data binding system polish; package improvements

org.springframework.context/src/main/java/org/springframework/ui/binding/BindingFactory.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2004-2009 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.ui.binding;
+
+/**
+ * A factory for model property bindings.
+ * @author Keith Donald
+ */
+public interface BindingFactory {
+
+	/**
+	 * The model object upon which bindings may be accessed.
+	 */
+	Object getModel();
+
+	/**
+	 * Get a binding to a model property.
+	 * @param property the property path
+	 * @throws NoSuchBindingException if no binding to the property exists
+	 */
+	Binding getBinding(String property);
+	
+}

org.springframework.context/src/main/java/org/springframework/ui/binding/NoSuchBindingException.java

@@ -1,19 +0,0 @@
-package org.springframework.ui.binding;
-
-/**
- * Thrown by a BindingFactory when no binding to a property exists.
- * @author Keith Donald
- * @since 3.0
- * @see BindingFactory#getBinding(String)
- */
-@SuppressWarnings("serial")
-public class NoSuchBindingException extends RuntimeException {
-	
-	/** 
-	 * Creates a new no such binding exception.
-	 * @param property the requested property for which there is no binding
-	 */
-	public NoSuchBindingException(String property) {
-		super("No binding to property '" + property + "' exists");
-	}
-}

org.springframework.context/src/main/java/org/springframework/ui/binding/binder/ArrayListBindingResults.java

@@ -1,14 +1,24 @@
-/**
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
+package org.springframework.ui.binding.binder;
 
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 
-import org.springframework.ui.binding.BindingResult;
-import org.springframework.ui.binding.BindingResults;
 
 class ArrayListBindingResults implements BindingResults {
 

org.springframework.context/src/main/java/org/springframework/ui/binding/binder/Binder.java

@@ -13,31 +13,25 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.ui.binding;
+package org.springframework.ui.binding.binder;
 
 import java.util.Map;
 
+import org.springframework.ui.binding.Binding;
+
 /**
  * Binds user-entered values to properties of a model object.
  * @author Keith Donald
  * @since 3.0
  * @see #bind(String)
- * @see #getBinding(String)
  * @see #bind(Map)
  */
 public interface Binder {
 	
 	/**
-	 * The model object for which property bindings may be accessed.
+	 * The model this binder binds to.
 	 */
-	Object getModel();
-
-	/**
-	 * Get a binding to a model property..
-	 * @param property the property path
-	 * @throws NoSuchBindingException if no binding to the property exists
-	 */
-	Binding getBinding(String property);
+	public Object getModel();
 	
 	/**
 	 * Bind the source values to the properties of the model.

org.springframework.context/src/main/java/org/springframework/ui/binding/binder/BindingResult.java

@@ -13,9 +13,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.ui.binding;
+package org.springframework.ui.binding.binder;
 
 import org.springframework.ui.alert.Alert;
+import org.springframework.ui.binding.Binding;
 
 /**
  * The result of a bind operation.

org.springframework.context/src/main/java/org/springframework/ui/binding/binder/BindingResults.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.ui.binding;
+package org.springframework.ui.binding.binder;
 
 import java.util.List;
 

org.springframework.context/src/main/java/org/springframework/ui/binding/binder/BindingStatusResult.java

@@ -1,11 +1,22 @@
-/**
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
+package org.springframework.ui.binding.binder;
 
 import org.springframework.ui.alert.Alert;
 import org.springframework.ui.alert.Severity;
-import org.springframework.ui.binding.BindingResult;
 
 class BindingStatusResult implements BindingResult {
 

org.springframework.context/src/main/java/org/springframework/ui/binding/binder/GenericBinder.java

@@ -0,0 +1,145 @@
+/*
+ * Copyright 2004-2009 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.ui.binding.binder;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import org.springframework.context.MessageSource;
+import org.springframework.core.convert.TypeConverter;
+import org.springframework.ui.binding.Binding;
+import org.springframework.ui.binding.BindingFactory;
+import org.springframework.ui.binding.Binding.BindingStatus;
+import org.springframework.ui.binding.support.PropertyNotFoundException;
+import org.springframework.util.Assert;
+
+/**
+ * A generic {@link Binder binder} suitable for use in most environments.
+ * @author Keith Donald
+ * @since 3.0
+ * @see #setMessageSource(MessageSource)
+ * @see #setTypeConverter(TypeConverter)
+ * @see #bind(Map)
+ */
+public class GenericBinder implements Binder {
+
+	private BindingFactory bindingFactory;
+	
+	private String[] requiredProperties;
+	
+	private MessageSource messageSource;
+
+	public GenericBinder(BindingFactory bindingFactory) {
+		Assert.notNull(bindingFactory, "The BindingFactory is required");
+		this.bindingFactory = bindingFactory;
+	}
+
+	/**
+	 * Configure the MessageSource that resolves localized {@link BindingResult} alert messages.
+	 * @param messageSource the message source
+	 */
+	public void setMessageSource(MessageSource messageSource) {
+		Assert.notNull(messageSource, "The MessageSource is required");
+		this.messageSource = messageSource;
+	}
+	
+	/**
+	 * Configure the properties for which source values must be present in each bind attempt.
+	 * @param propertyPaths the property path expressions
+	 * @see MissingSourceValuesException
+	 */
+	public void setRequired(String[] propertyPaths) {
+		this.requiredProperties = propertyPaths;
+	}
+	
+	public Object getModel() {
+		return bindingFactory.getModel();
+	}
+	
+	protected Binding getBinding(String property) {
+		return bindingFactory.getBinding(property);
+	}
+
+	// implementing Binder
+
+	public BindingResults bind(Map<String, ? extends Object> sourceValues) {
+		sourceValues = filter(sourceValues);
+		checkRequired(sourceValues);
+		ArrayListBindingResults results = new ArrayListBindingResults(sourceValues.size());
+		for (Map.Entry<String, ? extends Object> sourceValue : sourceValues.entrySet()) {
+			try {
+				Binding binding = getBinding(sourceValue.getKey());
+				results.add(bind(sourceValue, binding));
+			} catch (PropertyNotFoundException e) {
+				results.add(new PropertyNotFoundResult(sourceValue.getKey(), sourceValue.getValue(), messageSource));
+			}
+		}
+		return results;
+	}
+
+	// subclassing hooks
+
+	/**
+	 * Hook subclasses may use to filter the source values to bind.
+	 * This hook allows the binder to pre-process the source values before binding occurs.
+	 * For example, a Binder might insert empty or default values for fields that are not present.
+	 * As another example, a Binder might collapse multiple source values into a single source value. 
+	 * @param sourceValues the original source values map provided by the caller
+	 * @return the filtered source values map that will be used to bind
+	 */
+	protected Map<String, ? extends Object> filter(Map<String, ? extends Object> sourceValues) {
+		return sourceValues;
+	}
+
+	// internal helpers
+
+	private void checkRequired(Map<String, ? extends Object> sourceValues) {
+		if (requiredProperties == null) {
+			return;
+		}
+		List<String> missingRequired = new ArrayList<String>();
+		for (String required : requiredProperties) {
+			boolean found = false;
+			for (String property : sourceValues.keySet()) {
+				if (property.equals(required)) {
+					found = true;
+				}
+			}
+			if (!found) {
+				missingRequired.add(required);
+			}
+		}
+		if (!missingRequired.isEmpty()) {
+			throw new MissingSourceValuesException(missingRequired, sourceValues);
+		}
+	}
+
+	private BindingResult bind(Map.Entry<String, ? extends Object> sourceValue, Binding binding) {
+		String property = sourceValue.getKey();
+		Object value = sourceValue.getValue();
+		if (!binding.isEditable()) {
+			return new PropertyNotEditableResult(property, value, messageSource);
+		} else {
+			binding.applySourceValue(value);
+			if (binding.getStatus() == BindingStatus.DIRTY) {
+				binding.commit();
+			}
+			return new BindingStatusResult(property, value, binding.getStatusAlert());
+		}
+	}
+	
+}

