Select object member function problem

I use RDBMS 10.2.0.1.0
SQL> CREATE OR REPLACE TYPE foo AS OBJECT
2 (
3 dummy NUMBER,
4 MEMBER FUNCTION to_str RETURN VARCHAR2,
5 PRAGMA RESTRICT_REFERENCES(to_str, WNDS)
6 );
7 /
Type created
SQL>
SQL> CREATE OR REPLACE TYPE BODY foo
2 IS
3 MEMBER FUNCTION to_str RETURN VARCHAR2
4 IS
5 BEGIN
6 RETURN 'test';
7 END;
8 END;
9 /
Type body created
SQL>
SQL> CREATE TABLE test_foo
2 (foo_field foo);
Table created
SQL>
SQL> INSERT INTO test_foo
2 VALUES (foo(1));
1 row inserted
SQL> select * from test_foo;
FOO_FIELD
<Object>
SQL> SELECT foo_field.to_str FROM test_foo;
SELECT foo_field.to_str FROM test_foo
ORA-00904: "FOO_FIELD"."TO_STR": invalid identifier
Where is a problem? What's wrong?

SELECT t.foo_field.to_str() FROM test_foo t;Best regards
Maxim

Similar Messages

Cannot call member function on object type

On 8.1.6 I cannot call a member function from SQL in the way described in the manual.
The following example is almost copied from the manual:
create or replace TYPE foo AS OBJECT (a1 NUMBER,
MEMBER FUNCTION getbar RETURN NUMBER);
create or replace type body foo is
MEMBER FUNCTION getbar RETURN NUMBER is
begin
return 45;
end;
end;
CREATE TABLE footab(col foo);
SELECT col,foo.getbar(col) FROM footab; -- OK
select col,col.getbar() from footab; -- ERROR
The second select is the way it should be, but I get an error "invalid column name".
Using the first select, I get the result. This is strange because this is more or less the 'static member' notation (filling in the implicit self parameter myself).
Is this a known bug in 8.1.6, maybe fixed in later versions?

Konstantin,
Did you use loadjava to load the compiled class into the Oracle Database?
Regards,
Geoff
Hello!
I need to write a member function for object type with java.
for example:
create type test as object(
id number,
name varchar2(20),
member function hallo return number);
create type body test as
member function hallo return number
as language java
name 'test.hallo() return int;
create table test of test;
My java-file is:
public class test {
public int hallo() {
return 5;
select t.hallo() from test t;
It's does not run. Why?
I get always an error back. Wrong types or numbers of parameters!!
please help me.
thanks in advance
Konstantin

Object view with nested table and member functions????????????????

HI frds:)
I need some help regarding writeing soem queries..
I have to use view in retreving data and by useing member functions of object.
1) i have to create a nested table by useing type object.
2) i have to create a object wtih member functions inorder to create view of taht nested table,.
3) by useing this objectt view and by useing methods i have to write soem queries ...
If any one know or any information regarding this please reply me... as i have searched in net alot but i was unable to figure out..
Thanks....

// first createing object
create type emp_det as object
(empname varcahr2(20),start_date date,end_date date);
// creating table of that object
create table emp_detai_table as table of emp_det;
// creating nested table
create table empl (emp_no number,emp_detail emp_detail_table,dep_no number)nested table emp_detail store as s;
//now i want to create view.. inorder to create view i need to create object. in that object i want to create methods.. these methods should work with date attributes..
after creating object view i need to select or write some queries by useing member methods..
This is the tast i have to perform.,. i have no materials ...if u have any link ..forward me..
i have to do it as soon as possible..
waiting for your reply...

Oracle8i Object-Relational Features Problem(How to manipulate value by Member Method)

