completed generic converter implementation

git-svn-id: https://src.springframework.org/svn/spring-framework/trunk@1974 50f2f4bb-b051-0410-bef5-90022cba6387

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

@@ -44,6 +44,8 @@ public class TypeDescriptor {
 
 	private Class<?> type;
 
+	private TypeDescriptor elementType;
+
 	private MethodParameter methodParameter;
 
 	private Field field;
@@ -88,6 +90,11 @@ public class TypeDescriptor {
 	private TypeDescriptor() {
 	}
 
+	private TypeDescriptor(Class collectionType, TypeDescriptor elementType) {
+		this.type = collectionType;
+		this.elementType = elementType;
+	}
+
 	/**
 	 * Return the wrapped MethodParameter, if any.
 	 * <p>Note: Either MethodParameter or Field is available.
@@ -113,14 +120,11 @@ public class TypeDescriptor {
 	public Class<?> getType() {
 		if (this.type != null) {
 			return this.type;
-		}
-		else if (this.field != null) {
+		} else if (this.field != null) {
 			return this.field.getType();
-		}
-		else if (this.methodParameter != null) {
+		} else if (this.methodParameter != null) {
 			return this.methodParameter.getParameterType();
-		}
-		else {
+		} else {
 			return null;
 		}
 	}
@@ -134,6 +138,15 @@ public class TypeDescriptor {
 		return type != null ? ClassUtils.resolvePrimitiveIfNecessary(type) : type;
 	}
 
+	/**
+	 * Does the underyling declared type equal the type provided?
+	 * @param type the type to test against
+	 */
+	public boolean typeEquals(Class<?> type) {
+		Class<?> thisType = getType();
+		return thisType != null ? thisType.equals(type) : false;
+	}
+
 	/**
 	 * Returns the name of this type; the fully qualified classname.
 	 */
@@ -141,8 +154,7 @@ public class TypeDescriptor {
 		Class<?> type = getType();
 		if (type != null) {
 			return getType().getName();
-		}
-		else {
+		} else {
 			return null;
 		}
 	}
@@ -167,22 +179,24 @@ public class TypeDescriptor {
 	 * Returns null if the type is neither an array or collection.
 	 */
 	public Class<?> getElementType() {
-		if (isArray()) {
-			return getArrayComponentType();
-		}
-		else if (isCollection()) {
-			return getCollectionElementType();
-		}
-		else {
-			return null;
-		}
+		return getElementTypeDescriptor().getType();
 	}
 
 	/**
 	 * Return the element type as a type descriptor.
 	 */
 	public TypeDescriptor getElementTypeDescriptor() {
-		return TypeDescriptor.valueOf(getElementType());
+		if (elementType != null) {
+			return elementType;
+		} else {
+			if (isArray()) {
+				return TypeDescriptor.valueOf(getArrayComponentType());
+			} else if (isCollection()) {
+				return TypeDescriptor.valueOf(getCollectionElementType());
+			} else {
+				return TypeDescriptor.NULL;
+			}			
+		}
 	}
 
 	/**
@@ -191,7 +205,7 @@ public class TypeDescriptor {
 	public boolean isMap() {
 		return isTypeAssignableTo(Map.class);
 	}
-	
+
 	/**
 	 * Is this descriptor for a map where the key type and value type are known? 
 	 */
@@ -206,11 +220,9 @@ public class TypeDescriptor {
 	public Class<?> getMapKeyType() {
 		if (this.field != null) {
 			return GenericCollectionTypeResolver.getMapKeyFieldType(field);
-		}
-		else if (this.methodParameter != null) {
+		} else if (this.methodParameter != null) {
 			return GenericCollectionTypeResolver.getMapKeyParameterType(this.methodParameter);
-		}
-		else {
+		} else {
 			return null;
 		}
 	}
@@ -222,11 +234,9 @@ public class TypeDescriptor {
 	public Class<?> getMapValueType() {
 		if (this.field != null) {
 			return GenericCollectionTypeResolver.getMapValueFieldType(this.field);
-		}
-		else if (this.methodParameter != null) {
+		} else if (this.methodParameter != null) {
 			return GenericCollectionTypeResolver.getMapValueParameterType(this.methodParameter);
-		}
-		else {
+		} else {
 			return null;
 		}
 	}
@@ -254,11 +264,9 @@ public class TypeDescriptor {
 				this.cachedFieldAnnotations = this.field.getAnnotations();
 			}
 			return this.cachedFieldAnnotations;
-		}
-		else if (this.methodParameter != null) {
+		} else if (this.methodParameter != null) {
 			return this.methodParameter.getMethod().getAnnotations();
-		}
-		else {
+		} else {
 			return new Annotation[0];
 		}
 	}
@@ -300,10 +308,9 @@ public class TypeDescriptor {
 		if (isArray()) {
 			// TODO should properly handle multi dimensional arrays
 			stringValue.append(getArrayComponentType().getName()).append("[]");
-		}
-		else {
+		} else {
 			Class<?> clazz = getType();
-			if (clazz==null) {
+			if (clazz == null) {
 				return "null";
 			}
 			stringValue.append(clazz.getName());
@@ -312,8 +319,7 @@ public class TypeDescriptor {
 				if (collectionType != null) {
 					stringValue.append("<").append(collectionType.getName()).append(">");
 				}
-			}
-			else if (isMap()) {
+			} else if (isMap()) {
 				Class<?> keyType = getMapKeyType();
 				Class<?> valType = getMapValueType();
 				if (keyType != null && valType != null) {
@@ -325,7 +331,6 @@ public class TypeDescriptor {
 		return stringValue.toString();
 	}
 
-
 	// internal helpers
 
 	private Class<?> getArrayComponentType() {
@@ -336,21 +341,18 @@ public class TypeDescriptor {
 	private Class<?> getCollectionElementType() {
 		if (this.type != null) {
 			return GenericCollectionTypeResolver.getCollectionType((Class<? extends Collection>) this.type);
-		}
-		else if (this.field != null) {
+		} else if (this.field != null) {
 			return GenericCollectionTypeResolver.getCollectionFieldType(this.field);
-		}
-		else {
+		} else {
 			return GenericCollectionTypeResolver.getCollectionParameterType(this.methodParameter);
 		}
 	}
-	
+
 	private boolean isTypeAssignableTo(Class<?> clazz) {
 		Class<?> type = getType();
 		return (type != null && ClassUtils.isAssignable(clazz, type));
 	}
 
