Difference between revisions of "Methods handling"
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*argv[0] - number of parameters | *argv[0] - number of parameters | ||
*argv[1] - name of the first parameter | *argv[1] - name of the first parameter | ||
| − | *argv[2] - | + | *argv[2] - previous value of the first parameter |
| − | *argv[3] - value of the first parameter | + | *argv[3] - actual value of the first parameter |
*argv[4] - name of the second parameter | *argv[4] - name of the second parameter | ||
| − | *argv[5] - | + | *argv[5] - previous value of the second parameter |
| − | *argv[6] - value of the second parameter | + | *argv[6] - actual value of the second parameter |
and so on | and so on | ||
== Overriding methods == | == Overriding methods == | ||
If you want to override some built-in method, simply define method with the same name (object::methodName) and write your new body. | If you want to override some built-in method, simply define method with the same name (object::methodName) and write your new body. | ||
Latest revision as of 05:25, 30 November 2010
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Method calling
Methods can be called from triggers or using Send_wait function.
Here is an example of trigger (call method convert_request with one parameter): <source lang="text"> POST_VALIDATE convert_request( persistent_id ) 96 FILTER(EVENT("INSERT")); </source>
Method definition
You can define new methods on every object. This definition must be in file with SPL extension in $NX_ROOT/site/mods/majic folder. In one file you can define more than one method and even for more than one class.
Here is the base structure of new method called newMethod on object cr with variable number of parameters: <source lang="javascript"> void cr::newMethod (...) {
} </source> Use method definition with (...) even if no parameters are expected.
Parameters handling
Parameters are passed into the method in argv array. Each parameters are in triplets. Here is the explanation of argv values:
- argv[0] - number of parameters
- argv[1] - name of the first parameter
- argv[2] - previous value of the first parameter
- argv[3] - actual value of the first parameter
- argv[4] - name of the second parameter
- argv[5] - previous value of the second parameter
- argv[6] - actual value of the second parameter
and so on
Overriding methods
If you want to override some built-in method, simply define method with the same name (object::methodName) and write your new body.