org.springframework.context/src/main/java/org/springframework/ui/binding/binder/MissingSourceValuesException.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.ui.binding;
+package org.springframework.ui.binding.binder;
 
 import java.util.List;
 import java.util.Map;

org.springframework.context/src/main/java/org/springframework/ui/binding/binder/PropertyNotEditableResult.java

@@ -1,13 +1,24 @@
-/**
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
+package org.springframework.ui.binding.binder;
 
 import org.springframework.context.MessageSource;
 import org.springframework.core.style.StylerUtils;
 import org.springframework.ui.alert.Alert;
 import org.springframework.ui.alert.Severity;
-import org.springframework.ui.binding.BindingResult;
 import org.springframework.ui.message.MessageBuilder;
 import org.springframework.ui.message.ResolvableArgument;
 

org.springframework.context/src/main/java/org/springframework/ui/binding/binder/PropertyNotFoundResult.java

@@ -1,10 +1,24 @@
-package org.springframework.ui.binding.support;
+/*
+ * Copyright 2004-2009 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.ui.binding.binder;
 
 import org.springframework.context.MessageSource;
 import org.springframework.core.style.StylerUtils;
 import org.springframework.ui.alert.Alert;
 import org.springframework.ui.alert.Severity;
-import org.springframework.ui.binding.BindingResult;
 import org.springframework.ui.message.MessageBuilder;
 import org.springframework.ui.message.ResolvableArgument;
 

org.springframework.context/src/main/java/org/springframework/ui/binding/binder/WebBinder.java

@@ -13,11 +13,14 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.ui.binding.support;
+package org.springframework.ui.binding.binder;
 
 import java.util.LinkedHashMap;
 import java.util.Map;
 
+import org.springframework.ui.binding.Binding;
+import org.springframework.ui.binding.BindingFactory;
+
 /**
  * A binder designed for use in HTTP (web) environments.
  * Suited for binding user-provided HTTP query parameters to model properties.
@@ -36,8 +39,8 @@ public class WebBinder extends GenericBinder {
 	 * Creates a new web binder for the model object.
 	 * @param model the model object containing properties this binder will bind to
 	 */
-	public WebBinder(Object model) {
-		super(model);
+	public WebBinder(BindingFactory bindingFactory) {
+		super(bindingFactory);
 	}
 
 	/**
@@ -72,7 +75,7 @@ public class WebBinder extends GenericBinder {
 			} else if (field.startsWith(presentPrefix)) {
 				field = field.substring(presentPrefix.length());
 				if (!sourceValues.containsKey(field) && !sourceValues.containsKey(defaultPrefix + field)) {
-					value = getEmptyValue((PropertyBinding) getBinding(field));
+					value = getEmptyValue(getBinding(field));
 					filteredValues.put(field, value);
 				}
 			} else {
@@ -82,8 +85,8 @@ public class WebBinder extends GenericBinder {
 		return filteredValues;
 	}
 
-	protected Object getEmptyValue(PropertyBinding binding) {
-		Class<?> type = binding.getValueModel().getValueType();
+	protected Object getEmptyValue(Binding binding) {
+		Class<?> type = binding.getValueType();
 		if (boolean.class.equals(type) || Boolean.class.equals(type)) {
 			return Boolean.FALSE;
 		} else {

org.springframework.context/src/main/java/org/springframework/ui/binding/config/Condition.java

@@ -1,3 +1,18 @@
+/*
+ * Copyright 2004-2009 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.ui.binding.config;
 
 public interface Condition {

org.springframework.context/src/main/java/org/springframework/ui/binding/support/BindingContext.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
+
+import org.springframework.context.MessageSource;
+import org.springframework.core.convert.TypeConverter;
+import org.springframework.ui.binding.Binding;
+import org.springframework.ui.binding.config.Condition;
+import org.springframework.ui.format.Formatter;
+
+public interface BindingContext {
+
+	MessageSource getMessageSource();
+
+	TypeConverter getTypeConverter();
+
+	Condition getEditableCondition();
+
+	Condition getEnabledCondition();
+
+	Condition getVisibleCondition();
+
+	Binding getBinding(String property);
+
+	Formatter getFormatter();
+
+	Formatter getElementFormatter();
+
+	Formatter getKeyFormatter();
+
+	Binding getListElementBinding(int index);
+
+	Binding getMapValueBinding(Object key);
+
+	String getLabel();
+
+}

org.springframework.context/src/main/java/org/springframework/ui/binding/support/BindingRule.java

@@ -1,3 +1,18 @@
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
 
 import org.springframework.ui.binding.config.Condition;

org.springframework.context/src/main/java/org/springframework/ui/binding/support/CollectionTypeDescriptor.java

@@ -1,5 +1,17 @@
-/**
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
 

org.springframework.context/src/main/java/org/springframework/ui/binding/support/DefaultFormatter.java

@@ -1,54 +1,31 @@
-/**
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
 
-import java.lang.reflect.Array;
 import java.text.ParseException;
-import java.util.Collection;
-import java.util.Iterator;
 import java.util.Locale;
 
 import org.springframework.ui.format.Formatter;
 
 @SuppressWarnings("unchecked")
+// TODO should this delegate to type converter...
 class DefaultFormatter implements Formatter {
 
 	public static final Formatter INSTANCE = new DefaultFormatter();
 
-	public static final Formatter COLLECTION_FORMATTER = new Formatter() {
-		public String format(Object object, Locale locale) {
-			if (object == null) {
-				return "";
-			} else {
-				StringBuffer buffer = new StringBuffer();
-				if (object.getClass().isArray()) {
-					int length = Array.getLength(object);
-					for (int i = 0; i < length; i++) {
-						buffer.append(INSTANCE.format(Array.get(object, i), locale));
-						if (i < length - 1) {
-							buffer.append(",");
-						}
-					}
-				} else if (Collection.class.isAssignableFrom(object.getClass())) {
-					Collection c = (Collection) object;
-					for (Iterator it = c.iterator(); it.hasNext();) {
-						buffer.append(INSTANCE.format(it.next(), locale));
-						if (it.hasNext()) {
-							buffer.append(",");
-						}
-					}
-				}
-				return buffer.toString();
-			}
-		}
-
-		public Object parse(String formatted, Locale locale) throws ParseException {
-			throw new UnsupportedOperationException("Not yet implemented");
-		}
-		
-	};
-	
 	public String format(Object object, Locale locale) {
 		if (object == null) {
 			return "";

org.springframework.context/src/main/java/org/springframework/ui/binding/support/GenericBinding.java