-
 	// static factory methods
 
 	/**
@@ -371,4 +373,16 @@ public class TypeDescriptor {
 		return (object == null ? NULL : valueOf(object.getClass()));
 	}
 
+	public String toString() {
+		if (this == TypeDescriptor.NULL) {
+			return "[TypeDescriptor.NULL]";
+		} else {
+			return "[TypeDescriptor type=" + getType().getName() + "]";
+		}
+	}
+
+	public static TypeDescriptor collection(Class<?> type, TypeDescriptor elementType) {
+		return new TypeDescriptor(type, elementType);
+	}
+
 }

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

@@ -15,38 +15,20 @@
  */
 package org.springframework.core.convert.support;
 
-import static org.springframework.core.convert.support.ConversionUtils.invokeConverter;
+import static org.springframework.core.convert.support.ConversionUtils.asList;
 
-import java.lang.reflect.Array;
-
-import org.springframework.core.convert.ConverterNotFoundException;
 import org.springframework.core.convert.TypeDescriptor;
 
 final class ArrayToArrayGenericConverter implements GenericConverter {
 
-	private final GenericConversionService conversionService;
+	private final GenericConverter helperConverter;
 
 	public ArrayToArrayGenericConverter(GenericConversionService conversionService) {
-		this.conversionService = conversionService;
+		this.helperConverter = new CollectionToArrayGenericConverter(conversionService);
 	}
 
 	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
-		if (sourceType.isAssignableTo(targetType)) {
-			return source;
-		}
-		TypeDescriptor sourceElementType = sourceType.getElementTypeDescriptor();
-		TypeDescriptor targetElementType = targetType.getElementTypeDescriptor();
-		Object target = Array.newInstance(targetElementType.getType(), Array.getLength(source));
-		GenericConverter converter = this.conversionService.getConverter(sourceElementType, targetElementType);
-		if (converter == null) {
-			throw new ConverterNotFoundException(sourceElementType, targetElementType);
-		}
-		for (int i = 0; i < Array.getLength(target); i++) {
-			Object sourceElement = Array.get(source, i);
-			Object targetElement = invokeConverter(converter, sourceElement, sourceElementType, targetElementType);
-			Array.set(target, i, targetElement);
-		}
-		return target;
+		return this.helperConverter.convert(asList(source), sourceType, targetType);
 	}
 
 }

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

@@ -15,20 +15,20 @@
  */
 package org.springframework.core.convert.support;
 
+import static org.springframework.core.convert.support.ConversionUtils.asList;
+
 import org.springframework.core.convert.TypeDescriptor;
 
-final class StringToMapGenericConverter implements GenericConverter {
+final class ArrayToMapGenericConverter implements GenericConverter {
+
+	private final GenericConverter helperConverter;
 
-	private final StringArrayToMapGenericConverter converter;
-	
-	public StringToMapGenericConverter(GenericConversionService conversionService) {
-		this.converter = new StringArrayToMapGenericConverter(conversionService);
+	public ArrayToMapGenericConverter(GenericConversionService conversionService) {
+		this.helperConverter = new CollectionToMapGenericConverter(conversionService);
 	}
 
 	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
-		String string = (String) source;
-		String[] properties = string.split(" ");
-		return this.converter.convert(properties, TypeDescriptor.valueOf(String[].class), targetType);
+		return this.helperConverter.convert(asList(source), sourceType, targetType);
 	}
 
-}
+}

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

@@ -15,37 +15,20 @@
  */
 package org.springframework.core.convert.support;
 
-import static org.springframework.core.convert.support.ConversionUtils.invokeConverter;
+import static org.springframework.core.convert.support.ConversionUtils.asList;
 
-import java.lang.reflect.Array;
-
-import org.springframework.core.convert.ConverterNotFoundException;
 import org.springframework.core.convert.TypeDescriptor;
 
 final class ArrayToObjectGenericConverter implements GenericConverter {
 
-	private final GenericConversionService conversionService;
+	private CollectionToObjectGenericConverter helperConverter;
 
 	public ArrayToObjectGenericConverter(GenericConversionService conversionService) {
-		this.conversionService = conversionService;
+		this.helperConverter = new CollectionToObjectGenericConverter(conversionService);
 	}
 
 	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
-		int length = Array.getLength(source);
-		if (length == 0) {
-			return null;
-		} else {
-			TypeDescriptor sourceElementType = sourceType.getElementTypeDescriptor();
-			if (sourceElementType.isAssignableTo(targetType)) {
-				return Array.get(source, 0);
-			} else {
-				GenericConverter converter = this.conversionService.getConverter(sourceElementType, targetType);
-				if (converter == null) {
-					throw new ConverterNotFoundException(sourceElementType, targetType);
-				}
-				return invokeConverter(converter, Array.get(source, 0), sourceElementType, targetType);
-			}
-		}
+		return this.helperConverter.convert(asList(source), sourceType, targetType);
 	}
 
 }

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

@@ -1,69 +0,0 @@
-/*
- * 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.core.convert.support;
-
-import static org.springframework.core.convert.support.ConversionUtils.invokeConverter;
-
-import java.lang.reflect.Array;
-
-import org.springframework.core.convert.ConverterNotFoundException;
-import org.springframework.core.convert.TypeDescriptor;
-
-final class ArrayToStringGenericConverter implements GenericConverter {
-
-	private static final String DELIMITER = ",";
-	
-	private final GenericConversionService conversionService;
-
-	public ArrayToStringGenericConverter(GenericConversionService conversionService) {
-		this.conversionService = conversionService;
-	}
-
-	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
-		int length = Array.getLength(source);
-		if (length == 0) {
-			return "";
-		} else {
-			TypeDescriptor sourceElementType = sourceType.getElementTypeDescriptor();
-			if (sourceElementType.isAssignableTo(targetType)) {
-				StringBuilder string = new StringBuilder();
-				for (int i = 0; i < length; i++) {
-					if (i > 0) {
-						string.append(DELIMITER);
-					}
-					string.append(Array.get(source, i));
-				}
-				return string.toString();
-			} else {
-				GenericConverter converter = this.conversionService.getConverter(sourceElementType, targetType);
-				if (converter == null) {
-					throw new ConverterNotFoundException(sourceElementType, targetType);
-				}
-				StringBuilder string = new StringBuilder();				
-				for (int i = 0; i < length; i++) {
-					if (i > 0) {
-						string.append(DELIMITER);
-					}
-					Object sourceElement = Array.get(source, i);
-					Object targetElement = invokeConverter(converter, sourceElement, sourceElementType, targetType);
-					string.append(targetElement);
-				}
-				return string.toString();
-			}
-		}
-	}
-
-}

