found hotspot; added ConverisonServiceFactoryBean

org.springframework.beans/src/test/java/org/springframework/beans/factory/DefaultListableBeanFactoryTests.java

@@ -841,7 +841,7 @@ public void registerCustomEditors(PropertyEditorRegistry registry) {
 	@Test
 	public void testCustomConverter() {
 		DefaultListableBeanFactory lbf = new DefaultListableBeanFactory();
-		GenericConversionService conversionService = (GenericConversionService) ConversionServiceFactory.createDefault();
+		GenericConversionService conversionService = (GenericConversionService) ConversionServiceFactory.createDefaultConversionService();
 		conversionService.addConverter(new Converter<String, Float>() {
 			public Float convert(String source) {
 				try {

org.springframework.context/src/main/java/org/springframework/context/support/ConversionServiceFactoryBean.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright 2002-2009 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.context.support;
+
+import java.util.Set;
+
+import org.springframework.beans.factory.FactoryBean;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.core.convert.ConversionService;
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.core.convert.converter.ConverterFactory;
+import org.springframework.core.convert.converter.ConverterRegistry;
+import org.springframework.core.convert.converter.GenericConverter;
+import org.springframework.core.convert.support.ConversionServiceFactory;
+
+/**
+ * A factory for a ConversionService that installs default converters appropriate for most environments.
+ * Set the <code>converters</code> property to supplement or override the default converters.
+ * @author Keith Donald
+ * @since 3.0
+ * @see ConversionServiceFactory#createDefaultConversionService()
+ */
+public class ConversionServiceFactoryBean implements FactoryBean<ConversionService>, InitializingBean {
+
+	private Set<Object> converters;
+
+	private ConversionService conversionService;
+
+	/**
+	 * Configure the set of custom Converters that should be added.
+	 */
+	public void setConverters(Set<Object> converters) {
+		this.converters = converters;
+	}
+
+	// implementing InitializingBean
+
+	public void afterPropertiesSet() {
+		this.conversionService = createConversionService();
+		registerConverters(this.converters, (ConverterRegistry) this.conversionService);
+	}
+
+	// implementing FactoryBean
+
+	public ConversionService getObject() {
+		return this.conversionService;
+	}
+
+	public Class<? extends ConversionService> getObjectType() {
+		return ConversionService.class;
+	}
+
+	public boolean isSingleton() {
+		return true;
+	}
+
+	// subclassing hooks
+
+	/**
+	 * Creates the ConversionService instance returned by this factory bean.
+	 */
+	protected ConversionService createConversionService() {
+		return ConversionServiceFactory.createDefaultConversionService();
+	}
+
+	// internal helpers
+
+	private void registerConverters(Set<Object> converters, ConverterRegistry registry) {
+		if (converters != null) {
+			for (Object converter : converters) {
+				if (converter instanceof Converter<?, ?>) {
+					registry.addConverter((Converter<?, ?>) converter);
+				} else if (converter instanceof ConverterFactory<?, ?>) {
+					registry.addConverterFactory((ConverterFactory<?, ?>) converter);
+				} else if (converter instanceof GenericConverter) {
+					registry.addGenericConverter((GenericConverter) converter);
+				} else {
+					throw new IllegalArgumentException("Each converter must implement one of the Converter, ConverterFactory, or GenericConverter interfaces");
+				}
+			}
+		}		
+	}
+
+}

org.springframework.context/src/main/java/org/springframework/format/support/FormattingConversionService.java

@@ -41,7 +41,7 @@
  */
 public class FormattingConversionService implements FormatterRegistry, ConversionService {
 
-	private ConversionService conversionService = ConversionServiceFactory.createDefault();
+	private ConversionService conversionService = ConversionServiceFactory.createDefaultConversionService();
 
 	// implementing FormattingRegistry
 

org.springframework.context/src/main/java/org/springframework/format/support/FormattingConversionServiceFactoryBean.java

@@ -18,25 +18,30 @@
 import org.springframework.beans.factory.FactoryBean;
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.core.convert.ConversionService;
+import org.springframework.format.FormatterRegistry;
 import org.springframework.format.datetime.joda.JodaTimeFormattingConfigurer;
 import org.springframework.format.number.NumberFormatAnnotationFormatterFactory;
 import org.springframework.format.number.NumberFormatter;
 import org.springframework.util.ClassUtils;
 
 /**
  * A factory for a FormattingConversionService that installs default formatters for common types such as numbers and datetimes.
+ * Subclasses may override {@link #installFormatters(FormatterRegistry)} to register custom formatters.
  * @author Keith Donald
  * @since 3.0
  */
 public class FormattingConversionServiceFactoryBean implements FactoryBean<ConversionService>, InitializingBean {
 