sorry ~ I've never use 8iLite before, but I really want to figure out this !
How can I create a Object Table , define Member Functions to change it's self
attribute value ~
for example :
CREATE OR REPLACE TYPE HumanType AUTHID CURRENT_USER AS OBJECT (
id NUMBER(3,0),
name VARCHAR(4),
age NUMBER(3,0),
MEMBER FUNCTION getName RETURN VARCHAR2,
MEMBER Procedure ageChange(c_age IN NUMBER)
CREATE OR REPLACE TYPE BODY HumanType AS
MEMBER FUNCTION getName RETURN VARCHAR2 IS
BEGIN
RETURN (SELF.name);
END;
MEMBER PROCEDURE ageChange(c_age IN NUMBER) IS
age NUMBER;
BEGIN
age:=age+c_age;
END;
END;
CREATE TABLE MAN OF HumanType;
There is one record in MAN table.
ID NAME AGE
1 VIC 21
in SQLplus I command
SQL> SELECT m.agechange(5) FROM MAN m WHERE ID=1;
THE ERROR MESSAGE IS :
ERROR AT LINE1;
ORA-06553: PLS-222: no function with name 'AGECHANGE' exists in this scope
Q1.WHY CAN'T I USE the Member Method to Change the Value of itself ?
Q2.Is there any other site can discuss Oracle Object-Relational Feature ?
Thank you very much!

hi,
u r trying to return values but u r using procedure. that's first mistake
then u declared variable called age in proc. from where does the age value comes. do u assume it will take column value. if so its wrong.
start trying with simple examples
ex: CREATE OR REPLACE TYPE HumanType AS OBJECT (
id NUMBER(3,0),
name VARCHAR(4),
age NUMBER(3,0),
MEMBER FUNCTION ageChange(c_age IN NUMBER) RETURN NUMBER
CREATE OR REPLACE TYPE BODY HumanType AS
MEMBER FUNCTION ageChange(c_age IN NUMBER) RETURN NUMBER IS
age NUMBER;
BEGIN
age:=age+c_age;
RETURN AGE;
END;
END;
now try with ur sql stt
since there is no value for variable age it will be treated as null and the result will be : null. it won't give error
try this.
if u have oracle 8 complete reference book refer pages 628 to 630.
ie. Methods, creating metods.

Service template problem - Unable to perform the job because one or more of the selected objects are locked by another job - ID 2606

Hello,
I’ve finally managed to deploy my first guest cluster with a shared VHDX using a service template.
So, I now want to try and update my service template. However, whenever I try to do anything with it, in the services section, I receive the error:
Unable to perform the job because one or more of the selected objects are locked by another job. To find out which job is locking the object, in the jobs view, group by status, and find the running or cancelling job for the object. ID 2606
Well I tried that and there doesn’t seem to be a job locking the object. Both the cluster nodes appear to be up and running, and I can’t see a problem with it at all. I tried running the following query in SQL:
SELECT * FROM [VirtualManagerDB].[dbo].[tbl_VMM_Lock] where TaskID='Task_GUID'
but all this gives me is an error that says - conversion failed when converting from a character string to uniqueidentifier msg 8169, level 16, State 2, Line 1
I'm no SQL expert as you can probably tell, but I'd prefer not to deploy another service template in case this issue occurs again.
Can anyone help?

No one else had this?

Member function and member procedure inside an object type in Oracle.

Hi All,
Please do have a look at these codes and help me understand. I have no idea about this member function and member procedure. How do they work? Please explain me about this.
Regards,
BS2012
create type foo_type as object (
foo number,
member procedure proc(p in number),
member function func(p in number) return number
create type body foo_type as
member procedure proc(p in number) is begin
    foo := p*2;
end proc;
member function func(p in number) return number is begin
    return foo/p;
end func;
end;
/

Methods are just like functions or procedures in a package, except they're not in a package, their part of an object type.
The object has attributes (which are the variables declared in it).
To use such an object you would do things like this...
SQL> set serverout on
SQL>
SQL> declare
2    v_foo foo_type;
3    v_val number;
4 begin
5    v_foo := foo_type(20); -- instantiate the object and initialize the object attributes
6    v_foo.proc(20); -- call the object method (proc)
7    v_val := v_foo.func(4); -- call the object method (func)
8    dbms_output.put_line(v_val);
9 end;
10 /
10
PL/SQL procedure successfully completed.The Type definition you've declared creates the object class, but not actually an object itself.
To actually have an object you need to declare a variable of that object class type, and then instantiate it. When you instantiate the object you need to initialize all the attributes (generally you can pass null if required for each of them to initialize them).
Once you have your object instantiated, you can call the methods within that object as demonstrated above, a bit like calling functions and procedures in a package, except they are methods within the object type itself, and therefore called directly by referencing them from the variable.
The documentation goes into a lot more detail of objects if you look it up.