@@ -1,11 +1,27 @@
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
 
-import java.lang.reflect.Array;
 import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
 import java.lang.reflect.TypeVariable;
 import java.text.ParseException;
+import java.util.ArrayList;
 import java.util.Collection;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
@@ -19,12 +35,13 @@ import org.springframework.core.style.StylerUtils;
 import org.springframework.ui.alert.Alert;
 import org.springframework.ui.alert.Severity;
 import org.springframework.ui.binding.Binding;
-import org.springframework.ui.binding.support.GenericBinder.BindingContext;
 import org.springframework.ui.format.Formatter;
 import org.springframework.ui.message.MessageBuilder;
 import org.springframework.ui.message.ResolvableArgument;
 
-public abstract class AbstractBinding implements Binding {
+public class GenericBinding implements Binding {
+
+	private ValueModel valueModel;
 	
 	private BindingContext bindingContext;
 
@@ -36,9 +53,10 @@ public abstract class AbstractBinding implements Binding {
 
 	private Exception invalidSourceValueCause;
 
-	public AbstractBinding(BindingContext bindingContext) {
+	public GenericBinding(ValueModel valueModel, BindingContext bindingContext) {
+		this.valueModel = valueModel;
 		this.bindingContext = bindingContext;
-		buffer = new ValueBuffer(getValueModel());
+		buffer = new ValueBuffer(valueModel);
 		status = BindingStatus.CLEAN;
 	}
 
@@ -52,16 +70,16 @@ public abstract class AbstractBinding implements Binding {
 		if (status == BindingStatus.DIRTY || status == BindingStatus.COMMIT_FAILURE) {
 			return buffer.getValue();
 		} else {
-			return getValueModel().getValue();
+			return valueModel.getValue();
 		}
 	}
 
 	public Class<?> getValueType() {
-		return getValueModel().getValueType();
+		return valueModel.getValueType();
 	}
 
 	public boolean isEditable() {
-		return bindingContext.getEditableCondition().isTrue();
+		return valueModel.isWriteable() && bindingContext.getEditableCondition().isTrue();
 	}
 
 	public boolean isEnabled() {
@@ -91,17 +109,20 @@ public abstract class AbstractBinding implements Binding {
 				status = BindingStatus.INVALID_SOURCE_VALUE;
 			}
 		} else if (sourceValue instanceof String[]) {
+			Object parsed;
+			if (isMap()) {
 				String[] sourceValues = (String[]) sourceValue;
-			Class<?> parsedType = getFormattedObjectType(bindingContext.getElementFormatter().getClass());
-			if (parsedType == null) {
-				parsedType = String.class;
-			}
-			Object parsed = Array.newInstance(parsedType, sourceValues.length);
+				Formatter keyFormatter = bindingContext.getKeyFormatter();
+				Formatter valueFormatter = bindingContext.getElementFormatter();
+				Map map = new LinkedHashMap(sourceValues.length);
 				for (int i = 0; i < sourceValues.length; i++) {
+					String entryString = sourceValues[i];
 					Object parsedValue;
 					try {
-					parsedValue = bindingContext.getElementFormatter().parse(sourceValues[i], getLocale());
-					Array.set(parsed, i, parsedValue);
+						String[] keyValue = entryString.split("=");
+						Object parsedMapKey = keyFormatter.parse(keyValue[0], getLocale());
+						Object parsedMapValue = valueFormatter.parse(keyValue[1], getLocale());
+						map.put(parsedMapKey, parsedMapValue);
 					} catch (ParseException e) {
 						this.sourceValue = sourceValue;
 						invalidSourceValueCause = e;
@@ -109,6 +130,24 @@ public abstract class AbstractBinding implements Binding {
 						break;
 					}
 				}
+				parsed = map;
+			} else {
+				String[] sourceValues = (String[]) sourceValue;
+				List list = new ArrayList(sourceValues.length);
+				for (int i = 0; i < sourceValues.length; i++) {
+					Object parsedValue;
+					try {
+						parsedValue = bindingContext.getElementFormatter().parse(sourceValues[i], getLocale());
+						list.add(parsedValue);
+					} catch (ParseException e) {
+						this.sourceValue = sourceValue;
+						invalidSourceValueCause = e;
+						status = BindingStatus.INVALID_SOURCE_VALUE;
+						break;
+					}
+				}
+				parsed = list;
+			}
 			if (status != BindingStatus.INVALID_SOURCE_VALUE) {
 				try {
 					buffer.setValue(coerseToValueType(parsed));
@@ -256,6 +295,13 @@ public abstract class AbstractBinding implements Binding {
 	}
 
 	public Binding getMapValueBinding(Object key) {
+		if (key instanceof String) {
+			try {
+				key = bindingContext.getKeyFormatter().parse((String) key, getLocale());
+			} catch (ParseException e) {
+				throw new IllegalArgumentException("Unable to parse map key '" + key + "'", e);
+			}
+		}
 		return bindingContext.getMapValueBinding(key);
 	}
 
@@ -263,31 +309,25 @@ public abstract class AbstractBinding implements Binding {
 	public String formatValue(Object value) {
 		Formatter formatter;
 		if (Collection.class.isAssignableFrom(getValueType()) || getValueType().isArray() || isMap()) {
-			formatter = getBindingContext().getElementFormatter();
+			formatter = bindingContext.getElementFormatter();
 		} else {
-			formatter = getBindingContext().getFormatter();
+			formatter = bindingContext.getFormatter();
 		}
 		return format(value, formatter);
 	}
 
-	// subclassing hooks
+	// internal helpers
 	
-	protected BindingContext getBindingContext() {
-		return bindingContext;
-	}
-
-	protected abstract ValueModel getValueModel();
-	
-	protected Locale getLocale() {
-		return LocaleContextHolder.getLocale();
-	}
-	
-	protected String format(Object value, Formatter formatter) {
+	private String format(Object value, Formatter formatter) {
 		Class<?> formattedType = getFormattedObjectType(formatter.getClass());
 		value = bindingContext.getTypeConverter().convert(value, formattedType);
 		return formatter.format(value, getLocale());
 	}
 
+	private Locale getLocale() {
+		return LocaleContextHolder.getLocale();
+	}
+
 	private Class getFormattedObjectType(Class formatterClass) {
 		Class classToIntrospect = formatterClass;
 		while (classToIntrospect != null) {
@@ -317,7 +357,7 @@ public abstract class AbstractBinding implements Binding {
 	}
 
 	private Object coerseToValueType(Object parsed) {
-		TypeDescriptor targetType = getValueModel().getValueTypeDescriptor();
+		TypeDescriptor targetType = valueModel.getValueTypeDescriptor();
 		TypeConverter converter = bindingContext.getTypeConverter();
 		if (parsed != null && converter.canConvert(parsed.getClass(), targetType)) {
 			return converter.convert(parsed, targetType);
@@ -338,39 +378,10 @@ public abstract class AbstractBinding implements Binding {
 		}
 	}
 
