Object Oriented SQF Scripting and Compiling

[aloe 10]

thank you code34!

[darrenbang 0]

Try this one.....OOP Basics

 

Darren

[aloe 10]

Hello all.
Is it possible to call methods in the context of class?. ie call static methods. For example, for the realization of the "singleton" pattern?
 
Something like:

 

_myObj = ["getInstance", _params] call MySingletonClass;
or
_myObj = _params call MySingletonClass_getInstance;

[aloe 10]

This is a simple class to connect to the database for extDB2, but the implementation via the singleton will look easier and stable for any instance:

 

	
	#include "oop.h"

	CLASS("DatabaseExtDB2Connect")

		PRIVATE STATIC_VARIABLE("string", "connectID");

		PUBLIC FUNCTION("array", "constructor") {
			
			private ["_version", "_database", "_protocol", "_protocolOptions"];
			
			_database =        [_this, 0, "", [""]] call BIS_fnc_param;
			_protocol =        [_this, 1, "", [""]] call BIS_fnc_param;
			_protocolOptions = [_this, 2, "", [""]] call BIS_fnc_param;

			if (isNil {uiNamespace getVariable "extDB_SQL_CUSTOM_ID"}) then {
				
				_version = MEMBER("getVersion", nil);
				if(_version != "") then {
					MEMBER("sendLog", "Version: " + _version);
					
					//Add Database
					if(MEMBER("addDatabase", _database)) then {
						
						//Load protocol
						private ["_protocolParams"];
						_protocolParams = [_database, _protocol, str(round(random(999999))), _protocolOptions];
						
						if(MEMBER("loadDatabaseProtocol", _protocolParams)) then {
						
							MEMBER("connectID", _protocolParams select 2);
							uiNamespace setVariable ["extDB_SQL_CUSTOM_ID", _protocolParams select 2];
							
							MEMBER("lock", nil);							
						};
					};
				}else{
					MEMBER("sendError", "Failed to Load");
				};
			}else{
				MEMBER("connectID", uiNamespace getVariable "extDB_SQL_CUSTOM_ID");
				MEMBER("sendLog", "Already connected");
			};
		};
		
		PUBLIC FUNCTION("string", "deconstructor") {
			DELETE_VARIABLE("connectID");
		};
		
		PUBLIC FUNCTION("", "getConnectID") FUNC_GETVAR("connectID");
				
		PRIVATE FUNCTION("string", "addDatabase") {
			private ["_return", "_result"];
			
			_result = call compile ("extDB2" callExtension format["9:ADD_DATABASE:%1", _this]);
			_return = false;
			
			if ((_result select 0) isEqualTo 1) then {
				MEMBER("sendLog", "Database added: " + _this);
				_return = true;
			}else{
				MEMBER("sendError", _result select 1);
			};
			
		_return
		};
		
		PRIVATE FUNCTION("array", "loadDatabaseProtocol") {
			_this params ["_database", "_protocol", "_id", "_protocolOptions"];
			private ["_return", "_result"];
			
			_return = false;
			_result = call compile ("extDB2" callExtension format["9:ADD_DATABASE_PROTOCOL:%1:%2:%3:%4", 
				_database,
				_protocol,
				_id,
				_protocolOptions
			]);
			
			if ((_result select 0) isEqualTo 1) then {
				MEMBER("sendLog", "Protocol loaded - " + _protocol);
				_return = true;
			}else{
				MEMBER("sendError", _result select 1);
			};
			
		_return
		};
		
		PRIVATE FUNCTION("", "getVersion") {
			"extDB2" callExtension "9:VERSION";
		};
		
		PRIVATE FUNCTION("", "lock") {
			private ["_return", "_result"];
			
			_result = call compile ("extDB2" callExtension "9:LOCK");
			_return = false;
			
			if ((_result select 0) isEqualTo 1) then {
				_return = true;
				MEMBER("sendLog", "Locked");
			};
			
		_return
		};
		
		PRIVATE FUNCTION("string", "sendLog") {
			diag_log (format ["extDB2 log: %1", _this]);
		};
		
		PRIVATE FUNCTION("string", "sendError") {
			private ["_error"];
			_error = format["extDB2 Error: %1", _this];
			_error call BIS_fnc_error;
			diag_log _error;
		};
		
	ENDCLASS;

Code:

 

_databaseConn = ["new", ["MySQL_test_database_1", "SQL_CUSTOM_V2", "/"]] call DatabaseExtDB2Connect;

[code34 248]

 

Hello all.

Is it possible to call methods in the context of class?. ie call static methods. For example, for the realization of the "singleton" pattern?

 

Something like:

 

_myObj = ["getInstance", _params] call MySingletonClass;
or
_myObj = _params call MySingletonClass_getInstance;

 

Hi Aloe :)

 

Happy to see you again ! sadly, currently static method other than new / delete are not supported.

