Java tutorial
// Copyright 2015 The Vanadium Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package io.v.android.apps.namespace_browser; import com.google.common.base.Function; import com.google.common.reflect.TypeToken; import com.google.common.util.concurrent.AsyncFunction; import com.google.common.util.concurrent.Futures; import com.google.common.util.concurrent.ListenableFuture; import org.joda.time.Duration; import java.lang.reflect.Type; import java.util.ArrayList; import java.util.List; import javax.annotation.Nullable; import io.v.android.v23.V; import io.v.v23.context.VContext; import io.v.v23.rpc.Client; import io.v.v23.rpc.ClientCall; import io.v.v23.vdlroot.signature.Interface; import io.v.v23.vdlroot.signature.Method; import io.v.v23.verror.VException; class Methods { // Returns a new future whose result is the list of method names of the provided object. static ListenableFuture<List<String>> get(VContext ctx, String name) { Client client = V.getClient(ctx); VContext ctxT = ctx.withTimeout(new Duration(20000)); // 20s ListenableFuture<ClientCall> callFuture = client.startCall(ctxT, name, "__Signature", new Object[0], new Type[0]); final Type[] resultTypes = new Type[] { new TypeToken<Interface[]>() { }.getType() }; ListenableFuture<Interface[]> sign = Futures.transform(callFuture, new AsyncFunction<ClientCall, Interface[]>() { @Override public ListenableFuture<Interface[]> apply(ClientCall call) throws Exception { return Futures.transform(call.finish(resultTypes), new Function<Object[], Interface[]>() { @Override public Interface[] apply(Object[] input) { return (Interface[]) (input[0]); } }); } }); return Futures.transform(sign, new Function<Interface[], List<String>>() { @Override public List<String> apply(Interface[] input) { List<String> ret = new ArrayList<String>(); for (Interface iface : input) { if (iface.getMethods() != null) { for (Method method : iface.getMethods()) { ret.add(method.getName()); } } } return ret; } }); } }