~~ Licensed to the Apache Software Foundation (ASF) under one
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~~ 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
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~~
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~~
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~~ under the License.    
 
  ------
  Require Maven Version
  ------
  Brian Fox
  ------
  June 2007
  ------

Require Maven Version

   This rule enforces certain Maven 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 Maven versions.
   
   []

   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-maven</id>
            <goals>
              <goal>enforce</goal>
            </goals>
            <configuration>
              <rules>
                <requireMavenVersion>
                  <version>2.0.6</version>
                </requireMavenVersion>
              </rules>    
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
  [...]
</project>
+---+