2 files changed, 37 insertions, 1 deletions
diff --git a/sched/src/com/android/sched/util/config/ConfigChecker.java b/sched/src/com/android/sched/util/config/ConfigChecker.java
index 63a21e5a..dc94c3b9 100644
--- a/sched/src/com/android/sched/util/config/ConfigChecker.java
+++ b/sched/src/com/android/sched/util/config/ConfigChecker.java
@@ -26,6 +26,7 @@ import com.android.sched.util.location.Location;
 
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Map.Entry;
 
 import javax.annotation.Nonnull;
 
@@ -56,7 +57,11 @@ public class ConfigChecker {
       @Nonnull Map<ObjectId<?>, Object> instanceValues,
       @Nonnull Map<KeyId<?, ?>, Location> locationsById) {
     this.context = context;
-    this.values.putAll(stringValues);
+    for (Entry<PropertyId<?>, PropertyId<?>.Value> entry : stringValues.entrySet()) {
+      this.values.put(entry.getKey(), (entry.getValue() != null) ? entry.getValue().duplicate()
+          : null);
+    }
+
     this.instances.putAll(instanceValues);
     this.locations.putAll(locationsById);
   }
diff --git a/sched/src/com/android/sched/util/config/id/PropertyId.java b/sched/src/com/android/sched/util/config/id/PropertyId.java
index 7086a43b..1d73382f 100644
--- a/sched/src/com/android/sched/util/config/id/PropertyId.java
+++ b/sched/src/com/android/sched/util/config/id/PropertyId.java
@@ -173,6 +173,15 @@ public class PropertyId<T> extends KeyId<T, String> implements HasDescription {
       this.value = new IValueObject<T>(value);
     }
 
+    private Value (@Nonnull IValue<T> value) {
+      this.value = value.duplicate();
+    }
+
+    @Nonnull
+    public synchronized Value duplicate() {
+      return new Value(value);
+    }
+
     public Value (@Nonnull CodecContext context, @Nonnull T value) {
       this.value = new IValueObject<T>(context, value);
     }
@@ -221,6 +230,9 @@ public class PropertyId<T> extends KeyId<T, String> implements HasDescription {
 
     @Nonnull
     public String getString();
+
+    @Nonnull
+    public IValue<T> duplicate();
   }
 
   private class IValueString implements IValue<T> {
@@ -253,6 +265,12 @@ public class PropertyId<T> extends KeyId<T, String> implements HasDescription {
     public PropertyId<T>.IValueObject<T> getValueObject(@Nonnull CodecContext context) {
       throw new AssertionError();
     }
+
+    @Override
+    @Nonnull
+    public IValue<T> duplicate() {
+      return this;
+    }
   }
 
   private class IValueCheckedString implements IValue<T> {
@@ -279,6 +297,12 @@ public class PropertyId<T> extends KeyId<T, String> implements HasDescription {
     public PropertyId<?>.IValueObject<T> getValueObject(@Nonnull CodecContext context) {
       return new IValueObject<T>(context, PropertyId.this.codec.parseString(context, value));
     }
+
+    @Override
+    @Nonnull
+    public IValue<T> duplicate() {
+      return this;
+    }
   }
 
   private class IValueObject<T> implements IValue<T> {
@@ -331,5 +355,12 @@ public class PropertyId<T> extends KeyId<T, String> implements HasDescription {
     public T getObject() {
       return value;
     }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    @Nonnull
+    public IValue<T> duplicate() {
+      return ((PropertyId<T>) (PropertyId.this)).new IValueCheckedString(getString());
+    }
   }
 }