how to use an array of struct in java using SWIG

[Jazi]

Hello All,

I have a function in C++ that takes an array of struct. I want to convert this function to java using SWIG.

Here what I have

structs.h

typedef struct myStruct{
   char name;
   int type;
} 
 
void Foo( myStruct * mystr){
  //do something
}

In C++ driver (and this works fine)

#include "structs.h"
myStruct structTest[5];  //an array
structTest[0].name="me";
structTest[0].type='1';

...
SWIG ...
I included this header in my interface file and it generates all the classes.

.... Here is what I did in my Java driver

myStruct jtest=new myStruct();
jtest.setName("me");
jtest.setType("1");
Foo(jtest);

This worked fine however, I can only do one item at a time. Is there away I create an array of myStruct like I did in C++? I tried but got some errors. Here is one thing I tried:

myStruct jtest[] = new myStruct();

Can any one help? I will appreciate it.

Regards,
Jazi

[Laharl]

I'm not familiar with SWIG, but Java array syntax is

MyStruct[] array = new MyStruct[5];
 

[Jazi]

I'm not familiar with SWIG, but Java array syntax is

MyStruct[] array = new MyStruct[5];
 

Thanks Kaharl,
Here is what I did

myStruct[] jtest=new myStruct[5];
Foo(jtest);

The syntax seems to be correct but it does not seem to like it

mydriver.java:3 0: Foo(jtest) in structs cannot be applied to (jtest[])
Foo(jtest);
^
1 error

The argument of this function should be a pointer and now it does not like it because it is an array. Any other explanations?

Thanks

[Ganon11]

The way SWIG translated your Foo function, it expects a single myStruct variable. Maybe you can, in your C++ code, change the function header to expect a myStruct mystr[] instead of a myStruct * mystr.

[Jazi]

The way SWIG translated your Foo function, it expects a single myStruct variable. Maybe you can, in your C++ code, change the function header to expect a myStruct mystr[] instead of a myStruct * mystr.

I did that but it does not seem to make any difference. I keep getting the same results and therefore the same error. Somehow I need to tell it this is a java array and it has to be done at the interface file level but I am not familiar with it.

Thanks for your tip.