-	// internal helpers
-	
 	static abstract class AbstractAlert implements Alert {
 		public String toString() {
 			return getCode() + " - " + getMessage();
 		}
 	}
 
-	/**
-	 * For accessing the raw bound model object.
-	 * @author Keith Donald
-	 */
-	public interface ValueModel {
-		
-		/**
-		 * The model value.
-		 */
-		Object getValue();
-		
-		/**
-		 * The model value type.
-		 */
-		Class<?> getValueType();		
-
-		/**
-		 * The model value type descriptor.
-		 */
-		TypeDescriptor<?> getValueTypeDescriptor();		
-
-		/**
-		 * Set the model value.
-		 */
-		void setValue(Object value);
-	}
-
 }

org.springframework.context/src/main/java/org/springframework/ui/binding/support/GenericBindingFactory.java

@@ -21,19 +21,19 @@ import java.beans.Introspector;
 import java.beans.PropertyDescriptor;
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 
+import org.codehaus.groovy.binding.PropertyBinding;
 import org.springframework.context.MessageSource;
 import org.springframework.core.GenericCollectionTypeResolver;
 import org.springframework.core.convert.TypeConverter;
 import org.springframework.core.convert.support.DefaultTypeConverter;
-import org.springframework.ui.binding.Binder;
 import org.springframework.ui.binding.Binding;
-import org.springframework.ui.binding.BindingResult;
-import org.springframework.ui.binding.BindingResults;
-import org.springframework.ui.binding.MissingSourceValuesException;
-import org.springframework.ui.binding.Binding.BindingStatus;
+import org.springframework.ui.binding.BindingFactory;
+import org.springframework.ui.binding.binder.Binder;
+import org.springframework.ui.binding.binder.BindingResult;
 import org.springframework.ui.binding.config.BindingRuleConfiguration;
 import org.springframework.ui.binding.config.Condition;
 import org.springframework.ui.format.Formatter;
@@ -47,7 +47,7 @@ import org.springframework.util.Assert;
  * @see #setTypeConverter(TypeConverter)
  * @see #bind(Map)
  */
-public class GenericBinder implements Binder {
+public class GenericBindingFactory implements BindingFactory {
 
 	private Object model;
 
@@ -59,13 +59,11 @@ public class GenericBinder implements Binder {
 
 	private MessageSource messageSource;
 
-	private String[] requiredProperties = new String[0];
-
 	/**
 	 * Creates a new binder for the model object.
 	 * @param model the model object containing properties this binder will bind to
 	 */
-	public GenericBinder(Object model) {
+	public GenericBindingFactory(Object model) {
 		Assert.notNull(model, "The model to bind to is required");
 		this.model = model;
 		bindingRules = new HashMap<String, GenericBindingRule>();
@@ -104,9 +102,9 @@ public class GenericBinder implements Binder {
 	}
 
 	/**
-	 * 
+	 * Add a new binding rule for the property at the path specified.
 	 * @param propertyPath binding rule property path in format prop.nestedProp
-	 * @return
+	 * @return a builder for the binding rule
 	 */
 	public BindingRuleConfiguration bindingRule(String propertyPath) {
 		PropertyPath path = new PropertyPath(propertyPath);
@@ -142,55 +140,6 @@ public class GenericBinder implements Binder {
 		return binding;
 	}
 
-	public BindingResults bind(Map<String, ? extends Object> sourceValues) {
-		sourceValues = filter(sourceValues);
-		checkRequired(sourceValues);
-		ArrayListBindingResults results = new ArrayListBindingResults(sourceValues.size());
-		for (Map.Entry<String, ? extends Object> sourceValue : sourceValues.entrySet()) {
-			try {
-				Binding binding = getBinding(sourceValue.getKey());
-				results.add(bind(sourceValue, binding));
-			} catch (PropertyNotFoundException e) {
-				results.add(new PropertyNotFoundResult(sourceValue.getKey(), sourceValue.getValue(), messageSource));
-			}
-		}
-		return results;
-	}
-
-	// subclassing hooks
-
-	/**
-	 * Hook subclasses may use to filter the source values to bind.
-	 * This hook allows the binder to pre-process the source values before binding occurs.
-	 * For example, a Binder might insert empty or default values for fields that are not present.
-	 * As another example, a Binder might collapse multiple source values into a single source value. 
-	 * @param sourceValues the original source values map provided by the caller
-	 * @return the filtered source values map that will be used to bind
-	 */
-	protected Map<String, ? extends Object> filter(Map<String, ? extends Object> sourceValues) {
-		return sourceValues;
-	}
-
-	// internal helpers
-
-	private void checkRequired(Map<String, ? extends Object> sourceValues) {
-		List<String> missingRequired = new ArrayList<String>();
-		for (String required : requiredProperties) {
-			boolean found = false;
-			for (String property : sourceValues.keySet()) {
-				if (property.equals(required)) {
-					found = true;
-				}
-			}
-			if (!found) {
-				missingRequired.add(required);
-			}
-		}
-		if (!missingRequired.isEmpty()) {
-			throw new MissingSourceValuesException(missingRequired, sourceValues);
-		}
-	}
-
 	private GenericBindingRule getBindingRule(String property) {
 		GenericBindingRule rule = bindingRules.get(property);
 		if (rule == null) {
@@ -200,20 +149,6 @@ public class GenericBinder implements Binder {
 		return rule;
 	}
 
-	private BindingResult bind(Map.Entry<String, ? extends Object> sourceValue, Binding binding) {
-		String property = sourceValue.getKey();
-		Object value = sourceValue.getValue();
-		if (!binding.isEditable()) {
-			return new PropertyNotEditableResult(property, value, messageSource);
-		} else {
-			binding.applySourceValue(value);
-			if (binding.getStatus() == BindingStatus.DIRTY) {
-				binding.commit();
-			}
-			return new BindingStatusResult(property, value, binding.getStatusAlert());
-		}
-	}
-
 	@SuppressWarnings("unchecked")
 	class GenericBindingRule implements BindingRuleConfiguration, BindingContext {
 
@@ -223,10 +158,10 @@ public class GenericBinder implements Binder {
 
 		private Formatter formatter;
 
-		private Formatter elementFormatter;
-
 		private Formatter keyFormatter;
 
+		private Formatter elementFormatter;
+
 		private Condition editableCondition = Condition.ALWAYS_TRUE;
 
 		private Condition enabledCondition = Condition.ALWAYS_TRUE;
@@ -239,6 +174,8 @@ public class GenericBinder implements Binder {
 
 		private Map<Integer, Binding> listElementBindings;
 
+		private Map<Object, Binding> mapValueBindings;
+		
 		public GenericBindingRule(String property, Class modelClass) {
 			this.modelClass = modelClass;
 			this.property = findPropertyDescriptor(property);
@@ -262,14 +199,6 @@ public class GenericBinder implements Binder {
 			}
 		}
 