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

@@ -0,0 +1,96 @@
+/*
+ * 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.core.convert.support;
+
+import static org.springframework.core.convert.support.ConversionUtils.getElementType;
+
+import java.util.Collection;
+import java.util.Map;
+
+import org.springframework.core.CollectionFactory;
+import org.springframework.core.convert.TypeDescriptor;
+
+final class CollectionToMapGenericConverter implements GenericConverter {
+
+	private final GenericConversionService conversionService;
+
+	public CollectionToMapGenericConverter(GenericConversionService conversionService) {
+		this.conversionService = conversionService;
+	}
+
+	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
+		Collection sourceCollection = (Collection) source;
+		TypeDescriptor sourceElementType = sourceType.getElementTypeDescriptor();
+		if (sourceElementType == TypeDescriptor.NULL) {
+			sourceElementType = getElementType(sourceCollection);
+		}
+		TypeDescriptor targetKeyType = targetType.getMapKeyTypeDescriptor();
+		TypeDescriptor targetValueType = targetType.getMapValueTypeDescriptor();
+		boolean keysCompatible = false;
+		if (sourceElementType == TypeDescriptor.NULL || targetKeyType == TypeDescriptor.NULL
+				|| sourceElementType.isAssignableTo(targetKeyType)) {
+			keysCompatible = true;
+		}
+		boolean valuesCompatible = false;
+		if (sourceElementType == TypeDescriptor.NULL || targetValueType == TypeDescriptor.NULL
+				|| sourceElementType.isAssignableTo(targetValueType)) {
+			valuesCompatible = true;
+		}
+		if (keysCompatible && valuesCompatible) {
+			Map target = CollectionFactory.createMap(targetType.getType(), sourceCollection.size());
+			if (sourceElementType.typeEquals(String.class)) {
+				for (Object element : sourceCollection) {
+					String[] property = parseProperty((String) element);
+					target.put(property[0], property[1]);
+				}
+			} else {
+				for (Object element : sourceCollection) {
+					target.put(element, element);
+				}
+			}
+			return target;
+		} else {
+			Map target = CollectionFactory.createMap(targetType.getType(), sourceCollection.size());
+			MapEntryConverter converter = new MapEntryConverter(sourceElementType, sourceElementType, targetKeyType,
+					targetValueType, keysCompatible, valuesCompatible, conversionService);
+			if (sourceElementType.typeEquals(String.class)) {
+				for (Object element : sourceCollection) {
+					String[] property = parseProperty((String) element);
+					Object targetKey = converter.convertKey(property[0]);
+					Object targetValue = converter.convertValue(property[1]);
+					target.put(targetKey, targetValue);
+				}
+			} else {
+				for (Object element : sourceCollection) {
+					Object targetKey = converter.convertKey(element);
+					Object targetValue = converter.convertValue(element);
+					target.put(targetKey, targetValue);
+				}
+			}
+			return target;
+		}
+	}
+
+	private String[] parseProperty(String string) {
+		String[] property = string.split("=");
+		if (property.length < 2) {
+			throw new IllegalArgumentException("Invalid String property '" + property
+					+ "'; properties should be in the format name=value");
+		}
+		return property;
+	}
+
+}

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

@@ -15,6 +15,7 @@
  */
 package org.springframework.core.convert.support;
 
+import static org.springframework.core.convert.support.ConversionUtils.getElementType;
 import static org.springframework.core.convert.support.ConversionUtils.invokeConverter;
 
 import java.util.Collection;
@@ -24,6 +25,8 @@ import org.springframework.core.convert.TypeDescriptor;
 
 final class CollectionToObjectGenericConverter implements GenericConverter {
 
+	private static final String DELIMITER = ",";
+
 	private final GenericConversionService conversionService;
 
 	public CollectionToObjectGenericConverter(GenericConversionService conversionService) {
@@ -33,21 +36,60 @@ final class CollectionToObjectGenericConverter implements GenericConverter {
 	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
 		Collection sourceCollection = (Collection) source;
 		if (sourceCollection.size() == 0) {
-			return null;
+			if (targetType.typeEquals(String.class)) {
+				return "";
+			} else {
+				return null;
+			}
 		} else {
-			Object firstElement = sourceCollection.iterator().next();			
-			TypeDescriptor sourceElementType = sourceType.getElementTypeDescriptor();
-			if (sourceElementType == TypeDescriptor.NULL && firstElement != null) {
-				sourceElementType = TypeDescriptor.valueOf(firstElement.getClass());
-			}			
-			if (sourceElementType == TypeDescriptor.NULL || sourceElementType.isAssignableTo(targetType)) {
-				return firstElement;
+			if (targetType.typeEquals(String.class)) {
+				TypeDescriptor sourceElementType = sourceType.getElementTypeDescriptor();
+				if (sourceElementType == TypeDescriptor.NULL) {
+					sourceElementType = getElementType(sourceCollection);
+				}
+				if (sourceElementType == TypeDescriptor.NULL || sourceElementType.isAssignableTo(targetType)) {
+					StringBuilder string = new StringBuilder();
+					int i = 0;
+					for (Object element : sourceCollection) {
+						if (i > 0) {
+							string.append(DELIMITER);
+						}
+						string.append(element);
+						i++;
+					}
+					return string.toString();
+				} else {
+					GenericConverter converter = this.conversionService.getConverter(sourceElementType, targetType);
+					if (converter == null) {
+						throw new ConverterNotFoundException(sourceElementType, targetType);
+					}
+					StringBuilder string = new StringBuilder();
+					int i = 0;
+					for (Object sourceElement : sourceCollection) {
+						if (i > 0) {
+							string.append(DELIMITER);
+						}
+						Object targetElement = invokeConverter(converter, sourceElement, sourceElementType, targetType);
+						string.append(targetElement);
+						i++;
+					}
+					return string.toString();
+				}
 			} else {
-				GenericConverter converter = this.conversionService.getConverter(sourceElementType, targetType);
-				if (converter == null) {
-					throw new ConverterNotFoundException(sourceElementType, targetType);
-				}				
-				return invokeConverter(converter, firstElement, sourceElementType, targetType);
+				Object firstElement = sourceCollection.iterator().next();
+				TypeDescriptor sourceElementType = sourceType.getElementTypeDescriptor();
+				if (sourceElementType == TypeDescriptor.NULL && firstElement != null) {
+					sourceElementType = TypeDescriptor.valueOf(firstElement.getClass());
+				}
+				if (sourceElementType == TypeDescriptor.NULL || sourceElementType.isAssignableTo(targetType)) {
+					return firstElement;
+				} else {
+					GenericConverter converter = this.conversionService.getConverter(sourceElementType, targetType);
+					if (converter == null) {
+						throw new ConverterNotFoundException(sourceElementType, targetType);
+					}
+					return invokeConverter(converter, firstElement, sourceElementType, targetType);
+				}
 			}
 		}
 	}

