initial validation constraint spi commit

org.springframework.context/src/main/java/org/springframework/ui/validation/ValidationResults.java

@@ -13,14 +13,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
 package org.springframework.ui.validation;
 
-/**
- * TODO Document ValidateResults.
- * @author Keith Donald
- * @since 3.0
- */
-public interface ValidationResults {
+public interface ValidationResults extends Iterable<ValidationResult> {
 
 }

org.springframework.context/src/main/java/org/springframework/ui/validation/Validator.java

@@ -13,25 +13,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
 package org.springframework.ui.validation;
 
 import java.util.List;
 
-/**
- * TODO Document Validator.
- * @author Keith Donald
- * @since 3.0
- */
-public interface Validator {
-
-	/**
-	 * TODO Document validate().
-	 *
-	 * @param model
-	 * @param properties
-	 * @return
-	 */
-	ValidationResults validate(Object model, List<String> properties);
-
+public interface Validator<M> {
+	ValidationResults validate(M model, List<String> properties);
 }

org.springframework.context/src/main/java/org/springframework/ui/validation/constraint/Impact.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.validation.constraint;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.springframework.ui.alert.Severity;
+
+@Target({ElementType.TYPE})
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+public @interface Impact {
+
+	Severity value();
+
+}

org.springframework.context/src/main/java/org/springframework/ui/validation/constraint/Message.java

@@ -0,0 +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.validation.constraint;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target({ElementType.TYPE})
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+public @interface Message {
+
+	String[] value();
+
+}

org.springframework.context/src/main/java/org/springframework/ui/validation/constraint/ValidationConstraint.java

@@ -0,0 +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.validation.constraint;
+
+public interface ValidationConstraint<T> {
+	boolean validate(T value);
+}

org.springframework.context/src/test/java/org/springframework/ui/lifecycle/BindAndValidateLifecycleTests.java

@@ -3,13 +3,17 @@ package org.springframework.ui.lifecycle;
 import static org.junit.Assert.assertEquals;
 
 import java.math.BigDecimal;
+import java.util.ArrayList;
 import java.util.Date;
 import java.util.HashMap;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
 import org.junit.Before;
 import org.junit.Test;
+import org.springframework.ui.alert.Alert;
+import org.springframework.ui.alert.Alerts;
 import org.springframework.ui.alert.Severity;
 import org.springframework.ui.alert.support.DefaultAlertContext;
 import org.springframework.ui.binding.Binder;
@@ -17,6 +21,12 @@ import org.springframework.ui.binding.Bound;
 import org.springframework.ui.binding.Model;
 import org.springframework.ui.binding.support.WebBinderFactory;
 import org.springframework.ui.format.number.CurrencyFormat;
+import org.springframework.ui.validation.ValidationResult;
+import org.springframework.ui.validation.ValidationResults;
+import org.springframework.ui.validation.Validator;
+import org.springframework.ui.validation.constraint.Impact;
+import org.springframework.ui.validation.constraint.Message;
+import org.springframework.ui.validation.constraint.ValidationConstraint;
 
 public class BindAndValidateLifecycleTests {
 
@@ -31,7 +41,112 @@ public class BindAndValidateLifecycleTests {
 		model = new TestBean();
 		alertContext = new DefaultAlertContext();
 		Binder binder = new WebBinderFactory().getBinder(model);
-		lifecycle = new BindAndValidateLifecycle(binder, null, alertContext);
+		Validator<TestBean> validator = new TestBeanValidator();
+		lifecycle = new BindAndValidateLifecycle(binder, validator, alertContext);
+	}
+	
+	static class TestBeanValidator implements Validator<TestBean> {
+		public ValidationResults validate(TestBean model, List<String> properties) {
+			TestValidationResults results = new TestValidationResults();
+			RequiredConstraint required = new RequiredConstraint();
+			boolean valid = required.validate(model.getString());
+			if (!valid) {
+				
+			}
+			return results;
+		}		
+	}
+	
+	@Message({"en=#{label} is required", "es=#{label} es necesario"})
+	static class RequiredConstraint implements ValidationConstraint<Object> {
+		public boolean validate(Object value) {
+			if (value != null) {
+				return value instanceof String ? ((String) value).length() > 0 : true;
+			} else {
+				return false;
+			}
+		}
+	}
+	
+	@Message("#{label} is a weak password")
+	@Impact(Severity.WARNING)
+	static class StrongPasswordConstraint implements ValidationConstraint<String> {		
+		public boolean validate(String password) {
+			if (password.length() > 6) {
+				return true;
+			} else {
+				return false;
+			}
+		}		
+	}
+	
+	@Message("#{label} could not be confirmed; #{value} must match #{model.confirmPassword}")
+	static class ConfirmedPasswordConstraint implements ValidationConstraint<SignupForm> {
+		public boolean validate(SignupForm form) {
+			if (form.password.equals(form.confirmPassword)) {
+				return true;
+			} else {
+				return false;
+			}
+		}		
+	}
+	
+	@Message("#{label} must be between #{this.min} and #{this.max}")
+	static class RangeConstraint implements ValidationConstraint<Number> {
+		private Long min;
+		
+		private Long max;
+		
+		public RangeConstraint(Long min, Long max) {
+			this.min = min;
+			this.max = max;
+		}
+		
+		public boolean validate(Number value) {
+			Long longValue = value.longValue();
+			if (longValue >= min && longValue <= max) {
+				return true;
+			} else {
+				return false;
+			}
+		}
+	}
+	
+	static class TestValidationResults implements ValidationResults {
+		private List<ValidationResult> results = new ArrayList<ValidationResult>();
+
+		public void add(ValidationResult result) {
+			results.add(result);
+		}
+		
+		public Iterator<ValidationResult> iterator() {
+			return results.iterator();
+		}
+		
+	}
+	
+	static class TestValidationFailure implements ValidationResult {
+
+		private String property;
+		
+		private String message;
+		
+		public TestValidationFailure(String property, String message) {
+			this.property = property;
+		}
+
+		public String getProperty() {
+			return property;
+		}
+
+		public Alert getAlert() {
+			return Alerts.error(message);
+		}
+
+		public boolean isFailure() {
+			return true;
+		}
+		
 	}
 
 	@Test
@@ -200,7 +315,12 @@ public class BindAndValidateLifecycleTests {
 		public void setNotEditable(String notEditable) {
 			this.notEditable = notEditable;
 		}
-		
-		
+			
+	}
+	
+	public static class SignupForm {
+		private String username;
+		private String password;
+		private String confirmPassword;
 	}
 }