-		public Formatter<?> getElementFormatter() {
-			if (elementFormatter != null) {
-				return formatter;
-			} else {
-				return formatterRegistry.getFormatter(getElementType());
-			}
-		}
-
 		public Formatter<?> getKeyFormatter() {
 			if (keyFormatter != null) {
 				return keyFormatter;
@@ -278,6 +207,14 @@ public class GenericBinder implements Binder {
 			}
 		}
 
+		public Formatter<?> getElementFormatter() {
+			if (elementFormatter != null) {
+				return formatter;
+			} else {
+				return formatterRegistry.getFormatter(getElementType());
+			}
+		}
+
 		public Condition getEnabledCondition() {
 			return enabledCondition;
 		}
@@ -295,79 +232,34 @@ public class GenericBinder implements Binder {
 			return getBindingRule(property, binding.getValueType()).getBinding(binding.getValue());
 		}
 
-		public Binding getListElementBinding(final int index) {
+		public Binding getListElementBinding(int index) {
 			if (listElementBindings == null) {
 				listElementBindings = new HashMap<Integer, Binding>();
 			}
 			growListIfNecessary(index);
 			Binding binding = listElementBindings.get(index);
 			if (binding == null) {
-				final Map<String, Binding> nestedBindings = new HashMap<String, Binding>();
-				BindingContext listContext = new BindingContext() {
-					public MessageSource getMessageSource() {
-						return GenericBindingRule.this.getMessageSource();
-					}
-
-					public TypeConverter getTypeConverter() {
-						return GenericBindingRule.this.getTypeConverter();
-					}
-
-					public Binding getBinding(String property) {
-						GenericBindingRule rule = GenericBindingRule.this.getBindingRule(property, getElementType());
-						Object model = ((List) GenericBindingRule.this.binding.getValue()).get(index);
-						Binding binding = nestedBindings.get(property);
-						if (binding == null) {
-							binding = new PropertyBinding(rule.property, model, rule);
-							nestedBindings.put(property, binding);
-						}
-						return binding;
-					}
-
-					public Formatter getFormatter() {
-						return GenericBindingRule.this.getElementFormatter();
-					}
-
-					public Formatter getElementFormatter() {
-						return null;
-					}
-
-					public Formatter getKeyFormatter() {
-						return null;
-					}
-
-					public Condition getEditableCondition() {
-						return GenericBindingRule.this.getEditableCondition();
-					}
-
-					public Condition getEnabledCondition() {
-						return GenericBindingRule.this.getEnabledCondition();
-					}
-
-					public Condition getVisibleCondition() {
-						return GenericBindingRule.this.getVisibleCondition();
-					}
-
-					public Binding getListElementBinding(int index) {
-						throw new IllegalArgumentException("Not yet supported");
-					}
-
-					public Binding getMapValueBinding(Object key) {
-						throw new IllegalArgumentException("Not yet supported");
-					}
-
-					public String getLabel() {
-						return GenericBindingRule.this.getLabel() + "[" + index + "]";
-					}
-
-				};
-				binding = new ListElementBinding(index, getElementType(), (List) this.binding.getValue(), listContext);
+				BindingContext bindingContext = new ListElementBindingContext(index, this);
+				ValueModel valueModel = new ListElementValueModel(index, getElementType(), (List) this.binding.getValue());
+				binding = new GenericBinding(valueModel, bindingContext);
 				listElementBindings.put(index, binding);
 			}
 			return binding;
 		}
 
 		public Binding getMapValueBinding(Object key) {
-			return null;
+			if (mapValueBindings == null) {
+				mapValueBindings = new HashMap<Object, Binding>();
+			}
+			createMapValueIfNecessary();
+			Binding binding = mapValueBindings.get(key);
+			if (binding == null) {
+				BindingContext bindingContext = new MapValueBindingContext(key, this);
+				ValueModel valueModel = new MapValueValueModel(key, getElementType(), (Map) this.binding.getValue(), bindingContext);
+				binding = new GenericBinding(valueModel, bindingContext);
+				mapValueBindings.put(key, binding);
+			}
+			return binding;
 		}
 
 		public String getLabel() {
@@ -416,8 +308,12 @@ public class GenericBinder implements Binder {
 		// internal helpers
 
 		private Class<?> getElementType() {
+			if (Map.class.isAssignableFrom(property.getPropertyType())) {
+				return GenericCollectionTypeResolver.getMapValueReturnType(property.getReadMethod());				
+			} else {
 				return GenericCollectionTypeResolver.getCollectionReturnType(property.getReadMethod());				
 			}
+		}
 
 		private Class<?> getKeyType() {
 			return GenericCollectionTypeResolver.getMapKeyReturnType(property.getReadMethod());
@@ -443,7 +339,8 @@ public class GenericBinder implements Binder {
 
 		Binding getBinding(Object model) {
 			if (binding == null) {
-				binding = new PropertyBinding(property, model, this);
+				PropertyValueModel valueModel = new PropertyValueModel(property, model);
+				binding = new GenericBinding(valueModel, this);
 			}
 			return binding;
 		}
@@ -475,6 +372,15 @@ public class GenericBinder implements Binder {
 			}
 		}
 
+		private void createMapValueIfNecessary() {
+			Object value = binding.getValue();
+			if (value == null) {
+				value = newMapValue(binding.getValueType());
+				binding.applySourceValue(value);
+				binding.commit();
+			}			
+		}
+		
 		private void growListIfNecessary(int index) {
 			List list = (List) binding.getValue();
 			if (list == null) {
@@ -490,6 +396,14 @@ public class GenericBinder implements Binder {
 			}
 		}
 
+		private Map newMapValue(Class<?> type) {
+			if (type.isInterface()) {
+				return (Map) newValue(LinkedHashMap.class);
+			} else {
+				return (Map) newValue(type);
+			}
+		}
+
 		private List newListValue(Class<?> type) {
 			if (type.isInterface()) {
 				return (List) newValue(ArrayList.class);
@@ -510,36 +424,153 @@ public class GenericBinder implements Binder {
 
 	}
 
-	public interface BindingContext {
+	private static class ListElementBindingContext implements BindingContext {
 		
-		MessageSource getMessageSource();
+		private int index;
 
-		TypeConverter getTypeConverter();
+		private GenericBindingRule listBindingContext;
 		
-		Condition getEditableCondition();
-
-		Condition getEnabledCondition();
-
-		Condition getVisibleCondition();
-
-		Binding getBinding(String property);
-
-		Formatter getFormatter();
-
-		Formatter getElementFormatter();
-
-		Formatter getKeyFormatter();
-
-		Binding getListElementBinding(int index);
-
-		Binding getMapValueBinding(Object key);
-
-		String getLabel();
+		final Map<String, Binding> nestedBindings = new HashMap<String, Binding>();
 		
+		public ListElementBindingContext(int index, GenericBindingRule listBindingContext) {
+			this.index = index;
+			this.listBindingContext = listBindingContext;
 		}
 		
-	public void setRequired(String[] propertyPaths) {
-		this.requiredProperties = propertyPaths;
+		public MessageSource getMessageSource() {
+			return listBindingContext.getMessageSource();
 		}
 
