com.google.web.bindery.requestfactory.shared.impl.IdUtil Maven / Gradle / Ivy
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/*
* 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() {
}
}