Java tutorial
/* * Copyright (C) 2012 Square, Inc. * Copyright (C) 2007 The Guava Authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package qm.vp.kiev.qmhttplib.retrofit; import com.squareup.okhttp.MediaType; import com.squareup.okhttp.Response; import com.squareup.okhttp.ResponseBody; import java.io.IOException; import java.util.concurrent.Executor; import okio.Buffer; import okio.BufferedSource; final class Utils { static <T> T checkNotNull(T object, String message, Object... args) { if (object == null) { throw new NullPointerException(String.format(message, args)); } return object; } /** * Replace a {@link com.squareup.okhttp.Response} with an identical copy whose body is backed by a * {@link okio.Buffer} rather than a {@link okio.Source}. */ static Response readBodyToBytesIfNecessary(Response response) throws IOException { final ResponseBody body = response.body(); if (body == null) { return response; } BufferedSource source = body.source(); final Buffer buffer = new Buffer(); buffer.writeAll(source); source.close(); return response.newBuilder().body(new ResponseBody() { @Override public MediaType contentType() { return body.contentType(); } @Override public long contentLength() { return buffer.size(); } @Override public BufferedSource source() { return buffer.clone(); } }).build(); } static <T> void validateServiceClass(Class<T> service) { if (!service.isInterface()) { throw new IllegalArgumentException("Only interface endpoint definitions are supported."); } // Prevent API interfaces from extending other interfaces. This not only avoids a bug in // Android (http://b.android.com/58753) but it forces composition of API declarations which is // the recommended pattern. if (service.getInterfaces().length > 0) { throw new IllegalArgumentException("Interface definitions must not extend other interfaces."); } } static class SynchronousExecutor implements Executor { @Override public void execute(Runnable runnable) { runnable.run(); } } private Utils() { // No instances. } }