Not able to get distict values even after defining MAP MEMBER FUNCTION

Hi,
I am trying to get distinct values from a query to a table type. Please see the code below
CREATE OR REPLACE TYPE T_COPY_EVNT_DTL
IS
OBJECT
    eventId               VARCHAR2(100),
    eventDescription      VARCHAR2(100),
    promoMonthDescription VARCHAR2(100),
    promoStartDate        VARCHAR2(100),
    promoEndDate          VARCHAR2(100),
    PROMOCOSTSTARTDATE    VARCHAR2(100) ,
    MAP MEMBER FUNCTION sort_key
    RETURN VARCHAR2 );
CREATE OR REPLACE TYPE BODY T_COPY_EVNT_DTL
AS
MAP MEMBER FUNCTION sort_key
RETURN VARCHAR2
IS
BEGIN
RETURN eventId ;
END;
END;
CREATE OR REPLACE TYPE T_EVENT_TABLE
IS
TABLE OF T_COPY_EVNT_DTL;
          with event_data as (
select '1' event,'event1' event_desc,'monthdesc1' promo_month_desc ,'01/01/2001' promo_start_date     ,'01/01/2002' promo_end_date,'01/02/2001' promo_cost_start_date from dual union all
select '1' event,'event1' event_desc ,'monthdesc1'promo_month_desc ,'01/01/2001' promo_start_date     ,'01/01/2002' promo_end_date,'01/02/2001' promo_cost_start_date from dual union all
select '3' event,'desc3' event_desc ,'monthdesc3' promo_month_desc,'01/01/2001' promo_start_date     ,'01/01/2002' promo_end_date,'01/02/2001' promo_cost_start_date from dual union all
select '2' event ,'desc2' event_desc ,'monthdesc2' promo_month_desc ,'01/01/2001' promo_start_date     ,'01/01/2002' promo_end_date ,'01/02/2001' promo_cost_start_date from dual )
SELECT cast(collect(distinct t_copy_evnt_dtl(event,
                                                                                                                    event_desc,
                                                                                                                    promo_month_desc,
                                                                                                                    promo_start_date,
                                                                                                                   promo_end_date,
                                                                                                              promo_cost_start_date) ORDER BY
                                                            event_desc,
                                                            promo_month_desc,
                                                            promo_start_date,
                                                            promo_end_date,
                                                            promo_cost_start_date) as t_event_table) from event_data;
result :
T_EVENT_TABLE('T_COPY_EVNT_DTL('2','desc2','monthdesc2','01/01/2001','01/01/2002','01/02/2001')',
          'T_COPY_EVNT_DTL('3','desc3','monthdesc3','01/01/2001','01/01/2002','01/02/2001')',
          'T_COPY_EVNT_DTL('1','event1','monthdesc1','01/01/2001','01/01/2002','01/02/2001')',
          'T_COPY_EVNT_DTL('1','event1','monthdesc1','01/01/2001','01/01/2002','01/02/2001')')Please help me to find out the reason why it is not working...

Remove the comma from T_COPY_EVNT_DTL TYPE.
ORA-22800 indicates invalid user-defined type.
    PROMOCOSTSTARTDATE    VARCHAR2(100) ,
    MAP MEMBER FUNCTION sort_keyAnd it will be fine.
SQL> CREATE OR REPLACE TYPE T_COPY_EVNT_DTL
2 IS
3    OBJECT
4    (
5      eventId               VARCHAR2(100),
6      eventDescription      VARCHAR2(100),
7      promoMonthDescription VARCHAR2(100),
8      promoStartDate        VARCHAR2(100),
9      promoEndDate          VARCHAR2(100),
10      PROMOCOSTSTARTDATE    VARCHAR2(100),
11      --,
12      MAP MEMBER FUNCTION sort_key
13      RETURN VARCHAR2 );
14 /
Type created
SQL>
SQL> CREATE OR REPLACE TYPE BODY T_COPY_EVNT_DTL
2 AS
3    MAP MEMBER FUNCTION sort_key
4    RETURN VARCHAR2
5 IS
6 BEGIN
7    RETURN eventId ;
8 END;
9 END;
10 /
Type body created
SQL>
SQL> CREATE OR REPLACE TYPE T_EVENT_TABLE
2 IS
3    TABLE OF T_COPY_EVNT_DTL;
4 /
Type created
SQL>
SQL>     with event_data as (
2 select '1' event,'event1' event_desc,'monthdesc1' promo_month_desc ,'01/01/2001' promo_start_date ,'01/01/2002' promo_end_date,'01/02/2001' promo_cost_start_date from dual union all
3 select '1' event,'event1' event_desc ,'monthdesc1'promo_month_desc ,'01/01/2001' promo_start_date ,'01/01/2002' promo_end_date,'01/02/2001' promo_cost_start_date from dual union all
4 select '3' event,'desc3' event_desc ,'monthdesc3' promo_month_desc,'01/01/2001' promo_start_date ,'01/01/2002' promo_end_date,'01/02/2001' promo_cost_start_date from dual union all
5 select '2' event ,'desc2' event_desc ,'monthdesc2' promo_month_desc ,'01/01/2001' promo_start_date ,'01/01/2002' promo_end_date ,'01/02/2001' promo_cost_start_date from dual )
6 SELECT cast(collect(distinct t_copy_evnt_dtl(event,
7                                                 event_desc,
8                                                 promo_month_desc,
9                                                 promo_start_date,
10                                                promo_end_date,
11                                              promo_cost_start_date) ORDER BY
12                          event_desc,
13                          promo_month_desc,
14                          promo_start_date,
15                          promo_end_date,
16                          promo_cost_start_date) as t_event_table) from event_data;
CAST(COLLECT(DISTINCTT_COPY_EV
<Object>

