property not found / required

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

@@ -19,18 +19,20 @@ import java.beans.BeanInfo;
 import java.beans.IntrospectionException;
 import java.beans.Introspector;
 import java.beans.PropertyDescriptor;
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 import org.springframework.context.MessageSource;
 import org.springframework.core.GenericCollectionTypeResolver;
 import org.springframework.core.convert.TypeConverter;
-import org.springframework.core.convert.TypeDescriptor;
 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.config.BindingRuleConfiguration;
 import org.springframework.ui.binding.config.Condition;
@@ -57,6 +59,8 @@ 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
@@ -140,10 +144,15 @@ public class GenericBinder implements 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()) {
-			Binding binding = getBinding(sourceValue.getKey());
-			results.add(bind(sourceValue, binding));
+			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;
 	}
@@ -163,6 +172,24 @@ public class GenericBinder implements Binder {
 	}
 
 	// 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);
@@ -217,6 +244,10 @@ public class GenericBinder implements Binder {
 		
 		// implementing BindingContext
 
+		public MessageSource getMessageSource() {
+			return messageSource;
+		}
+		
 		public TypeConverter getTypeConverter() {
 			return typeConverter;
 		}	
@@ -326,8 +357,7 @@ public class GenericBinder implements Binder {
 					return propDesc;
 				}
 			}
-			throw new IllegalArgumentException("No property '" + property + "' found on model ["
-					+ modelClass.getName() + "]");
+			throw new PropertyNotFoundException(property, modelClass);
 		}
 
 		private BeanInfo getBeanInfo(Class<?> clazz) {
@@ -341,6 +371,8 @@ public class GenericBinder implements Binder {
 	
 	public interface BindingContext {
 		
+		MessageSource getMessageSource();
+		
 		TypeConverter getTypeConverter();
 
 		Condition getEditableCondition();
@@ -362,4 +394,8 @@ public class GenericBinder implements Binder {
 
 	}
 
+	public void setRequired(String[] propertyPaths) {
+		this.requiredProperties = propertyPaths;
+	}
+
 }

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

@@ -0,0 +1,23 @@
+package org.springframework.ui.binding.support;
+
+public class PropertyNotFoundException extends RuntimeException {
+
+	private String property;
+
+	private Class<?> modelClass;
+
+	public PropertyNotFoundException(String property, Class<?> modelClass) {
+		super("No property '" + property + "' found on model [" + modelClass.getName() + "]");
+		this.property = property;
+		this.modelClass = modelClass;
+	}
+
+	public String getProperty() {
+		return property;
+	}
+
+	public Class<?> getModelClass() {
+		return modelClass;
+	}
+
+}

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

@@ -0,0 +1,64 @@
+package org.springframework.ui.binding.support;
+
+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;
+
+class PropertyNotFoundResult implements BindingResult {
+
+	private String property;
+
+	private Object sourceValue;
+
+	private MessageSource messageSource;
+	
+	public PropertyNotFoundResult(String property, Object sourceValue, MessageSource messageSource) {
+		this.property = property;
+		this.sourceValue = sourceValue;
+		this.messageSource = messageSource;
+	}
+
+	public String getProperty() {
+		return property;
+	}
+
+	public Object getSourceValue() {
+		return sourceValue;
+	}
+
+	public boolean isFailure() {
+		return true;
+	}
+
+	public Alert getAlert() {
+		return new Alert() {
+			public String getCode() {
+				return "propertyNotFound";
+			}
+
+			public Severity getSeverity() {
+				return Severity.WARNING;
+			}
+
+			public String getMessage() {
+				MessageBuilder builder = new MessageBuilder(messageSource);
+				builder.code("bindSuccess");
+				builder.arg("label", new ResolvableArgument(property));
+				builder.arg("value", sourceValue);
+				// TODO lazily create default message
+				builder.defaultMessage("Successfully bound user value " + StylerUtils.style(sourceValue)
+						+ " to property '" + property + "'");
+				return builder.build();
+			}
+		};
+	}
+
+	public String toString() {
+		return getAlert().toString();
+	}
+
+}

org.springframework.context/src/test/java/org/springframework/ui/binding/support/GenericBinderTests.java

@@ -7,6 +7,7 @@ import static org.junit.Assert.assertTrue;
 import java.math.BigDecimal;
 import java.text.ParseException;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.Date;
 import java.util.LinkedHashMap;
@@ -16,23 +17,33 @@ import java.util.Map;
 
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.springframework.context.i18n.LocaleContextHolder;
+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.format.AnnotationFormatterFactory;
 import org.springframework.ui.format.Formatted;
 import org.springframework.ui.format.Formatter;
 import org.springframework.ui.format.date.DateFormatter;
 import org.springframework.ui.format.number.CurrencyFormat;
 import org.springframework.ui.format.number.CurrencyFormatter;
+import org.springframework.ui.format.number.IntegerFormatter;
+import org.springframework.ui.message.MockMessageSource;
+import org.springframework.util.Assert;
 
 public class GenericBinderTests {
 
+	private GenericBinder binder;
+	
 	private TestBean bean;
 
