| /* |
| * Copyright 2010 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.web.bindery.requestfactory.shared.impl; |
| |
| /** |
| * Common functions for slicing and dicing EntityProxy ids. |
| */ |
| class IdUtil { |
| private static final String ANY_SEPARATOR_PATTERN = "@[012]@"; |
| private static final String EPHEMERAL_SEPARATOR = "@1@"; |
| private static final String TOKEN_SEPARATOR = "@0@"; |
| private static final String SYNTHETIC_SEPARATOR = "@2@"; |
| |
| private static final int ID_TOKEN_INDEX = 0; |
| private static final int TYPE_TOKEN_INDEX = 1; |
| |
| public static String ephemeralId(int clientId, String typeToken) { |
| return clientId + EPHEMERAL_SEPARATOR + typeToken; |
| } |
| |
| public static int getClientId(String encodedId) { |
| return Integer.valueOf(asEphemeral(encodedId)[ID_TOKEN_INDEX]); |
| } |
| |
| public static String getServerId(String encodedId) { |
| return asPersisted(encodedId)[ID_TOKEN_INDEX]; |
| } |
| |
| public static int getSyntheticId(String encodedId) { |
| return Integer.valueOf(asSynthetic(encodedId)[ID_TOKEN_INDEX]); |
| } |
| |
| public static String getTypeToken(String encodedId) { |
| String[] split = asAny(encodedId); |
| if (split.length == 2) { |
| return split[TYPE_TOKEN_INDEX]; |
| } |
| return null; |
| } |
| |
| public static boolean isEphemeral(String encodedId) { |
| return encodedId.contains(EPHEMERAL_SEPARATOR); |
| } |
| |
| public static boolean isPersisted(String encodedId) { |
| return encodedId.contains(TOKEN_SEPARATOR); |
| } |
| |
| public static boolean isSynthetic(String encodedId) { |
| return encodedId.contains(SYNTHETIC_SEPARATOR); |
| } |
| |
| public static String persistedId(String serverId, String typeToken) { |
| return serverId + TOKEN_SEPARATOR + typeToken; |
| } |
| |
| public static String syntheticId(int syntheticId, String historyToken) { |
| return syntheticId + SYNTHETIC_SEPARATOR + historyToken; |
| } |
| |
| private static String[] asAny(String encodedId) { |
| return encodedId.split(ANY_SEPARATOR_PATTERN); |
| } |
| |
| private static String[] asEphemeral(String encodedId) { |
| return encodedId.split(EPHEMERAL_SEPARATOR); |
| } |
| |
| private static String[] asPersisted(String encodedId) { |
| return encodedId.split(TOKEN_SEPARATOR); |
| } |
| |
| private static String[] asSynthetic(String encodedId) { |
| return encodedId.split(SYNTHETIC_SEPARATOR); |
| } |
| |
| /** |
| * Utility class. |
| */ |
| private IdUtil() { |
| } |
| } |