Limiting the accessibility of a field ...

A private field is inaccessible from anywhere outside the class and a protected field is accessible from anywhere in the same package.
Is there a way of making a field accessible to just the class and its derivatives? That is, can I get the behaviour of protected in C++?

Hi,
In the JDK 1.0, there was a "private method" modifier which allowed you to make the field accessible to only the class and its derivates. This was however considered a bug and is removed.
What you could do -and I don't recommand this- is declare your field as private and create a protected getter method in which you pass a reference from the calling object. You can then check wether this calling object is an instance of "this" (with "instanceof").
If you don't want to pass a reference in the getter method, you could pass a reference in the object constructor and assign this to a private object.
A last possible solution I can think of is create an Exception in your getter method (create one, not throw one), print and parse it's stack trace yourself to determine wether the calling object is an instance of "this".
I think you should first determine wether you absolutely need this.
Regards,
Kurt.

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Dear Experts,
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Instead of hampering the existing Streamlined Roles, looking for other Options since if it may give odd behaviour after modifying the Roles then all the Users across the continents will be effected.
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Thank you Sebastian & Terence,
The Global Roles has maintained with Authorization Object (S_LAYO_ALV) and these are been assigned to Every User coz all Users should access these reports.
So now every User has maintained with the Authorization Object to access.
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hello,
basis has to assign the proper activity with object A_S_ANLKL. in this case they have to allow activity 03 only with combination of Cocode,asset class. see some more details below.
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OSS note 160892
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Hello All,
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FUNCTION z_39181_dyn_fs_60758.
""Local interface:
*" IMPORTING
*"     REFERENCE(PARAMETER) TYPE VBELN
*" TABLES
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BREAK-POINT.
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FIELD-SYMBOLS <fs1> TYPE ANY.
FIELD-SYMBOLS <fstab> TYPE ANY TABLE.
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FIELD-SYMBOLS <f> TYPE ANY.
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DATA: lv_lipsfld TYPE string,
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CREATE DATA dref TYPE STANDARD TABLE OF (lv_lips).
CREATE DATA dref2 LIKE LINE OF data_tab.
ASSIGN dref->* TO <fstab>.
ASSIGN dref1->* TO <fs>.
assign dref2->* to <fs
<fstab> = data_tab[].
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Helpful answers will be rewarded...

Use syntax
ASSIGN COMPONENT name OF STRUCTURE struc TO <fs>.

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How to limit the access of a transaction

please provide hw to create an authorization object... like hw to limit the access of a particular userdefined trasaction to a particular user

hi
good
Element of the authorization concept.
Authorization objects allow you to define complex authorizations.
An authorization object groups together up to 10 authorization fields in an AND relationship in order to check whether a user is allowed to perform a certain action.
To pass an authorization test for an object, the user must satisfy the authorization check for each field in the object.
http://help.sap.com/saphelp_nw04s/helpdata/en/52/671285439b11d1896f0000e8322d00/content.htm
Basic form->
AUTHORITY-CHECK OBJECT object
ID name1 FIELD f1
ID name2 FIELD f2
ID name10 FIELD f10.
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Check whether the user is authorized for a particular plant. In this case, the following authorization object applies:
Table OBJ : Definition of authorization object
M_EINF_WRK
ACTVT
WERKS
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M_EINF_WRK_BERECH1
ACTVT 01-03
WERKS 0001-0003 .
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Such a user would thus pass the checks
AUTHORITY-CHECK OBJECT 'M_EINF_WRK'
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AUTHORITY-CHECK OBJECT 'M_EINF_WRK'
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but would fail the check
AUTHORITY-CHECK OBJECT 'M_EINF_WRK'
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Run Time Error - You attempted to access an unassigned field s

Dear All
I created a report to display purchase order history. there is no syntax error.but runtime which i have pasted below.
help me to find the error.
Runtime Errors         GETWA_NOT_ASSIGNED
Date and Time          26.02.2008 06:25:56
Short text
     Field symbol has not yet been assigned.
Error analysis
     You attempted to access an unassigned field s
     (data segment 32820).
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     - You address a typed field symbol before it
       ASSIGN
     - You address a field symbol that pointed to
       internal table that was deleted
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       UNASSIGN or that pointed to a local field t
       longer exists
     - You address a global function interface, al
       respective function module is not active -
       not in the list of active calls. The list o
       can be taken from this short dump.
Trigger Location of Runtime Error
    Program                                 SAPLSLVC
    Include                                 LSLVCF36
    Row                                     3.176
    Module type                             (FORM)
    Module Name                             FILL_DATA_TABLE
Source Code Extract
Line SourceCde
3146                               alv_style_align_center_top.
3147         endif.
3148
3149         append ls_lvc_data to ct_lvc_data.
3150       endif.
3151
3152 ************************************
3153 * Column per Fieldcat Entry
3154 ************************************
3155       loop at it_fcat_local assigning <ls_fcat>.
3156         clear: ls_lvc_data-href_hndl,
3157                ls_lvc_data-drdn_hndl,
3157                ls_lvc_data-drdn_hndl,
3158                ls_lvc_data-style,
3159                ls_lvc_data-style2,
3160                ls_lvc_data-style3,
3161                ls_lvc_data-style4,
3162                ls_lvc_data-maxlen.
3163
3164         clear: lt_color_lvc, lt_color_slis.
3165
3166         add 1 to ls_lvc_data-col_pos.
3167
3168         if not <ls_fcat>-indx_field is initial.
3169           assign component <ls_fcat>-indx_field
3170                            of structure <ls_data> to <l_field_value>.
3171         else.
3172           assign component <ls_fcat>-fieldname
3173                            of structure <ls_data> to <l_field_value>.
3174         endif.
3175
>>>>         macro_cell_data_get
3177           <ls_fcat>
3178           <ls_data>
3179           <l_field_value>
3180           ls_lvc_data-value.
3181
3182 *>>> new API
3183         if ir_salv_adapter is bound.
3184           clear ls_lvc_data-style.
3185
3186 * color
3187           if g_gui_type ne 1.
3188             if <ls_fcat>-key eq abap_true.
3189               ls_lvc_data-style = alv_style_color_int_key.
3190             elseif l_style_color is initial
3191                   and ( <ls_fcat>-emphasize is initial or
3192                         <ls_fcat>-emphasize = '$' ).
3193               if <ls_stin>-counter is initial.
3194                 ls_lvc_data-style = alv_style_color_normal.
3195               else.

Hi
You are getting the dump because you have not populated the field catalog properly. There will be some mistake in the structure which you are using. Kindly check the same.
THanks
Vijay
<REMOVED BY MODERATOR>
Edited by: Alvaro Tejada Galindo on Feb 26, 2008 12:41 PM

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Paul Mather | Twitter |
http://pwmather.wordpress.com | CPS

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