found hotspot; added ConverisonServiceFactoryBean

git-svn-id: https://src.springframework.org/svn/spring-framework/trunk@2473 50f2f4bb-b051-0410-bef5-90022cba6387

org.springframework.expression/src/main/java/org/springframework/expression/spel/support/StandardTypeConverter.java

@@ -37,10 +37,12 @@ import org.springframework.util.Assert;
  */
 public class StandardTypeConverter implements TypeConverter {
 
+	private static ConversionService DEFAULT_INSTANCE;
+	
 	private final ConversionService conversionService;
 
 	public StandardTypeConverter() {
-		this.conversionService = ConversionServiceFactory.getDefault();
+		this.conversionService = getDefaultConversionService();		
 	}
 
 	public StandardTypeConverter(ConversionService conversionService) {
@@ -64,4 +66,12 @@ public class StandardTypeConverter implements TypeConverter {
 		}
 	}
 
+	private ConversionService getDefaultConversionService() {
+		synchronized(this) {
+			if (DEFAULT_INSTANCE == null) {
+				DEFAULT_INSTANCE = ConversionServiceFactory.createDefaultConversionService();
+			}
+		}
+		return DEFAULT_INSTANCE;
+	}
 }

org.springframework.expression/src/test/java/org/springframework/expression/spel/ExpressionTestsUsingCoreConversionService.java

@@ -99,7 +99,7 @@ public class ExpressionTestsUsingCoreConversionService extends ExpressionTestCas
 	 */
 	private static class TypeConvertorUsingConversionService implements TypeConverter {
 
-		private final ConversionService service = ConversionServiceFactory.createDefault();
+		private final ConversionService service = ConversionServiceFactory.createDefaultConversionService();
 
 		public boolean canConvert(Class<?> sourceType, Class<?> targetType) {
 			return this.service.canConvert(sourceType, targetType);