free up maps during cleanup() processing

diff --git a/org.aspectj.ajdt.core/src/org/aspectj/ajdt/internal/core/builder/StatefulNameEnvironment.java b/org.aspectj.ajdt.core/src/org/aspectj/ajdt/internal/core/builder/StatefulNameEnvironment.java
index 713f6e7283f070876b2dd9d73acf8b0d1728d4aa..8d00916d87aada89a21b2e9e11880aa0c138462b 100644 (file)
--- a/org.aspectj.ajdt.core/src/org/aspectj/ajdt/internal/core/builder/StatefulNameEnvironment.java
+++ b/org.aspectj.ajdt.core/src/org/aspectj/ajdt/internal/core/builder/StatefulNameEnvironment.java
@@ -14,6 +14,7 @@
 package org.aspectj.ajdt.internal.core.builder;
 
 //import java.util.HashMap;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Map;
@@ -28,9 +29,9 @@ import org.aspectj.org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer;
 
 
 public class StatefulNameEnvironment implements INameEnvironment {
-       Map classesFromName;
-       Set packageNames;
-       INameEnvironment baseEnvironment;
+       private Map classesFromName;
+       private Set packageNames;
+       private INameEnvironment baseEnvironment;
        
        public StatefulNameEnvironment(INameEnvironment baseEnvironment, Map classesFromName) {
                this.classesFromName = classesFromName;
@@ -54,6 +55,8 @@ public class StatefulNameEnvironment implements INameEnvironment {
 
        public void cleanup() {
                baseEnvironment.cleanup();
+               this.classesFromName = Collections.EMPTY_MAP;
+               this.packageNames = Collections.EMPTY_SET;
        }
 
        private NameEnvironmentAnswer findType(String name) {