added javadoc

git-svn-id: 
https://svn.apache.org/repos/asf/maven/maven-2/branches/maven-2.2.x@1340265 
13f79535-47bb-0310-9956-ffa450edef68


Project: http://git-wip-us.apache.org/repos/asf/maven/repo
Commit: http://git-wip-us.apache.org/repos/asf/maven/commit/51585dcc
Tree: http://git-wip-us.apache.org/repos/asf/maven/tree/51585dcc
Diff: http://git-wip-us.apache.org/repos/asf/maven/diff/51585dcc

Branch: refs/heads/maven-2.2.x
Commit: 51585dcce06fe6c711e06519a5b1b6b8a531fef2
Parents: 547a1e4
Author: Herve Boutemy <hbout...@apache.org>
Authored: Fri May 18 21:34:01 2012 +0000
Committer: Herve Boutemy <hbout...@apache.org>
Committed: Fri May 18 21:34:01 2012 +0000

----------------------------------------------------------------------
 .../plugin/PluginParameterExpressionEvaluator.java |   18 +++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
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http://git-wip-us.apache.org/repos/asf/maven/blob/51585dcc/maven-core/src/main/java/org/apache/maven/plugin/PluginParameterExpressionEvaluator.java
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diff --git 
a/maven-core/src/main/java/org/apache/maven/plugin/PluginParameterExpressionEvaluator.java
 
b/maven-core/src/main/java/org/apache/maven/plugin/PluginParameterExpressionEvaluator.java
index 17b9edd..faf5f99 100644
--- 
a/maven-core/src/main/java/org/apache/maven/plugin/PluginParameterExpressionEvaluator.java
+++ 
b/maven-core/src/main/java/org/apache/maven/plugin/PluginParameterExpressionEvaluator.java
@@ -35,6 +35,24 @@ import java.util.Map;
 import java.util.Properties;
 
 /**
+ * Evaluator for plugin parameters expressions. Content surrounded by 
<code>${</code> and <code>}</code> is evaluated.
+ * Recognized values are:<ul>
+ * <li><code>localRepository</code></li>
+ * <li><code>session</code></li>
+ * <li><code>reactorProjects</code></li>
+ * <li><code>reports</code></li>
+ * <li><code>mojoExecution</code></li>
+ * <li><code>project</code></li>
+ * <li><code>executedProject</code></li>
+ * <li><code>project.*</code></li>
+ * <li><code>plugin.*</code></li>
+ * <li><code>settings</code></li>
+ * <li><code>settings.*</code></li>
+ * <li><code>basedir</code></li>
+ * <li>system properties</li>
+ * <li>project properties</li>
+ * </ul>
+ * 
  * @author <a href="mailto:ja...@maven.org";>Jason van Zyl</a>
  * @version $Id$
  * @todo belong in MavenSession, so it only gets created once?

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