Re: [Swig-user] typemaps for java.util.Date

[Shields, D. P.(Technology) <Dan...@gs...>]

I've made some progress and now have an "in" typemap (thanks Michael):

%typemap(in) const boost::posix_time::ptime& {
    if(!$input) {
        SWIG_JavaThrowException(jenv, SWIG_JavaNullPointerException,
"null");
        return $null;
    }
    jclass cls =3D jenv->FindClass("java/util/Date");
    jmethodID mid =3D jenv->GetMethodID(cls, "getTime", "(V)J");
    long t =3D jenv->CallLongMethod($input, mid);
    *($1) =3D from_time_t(t / 1000);
}

%typemap(jni) const boost::posix_time::ptime& "jobject"
%typemap(jtype) const boost::posix_time::ptime& "java.util.Date"
%typemap(jstype) const boost::posix_time::ptime& "java.util.Date"
%typemap(javain) const boost::posix_time::ptime&  "$javainput"

The corresponding "out" typemap compiles in C++ but fails in java:

%typemap(out) Viking::field<boost::posix_time::ptime> {
    $result =3D 0;
    bool valid =3D $1.valid;

    if (valid)
    {
        long t =3D to_time_t($1);
        jclass cls =3D jenv->FindClass("java/util/Date");
        jmethodID mid =3D jenv->GetMethodID(cls, "<init>", "(J)V");
        jobject jdate =3D jenv->AllocObject(cls);
        jenv->CallVoidMethod(jdate, mid, t * 1000);
        $result =3D jdate;
    }
}

%typemap(jni) Viking::field<boost::posix_time::ptime>  "jobject"
%typemap(jtype) const boost::posix_time::ptime& "java.util.Date"
%typemap(jstype) const boost::posix_time::ptime& "java.util.Date"
%typemap(javaout) Viking::field<boost::posix_time::ptime>  { return
$jnicall; }

I'm guessing that the jni/jtype/jstype typemaps are incorrect. A search
of the examples and google have turned up nothing similar. Could someone
kindly point me at an example.

For completeness, the error from javac is:

com/gs/viking/ReportAcknowledgement.java:114: incompatible types
found   : long
required: com.gs.viking.PtimeField
  public PtimeField reportTime() { return
vikingJNI.ReportAcknowledgement_reportTime__SWIG_0(swigCPtr, this); }
=20
^

Thanks,

Daniel.