Re: [Swig-user] Using the typemap javapackage

[jiangzhiyang <ja...@gm...>]

Judicaël Bedouet 写道:
> Hello swig users,
>
> I would like to use a class in a class which belongs to another Java
> package. Both are generated by swig.
>
> So, I tried to compile the typemap(javapackage) example in SWIG-1.3
> documentation (paragraph 20.8.10 Director specific typemaps) but it
> doesn't work for me.
>
> With the javapackage typemap, we could specify the name of the package
> for an extern class but the corresponding import is not automatically
> added in the generated Java file. However, with the javaimports
> typemap, we could specify the import in the class.
>
> I wonder why the corresponding import is not automatically added in
> the Java file. All the more so since the import must also be added to
> the file <module>JNI.java and I don't know how to do it.
>
> Below are example files.
>
> After having manually added "import com.wombat.foo.*;" to
> module_exampleJNI.java, I can't compile Example.java because of the
> following error:
>
> com/wombat/example/Example.java:39: getCPtr(com.wombat.foo.Foo) has
> protected access in com.wombat.foo.Foo
>    module_exampleJNI.Example_ping(swigCPtr, this,
> Foo.getCPtr(arg1),arg1, Bar.getCPtr(arg2), arg2);
>
> Here are my compilation commands.
>
> mkdir -p com/wombat/example
> mkdir -p com/wombat/foo
> /opt/swig-1.3.35/bin/swig -c++ -java -package com.wombat.example
> -outdir com/wombat/example Example.i
> /opt/swig-1.3.35/bin/swig -c++ -java -package com.wombat.foo -outdir
> com/wombat/foo Foo.i
> /usr/java/jdk1.5.0_14/bin/javac com/wombat/foo/Foo.java
> /usr/java/jdk1.5.0_14/bin/javac com/wombat/example/Example.java
>
> I would be very grateful if someone knows how to deal with multiple packages.
>
> J. B.
>
>
> // Foo.i
>
> %module module_foo
> %{
> %}
>
> %inline {
>  class Foo {
>  public:
>    Foo ();
>  };
> }
>
> // Example.i
>
> %module module_example
> %{
> %}
>
> %import "Foo.i"
> %typemap("javapackage") Foo, Foo *, Foo & "com.wombat.foo";
> %feature("director") Example;
>
> %typemap(javaimports) Example "
> import com.wombat.foo.*;
> "
>
> %inline {
>  class Bar {};
>
>  class Example {
>  public:
>    virtual ~Example ();
>    void ping (Foo *arg1, Bar *arg2);
>  };
> }
>
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>   
Try this:
// Foo.i

%module module_foo
%{
%}
*%typemap(javabody) SWIGTYPE %{
private long swigCPtr;
protected boolean swigCMemOwn;
public $javaclassname(long cPtr, boolean cMemoryOwn) {
swigCMemOwn = cMemoryOwn;
swigCPtr = cPtr;
}
public static long getCPtr($javaclassname obj) {
return (obj == null) ? 0 : obj.swigCPtr;
}
%}
*
%inline {
class Foo {
public:
Foo ();
};
}

// Example.i

%module module_example
%{
%}

%import "Foo.i"
%typemap("javapackage") Foo, Foo *, Foo & "com.wombat.foo";
%feature("director") Example;

%typemap(javaimports) Example "import com.wombat.foo.*;"
*%pragma(java) jniclassimports=%{
import com.wombat.foo.*;
%}*

%inline {
class Bar {};

class Example {
public:
virtual ~Example ();
void ping (Foo *arg1, Bar *arg2);
};
}