+		public TypeConverter getTypeConverter() {
+			return listBindingContext.getTypeConverter();
+		}
+
+		public Binding getBinding(String property) {
+			Object model = ((List) listBindingContext.binding.getValue()).get(index);
+			Class<?> elementType = listBindingContext.getElementType();
+			if (elementType == null) {
+				elementType = model.getClass();
+			}
+			GenericBindingRule rule = listBindingContext.getBindingRule(property, elementType);
+			Binding binding = nestedBindings.get(property);
+			if (binding == null) {
+				PropertyValueModel valueModel = new PropertyValueModel(rule.property, model);
+				binding = new GenericBinding(valueModel, rule);
+				nestedBindings.put(property, binding);
+			}
+			return binding;
+		}
+
+		public Formatter getFormatter() {
+			return listBindingContext.getElementFormatter();
+		}
+
+		public Formatter getElementFormatter() {
+			return null;
+		}
+
+		public Formatter getKeyFormatter() {
+			return null;
+		}
+
+		public Condition getEditableCondition() {
+			return listBindingContext.getEditableCondition();
+		}
+
+		public Condition getEnabledCondition() {
+			return listBindingContext.getEnabledCondition();
+		}
+
+		public Condition getVisibleCondition() {
+			return listBindingContext.getVisibleCondition();
+		}
+
+		public Binding getListElementBinding(int index) {
+			throw new IllegalArgumentException("Not yet supported");
+		}
+
+		public Binding getMapValueBinding(Object key) {
+			throw new IllegalArgumentException("Not yet supported");
+		}
+
+		public String getLabel() {
+			return listBindingContext.getLabel() + "[" + index + "]";
+		}
+
+	};
+	
+	private static class MapValueBindingContext implements BindingContext {
+		
+		private Object key;
+
+		private GenericBindingRule mapBindingContext;
+		
+		final Map<String, Binding> nestedBindings = new HashMap<String, Binding>();
+		
+		public MapValueBindingContext(Object key, GenericBindingRule mapBindingContext) {
+			this.key = key;
+			this.mapBindingContext = mapBindingContext;
+		}
+		
+		public MessageSource getMessageSource() {
+			return mapBindingContext.getMessageSource();
+		}
+
+		public TypeConverter getTypeConverter() {
+			return mapBindingContext.getTypeConverter();
+		}
+
+		public Binding getBinding(String property) {
+			Object model = ((Map) mapBindingContext.binding.getValue()).get(key);
+			Class<?> elementType = mapBindingContext.getElementType();
+			if (elementType == null) {
+				elementType = model.getClass();
+			}
+			GenericBindingRule rule = mapBindingContext.getBindingRule(property, elementType);
+			Binding binding = nestedBindings.get(property);
+			if (binding == null) {
+				PropertyValueModel valueModel = new PropertyValueModel(rule.property, model);
+				binding = new GenericBinding(valueModel, rule);
+				nestedBindings.put(property, binding);
+			}
+			return binding;
+		}
+
+		public Formatter getFormatter() {
+			return mapBindingContext.getElementFormatter();
+		}
+
+		public Formatter getElementFormatter() {
+			return null;
+		}
+
+		public Formatter getKeyFormatter() {
+			return null;
+		}
+
+		public Condition getEditableCondition() {
+			return mapBindingContext.getEditableCondition();
+		}
+
+		public Condition getEnabledCondition() {
+			return mapBindingContext.getEnabledCondition();
+		}
+
+		public Condition getVisibleCondition() {
+			return mapBindingContext.getVisibleCondition();
+		}
+
+		public Binding getListElementBinding(int index) {
+			throw new IllegalArgumentException("Not yet supported");
+		}
+
+		public Binding getMapValueBinding(Object key) {
+			throw new IllegalArgumentException("Not yet supported");
+		}
+
+		public String getLabel() {
+			return mapBindingContext.getLabel() + "[" + key + "]";
+		}
+
+	};
 }

org.springframework.context/src/main/java/org/springframework/ui/binding/support/GenericFormatterRegistry.java

@@ -17,20 +17,31 @@ package org.springframework.ui.binding.support;
 
 import java.beans.PropertyDescriptor;
 import java.lang.annotation.Annotation;
+import java.lang.reflect.Array;
 import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
 import java.lang.reflect.TypeVariable;
+import java.text.ParseException;
+import java.util.Collection;
 import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Locale;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
 import org.springframework.core.GenericTypeResolver;
 import org.springframework.core.MethodParameter;
 import org.springframework.core.annotation.AnnotationUtils;
+import org.springframework.core.convert.ConversionFailedException;
+import org.springframework.core.convert.TypeConverter;
 import org.springframework.core.convert.TypeDescriptor;
+import org.springframework.core.convert.support.ConversionUtils;
+import org.springframework.core.convert.support.DefaultTypeConverter;
 import org.springframework.ui.format.AnnotationFormatterFactory;
 import org.springframework.ui.format.Formatted;
 import org.springframework.ui.format.Formatter;
+import org.springframework.util.Assert;
+import org.springframework.util.StringUtils;
 
 /**
  * A generic implementation of {@link FormatterRegistry} suitable for use in most binding environments.
@@ -48,7 +59,14 @@ public class GenericFormatterRegistry implements FormatterRegistry {
 
 	private Map<Class, AnnotationFormatterFactory> annotationFormatters = new HashMap<Class, AnnotationFormatterFactory>();
 
+	private TypeConverter typeConverter = new DefaultTypeConverter();
+	
+	public void setTypeConverter(TypeConverter typeConverter) {
+		this.typeConverter = typeConverter;
+	}
+	
 	public Formatter<?> getFormatter(PropertyDescriptor property) {
+		Assert.notNull(property, "The PropertyDescriptor is required");
 		TypeDescriptor<?> propertyType = new TypeDescriptor(new MethodParameter(property.getReadMethod(), -1));
 		Annotation[] annotations = propertyType.getAnnotations();
 		for (Annotation a : annotations) {
@@ -60,11 +78,13 @@ public class GenericFormatterRegistry implements FormatterRegistry {
 		Formatter<?> formatter = null;
 		Class<?> type;
 		if (propertyType.isCollection() || propertyType.isArray()) {
-			formatter = collectionTypeFormatters.get(new GenericCollectionPropertyType(propertyType.getType(), propertyType.getElementType()));
+			GenericCollectionPropertyType collectionType = new GenericCollectionPropertyType(propertyType.getType(),
+					propertyType.getElementType());
+			formatter = collectionTypeFormatters.get(collectionType);
 			if (formatter != null) {
 				return formatter;
 			} else {
-				return DefaultFormatter.COLLECTION_FORMATTER;
+				return new DefaultCollectionFormatter(collectionType, this);
 			}
 		} else {
 			type = propertyType.getType();
@@ -73,6 +93,7 @@ public class GenericFormatterRegistry implements FormatterRegistry {
 	}
 
 	public Formatter<?> getFormatter(Class<?> type) {
+		Assert.notNull(type, "The Class of the object to format is required");
 		Formatter formatter = typeFormatters.get(type);
 		if (formatter != null) {
 			return formatter;
@@ -83,20 +104,20 @@ public class GenericFormatterRegistry implements FormatterRegistry {
 				try {
 					formatter = (Formatter) formatterClass.newInstance();
 				} catch (InstantiationException e) {
-					// TODO better runtime exception
-					throw new IllegalStateException(e);
+					throw new IllegalStateException(
+							"Formatter referenced by @Formatted annotation does not have default constructor", e);
 				} catch (IllegalAccessException e) {
-					throw new IllegalStateException(e);
+					throw new IllegalStateException(
+							"Formatter referenced by @Formatted annotation does not have public constructor", e);
 				}
 				typeFormatters.put(type, formatter);
 				return formatter;
 			} else {
-				return DefaultFormatter.INSTANCE;
+				return new DefaultFormatter(type, typeConverter);
 			}
 		}
 	}
 