Pass C++ Class Member Function as a callable function in AIR Native Extension

I'm writing an ANE and I'd like to know if anyone has been able to pass a C++ class member function pointer as a callable function from AIR? I have tried this so far with a little bit of C++11 trickery and it's crashing. I've also statically linked the libstdc++ into my library, according to the documentation, in order to ensure that these features I use work correctly. I have code like so:
FakeWorld* world = new FakeWorld();
*numFunctions = 1;
memberFunctions = (FRENamedFunction*) malloc(sizeof(FRENamedFunction) * (*numFunctions));
ANEMemberFunction mCreateFakeBody = std::tr1::bind(&FakeWorld::createFakeBody, world, std::tr1::placeholders::_1, std::tr1::placeholders::_2, std::tr1::placeholders::_3, std::tr1::placeholders::_4);
ANEFunction* createFakeBody = mCreateFakeBody.target<ANEFunction>();
memberFunctions[0].name = (const uint8_t*) "createFakeBody";
memberFunctions[0].functionData = NULL;
memberFunctions[0].function = createFakeBody;
FRESetContextNativeData(ctx, (void*)world);
I just realized I'm using C here for allocating the member functions array.. silly me, but I don't think this is the cause of my issue. I refuse to believe that Adobe has built to the Native Extensions portion of the runtime in such a way that I have to cram every single function I want to create (natively) into a global, C formatted namespace (Especially since the documentation says that C is only required for the extenion and context initializing function interfacing and the rest of the code can be done in C++ or objective-C). So please let me know if and how this is possible and I thank you so much in advance for your time!P.
P.S. Currently when I run this code, I can do the object initialization just fine. As soon as I invoke the "createFakeBody" method on the native side, the runtime dies and simply says:
Problem signature:
Problem Event Name: BEX
Application Name: adl.exe
Application Version: 3.1.0.4880
Application Timestamp: 4eb7612e
Fault Module Name: StackHash_0a9e
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 00000000
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789
Read our privacy statement online:
http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409
If the online privacy statement is not available, please read our privacy statement offline:
C:\Windows\system32\en-US\erofflps.txt
Thanks again for your assitance.

It's been a little while since i've dealt with C++ and not up to speed on tr1 or C++0x, so forgive me if i'm not helping.
The the examples of std::tr1::bind that i'm seeing out there seem to be either dereferencing the bound 'this' pointer when creating the bound method, i.e. in your case *world instead of world, or using std::tr1::ref(*world), therefore i believe that bind expects the bound parameters to be passed by reference.
Given that the result of std::tr1::bind is callable (basing that on http://stackoverflow.com/questions/3678884/virtual-member-functions-and-stdtr1function-how -does-this-work) could you simplify to the following:
memberFunctions[0].name = (const uint8_t*) "createFakeBody";
memberFunctions[0].functionData = NULL;
memberFunctions[0].function = std::tr1::bind(&FakeWorld::createFakeBody, *world, std::tr1::placeholders::_1, std::tr1::placeholders::_2, std::tr1::placeholders::_3, std::tr1::placeholders::_4);
Or for an even simpler starting point, creating a test member function 'helloWorld' in FakeWorld that takes no arguments and using:
memberFunctions[0].name = (const uint8_t*) "helloWorld";
memberFunctions[0].functionData = NULL;
memberFunctions[0].function = std::tr1::bind(&FakeWorld::helloWorld, *world);
Hope this helps.

