| /******************************************************************************* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.olingo.odata2.api; |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * This class is a container for the supported ODataServiceVersions. |
| * |
| * |
| */ |
| public class ODataServiceVersion { |
| private static final Pattern DATASERVICEVERSIONPATTERN = Pattern.compile("(\\p{Digit}+\\.\\p{Digit}+)(:?;.*)?"); |
| |
| /** |
| * ODataServiceVersion 1.0 |
| */ |
| public static final String V10 = "1.0"; |
| /** |
| * ODataServiceVersion 2.0 |
| */ |
| public static final String V20 = "2.0"; |
| /** |
| * ODataServiceVersion 3.0 |
| */ |
| public static final String V30 = "3.0"; |
| |
| private ODataServiceVersion() { |
| |
| } |
| |
| /** |
| * Validates format and range of a data service version string. |
| * @param version version string |
| * @return <code>true</code> for a valid version |
| */ |
| public static boolean validateDataServiceVersion(final String version) { |
| final Matcher matcher = DATASERVICEVERSIONPATTERN.matcher(version); |
| if (matcher.matches()) { |
| final String possibleDataServiceVersion = matcher.group(1); |
| return V10.equals(possibleDataServiceVersion) |
| || V20.equals(possibleDataServiceVersion) |
| || V30.equals(possibleDataServiceVersion); |
| } else { |
| throw new IllegalArgumentException(version); |
| } |
| } |
| |
| /** |
| * actual > comparedTo |
| * @param actual |
| * @param comparedTo |
| * @return <code>true</code> if actual is bigger than comparedTo |
| */ |
| public static boolean isBiggerThan(final String actual, final String comparedTo) { |
| if (!validateDataServiceVersion(comparedTo) || !validateDataServiceVersion(actual)) { |
| throw new IllegalArgumentException("Illegal arguments: " + comparedTo + " and " + actual); |
| } |
| |
| final double me = Double.parseDouble(extractDataServiceVersionString(actual)); |
| final double other = Double.parseDouble(extractDataServiceVersionString(comparedTo)); |
| |
| return me > other; |
| } |
| |
| private static String extractDataServiceVersionString(final String rawDataServiceVersion) { |
| if (rawDataServiceVersion != null) { |
| final String[] pattern = rawDataServiceVersion.split(";"); |
| return pattern[0]; |
| } |
| |
| return null; |
| } |
| |
| } |