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

@@ -1,75 +0,0 @@
-/*
- * 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.core.convert.support;
-
-import static org.springframework.core.convert.support.ConversionUtils.getElementType;
-import static org.springframework.core.convert.support.ConversionUtils.invokeConverter;
-
-import java.util.Collection;
-
-import org.springframework.core.convert.ConverterNotFoundException;
-import org.springframework.core.convert.TypeDescriptor;
-
-final class CollectionToStringGenericConverter implements GenericConverter {
-
-	private static final String DELIMITER = ",";
-
-	private final GenericConversionService conversionService;
-
-	public CollectionToStringGenericConverter(GenericConversionService conversionService) {
-		this.conversionService = conversionService;
-	}
-
-	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
-		Collection sourceCollection = (Collection) source;
-		if (sourceCollection.size() == 0) {
-			return "";
-		} else {
-			TypeDescriptor sourceElementType = sourceType.getElementTypeDescriptor();
-			if (sourceElementType == TypeDescriptor.NULL) {
-				sourceElementType = getElementType(sourceCollection);
-			}			
-			if (sourceElementType == TypeDescriptor.NULL || sourceElementType.isAssignableTo(targetType)) {
-				StringBuilder string = new StringBuilder();
-				int i = 0;
-				for (Object element : sourceCollection) {
-					if (i > 0) {
-						string.append(DELIMITER);
-					}
-					string.append(element);
-					i++;
-				}
-				return string.toString();
-			} else {
-				GenericConverter converter = this.conversionService.getConverter(sourceElementType, targetType);
-				if (converter == null) {
-					throw new ConverterNotFoundException(sourceElementType, targetType);
-				}
-				StringBuilder string = new StringBuilder();
-				int i = 0;
-				for (Object sourceElement : sourceCollection) {
-					if (i > 0) {
-						string.append(DELIMITER);
-					}
-					Object targetElement = invokeConverter(converter, sourceElement, sourceElementType, targetType);
-					string.append(targetElement);
-					i++;
-				}
-				return string.toString();
-			}
-		}
-	}
-}

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

@@ -15,7 +15,11 @@
  */
 package org.springframework.core.convert.support;
 
+import java.lang.reflect.Array;
+import java.util.AbstractList;
 import java.util.Collection;
+import java.util.List;
+import java.util.RandomAccess;
 
 import org.springframework.core.convert.ConversionFailedException;
 import org.springframework.core.convert.TypeDescriptor;
@@ -39,4 +43,27 @@ final class ConversionUtils {
 		}
 		return TypeDescriptor.NULL;
 	}
+	
+
+	public static List asList(Object array) {
+		return new ArrayList(array);
+	}
+	
+	private static class ArrayList extends AbstractList implements RandomAccess, java.io.Serializable {
+
+		private Object array;
+
+		ArrayList(Object array) {
+			this.array = array;
+		}
+
+		public int size() {
+			return Array.getLength(array);
+		}
+
+		public Object get(int index) {
+			return Array.get(array, index);
+		}
+		
+	}
 }

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

@@ -182,27 +182,21 @@ public class GenericConversionService implements ConversionService, ConverterReg
 	 * Hook to initialize the "generic" converters that require the full TypeDescriptor context to perform their conversion operations.
 	 */
 	protected void initGenericConverters() {
-		addGenericConverter(String[].class, Map.class, new StringArrayToMapGenericConverter(this));
 		addGenericConverter(Object[].class, Object[].class, new ArrayToArrayGenericConverter(this));
 		addGenericConverter(Object[].class, Collection.class, new ArrayToCollectionGenericConverter(this));
-		addGenericConverter(Object[].class, String.class, new ArrayToStringGenericConverter(this));
+		addGenericConverter(Object[].class, Map.class, new ArrayToMapGenericConverter(this));
 		addGenericConverter(Object[].class, Object.class, new ArrayToObjectGenericConverter(this));
-		// TODO Collection->Map
 		addGenericConverter(Collection.class, Collection.class, new CollectionToCollectionGenericConverter(this));
 		addGenericConverter(Collection.class, Object[].class, new CollectionToArrayGenericConverter(this));
-		addGenericConverter(Collection.class, String.class, new CollectionToStringGenericConverter(this));
+		addGenericConverter(Collection.class, Map.class, new CollectionToMapGenericConverter(this));
 		addGenericConverter(Collection.class, Object.class, new CollectionToObjectGenericConverter(this));
 		addGenericConverter(Map.class, Map.class, new MapToMapGenericConverter(this));
-		addGenericConverter(Map.class, String[].class, new MapToStringArrayGenericConverter(this));
-		// TODO Map->Collection
-		// TODO Map->String
-		// TODO Map->Object
-		addGenericConverter(String.class, Object[].class, new StringToArrayGenericConverter(this));
-		addGenericConverter(String.class, Collection.class, new StringToCollectionGenericConverter(this));
-		addGenericConverter(String.class, Map.class, new StringToMapGenericConverter(this));
+		addGenericConverter(Map.class, Object[].class, new MapToArrayGenericConverter(this));
+		addGenericConverter(Map.class, Collection.class, new MapToCollectionGenericConverter(this));
+		addGenericConverter(Map.class, Object.class, new MapToObjectGenericConverter(this));
 		addGenericConverter(Object.class, Object[].class, new ObjectToArrayGenericConverter(this));
 		addGenericConverter(Object.class, Collection.class, new ObjectToCollectionGenericConverter(this));
-		// TODO Object->Map
+		addGenericConverter(Object.class, Map.class, new ObjectToMapGenericConverter(this));
 	}
 