GetVariable() doesn't work in FireFox for object member variables

I'm trying to access Flash member variables from Javascript
using GetVariable. The following line of code works for IE but not
for Firefox:
var variable = swf.GetVariable("someObject.someProperty");
In IE, the GetVariable() function returns the correct value
for the property. However in Firefox, the GetVariable() function
returns "null" when trying to access the property. If I just try to
access the object in Firefox (i.e. swf.GetVariable("someObject"), I
get a string back (instead of the object that I am expecting). If I
try to access a variable (such as a string) and not an object using
GetVariable(), this works in both Firefox and IE.
Any ideas what I am doing wrong? I suspect that my syntax for
accessing object member variables in Firefox is incorrect but I
have not been able to find any documentation on the correct syntax.
Any assistance would be greatly appreciated.
Thanks.

Thanks, but this isn't an issue.
The window.document.flashMovie will return the correct flash
object/embed flash movie.
The issue is that the GetVariable method wont return the
object variable. When you try to get an simple variable that is in
the _root timeline, it will return the value. Example:
movie.GetVariable(_url) will return the url of the flash
movie without any problem.
But when you create an ActionScript class with
userName property and then you will create the instance of
it in the _root, you should be able to get it's value. Example:
Flash:
var obj = new SomeClass();
obj.userName = "peter";
JavaScript:
movie.GetVariable("/obj:userName");
or
movie.GetVariable("obj.userName");
This will return
Peter for IE and null for Forefox/Opera.
The same when you use the document.embeds[..].

Help too selecting object [JS]

Hi there
I am problems selecting an object by it id or label. In my script a list items on on page and if the text are using ParagraphStyleName "Itembox 9" i save it in array.
But how do i select the object by id or label ?
I have to do this to make changes on the object later.
Does anyone know about good books on indesign scripting with javascript ?
Regards
TT.
test()
function test(){
var myDocument = app.documents.item(0);
var myElement = myDocument.pages.item(0).pageItems;
var myObjectsToSelect = new Array;
for(myItemCounter = 0; myItemCounter < myElement.length; myItemCounter ++){
      var myElementID = myElement[myItemCounter].id;
   try {
    var myTextParagraphStyleName = myElement[myItemCounter].parentStory.appliedParagraphStyle.name;
       if(myTextParagraphStyleName == "item_box_9"){
           $.writeln("Element Id ", myElementID);
          var myTextContents = myElement[myItemCounter].contents;
         $.writeln("Text ", myTextContents);
         myObjectsToSelect.push(myElementID);
      catch (Error) {
// error

In contrast with the interface, in scripting you rarely need to select objects in order to do something with them. You collect certain text frames in your array myObjectsToSelect. If e.g. you want to move them, you'd do something like this:
for (i = 0; i < myObjectsToSelect.length; i++)
    myObjectsToSelect[i].move (...);
What do you want to do with them?
Peter

Calling a Member Function from within a Cursor in a Procedure

Hello Folks
I'm a newbie to oracle and am in the process of learning 10G. My question is:
I created a type called row_po and defined a member function getCost() which returns the total cost of the order with line items as nested table, which i intend to call from within a procedure. In the procedure my SELECT returns multiple records and hence I need to use a cursor. For each record I've got to display the order_no, qty and order_cost (qty and order_cost are part of a line items nested table). I'm able to get to the order_no and qty but don't know how to call the member function to get the order_cost. Here's my procedure:
CREATE OR REPLACE PROCEDURE get_podet(part_num in number)
AS
CURSOR c2 is
SELECT *
FROM tab_po po, TABLE (po.LineItemList_nestab) L
WHERE L.PartNo = part_num;
BEGIN
FOR crec in c2 LOOP
DBMS_OUTPUT.PUT_LINE('ORDER NUMBER: ' || crec.PONo);
DBMS_OUTPUT.PUT_LINE('LINE QTY: ' || crec.Qty);
{color:#ff0000}*DBMS_OUTPUT.PUT_LINE('ORDER VALUE: ' || ''); -- order_cost which should be returned from the member function i've mentioned --*
{color}END LOOP;
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('Failed' || 'SQLCODE: ' || SQLCODE);
DBMS_OUTPUT.PUT_LINE('SQL ERROR MESSAGE ' || SQLERRM);
END;
The line in red is where i want to call my function getCost() which is a member of tab_po po as mentioned in my SELECT.
Any thoughts highly appreciated.
Thanks and Regards

