com.google.firebase.database.connection.ConnectionUtils Maven / Gradle / Ivy
/*
* Copyright 2017 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.firebase.database.connection;
import java.util.ArrayList;
import java.util.List;
public class ConnectionUtils {
public static List stringToPath(String string) {
List path = new ArrayList<>();
// OMG, why does Java not have filter ?!? !121111!~
String[] segments = string.split("/");
for (int i = 0; i < segments.length; i++) {
if (!segments[i].isEmpty()) {
path.add(segments[i]);
}
}
return path;
}
public static String pathToString(List segments) {
if (segments.isEmpty()) {
return "/";
} else {
StringBuilder path = new StringBuilder();
boolean first = true;
for (String segment : segments) {
if (!first) {
path.append("/");
}
first = false;
path.append(segment);
}
return path.toString();
}
}
public static Long longFromObject(Object o) {
if (o instanceof Integer) {
return Long.valueOf((Integer) o);
} else if (o instanceof Long) {
return (Long) o;
} else {
return null;
}
}
// TODO: Merge these with Utils from firebase-database
public static void hardAssert(boolean condition) {
hardAssert(condition, "");
}
public static void hardAssert(boolean condition, String message, Object... args) {
if (!condition) {
throw new AssertionError("hardAssert failed: " + String.format(message, args));
}
}
}