-	private FormattingConversionService conversionService = new FormattingConversionService();
-
+	private static final boolean jodaTimePresent = ClassUtils.isPresent(
+			"org.joda.time.DateTime", FormattingConversionService.class.getClassLoader());
+
+	private FormattingConversionService conversionService;
+
 	// implementing InitializingBean
 
 	public void afterPropertiesSet() {
-		installNumberFormatting();
-		installJodaTimeFormattingIfPresent();
+		this.conversionService = new FormattingConversionService();
+		installFormatters(this.conversionService);
 	}
 
 	// implementing FactoryBean
@@ -45,25 +50,22 @@ public ConversionService getObject() {
 		return this.conversionService;
 	}
 
-	public Class<? extends ConversionService> getObjectType() {
+	public Class<ConversionService> getObjectType() {
 		return ConversionService.class;
 	}
 
 	public boolean isSingleton() {
 		return true;
 	}
 
-	// internal helpers
-
-	private void installNumberFormatting() {
-		this.conversionService.addFormatterForFieldType(Number.class, new NumberFormatter());
-		this.conversionService.addFormatterForFieldAnnotation(new NumberFormatAnnotationFormatterFactory());
-	}
+	// subclassing hooks 
 
-	private void installJodaTimeFormattingIfPresent() {
-		if (ClassUtils.isPresent("org.joda.time.DateTime", FormattingConversionService.class.getClassLoader())) {
-			new JodaTimeFormattingConfigurer().installJodaTimeFormatting(this.conversionService);			
-		}
+	protected void installFormatters(FormatterRegistry registry) {
+		registry.addFormatterForFieldType(Number.class, new NumberFormatter());
+		registry.addFormatterForFieldAnnotation(new NumberFormatAnnotationFormatterFactory());		
+		if (jodaTimePresent) {
+			new JodaTimeFormattingConfigurer().installJodaTimeFormatting(registry);			
+		}		
 	}
-	
+
 }

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

@@ -25,26 +25,14 @@
  */
 public final class ConversionServiceFactory {
 
-	private static ConversionService DEFAULT_INSTANCE;
-
 	private ConversionServiceFactory() {
 
 	}
 
-	/**
-	 * Get the shared default ConversionService.
-	 */
-	public static synchronized ConversionService getDefault() {
-		if (DEFAULT_INSTANCE == null) {
-			DEFAULT_INSTANCE = createDefault();
-		}
-		return DEFAULT_INSTANCE;
-	}
-
 	/**
 	 * Create a new default ConversionService prototype that can be safely modified.
 	 */
-	public static ConversionService createDefault() {
+	public static ConversionService createDefaultConversionService() {
 		GenericConversionService conversionService = new GenericConversionService();
 		conversionService.addGenericConverter(new ArrayToArrayConverter(conversionService));
 		conversionService.addGenericConverter(new ArrayToCollectionConverter(conversionService));

org.springframework.core/src/test/java/org/springframework/core/convert/support/DefaultConversionTests.java

@@ -48,25 +48,7 @@
 
 public class DefaultConversionTests {
 
-	private ConversionService conversionService = ConversionServiceFactory.getDefault();
-
-	@Test
-	@SuppressWarnings("unchecked")
-	public void testUnmodifiableListConversion() {
-		List<String> stringList = new ArrayList<String>();
-		stringList.add("foo");
-		stringList.add("bar");
-
-		List<String> frozenList = Collections.unmodifiableList(stringList);
-
-		List<String> converted = conversionService.convert(frozenList, List.class);
-
-		// The converted list should contain all the elements in the original list
-		Assert.assertEquals(frozenList, converted);
-		// Looks like it was supposed to be a copy (but CollectionToCollectionConverter
-		// doesn't work that way right now).  Commented out (DS).
-		// Assert.assertNotSame(frozenList, converted);
-	}
+	private ConversionService conversionService = ConversionServiceFactory.createDefaultConversionService();
 
 	@Test
 	public void testStringToCharacter() {
@@ -740,4 +722,22 @@ public void genericConverterDelegatingBackToConversionServiceConverterNotFound()
 		}
 	}
 
+	@Test
+	@SuppressWarnings("unchecked")
+	public void testUnmodifiableListConversion() {
+		List<String> stringList = new ArrayList<String>();
+		stringList.add("foo");
+		stringList.add("bar");
+
+		List<String> frozenList = Collections.unmodifiableList(stringList);
+
+		List<String> converted = conversionService.convert(frozenList, List.class);
+
+		// The converted list should contain all the elements in the original list
+		Assert.assertEquals(frozenList, converted);
+		// TODO Looks like it was supposed to be a copy (but CollectionToCollectionConverter
+		// doesn't work that way right now).  Commented out (DS).
+		// Assert.assertNotSame(frozenList, converted);
+	}
+
 }

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

@@ -37,10 +37,12 @@
  */
 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 Object convertValue(Object value, TypeDescriptor typeDescriptor) throws E
 		}
 	}
 
+	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 void testSetParameterizedList() throws Exception {
 	 */
 	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);