One way would be to just run the query in a editor (sqlplus or toad) and see whats the column name.
Before that can you show us the structure of the type.
If you declare a table type without an object then the default column name is COLUMN_VALUE else the object filed name is taken.
Example without object in table type.
SQL> create or replace type tbl as table of integer
2 /
Type created.
SQL> create or replace function fn return tbl
2 as
3     ltbl tbl;
4 begin
5     select level bulk collect into ltbl
6       from dual
7    connect by level <= 10;
8
9     return ltbl;
10 end;
11 /
Function created.
SQL> select * from table(fn)
2 /
COLUMN_VALUE
           1
           2
           3
           4
           5
           6
           7
           8
           9
          10
10 rows selected.
Example with object in table type.
SQL> create or replace type obj as object(no integer)
2 /
Type created.
SQL> create or replace type tbl as table of obj
2 /
Type created.
SQL> edit
Wrote file afiedt.buf
1 create or replace function fn return tbl
2 as
3     ltbl tbl;
4 begin
5     select obj(level) bulk collect into ltbl
6       from dual
7    connect by level <= 10;
8     return ltbl;
9* end;
10 /
Function created.
SQL> select * from table(fn)
2 /
        NO
         1
         2
         3
         4
         5
         6
         7
         8
         9
        10
10 rows selected.Edited by: Karthick_Arp on Jan 13, 2009 5:00 AM

Reference to Class Member Functions

Hello all.
I have a question about references to LV class member functions. I have a small example to demonstrate my problem.
My test class Base implements a reentrant public dynamic dispatch member function, doSomething.vi.
Another test class, Child, inherits Base and overrides the implementation of doSomething.vi.
Now say I have an array of Base objects (which could include any objects from classes that inherit Base). I want to run the doSomething methods for all the objects in the array in parallel.
In C++, I'd define a pointer to the virtual member function doSomething, and use it with each object in the array and the correct version of doSomething would be called.
In Labview, the only way I've found to do it is like this:
This is less than ideal, because it relies on every child class implementing doSomething, and relies on specific names for the inputs to the method.
Is there a better way to do this?
Thank you,
Zola

I still suspect you are over-working this code and not leting LVOOP do tis thing.
As I understand it you want to creae an active object but detemine its class at run time. The recent Architect summit touched on messaging for what they are calling a "worker Pool" pattern or what-not. YOu may want to search on the summit stuff. lacking that I'll share some images of where I did something similar ( I think). Note this is an older app and new stuff like the "Start Asyncronous call..." has been introduced making this even easier.
I want to create a new Active Object (thread running in the background) so I invoke a method to do so
It invokes the following that create some queues for talking to it and getting info back.
Time does not permit me doing a complete write-up but I have assembled the above images into a LVOOP Albumn found here.
When you click on one of those images you will get a large view as shown in this example.
Just below that image you will find a link to the original thread where I posted the image and talked about it.
I believe the best I can do for you at the moment is to urge you to browse my albumn and chase the links.
That agllery was assembled in an attmept to help you and other before you asked. I hope it is helpful.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

[SOLVED] Passing a non-static member function as a function pointer

I need to pass a function pointer to a public method to a system call, nftw() to be precise.
I know that member functions don't match the required signature because of the hidden 'this' pointer, but
the only way to work around that is by using a small wrapper function that makes use of a global variable (the object of which I want to call the method).
Speaking in code, this is the way I've solved the problem currently:
// create a global variable here
static MyObject obj;
static int myObject_method_wrapper(const char *fpath, const struct stat *sb, int tflag, struct FTW *ftwbuf) {
return obj.handleDirEntry(fpath, sb, tflag, ftwbuf);
// somewhere in main()
nftw(walkroot, myObject_method_wrapper, 20, FTW_PHYS);
Now, my question: Can't this be done without a global instance of MyObject? It is pointed out here that other ways are existent, but sadly they are not mentioned.
Glad if someone could help me out!
Last edited by n0stradamus (2012-04-24 22:59:47)

