dispatcher" (TID:0x13d180, sys_thread_t:0x13d0b8, state:MW, thread_t: t@4, threadID:0xfe3f1d78, stack_bottom:0xfe3f2000, stack_size:0x20000) prio=10
"main" (TID:0x38918, sys_thread_t:0x38850, state:R, thread_t: t@1, threadID:0x25228, stack_bottom:0xffbf0000, stack_size:0x800000) prio=5 *current thread*
[1] loader.Callbacks.nativeMethod(Native Method)
[2] loader.Callbacks.main(Callbacks.java:184)
[3] graphics.GR_MakeTrack.init(GR_MakeTrack.java:60)
[4] graphics.GR_MakeTrack.main2(GR_MakeTrack.java:49)
[5] graphics.GR_MakeTrack.main(GR_MakeTrack.java:41)
[6] control.GE_main.GE_main1(GE_main.java:87)
[7] control.GE_main.main(GE_main.java:66)
gmake: *** [run] Abort (core dumped)

I am trying to call a java method from c passing a
String as an argument.
my C code is as follows.
//Initalise jstring and class (to recieve String)
jstring textp;
jclass texts = (*env)->GetObjectClass(env, obj);
jmethodID text = (*env)->GetMethodID(env, texts,
"texture", "([Ljava/lang/String;)V");
Hi Pete,
your problem is that the method texture you are trying to find does not exist. If you look carefully at your declaration of the method signature in the GetMethodID call you will see "([Ljava/lang/String;)V" which is trying to find a method that accepts a String array as its parameter. Remove the [ from the method signature and it should work ok. You might want to test text (jmethodID) for NULL or 0 before trying to call it as well.

Clarification on application method calls from backing bean.

Hi Experts ,
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allication module method name : addRowValidUnitInfo
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1.
BindingContainer bindings1 =
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OperationBinding serialModelDetails =
bindings1.getOperationBinding("addRowValidUnitInfo");
serialModelDetails.getParamsMap().put("serialNumber",
serialNumber.getValue().toString());
serialModelDetails.getParamsMap().put("modelNumber",
modelNumber.getValue().toString());
serialModelDetails.execute();
String result =serialModelDetails.getResult().toString();
2.
EWarrantyAdminModule appModule =(EWarrantyAdminModule)
Configuration.createRootApplicationModule(amDef,config);
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String result = appModule.addRowValidUnitInfo(serialNumber.getValue().toString(), modelNumber.getValue().toString());
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finally {
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Can any one tell me which one gives best performance and which one should be used in which situations.
For me both are working fine but just want to know whcih is the best practice and which gives best performance.
Regards
Gayaz

The approach 1 is the right way.
Reasons:
1) With Approach 2 - you are creating new ApplicationModule on the fly and release it at the end of the request. If you are invoking multiple method calls, you need to the same for each & every call.
This is not reusing the existing application module.
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Read this blog post from Jobinesh (which indirectly distinguishes both these approaches).
http://jobinesh.blogspot.com/2010/04/invoking-applicationmodule-from-servlet.html
Thanks,
Navaneeth

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Hi Experts,
I have a select option in my ABAP Webdynpro application. My requirement is to give the "upload from clipboard" functionality for this select option as it is possible in normal R3. Please help me on this issue as it is client requirement.
Thank you in advance.
Narendra

Narendranath Reddy wrote:
Hello Thomos,
> thanks for your valuable reply.
>
> I found the clipboard button in WDR_SELECT_OPTIONS component which is disabled. Is it possible to enable that button using
> enhancement and write the code as required ?
>
> Thanks & regards
> Narendra
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Hi Again
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Sriram

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Hi,
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3)
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{color:#0000ff}
Doubt: Do I need to declare ArrayDescriptors to retrieve the VArray from the Plsql procedure.
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ARRAY SimpleOUTArray = (ARRAY) ((OracleCallableStatement) dbCallableStatement).
getObject(Integer.parseInt(arlParameterOutIndex.get(i).toString()));{color}
I am unable to realize where the mistake is?
{color:#800000}
{color}{color:#800000}
VARRAY AND PROC DETAILS:
TYPE STRUCT_JOB_DETAILS AS OBJECT
APPL_NO NUMBER (10),
S_FNAME VARCHAR2 (32 Byte),
S_MI VARCHAR2 (32 Byte),
S_LNAME VARCHAR2 (32 Byte),
APPL_DATE DATE,
DESCRIPTION VARCHAR2 (100 Byte),
S_UCID VARCHAR2 (8 Byte)
TYPE VARRAY_JOB_DETAILS IS VARRAY(100) OF STRUCT_JOB_DETAILS;{color}
{color:#800000}PROCEDURE:{color}
{color:#800000}CREATE OR REPLACE PACKAGE PACK_SEMSADMIN_OFFEREDJOBS
AS
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AS
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ic_status IN VARCHAR2,
or_offered_jobs OUT Generic_Cursor_Type,
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APPL_NO NUMBER (10),
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S_MI VARCHAR2 (32),
S_LNAME VARCHAR2 (32),
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S_UCID VARCHAR2 (8)
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vc_query_1 := '';
vc_query_1 := vc_query_1 || ' SELECT stud_apps.appl_no APPL_NO, stud_apps.s_fname S_FNAME, ';
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vc_query_1 := vc_query_1 || ' stud_apps.s_ucid S_UCID ' ;
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vc_query_1 := vc_query_1 || ' WHERE stud_apps.status in (''o'',''t'') '; --(' || ic_status || ') ' ;
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vc_query_1 := vc_query_1 || ' AND jbs.status not in (''z '', ''Z'')' ;
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vc_query_1 := vc_query_1 || ' AND look_up.type = ''st''' ;
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END PACK_SEMSADMIN_OFFEREDJOBS;
/{color}
Reqire help plzzzz !!!
Thanks.

Originally posted by JDBC Development Team:
It's very similar to other datatype except that it uses OracleTypes.ARRAY typecode and the value is mapped to a oracle.sql.ARRAY instance. The code looks as follows --
cstmt.registerOutParameter (idx, OracleTypes.ARRAY, "VARRAY_TYPE_NAME_HERE");
cstmt.execute ();
ARRAY array = (ARRAY) cstmt.getObject (idx);
Thanks for your reply.
I have to use:-
OracleCallableStatement cs1 = (OracleCallableStatement )conn.prepareCall
( "{call proj_array(?)}" ) ;
for retrieving a collection as an OUT parameter.
This gives me the errors:-
C:\jdbc\VarraySQL.java:0: The method oracle.jdbc2.Blob getBlob(int) declared in class oracle.jdbc.driver.OracleCallableStatement cannot override the method of the same signature declared in interface java.sql.CallableStatement. They must have the same return type.
import java.sql.*;
^
C:\jdbc\VarraySQL.java:0: The method oracle.jdbc2.Array getArray(int) declared in class oracle.jdbc.driver.OracleCallableStatement cannot override the method of the same signature declared in interface java.sql.CallableStatement. They must have the same return type.
import java.sql.*;
^
C:\jdbc\VarraySQL.java:0: The method oracle.jdbc2.Clob getClob(int) declared in class oracle.jdbc.driver.OracleCallableStatement cannot override the method of the same signature declared in interface java.sql.CallableStatement. They must have the same return type.
import java.sql.*;
^
C:\jdbc\VarraySQL.java:0: The method oracle.jdbc2.Ref getRef(int) declared in class oracle.jdbc.driver.OracleCallableStatement cannot override the method of the same signature declared in interface java.sql.CallableStatement. They must have the same return type.
import java.sql.*;
^
How do I get rid of these errors?
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