 

i will look to see if we can add the support

 

for extdb2 connector, nice work

 

i also work currently on the same project cause i need a driver to manage extdb2. You seems to want to use several class. is there a reason ?

 

if you are interested by we perhaps could work together on this projet (through gitbhub) to strkie the goal  :)

[aloe 10]

Hi Code34  :).
No, this is not entirely a conscious class name) That should be one class, responsibility is - provide a convenient interface to the database (connection, read, write, etc.).

I am a pioneer in working with git, but I will be glad to cooperation of our efforts towards a common goal and help the community. Give please me your contact-mail or vk.com or skype or jabber :icon_smile:.

[code34 248]

just send you a pm :)

[code34 248]

you can retrieve oop.h (temporary version) on this url :

https://github.com/code34/combat_assault.altis/blob/1.35/warcontext/objects/oop.h

 

i add a _self local variable to retrieve the pointer of the object itself

 

you can use it like this

PUBLIC FUNCTION("", "getThis") { _self; };

MEMBER("getThis", nil);

or directly using the _self variable in the code of object as it a reserved variable :)

[john_doe 12]

On 26-9-2017 at 10:14 PM, code34 said:

you can retrieve oop.h (temporary version) on this url :

https://github.com/code34/combat_assault.altis/blob/1.35/warcontext/objects/oop.h

 

i add a _self local variable to retrieve the pointer of the object itself

 

you can use it like this

PUBLIC FUNCTION("", "getThis") { _self; };

MEMBER("getThis", nil);

or directly using the _self variable in the code of object as it a reserved variable :)

 

How would i go about adding a class object to an array ?

If it can not be done, i can add the item ID's to the list but i'm not sure how i would get the "item details" (ex: name) from the ID...
 

I have this 'Item' class:

#include "..\..\lib\OOP\oop.h"

CLASS("Item")

PRIVATE STATIC_VARIABLE("scalar","lastItemID");
PRIVATE VARIABLE("scalar", "id");
PRIVATE VARIABLE("string", "name");

PUBLIC FUNCTION("string", "constructor") { // String: ItemName
	private ["_id"];
	MEMBER("name", _this);

	_id = MEMBER("lastItemID", nil);
	if (isNil "_id") then {_id = 0};
	MEMBER("id", _id);

	INC_VAR("lastItemID");
};
PUBLIC FUNCTION("nil", "deconstructor"){
	DELETE_VARIABLE("id");
	DELETE_VARIABLE("name");
};
PUBLIC FUNCTION("", "getItemId") FUNC_GETVAR("id");
PUBLIC FUNCTION("", "getItemName") FUNC_GETVAR("name");

ENDCLASS;

 

And this 'ItemList' class:

#include "..\..\lib\OOP\oop.h"

CLASS("ItemList")

PRIVATE VARIABLE("array", "items");

PUBLIC FUNCTION("", "constructor") {
	MEMBER("items", []);
};
PUBLIC FUNCTION("nil", "deconstructor"){
	DELETE_VARIABLE("items");
};
PUBLIC FUNCTION("object", "addItem"){ // Object: Item
	private ["_items", "_index"];
	_items = MEMBER("items", nil);
	_index = count _items;
	_items set [_index, _this];
};
PUBLIC FUNCTION("", "getItems") FUNC_GETVAR("items");

ENDCLASS;

 

[code34 248]

hi

 

Just a simple modification, the type of oop object is code not object :)

 

#include "..\..\lib\OOP\oop.h"

CLASS("ItemList")

PRIVATE VARIABLE("array", "items");

PUBLIC FUNCTION("", "constructor") {
	MEMBER("items", []);
};
PUBLIC FUNCTION("nil", "deconstructor"){
	DELETE_VARIABLE("items");
};
PUBLIC FUNCTION("code", "addItem"){ // Object: Item
MEMBER("items", nil) pushBack _this;
};
PUBLIC FUNCTION("", "getItems") FUNC_GETVAR("items");

ENDCLASS;

 

[code34 248]

 You should now use this forum thread with the new OOP version :) cause this one is no longer maintain since few years

 

 

[john_doe 12]

On 9-1-2018 at 7:05 PM, code34 said:

hi

 

Just a simple modification, the type of oop object is code not object :)

 

#include "..\..\lib\OOP\oop.h"

CLASS("ItemList")

PRIVATE VARIABLE("array", "items");

PUBLIC FUNCTION("", "constructor") {
	MEMBER("items", []);
};
PUBLIC FUNCTION("nil", "deconstructor"){
	DELETE_VARIABLE("items");
};
PUBLIC FUNCTION("code", "addItem"){ // Object: Item
MEMBER("items", nil) pushBack _this;
};
PUBLIC FUNCTION("", "getItems") FUNC_GETVAR("items");

ENDCLASS;

 

On 9-1-2018 at 7:11 PM, code34 said:

 You should now use this forum thread with the new OOP version :) cause this one is no longer maintain since few years

 

 

 

Thanks alot!
I'll try this later..