Message5540

A Python function can be passed as a parameter to a Java method, where the corresponding argument is a single method interface. This is accomplished by having PyFunction.__tojava__ perform the conversion/wrapping.
While the resulting wrapped PyFunction works properly when the interface method is invoked, it malfunctions if the Java code attempts to access a method those defined in java.lang.Object, hashCode() or toString() for example.
I believe others have run into this difficulty.

I believe others have discovered that this can block the use of method specifically coded to accept PyFunctions or PyObjects - for example, given the two java methods:

void myMethod(PyFunction x);
void myMethod(SingleMethodInterface x);

The PyFunction.__tojava__() modification would result in the second method being chosen over the first, despite the fact that the first may be desirable.


Many Thanks.

Regards

Geoffrey French