binding factory locator

git-svn-id: https://src.springframework.org/svn/spring-framework/trunk@1596 50f2f4bb-b051-0410-bef5-90022cba6387

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

@@ -19,7 +19,7 @@ import org.springframework.ui.alert.Alert;
 import org.springframework.ui.alert.Severity;
 
 /**
- * A binding between a source element and a model property.
+ * A binding between one or more UI components and a model property.
  * @author Keith Donald
  * @since 3.0
  */
@@ -138,12 +138,12 @@ public interface Binding {
 	Binding getNestedBinding(String property);
 
 	/**
-	 * If bound to an indexable Collection, either a {@link java.util.List} or an array.
+	 * If bound to an indexable collection, either a {@link java.util.List} or an array.
 	 */
 	boolean isList();
 
 	/**
-	 * If a List, get a Binding to a element in the List.
+	 * If a list, get a Binding to a element in the list..
 	 * @param index the element index
 	 * @return the indexed binding
 	 * @throws IllegalStateException if not a list
@@ -151,7 +151,7 @@ public interface Binding {
 	Binding getListElementBinding(int index);
 
 	/**
-	 * If bound to a {@link java.util.Map}.
+	 * If bound to a Map.
 	 */
 	boolean isMap();
 

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

@@ -0,0 +1,33 @@
+/*
+ * 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 locator for BindingFactories indexed by their models.
+ * Makes it easy for clients to lookup BindingFactories for models the need to bind to.
+ * @author Keith Donald
+ */
+public interface BindingFactoryLocator {
+	
+	/**
+	 * Get the BindingFactory for the model object.
+	 * If no such BindingFactory exists, one is created and cached.
+	 * Never returns <code>null</code>.
+	 * @param model the model object
+	 * @return the binding Factory
+	 */
+	public BindingFactory getBindingFactory(Object model);
+}

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

@@ -35,10 +35,13 @@ public interface BindingContext {
 
 	Binding getBinding(String property);
 
+	@SuppressWarnings("unchecked")
 	Formatter getFormatter();
 
+	@SuppressWarnings("unchecked")
 	Formatter getElementFormatter();
 
+	@SuppressWarnings("unchecked")
 	Formatter getKeyFormatter();
 
 	Binding getListElementBinding(int index);

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

@@ -92,6 +92,7 @@ public class GenericBinding implements Binding {
 		return bindingContext.getVisibleCondition().isTrue();
 	}
 
+	@SuppressWarnings("unchecked")
 	public void applySourceValue(Object sourceValue) {
 		assertEditable();
 		assertEnabled();
@@ -119,7 +120,6 @@ public class GenericBinding implements Binding {
 				Map map = new LinkedHashMap(sourceValues.length);
 				for (int i = 0; i < sourceValues.length; i++) {
 					String entryString = sourceValues[i];
-					Object parsedValue;
 					try {
 						String[] keyValue = entryString.split("=");
 						Object parsedMapKey = keyFormatter.parse(keyValue[0], getLocale());
@@ -327,6 +327,7 @@ public class GenericBinding implements Binding {
 
 	// internal helpers
 
+	@SuppressWarnings("unchecked")
 	private String format(Object value, Formatter formatter) {
 		Class<?> formattedType = getFormattedObjectType(formatter.getClass());
 		value = bindingContext.getTypeConverter().convert(value, formattedType);
@@ -337,6 +338,7 @@ public class GenericBinding implements Binding {
 		return LocaleContextHolder.getLocale();
 	}
 
+	@SuppressWarnings("unchecked")
 	private Class getFormattedObjectType(Class formatterClass) {
 		Class classToIntrospect = formatterClass;
 		while (classToIntrospect != null) {
@@ -365,6 +367,7 @@ public class GenericBinding implements Binding {
 		return null;
 	}
 
+	@SuppressWarnings("unchecked")
 	private Object coerseToValueType(Object parsed) {
 		TypeDescriptor targetType = valueModel.getValueTypeDescriptor();
 		TypeConverter converter = bindingContext.getTypeConverter();

