Re: std::map problem

Looking at java/std_map.i, I see that get() returns a non-const reference
to the object, so the std_string.i conversion to a native java string
won't apply (it would to a const ref).  Furthermore, since std_string.i
doesn't actually declare a string class, you get something you can't do
much with.  A number of options come to mind:  1. Declare a string class
that does useful things, including a method to give you a java string.
2. Give map<> (from swig's point of view) a method that returns a const
reference.  You could just change the return type of get(), but you would
lose the ability to alter elements of your maps.  Perhaps const T& get()
and T& set() would be appropriate; I've only glanced at the file. 3. Use
the specialize_std_map* macros in std_map.i, with an appropriate value of
CONVERT_FROM.

Josh

--
Joshua L. Cherry, Ph.D.
NCBI/NLM/NIH (Contractor)
jcherry@xxxxxxxxxxxxxxxx


On Fri, 28 May 2004, Rob Roy wrote:

> I am using a std::map in C++ of the following form
>
>             std::map<std::string, std::string>
>
> which I am trying to translated to Java using SWIG.
>
>
>
> SWIG does not translate the return value of the get() method of the map
> class found in std_map.i to a java.lang.String. Instead it is creating a
> class called SWIGTYPE_p_std__string.java. I have included both
> std_string.i
> and std_map.i in my .i file. What can I do to fix this?
>
>
>
> Thanks,
>
> Rob
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