-
 	public void add(Class<?> propertyType, Formatter<?> formatter) {
 		if (propertyType.isAnnotation()) {
 			annotationFormatters.put(propertyType, new SimpleAnnotationFormatterFactory(formatter));
@@ -159,4 +180,124 @@ public class GenericFormatterRegistry implements FormatterRegistry {
 
 	}
 
+	private static class DefaultFormatter implements Formatter {
+
+		public static final Formatter DEFAULT_INSTANCE = new DefaultFormatter(null, null);
+		
+		private Class<?> objectType;
+		
+		private TypeConverter typeConverter;
+		
+		public DefaultFormatter(Class<?> objectType, TypeConverter typeConverter) {
+			this.objectType = objectType;
+			this.typeConverter = typeConverter;
+		}
+		
+		public String format(Object object, Locale locale) {
+			if (object == null) {
+				return "";
+			} else {
+				if (typeConverter != null && typeConverter.canConvert(object.getClass(), String.class)) {
+					return typeConverter.convert(object, String.class);
+				} else {
+					return object.toString();
+				}
+			}
+		}
+
+		public Object parse(String formatted, Locale locale) throws ParseException {
+			if (formatted == "") {
+				return null;
+			} else {
+				if (typeConverter != null && typeConverter.canConvert(String.class, objectType)) {
+					try {
+						return typeConverter.convert(formatted, objectType);
+					} catch (ConversionFailedException e) {
+						throw new ParseException(formatted, -1);
+					}
+				} else {
+					return formatted;
+				}
+			}
+		}
+	}
+	
+	private static class DefaultCollectionFormatter implements Formatter {
+
+		private GenericCollectionPropertyType collectionType;
+
+		private Formatter elementFormatter;
+
+		public DefaultCollectionFormatter(GenericCollectionPropertyType collectionType,
+				GenericFormatterRegistry formatterRegistry) {
+			this.collectionType = collectionType;
+			this.elementFormatter = collectionType.getElementType() != null ? formatterRegistry
+					.getFormatter(collectionType.getElementType()) : DefaultFormatter.DEFAULT_INSTANCE;
+		}
+
+		public String format(Object object, Locale locale) {
+			if (object == null) {
+				return "";
+			} else {
+				StringBuffer buffer = new StringBuffer();
+				if (object.getClass().isArray()) {
+					int length = Array.getLength(object);
+					for (int i = 0; i < length; i++) {
+						buffer.append(elementFormatter.format(Array.get(object, i), locale));
+						if (i < length - 1) {
+							buffer.append(",");
+						}
+					}
+				} else if (Collection.class.isAssignableFrom(object.getClass())) {
+					Collection c = (Collection) object;
+					for (Iterator it = c.iterator(); it.hasNext();) {
+						buffer.append(elementFormatter.format(it.next(), locale));
+						if (it.hasNext()) {
+							buffer.append(",");
+						}
+					}
+				}
+				return buffer.toString();
+			}
+		}
+
+		public Object parse(String formatted, Locale locale) throws ParseException {
+			String[] fields = StringUtils.commaDelimitedListToStringArray(formatted);
+			if (collectionType.getCollectionType().isArray()) {
+				Object array = Array.newInstance(getElementType(), fields.length);
+				for (int i = 0; i < fields.length; i++) {
+					Array.set(array, i, elementFormatter.parse(fields[i], locale));
+				}
+				return array;
+			} else {
+				Collection collection = newCollection();
+				for (int i = 0; i < fields.length; i++) {
+					collection.add(elementFormatter.parse(fields[i], locale));
+				}
+				return collection;
+			}
+		}
+
+		private Class<?> getElementType() {
+			if (collectionType.getElementType() != null) {
+				return collectionType.getElementType();
+			} else {
+				return String.class;
+			}
+		}
+
+		private Collection newCollection() {
+			try {
+				Class<? extends Collection> implType = ConversionUtils
+						.getCollectionImpl((Class<? extends Collection>) collectionType.getCollectionType());
+				return (Collection) implType.newInstance();
+			} catch (InstantiationException e) {
+				throw new IllegalStateException("Should not happen", e);
+			} catch (IllegalAccessException e) {
+				throw new IllegalStateException("Should not happen", e);
+			}
+
+		}
+	};
+
 }

org.springframework.context/src/main/java/org/springframework/ui/binding/support/ListElementBinding.java

@@ -1,51 +0,0 @@
-package org.springframework.ui.binding.support;
-
-import java.util.List;
-
-import org.springframework.core.convert.TypeDescriptor;
-import org.springframework.ui.binding.support.GenericBinder.BindingContext;
-
-public class ListElementBinding extends AbstractBinding {
-	
-	private List list;
-	
-	private int index;
-
-	private Class<?> elementType;
-	
-	private BindingContext bindingContext;
-	
-	public ListElementBinding(int index, Class<?> elementType, List list, BindingContext bindingContext) {
-		super(bindingContext);
-		this.index = index;
-		this.elementType = elementType;
-		this.list = list;
-		this.bindingContext = bindingContext;
-	}
-	
-	@Override
-	protected ValueModel getValueModel() {
-		return new ValueModel() {
-			public Object getValue() {
-				return list.get(index);
-			}
-
-			public Class<?> getValueType() {
-				if (elementType != null) {
-					return elementType;
-				} else {
-					return getValue().getClass();
-				}
-			}
-
-			public TypeDescriptor<?> getValueTypeDescriptor() {
-				return TypeDescriptor.valueOf(getValueType());
-			}
-
-			public void setValue(Object value) {
-				list.set(index, value);
-			}
-		};
-	}
-
-}

org.springframework.context/src/main/java/org/springframework/ui/binding/support/ListElementValueModel.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
+
+import java.util.List;
+
+import org.springframework.core.convert.TypeDescriptor;
+
+class ListElementValueModel implements ValueModel {
+
+	private List list;
+
+	private int index;
+
+	private Class<?> elementType;
+
+	public ListElementValueModel(int index, Class<?> elementType, List list) {
+		this.index = index;
+		this.elementType = elementType;
+		this.list = list;			
+	}
+	
+	public Object getValue() {
+		return list.get(index);
+	}
+
+	public Class<?> getValueType() {
+		if (elementType != null) {
+			return elementType;
+		} else {
+			return getValue().getClass();
+		}
+	}
+
+	public TypeDescriptor<?> getValueTypeDescriptor() {
+		return TypeDescriptor.valueOf(getValueType());
+	}
+
+	public boolean isWriteable() {
+		return true;
+	}
+
+	public void setValue(Object value) {
+		list.set(index, value);
+	}
+}