I think you are stuck:
1. You are not in control of the interface (of nftw), and furthermore,
2. You are not in control of any of the parameters sent to the callback.
nftw has no idea which one of your objects it is supposed to reference, and
there's no apparent way to tell it.
But given this situation, are you sure it makes sense to use a non-static
member? It seems kind of strange to me-- any instance-specific data is
necessarily going to be independent of the function calls! So even if you
engineer something to avoid using a global, whatever you engineer is still
going to involve some *arbitrary* instance of your class (e.g. peterb's
solution, which uses the most recently created instance). The arbitrary-ness
doesn't feel right, since it sort of implicitly says that none of the instance
data is important. No important instance-specific data sounds like static...

It is possible select a member "field" editable/moveable with mouse?

I have diferent editable "field" on the stage.
If the "field" are only "editable" I can select every field with the mouse and write inside of it, but if I make them "editable/moveable" I can't select with the mouse any field but I can pass from one to other only with the key "TAB".
Do you know if there is a way to select every "Member field" that I want with mouse and without "Tab" when every field is set to editable/moveable?
Thank.

Still not sure about your intention, but maybe:
SQL> create or replace type test_obj as object
                  (s_name varchar2 (30),
                   member function test
                      return varchar2)
Type created.
SQL> create or replace type body test_obj
as
   member function test
      return varchar2
   is
      loc_name       varchar2 (30);
      t_obj test_obj;
   begin
      execute immediate 'select test_obj(''' ||s_name||''') from dual' into t_obj;        -- is it somehow possible to use s_name here - without using clause
      return t_obj.s_name;
   end;
end;
Type body created.
SQL> declare
   o_test         test_obj := test_obj ('testText');
begin
   dbms_output.put_line ('s_name: ' || o_test.test);
end;
s_name: testText
PL/SQL procedure successfully completed.

'select objects: click and drag to select several objects' doesn't work

I have recently upgraded to Office 2010, and have the same problem as
http://social.technet.microsoft.com/Forums/en-US/office2010/thread/75270638-e02b-4a78-b291-043abbca04ae?prof=required
When I use Select - Select Objects in the Editing part of the ribbon to select multiple drawing shapes, it no longer works like in office 2007. I can't drag a rectangle in the document to select objects within an area.
I would have guessed this is the same problem as the link I refer to, but I'm not running the beta version of 2010. It seems not to be solved.
Anything I can do to fix this?

I have just registered so I could reply to this thread.
The registration process was very ... aehm ... frustrating, I was only able to fill in the correct Captcha after about 10 ties. But ... this is not unexpected, when working with a Microsfoft product. How am I supposed to know whether that bloody captcha
wants me to to write '4Yp8' or '4yP8'. There is no way to tell. You can distinguish capital letters when it is something like A, a or H, h, but not between y and Y or P and p.
I would like to thank all the posters for suggested workarounds. They work. Kinda - sorta ... . I was able to finish the editing of large picture (consisting of many graphics objects) that HAS to be made in word (My boss said so). All your tips saved
me *hours* of frustration.
I would like to tell Microsoft programmers AND their managers, that *if* the quote in the second post is correct:
================
The work needed to make the object selection work as it did in Word 2007 was out of scope for this release. It's not as
simple as using the same feature that existed in the last version since we upgrading our graphics/art features; the way the shapes/objects need to be selected is different than how "old" graphics/art is selectable in Word 2007.
That said, the "select object" tool that exists in Word 2010 should allow you to select individual shapes. You can select
multiple shapes holding down the CTRL or SHIFT key while clicking shapes. You might ask how this is different than selecting shapes without turning on "select objects"; the answer to that would be to allow you to select shapes that are "behind" text, or more
easily select rotated shapes, etc.
================
You are bunch of incompetent amateurs.
If I used such lame excuse for missing important functionality at work, I would be very soon replaced by a more competent programmer.
This time I am not a programmer, I am AN USER. And, as an user I do not care if your internal data structure for new objects doesn't let you do something easily. Find a way to implement that feature or change the data structure. Period.

Select object member function problem

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