 	/**

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

@@ -0,0 +1,39 @@
+/*
+ * 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.core.convert.support;
+
+import java.util.List;
+
+import org.springframework.core.convert.TypeDescriptor;
+
+final class MapToArrayGenericConverter implements GenericConverter {
+
+	private final GenericConverter mapToCollectionHelperConverter;
+
+	private final GenericConverter collectionToArrayHelperConverter;
+
+	public MapToArrayGenericConverter(GenericConversionService conversionService) {
+		this.mapToCollectionHelperConverter = new MapToCollectionGenericConverter(conversionService);
+		this.collectionToArrayHelperConverter = new CollectionToArrayGenericConverter(conversionService);
+	}
+
+	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
+		TypeDescriptor collectionType = TypeDescriptor.collection(List.class, targetType.getElementTypeDescriptor());
+		Object collection = this.mapToCollectionHelperConverter.convert(source, sourceType, collectionType);
+		return this.collectionToArrayHelperConverter.convert(collection, collectionType, targetType);
+	}
+
+}

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

@@ -15,44 +15,49 @@
  */
 package org.springframework.core.convert.support;
 
-import java.lang.reflect.Array;
+import java.util.Collection;
 import java.util.Map;
 
+import org.springframework.core.CollectionFactory;
 import org.springframework.core.convert.TypeDescriptor;
 
-final class MapToStringArrayGenericConverter implements GenericConverter {
+final class MapToCollectionGenericConverter implements GenericConverter {
 
 	private final GenericConversionService conversionService;
 
-	public MapToStringArrayGenericConverter(GenericConversionService conversionService) {
+	public MapToCollectionGenericConverter(GenericConversionService conversionService) {
 		this.conversionService = conversionService;
 	}
 
 	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
 		Map sourceMap = (Map) source;
 		TypeDescriptor sourceKeyType = sourceType.getMapKeyTypeDescriptor();
-		TypeDescriptor sourceValueType = sourceType.getMapValueTypeDescriptor();		
+		TypeDescriptor sourceValueType = sourceType.getMapValueTypeDescriptor();
 		TypeDescriptor targetElementType = targetType.getElementTypeDescriptor();
 		boolean keysCompatible = false;
-		if (sourceKeyType.isAssignableTo(targetElementType)) {
+		if (targetElementType == TypeDescriptor.NULL || sourceKeyType.isAssignableTo(targetElementType)) {
 			keysCompatible = true;
 		}
 		boolean valuesCompatible = false;
-		if (sourceValueType.isAssignableTo(targetElementType)) {
+		if (targetElementType == TypeDescriptor.NULL || sourceValueType.isAssignableTo(targetElementType)) {
 			valuesCompatible = true;
-		}		
-		Object array = Array.newInstance(targetElementType.getType(), sourceMap.size());
-		MapEntryConverter converter = new MapEntryConverter(sourceKeyType, sourceValueType, targetElementType, targetElementType, keysCompatible, valuesCompatible, conversionService);		
-		int i = 0;
-		for (Object entry : sourceMap.entrySet()) {
-			Map.Entry mapEntry = (Map.Entry) entry;
-			Object key = mapEntry.getKey();
-			Object value = mapEntry.getValue();
-			String property = converter.convertKey(key) + "=" + converter.convertValue(value);
-			Array.set(array, i, property);
-			i++;
 		}
-		return array;		
+		Collection target = CollectionFactory.createCollection(targetType.getType(), sourceMap.size());
+		MapEntryConverter converter = new MapEntryConverter(sourceKeyType, sourceValueType, targetElementType,
+				targetElementType, keysCompatible, valuesCompatible, conversionService);
+		if (targetElementType.getType().equals(String.class)) {
+			for (Object entry : sourceMap.entrySet()) {
+				Map.Entry mapEntry = (Map.Entry) entry;
+				String property = converter.convertKey(mapEntry.getKey()) + "="
+						+ converter.convertValue(mapEntry.getValue());
+				target.add(property);
+			}
+		} else {
+			for (Object value : sourceMap.values()) {
+				target.add(value);
+			}			
+		}
+		return target;
 	}
 
 }

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

@@ -1,6 +1,5 @@
 package org.springframework.core.convert.support;
 
-
 import java.util.Map;
 
 import org.springframework.core.CollectionFactory;
@@ -28,22 +27,25 @@ final class MapToMapGenericConverter implements GenericConverter {
 			return compatibleMapWithoutEntryConversion(sourceMap, targetType);
 		}
 		boolean keysCompatible = false;
-		if (sourceKeyType != TypeDescriptor.NULL && targetKeyType != TypeDescriptor.NULL && sourceKeyType.isAssignableTo(targetKeyType)) {
+		if (sourceKeyType != TypeDescriptor.NULL && targetKeyType != TypeDescriptor.NULL
+				&& sourceKeyType.isAssignableTo(targetKeyType)) {
 			keysCompatible = true;
 		}
 		boolean valuesCompatible = false;
-		if (sourceValueType != TypeDescriptor.NULL && targetValueType != TypeDescriptor.NULL && sourceValueType.isAssignableTo(targetValueType)) {
+		if (sourceValueType != TypeDescriptor.NULL && targetValueType != TypeDescriptor.NULL
+				&& sourceValueType.isAssignableTo(targetValueType)) {
 			valuesCompatible = true;
 		}
 		if (keysCompatible && valuesCompatible) {
 			return compatibleMapWithoutEntryConversion(sourceMap, targetType);
 		}
 		Map targetMap = CollectionFactory.createMap(targetType.getType(), sourceMap.size());
-		MapEntryConverter converter = new MapEntryConverter(sourceKeyType, sourceValueType, targetKeyType, targetValueType, keysCompatible, valuesCompatible, conversionService);
+		MapEntryConverter converter = new MapEntryConverter(sourceKeyType, sourceValueType, targetKeyType,
+				targetValueType, keysCompatible, valuesCompatible, conversionService);
 		for (Object entry : sourceMap.entrySet()) {
 			Map.Entry sourceMapEntry = (Map.Entry) entry;
 			Object targetKey = converter.convertKey(sourceMapEntry.getKey());
-			Object targetValue = converter.convertValue(sourceMapEntry.getValue()); 
+			Object targetValue = converter.convertValue(sourceMapEntry.getValue());
 			targetMap.put(targetKey, targetValue);
 		}
 		return targetMap;