org.springframework.context/src/main/java/org/springframework/ui/binding/support/MapValueValueModel.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
+
+import java.util.Map;
+
+import org.springframework.core.convert.TypeDescriptor;
+
+public class MapValueValueModel implements ValueModel {
+
+	private Object key;
+
+	private Class<?> elementType;
+
+	private Map map;
+
+	public MapValueValueModel(Object key, Class<?> elementType, Map map, BindingContext bindingContext) {
+		this.key = key;
+		this.elementType = elementType;
+		this.map = map;			
+	}
+
+	public Object getValue() {
+		return map.get(key);
+	}
+
+	public Class<?> getValueType() {
+		if (elementType != null) {
+			return elementType;
+		} else {
+			return getValue().getClass();
+		}
+	}
+
+	public TypeDescriptor<?> getValueTypeDescriptor() {
+		return TypeDescriptor.valueOf(getValueType());
+	}
+
+	public boolean isWriteable() {
+		return true;
+	}
+	
+	public void setValue(Object value) {
+		map.put(key, value);
+	}
+}

org.springframework.context/src/main/java/org/springframework/ui/binding/support/PropertyBinding.java

@@ -1,58 +0,0 @@
-package org.springframework.ui.binding.support;
-
-import java.beans.PropertyDescriptor;
-
-import org.springframework.core.MethodParameter;
-import org.springframework.core.convert.TypeDescriptor;
-import org.springframework.ui.binding.Binding;
-import org.springframework.ui.binding.support.GenericBinder.BindingContext;
-import org.springframework.util.ReflectionUtils;
-
-public class PropertyBinding extends AbstractBinding implements Binding {
-
-	private PropertyDescriptor property;
-
-	private Object object;
-
-	public PropertyBinding(PropertyDescriptor property, Object object, BindingContext bindingContext) {
-		super(bindingContext);
-		this.property = property;
-		this.object = object;
-	}
-
-	// Binding overrides
-	
-	@Override
-	public boolean isEditable() {
-		return isWriteable() && super.isEditable();
-	}
-
-	// implementing
-	
-	protected ValueModel getValueModel() {
-		return new ValueModel() {
-			public Object getValue() {
-				return ReflectionUtils.invokeMethod(property.getReadMethod(), object);
-			}
-
-			public Class<?> getValueType() {
-				return property.getPropertyType();
-			}
-
-			@SuppressWarnings("unchecked")
-			public TypeDescriptor<?> getValueTypeDescriptor() {
-				return new TypeDescriptor(new MethodParameter(property.getReadMethod(), -1));
-			}
-
-			public void setValue(Object value) {
-				ReflectionUtils.invokeMethod(property.getWriteMethod(), object, value);
-			}
-		};
-	}
-	
-	// internal helpers
-	
-	private boolean isWriteable() {
-		return property.getWriteMethod() != null;
-	}
-}

org.springframework.context/src/main/java/org/springframework/ui/binding/support/PropertyNotFoundException.java

@@ -1,3 +1,18 @@
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
 
 public class PropertyNotFoundException extends RuntimeException {

org.springframework.context/src/main/java/org/springframework/ui/binding/support/PropertyPath.java

@@ -1,5 +1,17 @@
-/**
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
 

org.springframework.context/src/main/java/org/springframework/ui/binding/support/PropertyPathElement.java

@@ -1,5 +1,17 @@
-/**
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
 

org.springframework.context/src/main/java/org/springframework/ui/binding/support/PropertyValueModel.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
+
+import java.beans.PropertyDescriptor;
+
+import org.springframework.core.MethodParameter;
+import org.springframework.core.convert.TypeDescriptor;
+import org.springframework.util.ReflectionUtils;
+
+public class PropertyValueModel implements ValueModel {
+
+	private PropertyDescriptor property;
+
+	private Object object;
+
+	public PropertyValueModel(PropertyDescriptor property, Object object) {
+		this.property = property;
+		this.object = object;
+	}
+	
+	public Object getValue() {
+		return ReflectionUtils.invokeMethod(property.getReadMethod(), object);
+	}
+
+	public Class<?> getValueType() {
+		return property.getPropertyType();
+	}
+
+	@SuppressWarnings("unchecked")
+	public TypeDescriptor<?> getValueTypeDescriptor() {
+		return new TypeDescriptor(new MethodParameter(property.getReadMethod(), -1));
+	}
+
+	public boolean isWriteable() {
+		return property.getWriteMethod() != null;
+	}
+	
+	public void setValue(Object value) {
+		ReflectionUtils.invokeMethod(property.getWriteMethod(), object, value);
+	}
+
+}

org.springframework.context/src/main/java/org/springframework/ui/binding/support/ValueBuffer.java

@@ -1,9 +1,20 @@
-/**
+/*
+ * Copyright 2004-2009 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.ui.binding.support;
 
-import org.springframework.ui.binding.support.AbstractBinding.ValueModel;
 
 class ValueBuffer {
 

org.springframework.context/src/main/java/org/springframework/ui/binding/support/ValueModel.java

@@ -0,0 +1,36 @@
+package org.springframework.ui.binding.support;
+
+import org.springframework.core.convert.TypeDescriptor;
+
+/**
+ * For accessing the raw bound model object.
+ * @author Keith Donald
+ */
+public interface ValueModel {
+
+	/**
+	 * The model value.
+	 */
+	Object getValue();
+
+	/**
+	 * The model value type.
+	 */
+	Class<?> getValueType();
+
+	/**
+	 * The model value type descriptor.
+	 */
+	TypeDescriptor<?> getValueTypeDescriptor();
+
+	/**
+	 * If the model is writeable.
+	 */
+	boolean isWriteable();
+	
+	/**
+	 * Set the model value.
+	 * @throws IllegalStateException if not writeable
+	 */
+	void setValue(Object value);
+}

org.springframework.context/src/main/java/org/springframework/ui/lifecycle/BindAndValidateLifecycleImpl.java

@@ -20,9 +20,9 @@ import java.util.List;
 import java.util.Map;
 
 import org.springframework.ui.alert.AlertContext;
-import org.springframework.ui.binding.Binder;
-import org.springframework.ui.binding.BindingResult;
-import org.springframework.ui.binding.BindingResults;
+import org.springframework.ui.binding.binder.Binder;
+import org.springframework.ui.binding.binder.BindingResult;
+import org.springframework.ui.binding.binder.BindingResults;
 import org.springframework.ui.validation.ValidationFailure;
 import org.springframework.ui.validation.Validator;
 

org.springframework.context/src/main/java/org/springframework/ui/lifecycle/ValidationDecider.java

@@ -15,7 +15,7 @@
  */
 package org.springframework.ui.lifecycle;
 
-import org.springframework.ui.binding.BindingResults;
+import org.springframework.ui.binding.binder.BindingResults;
 
 /**
  * Decides if validation should run for an execution of the bind and validate lifecycle.