[Octave-bug-tracker] [bug #44882] java arrays are not automatically converted to octave types

[Philip Nienhuis]

Follow-up Comment #16, bug #44882 (project octave):

With a fresh clone incl. the new Java patches I see 8 FAILS with "make
check":

>>>>> processing
/home/philip/devel/octdev/oct40/libinterp/octave-value/ov-java.cc-tst
***** assert (javaMethod ("binarySearch", "java.util.Arrays", uint8  ([90 100
255]), uint8  (255)) < 0)
!!!!! test failed
[java] java.lang.ClassCastException: org.octave.OctaveReference cannot be cast
to java.lang.Byte
***** assert (javaMethod ("binarySearch", "java.util.Arrays", uint8  ([90 100
128]), uint8  (128)) < 0)
!!!!! test failed
[java] java.lang.ClassCastException: org.octave.OctaveReference cannot be cast
to java.lang.Byte
***** assert (javaMethod ("binarySearch", "java.util.Arrays", uint8  ([90 100
127]), uint8  (127)), 2)
!!!!! test failed
[java] java.lang.ClassCastException: org.octave.OctaveReference cannot be cast
to java.lang.Byte
***** assert (javaMethod ("binarySearch", "java.util.Arrays", uint16 ([90 100
128]), uint16 (128)), 2)
!!!!! test failed
[java] java.lang.ClassCastException: org.octave.OctaveReference cannot be cast
to java.lang.Short
***** assert (class (javaObject ("java.lang.Byte", uint8 (1))),
"java.lang.Byte");
!!!!! test failed
[java] java.lang.NoSuchMethodException: java.lang.Byte
***** assert (class (javaObject ("java.lang.Byte", int8 (1))),
"java.lang.Byte");
!!!!! test failed
[java] java.lang.NoSuchMethodException: java.lang.Byte
***** assert (class (javaObject ("java.lang.Short", uint16 (1))),
"java.lang.Short");
!!!!! test failed
[java] java.lang.NoSuchMethodException: java.lang.Short
***** assert (class (javaObject ("java.lang.Short", int16 (1))),
"java.lang.Short");
!!!!! test failed
[java] java.lang.NoSuchMethodException: java.lang.Short


All the Java-based io package spreadsheet I/O code works, however.

As to the last FAIL:

[java] java.lang.NoSuchMethodException: java.lang.Short


it looks like the constructor, doesn't accept any other input than doubles:

>> t = javaObject ("java.lang.Short", int16 (1))
error: [java] java.lang.NoSuchMethodException: java.lang.Short
>> t = javaObject ("java.lang.Short", 1)
t =

<Java object: java.lang.Short>

>> class (t)
ans = java.lang.Short
>> t = javaObject ("java.lang.Short", int8 (1))
error: [java] java.lang.NoSuchMethodException: java.lang.Short
>> t = javaObject ("java.lang.Short", int32 (1))
error: [java] java.lang.NoSuchMethodException: java.lang.Short
>> t = javaObject ("java.lang.Short", double (1))
t =

<Java object: java.lang.Short>


Is there something in the Javadocs outlining what argument types the
constructor of java.lang.Short is supposed to accept? Or is this all related
to conversion code in ov-java.cc / ov-java.h ?
(as you see, while I have written some Java-based code, I'm still a Java n00b
when it comes to the nitty-gritty :-) )


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