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

@@ -25,7 +25,6 @@ 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;
@@ -446,7 +445,7 @@ public class GenericBindingFactory implements BindingFactory {
 		}
 
 		public Binding getBinding(String property) {
-			Object model = ((List) listBindingContext.binding.getValue()).get(index);
+			Object model = ((List<?>) listBindingContext.binding.getValue()).get(index);
 			Class<?> elementType = listBindingContext.getElementType();
 			if (elementType == null) {
 				elementType = model.getClass();
@@ -461,14 +460,17 @@ public class GenericBindingFactory implements BindingFactory {
 			return binding;
 		}
 
+		@SuppressWarnings("unchecked")
 		public Formatter getFormatter() {
 			return listBindingContext.getElementFormatter();
 		}
 
+		@SuppressWarnings("unchecked")
 		public Formatter getElementFormatter() {
 			return null;
 		}
 
+		@SuppressWarnings("unchecked")
 		public Formatter getKeyFormatter() {
 			return null;
 		}
@@ -520,6 +522,7 @@ public class GenericBindingFactory implements BindingFactory {
 			return mapBindingContext.getTypeConverter();
 		}
 
+		@SuppressWarnings("unchecked")
 		public Binding getBinding(String property) {
 			Object model = ((Map) mapBindingContext.binding.getValue()).get(key);
 			Class<?> elementType = mapBindingContext.getElementType();
@@ -536,14 +539,17 @@ public class GenericBindingFactory implements BindingFactory {
 			return binding;
 		}
 
+		@SuppressWarnings("unchecked")
 		public Formatter getFormatter() {
 			return mapBindingContext.getElementFormatter();
 		}
 
+		@SuppressWarnings("unchecked")
 		public Formatter getElementFormatter() {
 			return null;
 		}
 
+		@SuppressWarnings("unchecked")
 		public Formatter getKeyFormatter() {
 			return null;
 		}

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

@@ -0,0 +1,45 @@
+/*
+ * 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.IdentityHashMap;
+import java.util.Map;
+
+import org.springframework.ui.binding.BindingFactory;
+import org.springframework.ui.binding.BindingFactoryLocator;
+
+/**
+ * BindingFactoryLocator implementation that uses a {@link IdentityHashMap} to map models to BindingFactories.
+ * @author Keith Donald
+ */
+public class GenericBindingFactoryLocator implements BindingFactoryLocator {
+
+	private Map<Object, BindingFactory> bindingFactories = new IdentityHashMap<Object, BindingFactory>();
+	
+	public void put(BindingFactory bindingFactory) {
+		bindingFactories.put(bindingFactory.getModel(), bindingFactory);
+	}
+	
+	public BindingFactory getBindingFactory(Object model) {
+		BindingFactory factory = bindingFactories.get(model);
+		if (factory == null) {
+			factory = new GenericBindingFactory(model);
+			bindingFactories.put(model, factory);
+		}
+		return factory;
+	}
+
+}

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

@@ -21,12 +21,14 @@ import org.springframework.core.convert.TypeDescriptor;
 
 class ListElementValueModel implements ValueModel {
 
+	@SuppressWarnings("unchecked")
 	private List list;
 
 	private int index;
 
 	private Class<?> elementType;
 
+	@SuppressWarnings("unchecked")
 	public ListElementValueModel(int index, Class<?> elementType, List list) {
 		this.index = index;
 		this.elementType = elementType;
@@ -53,6 +55,7 @@ class ListElementValueModel implements ValueModel {
 		return true;
 	}
 
+	@SuppressWarnings("unchecked")
 	public void setValue(Object value) {
 		list.set(index, value);
 	}

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

@@ -25,8 +25,10 @@ public class MapValueValueModel implements ValueModel {
 
 	private Class<?> elementType;
 
+	@SuppressWarnings("unchecked")
 	private Map map;
 
+	@SuppressWarnings("unchecked")
 	public MapValueValueModel(Object key, Class<?> elementType, Map map, BindingContext bindingContext) {
 		this.key = key;
 		this.elementType = elementType;
@@ -53,6 +55,7 @@ public class MapValueValueModel implements ValueModel {
 		return true;
 	}
 	
+	@SuppressWarnings("unchecked")
 	public void setValue(Object value) {
 		map.put(key, value);
 	}

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

@@ -15,6 +15,7 @@
  */
 package org.springframework.ui.binding.support;
 
+@SuppressWarnings("serial")
 public class PropertyNotFoundException extends RuntimeException {
 
 	private String property;