| ~~ 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. |
| |
| ------ |
| Require Java Version |
| ------ |
| Brian Fox |
| ------ |
| June 2007 |
| ------ |
| |
| Require Java Version |
| |
| This rule enforces certain Java JDK versions. The rule uses the {{{./versionRanges.html}Enforcer version range syntax}} to define allowed versions. |
| |
| The following parameters are supported by this rule: |
| |
| * message - an optional message to the user if the rule fails. |
| |
| * {{{../apidocs/org/apache/maven/plugin/enforcer/AbstractVersionEnforcer.html#version}version}} - {{{./versionRanges.html}range}} of allowed JDKs. |
| |
| [] |
| |
| The JDK version is retrieved and the following processing occurs before being checked: |
| |
| [[1]] Drop all non-numeric characters preceeding the first number. (build 1.5.0_07-b03 becomes 1.5.0_07-b03) |
| |
| [[2]] Replace all '_' and '-' with '.' (1.5.0_07-b03 becomes 1.5.0.07.b03) |
| |
| [[3]] Remove all non digit characters "[^0-9] and convert each section using Integer.parseInt() (1.5.0_07-b03 becomes 1.5.0.7.3) |
| |
| [[3]] Split the string on '.' and take the first 3 sections, separated by '.' and add '-' followed by the forth section (1.5.0.7.3 becomes 1.5.0-7) |
| |
| [] |
| |
| This preprocessing normalizes various JDK version strings into a standard x.y.z-b version number. Your required range should therefore use the x.y.z-b format for comparison. |
| There is an easy way to see how your current JDK string will be normalized: |
| |
| +---+ |
| mvn enforcer:display-info |
| ... |
| [enforcer:display-info] |
| Maven Version: 2.0.8 |
| JDK Version: 1.5.0_11 normalized as: 1.5.0-11 |
| OS Info: Arch: x86 Family: windows Name: windows xp Version: 5.1 |
| +---+ |
| |
| Sample Plugin Configuration: |
| |
| +---+ |
| <project> |
| [...] |
| <build> |
| <plugins> |
| <plugin> |
| <groupId>org.apache.maven.plugins</groupId> |
| <artifactId>maven-enforcer-plugin</artifactId> |
| <version>1.0</version> |
| <executions> |
| <execution> |
| <id>enforce-java</id> |
| <goals> |
| <goal>enforce</goal> |
| </goals> |
| <configuration> |
| <rules> |
| <requireJavaVersion> |
| <version>1.5.0</version> |
| </requireJavaVersion> |
| </rules> |
| </configuration> |
| </execution> |
| </executions> |
| </plugin> |
| </plugins> |
| </build> |
| [...] |
| </project> |
| +---+ |
| |