From e778ea67121f17232a7dced3fb4f0a205ffa64af Mon Sep 17 00:00:00 2001
From: Jason van Zyl <jvanzyl@apache.org>
Date: Wed, 18 Jul 2012 01:16:59 +0000
Subject: [PATCH] MNG-5312: MavenProject.getParent intolerably slow when import
 scope used heavily Submitted by: Jesse Glick

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-3/trunk@1362736 13f79535-47bb-0310-9956-ffa450edef68
---
 .../maven/project/DefaultProjectBuilder.java    | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/maven-core/src/main/java/org/apache/maven/project/DefaultProjectBuilder.java b/maven-core/src/main/java/org/apache/maven/project/DefaultProjectBuilder.java
index 19a3dd51a2..4e4db80d4b 100644
--- a/maven-core/src/main/java/org/apache/maven/project/DefaultProjectBuilder.java
+++ b/maven-core/src/main/java/org/apache/maven/project/DefaultProjectBuilder.java
@@ -99,13 +99,13 @@ public class DefaultProjectBuilder
     public ProjectBuildingResult build( File pomFile, ProjectBuildingRequest request )
         throws ProjectBuildingException
     {
-        return build( pomFile, new FileModelSource( pomFile ), new InternalConfig( request, null, null ) );
+        return build( pomFile, new FileModelSource( pomFile ), new InternalConfig( request, null ) );
     }
 
     public ProjectBuildingResult build( ModelSource modelSource, ProjectBuildingRequest request )
         throws ProjectBuildingException
     {
-        return build( null, modelSource, new InternalConfig( request, null, null ) );
+        return build( null, modelSource, new InternalConfig( request, null ) );
     }
 
     private ProjectBuildingResult build( File pomFile, ModelSource modelSource, InternalConfig config )
@@ -256,7 +256,7 @@ public class DefaultProjectBuilder
         request.setUserProperties( configuration.getUserProperties() );
         request.setBuildStartTime( configuration.getBuildStartTime() );
         request.setModelResolver( resolver );
-        request.setModelCache( config.modelCache );
+        request.setModelCache( new ReactorModelCache() );
 
         return request;
     }
@@ -273,7 +273,7 @@ public class DefaultProjectBuilder
         org.sonatype.aether.artifact.Artifact pomArtifact = RepositoryUtils.toArtifact( artifact );
         pomArtifact = ArtifactDescriptorUtils.toPomArtifact( pomArtifact );
 
-        InternalConfig config = new InternalConfig( request, null, null );
+        InternalConfig config = new InternalConfig( request, null );
 
         boolean localProject;
 
@@ -334,9 +334,7 @@ public class DefaultProjectBuilder
 
         ReactorModelPool modelPool = new ReactorModelPool();
 
-        ReactorModelCache modelCache = new ReactorModelCache();
-
-        InternalConfig config = new InternalConfig( request, modelPool, modelCache );
+        InternalConfig config = new InternalConfig( request, modelPool );
 
         Map<String, MavenProject> projectIndex = new HashMap<String, MavenProject>( 256 );
 
@@ -673,13 +671,10 @@ public class DefaultProjectBuilder
 
         public final ReactorModelPool modelPool;
 
-        public final ReactorModelCache modelCache;
-
-        public InternalConfig( ProjectBuildingRequest request, ReactorModelPool modelPool, ReactorModelCache modelCache )
+        InternalConfig( ProjectBuildingRequest request, ReactorModelPool modelPool )
         {
             this.request = request;
             this.modelPool = modelPool;
-            this.modelCache = modelCache;
             session =
                 LegacyLocalRepositoryManager.overlay( request.getLocalRepository(), request.getRepositorySession(),
                                                       repoSystem );