How to get Key and Value in Java from C# method which returns Object (which originally is Dictionary)?

[Yermek Kadyrbayev]

I managed to get List from system.Object using Java with following code:

List<UserInfo> userInfoList = castToList(api.UserGroupMemberList(newGroup));

public static <T extends List<?>> T castToList(Object obj) {
    IEnumerator enumerator = ((IEnumerable) obj).GetEnumerator();
    List<Object> list = new ArrayList<>();
    while (enumerator.MoveNext()) {
        list.add(enumerator.getCurrent());
    }
    return (T) list;

But I can't get it working with Dictionary, I guess it should be something like following:

    IDictionaryEnumerator enumerator = ((IDictionary) readMsg.getAttachments()).GetEnumerator();

    enumerator.MoveNext();

    enumerator.getCurrent();
    enumerator.getKey();
    enumerator.getValue();


Looks like returned Object is instance of __Enumerable class, and I can't cast it to something related to IDictionary/IDictionaryEnumerator((

[Yermek Kadyrbayev]

I've tried Mihai Cadariu's branch (http://jni4net.googlecode.com/svn/branches/0-8-generics/distributable/), but it failed to generate proxies in my case.

вторник, 19 апреля 2016 г., 17:14:02 UTC+3 пользователь Yermek Kadyrbayev написал:

[Yermek Kadyrbayev]

Here are respective proxies generated by jni4net 0.8.8.0:

    

@ClrMethod("()[[[LSystem/Collections/Generic/Dictionary`2;")
public native Object getAttachments();

and

methods.Add(global::net.sf.jni4net.jni.JNINativeMethod.Create(@__type, "getAttachments", "Attachments6", "()Lsystem/Object;"));

...

private static global::net.sf.jni4net.utils.JniHandle Attachments6(global::System.IntPtr @__envp, global::net.sf.jni4net.utils.JniLocalHandle @__obj) {
    // ()Lsystem/Object;
    // ()[[[LSystem/Collections/Generic/Dictionary`2;
    global::net.sf.jni4net.jni.JNIEnv @__env = global::net.sf.jni4net.jni.JNIEnv.Wrap(@__envp);
    global::net.sf.jni4net.utils.JniHandle @__return = default(global::net.sf.jni4net.utils.JniHandle);
    try {
    global::SomeLibrary.SomeClass @__real = global::net.sf.jni4net.utils.Convertor.StrongJp2C<global::SomeLibrary.SomeClass>(@__env, @__obj);
    @__return = global::net.sf.jni4net.utils.Convertor.StrongC2Jp<global::System.Collections.Generic.Dictionary<string, object>>(@__env, @__real.Attachments);
    }catch (global::System.Exception __ex){@__env.ThrowExisting(__ex);}
    return @__return;
}

[Yermek Kadyrbayev]

Solved by using Bridge.cast() method:

IDictionaryEnumerator enumerator = Bridge.cast(obj, IDictionary.class).GetEnumerator();

среда, 20 апреля 2016 г., 16:08:47 UTC+3 пользователь Yermek Kadyrbayev написал:

[Pavel Šavara]

Nice, thanks for reporting back.

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