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

@@ -0,0 +1,100 @@
+/*
+ * 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.core.convert.support;
+
+import java.util.Map;
+
+import org.springframework.core.convert.TypeDescriptor;
+
+final class MapToObjectGenericConverter implements GenericConverter {
+
+	private static final String DELIMITER = " ";
+
+	private final GenericConversionService conversionService;
+
+	public MapToObjectGenericConverter(GenericConversionService conversionService) {
+		this.conversionService = conversionService;
+	}
+
+	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
+		Map sourceMap = (Map) source;
+		if (sourceMap.size() == 0) {
+			if (targetType.typeEquals(String.class)) {
+				return "";
+			} else {
+				return null;
+			}
+		} else {
+			if (targetType.typeEquals(String.class)) {
+				TypeDescriptor sourceKeyType = sourceType.getMapKeyTypeDescriptor();
+				TypeDescriptor sourceValueType = sourceType.getMapValueTypeDescriptor();
+				boolean keysCompatible = false;
+				if (sourceKeyType == TypeDescriptor.NULL || sourceKeyType.isAssignableTo(targetType)) {
+					keysCompatible = true;
+				}
+				boolean valuesCompatible = false;
+				if (sourceValueType == TypeDescriptor.NULL || sourceValueType.isAssignableTo(targetType)) {
+					valuesCompatible = true;
+				}
+				if (keysCompatible && valuesCompatible) {
+					StringBuilder string = new StringBuilder();
+					int i = 0;
+					for (Object entry : sourceMap.entrySet()) {
+						Map.Entry mapEntry = (Map.Entry) entry;
+						if (i > 0) {
+							string.append(DELIMITER);
+						}
+						String property = mapEntry.getKey() + "=" + mapEntry.getValue();
+						string.append(property);
+						i++;
+					}
+					return string.toString();
+				} else {
+					MapEntryConverter converter = new MapEntryConverter(sourceKeyType, sourceValueType, targetType, targetType,
+							keysCompatible, valuesCompatible, conversionService);
+					StringBuilder string = new StringBuilder();
+					int i = 0;
+					for (Object entry : sourceMap.entrySet()) {
+						Map.Entry mapEntry = (Map.Entry) entry;
+						if (i > 0) {
+							string.append(DELIMITER);
+						}
+						Object key = converter.convertKey(mapEntry.getKey());
+						Object value = converter.convertValue(mapEntry.getValue());
+						String property = key + "=" + value;
+						string.append(property);
+						i++;
+					}
+					return string.toString();
+				}
+			} else {
+				TypeDescriptor sourceValueType = sourceType.getMapValueTypeDescriptor();
+				boolean valuesCompatible = false;
+				if (sourceValueType == TypeDescriptor.NULL || sourceValueType.isAssignableTo(targetType)) {
+					valuesCompatible = true;
+				}
+				if (valuesCompatible) {
+					return sourceMap.values().iterator().next();
+				} else {
+					MapEntryConverter converter = new MapEntryConverter(sourceValueType, sourceValueType, targetType, targetType,
+							true, valuesCompatible, conversionService);
+					Object value = sourceMap.values().iterator().next();
+					return converter.convertValue(value);
+				}
+			}
+		}
+	}
+}

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

@@ -21,6 +21,7 @@ import java.lang.reflect.Array;
 
 import org.springframework.core.convert.ConverterNotFoundException;
 import org.springframework.core.convert.TypeDescriptor;
+import org.springframework.util.StringUtils;
 
 final class ObjectToArrayGenericConverter implements GenericConverter {
 
@@ -32,17 +33,35 @@ final class ObjectToArrayGenericConverter implements GenericConverter {
 
 	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
 		TypeDescriptor targetElementType = targetType.getElementTypeDescriptor();
-		Object target = Array.newInstance(targetElementType.getType(), 1);
-		if (sourceType.isAssignableTo(targetElementType)) {
-			Array.set(target, 0, source);
+		if (sourceType.typeEquals(String.class)) {
+			String string = (String) source;
+			String[] fields = StringUtils.commaDelimitedListToStringArray(string);
+			if (sourceType.isAssignableTo(targetElementType)) {
+				return fields;
+			} else {
+				Object target = Array.newInstance(targetElementType.getType(), fields.length);
+				GenericConverter converter = this.conversionService.getConverter(sourceType, targetElementType);
+				if (converter == null) {
+					throw new ConverterNotFoundException(sourceType, targetElementType);
+				}
+				for (int i = 0; i < fields.length; i++) {
+					Array.set(target, i, invokeConverter(converter, fields[i], sourceType, targetElementType));
+				}
+				return target;
+			}
 		} else {
-			GenericConverter converter = this.conversionService.getConverter(sourceType, targetElementType);
-			if (converter == null) {
-				throw new ConverterNotFoundException(sourceType, targetElementType);
+			Object target = Array.newInstance(targetElementType.getType(), 1);
+			if (sourceType.isAssignableTo(targetElementType)) {
+				Array.set(target, 0, source);
+			} else {
+				GenericConverter converter = this.conversionService.getConverter(sourceType, targetElementType);
+				if (converter == null) {
+					throw new ConverterNotFoundException(sourceType, targetElementType);
+				}
+				Array.set(target, 0, invokeConverter(converter, source, sourceType, targetElementType));
 			}
-			Array.set(target, 0, invokeConverter(converter, source, sourceType, targetElementType));
+			return target;
 		}
-		return target;
 	}
 