 	@Before
 	public void setUp() {
 		bean = new TestBean();
+		binder = new GenericBinder(bean);
 		LocaleContextHolder.setLocale(Locale.US);
 	}
 
@@ -77,7 +88,6 @@ public class GenericBinderTests {
 
 	@Test
 	public void bindSingleValuesWithDefaultTypeConversionFailure() {
-		GenericBinder binder = new GenericBinder(bean);
 		Map<String, String> values = new LinkedHashMap<String, String>();
 		values.put("string", "test");
 		// bad value
@@ -91,7 +101,6 @@ public class GenericBinderTests {
 
 	@Test
 	public void bindSingleValuePropertyFormatter() throws ParseException {
-		GenericBinder binder = new GenericBinder(bean);
 		binder.bindingRule("date").formatWith(new DateFormatter());
 		binder.bind(Collections.singletonMap("date", "2009-06-01"));
 		assertEquals(new DateFormatter().parse("2009-06-01", Locale.US), bean.getDate());
@@ -99,7 +108,6 @@ public class GenericBinderTests {
 
 	@Test
 	public void bindSingleValuePropertyFormatterParseException() {
-		GenericBinder binder = new GenericBinder(bean);
 		binder.bindingRule("date").formatWith(new DateFormatter());
 		BindingResults results = binder.bind(Collections.singletonMap("date", "bogus"));
 		assertEquals(1, results.size());
@@ -109,8 +117,6 @@ public class GenericBinderTests {
 
 	@Test
 	public void bindSingleValueWithFormatterRegistedByType() throws ParseException {
-		GenericBinder binder = new GenericBinder(bean);
-		
 		GenericFormatterRegistry formatterRegistry = new GenericFormatterRegistry();
 		formatterRegistry.add(Date.class, new DateFormatter());
 		binder.setFormatterRegistry(formatterRegistry);
@@ -119,40 +125,46 @@ public class GenericBinderTests {
 		assertEquals(new DateFormatter().parse("2009-06-01", Locale.US), bean.getDate());
 	}
 
-	/*
 	@Test
 	public void bindSingleValueWithAnnotationFormatterFactoryRegistered() throws ParseException {
-		binder.addBinding("currency");
-		binder.registerFormatterFactory(new CurrencyAnnotationFormatterFactory());
+		GenericFormatterRegistry formatterRegistry = new GenericFormatterRegistry();
+		formatterRegistry.add(new CurrencyAnnotationFormatterFactory());
+		binder.setFormatterRegistry(formatterRegistry);
+
 		binder.bind(Collections.singletonMap("currency", "$23.56"));
 		assertEquals(new BigDecimal("23.56"), bean.getCurrency());
 	}
 
-	@Test(expected = NoSuchBindingException.class)
+	@Test
 	public void bindSingleValuePropertyNotFound() throws ParseException {
-		binder.bind(Collections.singletonMap("bogus", "2009-06-01"));
+		BindingResults results = binder.bind(Collections.singletonMap("bogus", "2009-06-01"));
+		assertEquals("bogus", results.get(0).getProperty());
+		assertTrue(results.get(0).isFailure());
+		assertEquals("propertyNotFound", results.get(0).getAlert().getCode());
 	}
 
 	@Test(expected=MissingSourceValuesException.class)
 	public void bindMissingRequiredSourceValue() {
-		binder.addBinding("string");
-		binder.addBinding("integer").required();
-		Map<String, String> userMap = new LinkedHashMap<String, String>();
-		userMap.put("string", "test");
-		// missing "integer"
-		binder.bind(userMap);
+		binder.setRequired(new String[] {
+			"integer"
+		});
+		// missing "integer" - violated bind contract
+		binder.bind(Collections.singletonMap("string", "test"));
 	}
 
 	@Test
 	public void getBindingCustomFormatter() {
-		binder.addBinding("currency").formatWith(new CurrencyFormatter());		
 		Binding b = binder.getBinding("currency");
-		assertFalse(b.isIndexable());
+		assertFalse(b.isList());
+		assertFalse(b.isMap());
 		assertEquals("", b.getValue());
-		b.setValue("$23.56");
+		b.applySourceValue("$23.56");
+		assertEquals("$23.56", b.getValue());
+		b.commit();
 		assertEquals("$23.56", b.getValue());
 	}
 
+	/*
 	@Test
 	public void getBindingCustomFormatterRequiringTypeCoersion() {
 		// IntegerFormatter formats Longs, so conversion from Integer -> Long is performed