o Optimized performance

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-3/trunk@895249 13f79535-47bb-0310-9956-ffa450edef68
mkristian · Jan 2, 2010 · 1957ff0 · 1957ff0
1 parent afb40dc
commit 1957ff0
Showing 1 changed file with 17 additions and 8 deletions.
diff --git a/maven-core/src/main/java/org/apache/maven/project/artifact/MavenMetadataSource.java b/maven-core/src/main/java/org/apache/maven/project/artifact/MavenMetadataSource.java
@@ -101,6 +101,8 @@ public class MavenMetadataSource
     @Requirement
     private LegacySupport legacySupport;
 
+    private static Properties envVars;
+
     private void injectSession( MetadataResolutionRequest request )
     {
         MavenSession session = legacySupport.getSession();
@@ -699,18 +701,25 @@ private Properties getSystemProperties()
     {
         Properties props = new Properties();
 
-        try
+        if ( envVars == null )
         {
-            Properties envVars = CommandLineUtils.getSystemEnvVars();
-            for ( Entry<Object, Object> e : envVars.entrySet() )
+            Properties tmp = new Properties();
+            try
+            {
+                Properties env = CommandLineUtils.getSystemEnvVars();
+                for ( Entry<Object, Object> e : env.entrySet() )
+                {
+                    tmp.setProperty( "env." + e.getKey().toString(), e.getValue().toString() );
+                }
+            }
+            catch ( IOException e )
             {
-                props.setProperty( "env." + e.getKey().toString(), e.getValue().toString() );
+                logger.debug( "Error getting environment variables: " + e );
             }
+            envVars = tmp;
         }
-        catch ( IOException e )
-        {
-            logger.debug( "Error getting environment variables: " + e );
-        }
+
+        props.putAll( envVars );
 
         props.putAll( System.getProperties() );