Java tutorial
/* * Copyright 2012 Google Inc. * * 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 com.google.api.client.googleapis.services.json; import com.google.api.client.googleapis.services.AbstractGoogleClientRequest; import com.google.api.client.googleapis.services.CommonGoogleClientRequestInitializer; import java.io.IOException; /** * Google JSON client request initializer implementation for setting properties like key and userIp. * * <p> * The simplest usage is to use it to set the key parameter: * </p> * * <pre> public static final GoogleClientRequestInitializer KEY_INITIALIZER = CommonGoogleJsonClientRequestInitializer.newBuilder() .setKey(KEY) .build(); * </pre> * * <p> * There is also a constructor to set both the key and userIp parameters: * </p> * * <pre> public static final GoogleClientRequestInitializer INITIALIZER = CommonGoogleJsonClientRequestInitializer.newBuilder() .setKey(KEY) .setUserIp(USER_IP) .build(); * </pre> * * <p> * If you want to implement custom logic, extend it like this: * </p> * * <pre> public static class MyRequestInitializer extends CommonGoogleJsonClientRequestInitializer { {@literal @}Override public void initialize(AbstractGoogleJsonClientRequest{@literal <}?{@literal >} request) throws IOException { // custom logic } } * </pre> * * <p> * Finally, to set the key and userIp parameters and insert custom logic, extend it like this: * </p> * * <pre> public static class MyKeyRequestInitializer extends CommonGoogleJsonClientRequestInitializer { public MyKeyRequestInitializer() { super(KEY, USER_IP); } {@literal @}Override public void initializeJsonRequest( AbstractGoogleJsonClientRequest{@literal <}?{@literal >} request) throws IOException { // custom logic } } * </pre> * * <p> * Subclasses should be thread-safe. * </p> * * @since 1.12 * @author Yaniv Inbar */ public class CommonGoogleJsonClientRequestInitializer extends CommonGoogleClientRequestInitializer { /** * @deprecated Please use the builder interface */ @Deprecated public CommonGoogleJsonClientRequestInitializer() { super(); } /** * @param key API key or {@code null} to leave it unchanged * @deprecated Please use the builder interface */ @Deprecated public CommonGoogleJsonClientRequestInitializer(String key) { super(key); } /** * @param key API key or {@code null} to leave it unchanged * @param userIp user IP or {@code null} to leave it unchanged * @deprecated Please use the builder interface */ @Deprecated public CommonGoogleJsonClientRequestInitializer(String key, String userIp) { super(key, userIp); } @Override public final void initialize(AbstractGoogleClientRequest<?> request) throws IOException { super.initialize(request); initializeJsonRequest((AbstractGoogleJsonClientRequest<?>) request); } /** * Initializes a Google JSON client request. * * <p> * Default implementation does nothing. Called from * {@link #initialize(AbstractGoogleClientRequest)}. * </p> * * @throws IOException I/O exception */ protected void initializeJsonRequest(AbstractGoogleJsonClientRequest<?> request) throws IOException { } /** * Builder for {@code CommonGoogleJsonClientRequestInitializer}. * * @since 1.30 */ public static class Builder extends CommonGoogleClientRequestInitializer.Builder { @Override protected Builder self() { return this; } } }