alignment with 3.0.7 backports (SPR-8674)

org.springframework.core/src/main/java/org/springframework/core/convert/TypeDescriptor.java

@@ -241,7 +241,8 @@ public class TypeDescriptor {
 		if (value == null) {
 			return this;
 		}
-		return new TypeDescriptor(value.getClass(), elementTypeDescriptor, mapKeyTypeDescriptor, mapValueTypeDescriptor, annotations);
+		return new TypeDescriptor(value.getClass(), this.elementTypeDescriptor,
+				this.mapKeyTypeDescriptor, this.mapValueTypeDescriptor, this.annotations);
 	}
 
 	/**
@@ -513,7 +514,7 @@ public class TypeDescriptor {
 			return typeDescriptor.narrow(value);
 		}
 		else {
-			return value != null ? new TypeDescriptor(value.getClass(), null, null, null, annotations) : null;
+			return (value != null ? new TypeDescriptor(value.getClass(), null, null, null, this.annotations) : null);
 		}		
 	}
 

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

@@ -49,7 +49,8 @@ final class ArrayToCollectionConverter implements ConditionalGenericConverter {
 	}
 
 	public boolean matches(TypeDescriptor sourceType, TypeDescriptor targetType) {
-		return ConversionUtils.canConvertElements(sourceType.getElementTypeDescriptor(), targetType.getElementTypeDescriptor(), this.conversionService);
+		return ConversionUtils.canConvertElements(
+				sourceType.getElementTypeDescriptor(), targetType.getElementTypeDescriptor(), this.conversionService);
 	}
 
 	@SuppressWarnings("unchecked")
@@ -68,7 +69,8 @@ final class ArrayToCollectionConverter implements ConditionalGenericConverter {
 		else {
 			for (int i = 0; i < length; i++) {
 				Object sourceElement = Array.get(source, i);
-				Object targetElement = this.conversionService.convert(sourceElement, sourceType.elementTypeDescriptor(sourceElement), targetType.getElementTypeDescriptor());
+				Object targetElement = this.conversionService.convert(sourceElement,
+						sourceType.elementTypeDescriptor(sourceElement), targetType.getElementTypeDescriptor());
 				target.add(targetElement);
 			}
 		}		

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

@@ -45,7 +45,7 @@ final class ArrayToObjectConverter implements ConditionalGenericConverter {
 	public boolean matches(TypeDescriptor sourceType, TypeDescriptor targetType) {
 		return ConversionUtils.canConvertElements(sourceType.getElementTypeDescriptor(), targetType, this.conversionService);
 	}
-	
+
 	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
 		if (source == null) {
 			return null;

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

@@ -163,12 +163,15 @@ public class GenericConversionService implements ConfigurableConversionService {
 			return handleResult(sourceType, targetType, convertNullSource(sourceType, targetType));
 		}
 		if (source != null && !sourceType.getObjectType().isInstance(source)) {
-			throw new IllegalArgumentException("The source to convert from must be an instance of " + sourceType + "; instead it was a " + source.getClass().getName());
+			throw new IllegalArgumentException("The source to convert from must be an instance of " +
+					sourceType + "; instead it was a " + source.getClass().getName());
 		}
 		GenericConverter converter = getConverter(sourceType, targetType);
 		if (converter != null) {
-			return handleResult(sourceType, targetType, ConversionUtils.invokeConverter(converter, source, sourceType, targetType));
-		}  else {
+			Object result = ConversionUtils.invokeConverter(converter, source, sourceType, targetType);
+			return handleResult(sourceType, targetType, result);
+		}
+		else {
 			return handleConverterNotFound(source, sourceType, targetType);			
 		}
 	}
@@ -235,7 +238,7 @@ public class GenericConversionService implements ConfigurableConversionService {
 		ConverterCacheKey key = new ConverterCacheKey(sourceType, targetType);
 		GenericConverter converter = this.converterCache.get(key);
 		if (converter != null) {
-			return converter != NO_MATCH ? converter : null;
+			return (converter != NO_MATCH ? converter : null);
 		}
 		else {
 			converter = findConverterForClassPair(sourceType, targetType);
@@ -335,7 +338,8 @@ public class GenericConversionService implements ConfigurableConversionService {
 				}
 			}
 			return null;
-		} else {
+		}
+		else {
 			HashSet<Class<?>> interfaces = new LinkedHashSet<Class<?>>();
 			LinkedList<Class<?>> classQueue = new LinkedList<Class<?>>();
 			classQueue.addFirst(sourceObjectType);
@@ -393,7 +397,8 @@ public class GenericConversionService implements ConfigurableConversionService {
 				}
 			}
 			return matchConverter(converters.get(Object.class), sourceType, targetType);
-		} else if (targetObjectType.isArray()) {
+		}
+		else if (targetObjectType.isArray()) {
 			LinkedList<Class<?>> classQueue = new LinkedList<Class<?>>();
 			classQueue.addFirst(targetObjectType);
 			while (!classQueue.isEmpty()) {
@@ -463,7 +468,7 @@ public class GenericConversionService implements ConfigurableConversionService {
 			assertNotPrimitiveTargetType(sourceType, targetType);
 			return source;
 		}
-		else if (sourceType.isAssignableTo(targetType)) {
+		else if (sourceType.isAssignableTo(targetType) && targetType.getObjectType().isInstance(source)) {
 			return source;
 		}
 		else {
@@ -484,6 +489,7 @@ public class GenericConversionService implements ConfigurableConversionService {
 		}		
 	}
 	
+
 	@SuppressWarnings("unchecked")
 	private final class ConverterAdapter implements GenericConverter {
 
@@ -515,7 +521,6 @@ public class GenericConversionService implements ConfigurableConversionService {
 			return this.typeInfo.getSourceType().getName() + " -> " + this.typeInfo.getTargetType().getName() +
 					" : " + this.converter.toString();
 		}
-
 	}
 
 

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

@@ -200,7 +200,7 @@ public class CollectionToCollectionConverterTests {
 
 	@Test(expected=ConverterNotFoundException.class)
 	public void elementTypesNotConvertible() throws Exception {
-		List<Resource> resources = new ArrayList<Resource>();
+		List<String> resources = new ArrayList<String>();
 		resources.add(null);
 		resources.add(null);
 		TypeDescriptor sourceType = new TypeDescriptor(getClass().getField("strings")); 

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

@@ -1,10 +1,20 @@
-package org.springframework.core.convert.support;
+/*
+ * Copyright 2002-2011 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.
+ */
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
+package org.springframework.core.convert.support;
 
 import java.util.Arrays;
 import java.util.HashMap;
@@ -14,10 +24,13 @@ import java.util.Map;
 
 import org.junit.Before;
 import org.junit.Test;
+
 import org.springframework.core.convert.ConversionFailedException;
 import org.springframework.core.convert.ConverterNotFoundException;
 import org.springframework.core.convert.TypeDescriptor;
 
+import static org.junit.Assert.*;
+
 public class MapToMapConverterTests {
 
 	private GenericConversionService conversionService = new GenericConversionService();