 }

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

@@ -22,6 +22,7 @@ import java.util.Collection;
 import org.springframework.core.CollectionFactory;
 import org.springframework.core.convert.ConverterNotFoundException;
 import org.springframework.core.convert.TypeDescriptor;
+import org.springframework.util.StringUtils;
 
 final class ObjectToCollectionGenericConverter implements GenericConverter {
 
@@ -32,18 +33,41 @@ final class ObjectToCollectionGenericConverter implements GenericConverter {
 	}
 
 	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
-		Collection target = CollectionFactory.createCollection(targetType.getType(), 1);
 		TypeDescriptor targetElementType = targetType.getElementTypeDescriptor();
-		if (targetElementType == TypeDescriptor.NULL || sourceType.isAssignableTo(targetElementType)) {
-			target.add(source);
+		if (sourceType.typeEquals(String.class)) {
+			String string = (String) source;
+			String[] fields = StringUtils.commaDelimitedListToStringArray(string);
+			Collection target = CollectionFactory.createCollection(targetType.getType(), fields.length);
+			if (targetElementType == TypeDescriptor.NULL || sourceType.isAssignableTo(targetElementType)) {
+				for (int i = 0; i < fields.length; i++) {
+					target.add(fields[i]);				
+				}
+			} else {
+				GenericConverter converter = this.conversionService.getConverter(sourceType, targetElementType);
+				if (converter == null) {
+					throw new ConverterNotFoundException(sourceType, targetElementType);
+				}
+				for (int i = 0; i < fields.length; i++) {
+					String sourceElement = fields[i];
+					Object targetElement = invokeConverter(converter, sourceElement, sourceType, targetElementType);
+					target.add(targetElement);				
+				}
+			}
+			return target;
+
 		} else {
-			GenericConverter converter = this.conversionService.getConverter(sourceType, targetElementType);
-			if (converter == null) {
-				throw new ConverterNotFoundException(sourceType, targetElementType);
+			Collection target = CollectionFactory.createCollection(targetType.getType(), 1);			
+			if (targetElementType == TypeDescriptor.NULL || sourceType.isAssignableTo(targetElementType)) {
+				target.add(source);
+			} else {
+				GenericConverter converter = this.conversionService.getConverter(sourceType, targetElementType);
+				if (converter == null) {
+					throw new ConverterNotFoundException(sourceType, targetElementType);
+				}
+				target.add(invokeConverter(converter, source, sourceType, targetElementType));
 			}
-			target.add(invokeConverter(converter, source, sourceType, targetElementType));
+			return target;
 		}
-		return target;
 	}
 
 }

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

@@ -0,0 +1,64 @@
+/*
+ * 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.core.convert.support;
+
+import java.util.Map;
+
+import org.springframework.core.CollectionFactory;
+import org.springframework.core.convert.TypeDescriptor;
+
+final class ObjectToMapGenericConverter implements GenericConverter {
+
+	private final GenericConversionService conversionService;
+	
+	private final ArrayToMapGenericConverter helperConverter;
+
+	public ObjectToMapGenericConverter(GenericConversionService conversionService) {
+		this.conversionService = conversionService;
+		this.helperConverter = new ArrayToMapGenericConverter(conversionService);
+	}
+
+	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
+		if (sourceType.typeEquals(String.class)) {
+			String string = (String) source;
+			String[] properties = string.split(" ");
+			return this.helperConverter.convert(properties, TypeDescriptor.valueOf(String[].class), targetType);
+		} else {
+			Map target = CollectionFactory.createMap(targetType.getType(), 1);
+			TypeDescriptor targetKeyType = targetType.getMapKeyTypeDescriptor();
+			TypeDescriptor targetValueType = targetType.getMapValueTypeDescriptor();
+			boolean keysCompatible = false;
+			if (targetKeyType == TypeDescriptor.NULL || sourceType.isAssignableTo(targetKeyType)) {
+				keysCompatible = true;
+			}
+			boolean valuesCompatible = false;
+			if (targetValueType == TypeDescriptor.NULL || sourceType.isAssignableTo(targetValueType)) {
+				valuesCompatible = true;
+			}
+			if (keysCompatible && valuesCompatible) {
+				target.put(source, source);
+			} else {
+				MapEntryConverter converter = new MapEntryConverter(sourceType, sourceType, targetKeyType,
+						targetValueType, keysCompatible, valuesCompatible, conversionService);
+				Object key = converter.convertKey(source);
+				Object value = converter.convertValue(source);
+				target.put(key, value);
+			}
+			return target;
+		}
+	}
+
+}

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

@@ -1,84 +0,0 @@
-/*
- * 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.core.convert.support;
-
-import java.lang.reflect.Array;
-import java.util.Map;
-
-import org.springframework.core.CollectionFactory;
-import org.springframework.core.convert.TypeDescriptor;
-
-final class StringArrayToMapGenericConverter implements GenericConverter {
-
-	private final GenericConversionService conversionService;
-
-	public StringArrayToMapGenericConverter(GenericConversionService conversionService) {
-		this.conversionService = conversionService;
-	}
-
-	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
-		TypeDescriptor targetKeyType = targetType.getMapKeyTypeDescriptor();
-		TypeDescriptor targetValueType = targetType.getMapValueTypeDescriptor();
-		if (targetKeyType == TypeDescriptor.NULL && targetValueType == TypeDescriptor.NULL) {
-			return mapWithoutConversion(source, targetType);
-		}
-		TypeDescriptor sourceElementType = sourceType.getElementTypeDescriptor();
-		boolean keysCompatible = false;
-		if (sourceElementType.isAssignableTo(targetKeyType)) {
-			keysCompatible = true;
-		}
-		boolean valuesCompatible = false;
-		if (sourceElementType.isAssignableTo(targetValueType)) {
-			valuesCompatible = true;
-		}
-		if (keysCompatible && valuesCompatible) {
-			return mapWithoutConversion(source, targetType);
-		}
-		int length = Array.getLength(source);
-		Map target = CollectionFactory.createMap(targetType.getType(), length);
-		MapEntryConverter converter = new MapEntryConverter(sourceElementType, sourceElementType, targetKeyType, targetValueType, keysCompatible, valuesCompatible, conversionService);		
-		for (int i = 0; i < length; i++) {
-			String property = (String) Array.get(source, i);
-			String[] fields = property.split("=");
-			if (fields.length < 2) {
-				throw new IllegalArgumentException("Invalid String property '" + property
-						+ "'; properties should be in the format name=value");
-			}
-			Object targetKey = converter.convertKey(fields[0]);
-			Object targetValue = converter.convertValue(fields[1]);
-			target.put(targetKey, targetValue);
-		}
-		return target;
-	}
-
-	private Map mapWithoutConversion(Object source, TypeDescriptor targetType) {
-		int length = Array.getLength(source);
-		Map target = CollectionFactory.createMap(targetType.getType(), length);
-		for (int i = 0; i < length; i++) {
-			String property = (String) Array.get(source, i);
-			String[] fields = property.split("=");
-			if (fields.length < 2) {
-				throw new IllegalArgumentException("Invalid String property '" + property
-						+ "'; properties should be in the format name=value");
-			}
-			String key = fields[0];
-			String value = fields[1];
-			target.put(key, value);
-		}
-		return target;
-	}
-
-}

