cache invalidation

org.springframework.core/src/main/java/org/springframework/core/convert/support/GenericConversionService.java

@@ -74,7 +74,7 @@ public class GenericConversionService implements ConversionService, ConverterReg
 			throw new UnsupportedOperationException();
 		}
 		public String toString() {
-			return "null";
+			return "NO_MATCH";
 		}
 	};
 
@@ -85,13 +85,6 @@ public class GenericConversionService implements ConversionService, ConverterReg
 	
 	// implementing ConverterRegistry
 
-	public void addConverter(GenericConverter converter) {
-		Set<GenericConverter.ConvertiblePair> convertibleTypes = converter.getConvertibleTypes();
-		for (GenericConverter.ConvertiblePair convertibleType : convertibleTypes) {
-			getMatchableConvertersList(convertibleType.getSourceType(), convertibleType.getTargetType()).add(converter);
-		}
-	}
-
 	public void addConverter(Converter<?, ?> converter) {
 		GenericConverter.ConvertiblePair typeInfo = getRequiredTypeInfo(converter, Converter.class);
 		if (typeInfo == null) {
@@ -109,12 +102,20 @@ public class GenericConversionService implements ConversionService, ConverterReg
 		}
 		addConverter(new ConverterFactoryAdapter(typeInfo, converterFactory));
 	}
+	
+	public void addConverter(GenericConverter converter) {
+		Set<GenericConverter.ConvertiblePair> convertibleTypes = converter.getConvertibleTypes();
+		for (GenericConverter.ConvertiblePair convertibleType : convertibleTypes) {
+			getMatchableConverters(convertibleType.getSourceType(), convertibleType.getTargetType()).add(converter);
+		}
+		invalidateCache();
+	}
 
 	public void removeConvertible(Class<?> sourceType, Class<?> targetType) {
 		getSourceConverterMap(sourceType).remove(targetType);
+		invalidateCache();
 	}
 
-
 	// implementing ConversionService
 
 	public boolean canConvert(Class<?> sourceType, Class<?> targetType) {
@@ -210,7 +211,6 @@ public class GenericConversionService implements ConversionService, ConverterReg
 		return builder.toString();
 	}
 
-
 	// subclassing hooks
 
 	/**
@@ -295,7 +295,6 @@ public class GenericConversionService implements ConversionService, ConverterReg
 		}
 	}
 
-
 	// internal helpers
 
 	private GenericConverter.ConvertiblePair getRequiredTypeInfo(Object converter, Class<?> genericIfc) {
@@ -303,7 +302,7 @@ public class GenericConversionService implements ConversionService, ConverterReg
 		return (args != null ? new GenericConverter.ConvertiblePair(args[0], args[1]) : null);
 	}
 
-	private MatchableConverters getMatchableConvertersList(Class<?> sourceType, Class<?> targetType) {
+	private MatchableConverters getMatchableConverters(Class<?> sourceType, Class<?> targetType) {
 		Map<Class<?>, MatchableConverters> sourceMap = getSourceConverterMap(sourceType);
 		MatchableConverters matchable = sourceMap.get(targetType);
 		if (matchable == null) {
@@ -312,6 +311,10 @@ public class GenericConversionService implements ConversionService, ConverterReg
 		}
 		return matchable;
 	}
+	
+	private void invalidateCache() {
+		this.converterCache.clear();
+	}
 
 	private Map<Class<?>, MatchableConverters> getSourceConverterMap(Class<?> sourceType) {
 		Map<Class<?>, MatchableConverters> sourceMap = converters.get(sourceType);