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

@@ -1,53 +0,0 @@
-/*
- * 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.core.convert.support;
-
-import static org.springframework.core.convert.support.ConversionUtils.invokeConverter;
-
-import java.lang.reflect.Array;
-
-import org.springframework.core.convert.ConverterNotFoundException;
-import org.springframework.core.convert.TypeDescriptor;
-import org.springframework.util.StringUtils;
-
-final class StringToArrayGenericConverter implements GenericConverter {
-
-	private final GenericConversionService conversionService;
-
-	public StringToArrayGenericConverter(GenericConversionService conversionService) {
-		this.conversionService = conversionService;
-	}
-
-	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
-		String string = (String) source;
-		String[] fields = StringUtils.commaDelimitedListToStringArray(string);
-		TypeDescriptor targetElementType = targetType.getElementTypeDescriptor();
-		if (sourceType.isAssignableTo(targetElementType)) {
-			return fields;
-		} else {
-			Object target = Array.newInstance(targetElementType.getType(), fields.length);
-			GenericConverter converter = this.conversionService.getConverter(sourceType, targetElementType);
-			if (converter == null) {
-				throw new ConverterNotFoundException(sourceType, targetElementType);
-			}
-			for (int i = 0; i < fields.length; i++) {
-				Array.set(target, i, invokeConverter(converter, fields[i], sourceType, targetElementType));
-			}
-			return target;
-		}
-	}
-
-}

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

@@ -1,58 +0,0 @@
-/*
- * 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.core.convert.support;
-
-import static org.springframework.core.convert.support.ConversionUtils.invokeConverter;
-
-import java.util.Collection;
-
-import org.springframework.core.CollectionFactory;
-import org.springframework.core.convert.ConverterNotFoundException;
-import org.springframework.core.convert.TypeDescriptor;
-import org.springframework.util.StringUtils;
-
-final class StringToCollectionGenericConverter implements GenericConverter {
-
-	private final GenericConversionService conversionService;
-
-	public StringToCollectionGenericConverter(GenericConversionService conversionService) {
-		this.conversionService = conversionService;
-	}
-
-	public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
-		String string = (String) source;
-		String[] fields = StringUtils.commaDelimitedListToStringArray(string);
-		Collection target = CollectionFactory.createCollection(targetType.getType(), 1);
-		TypeDescriptor targetElementType = targetType.getElementTypeDescriptor();
-		if (targetElementType == TypeDescriptor.NULL || sourceType.isAssignableTo(targetElementType)) {
-			for (int i = 0; i < fields.length; i++) {
-				target.add(fields[i]);				
-			}
-		} else {
-			GenericConverter converter = this.conversionService.getConverter(sourceType, targetElementType);
-			if (converter == null) {
-				throw new ConverterNotFoundException(sourceType, targetElementType);
-			}
-			for (int i = 0; i < fields.length; i++) {
-				String sourceElement = fields[i];
-				Object targetElement = invokeConverter(converter, sourceElement, sourceType, targetElementType);
-				target.add(targetElement);				
-			}
-		}
-		return target;
-	}
-
-}

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

@@ -453,6 +453,48 @@ public class GenericConversionServiceTests {
 		assertEquals(FooEnum.BAZ, result.get(2));
 	}
 
+	@Test
+	public void convertMapToString() {
+		Map<String, String> foo = new LinkedHashMap<String, String>();
+		foo.put("1", "BAR");
+		foo.put("2", "BAZ");
+		String result = conversionService.convert(foo, String.class);
+		assertEquals("1=BAR 2=BAZ", result);
+	}
+
+	@Test
+	public void convertMapToStringWithConversion() throws Exception {
+		Map<Integer, FooEnum> foo = new LinkedHashMap<Integer, FooEnum>();
+		foo.put(1, FooEnum.BAR);
+		foo.put(2, FooEnum.BAZ);
+		conversionService.addConverter(new ObjectToStringConverter());
+		String result = (String) conversionService.convert(foo, new TypeDescriptor(getClass().getField("genericMap")),
+				TypeDescriptor.valueOf(String.class));
+		assertEquals("1=BAR 2=BAZ", result);
+	}
+
+	@Test
+	public void convertMapToObject() {
+		Map<Long, Long> foo = new LinkedHashMap<Long, Long>();
+		foo.put(1L, 1L);
+		foo.put(2L, 2L);
+		Long result = conversionService.convert(foo, Long.class);
+		assertEquals(new Long(1), result);
+	}
+
+	public Map<Long, Long> genericMap2 = new HashMap<Long, Long>();
+
+	@Test
+	public void convertMapToObjectWithConversion() throws Exception {
+		Map<Long, Long> foo = new LinkedHashMap<Long, Long>();
+		foo.put(1L, 1L);
+		foo.put(2L, 2L);
+		conversionService.addConverterFactory(new NumberToNumberConverterFactory());
+		Integer result = (Integer) conversionService.convert(foo,
+				new TypeDescriptor(getClass().getField("genericMap2")), TypeDescriptor.valueOf(Integer.class));
+		assertEquals(new Integer(1), result);
+	}
+
 	@Test
 	public void genericConverterDelegatingBackToConversionServiceConverterNotFound() {
 		try {