FORGE-885: Implemented bean-validation addon

bean-validation/README.asciidoc

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+== bean-validation
+:idprefix: id_ 
+
+This addon provides support of link:http://beanvalidation.org/1.1/(Bean Validation 1.1) features for dependent addons. 
+
+=== Depends on
+
+[options="header"]
+|===
+|Addon |Exported |Optional
+
+|org.jboss.forge.furnace.container:cdi
+|yes
+|no
+
+|===
+
+== Setup
+
+This Addon requires the following installation steps.
+
+=== Add configuration to pom.xml 
+
+To use this addon, you must add it as a dependency in the *pom.xml* of your `forge-addon` classified artifact:
+
+[source,xml]
+----
+<dependency>
+   <groupId>org.jboss.forge.addon</groupId>
+   <artifactId>bean-validation</artifactId>
+   <classifier>forge-addon</classifier>
+   <version>${version}</version>
+</dependency>
+----
+
+== Features
+
+Method validation:: 
+	link::http://beanvalidation.org/1.1/spec/#d0e267(Method validation) is provided out-of-box for usage in addon methods.
++
+[source,java]
+----
+
+public class MyService {
+   public void sayHello(@NotNull String name) {
+   }
+}
+
+@Inject private MyService service;
+service.sayHello(null); // will throw ValidationException
+----
++
+[TIP] 
+====
+This feature only works with addons that use the container-cdi
+==== 

bean-validation/addon/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.jboss.forge.addon</groupId>
+		<artifactId>bean-validation-parent</artifactId>
+		<version>2.0.0-SNAPSHOT</version>
+		<relativePath>../pom.xml</relativePath>
+	</parent>
+
+	<artifactId>bean-validation</artifactId>
+	<name>Forge - Bean Validation Addon</name>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.jboss.forge.addon</groupId>
+			<artifactId>bean-validation-api</artifactId>
+			<scope>compile</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.jboss.forge.addon</groupId>
+			<artifactId>bean-validation-impl</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.jboss.forge.addon</groupId>
+			<artifactId>ui</artifactId>
+			<classifier>forge-addon</classifier>
+			<scope>provided</scope>
+			<optional>true</optional>
+		</dependency>
+
+		<!-- Furnace Container -->
+		<dependency>
+			<groupId>org.jboss.forge.furnace.container</groupId>
+			<artifactId>cdi</artifactId>
+			<classifier>forge-addon</classifier>
+			<scope>provided</scope>
+		</dependency>
+	</dependencies>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.jboss.forge.furnace</groupId>
+				<artifactId>furnace-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<id>generate-dot</id>
+						<phase>prepare-package</phase>
+						<goals>
+							<goal>generate-dot</goal>
+						</goals>
+						<configuration>
+							<attach>true</attach>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-jar-plugin</artifactId>
+				<executions>
+					<execution>
+						<id>create-forge-addon</id>
+						<phase>package</phase>
+						<goals>
+							<goal>jar</goal>
+						</goals>
+						<inherited>false</inherited>
+						<configuration>
+							<classifier>forge-addon</classifier>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+
+		</plugins>
+	</build>
+</project>

bean-validation/addon/src/main/java/org/jboss/forge/addon/validation/package-info.java

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+/*
+ * Copyright 2013 Red Hat, Inc. and/or its affiliates.
+ *
+ * Licensed under the Eclipse Public License version 1.0, available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.jboss.forge.addon.validation;
+

bean-validation/api/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.jboss.forge.addon</groupId>
+		<artifactId>bean-validation-parent</artifactId>
+		<version>2.0.0-SNAPSHOT</version>
+	</parent>
+	<artifactId>bean-validation-api</artifactId>
+	<name>Forge - Bean Validation API</name>
+
+	<dependencies>
+		<!-- Bean Validation 1.1 API -->
+		<dependency>
+			<groupId>javax.validation</groupId>
+			<artifactId>validation-api</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.jboss.forge.furnace</groupId>
+			<artifactId>furnace-api</artifactId>
+			<scope>provided</scope>
+		</dependency>
+	</dependencies>
+</project>

bean-validation/impl/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.jboss.forge.addon</groupId>
+		<artifactId>bean-validation-parent</artifactId>
+		<version>2.0.0-SNAPSHOT</version>
+	</parent>
+	<artifactId>bean-validation-impl</artifactId>
+	<name>Forge - Bean Validation Impl</name>
+	<dependencies>
+		<dependency>
+			<groupId>org.jboss.forge.furnace.container</groupId>
+			<artifactId>cdi-api</artifactId>
+			<scope>provided</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.jboss.forge.addon</groupId>
+			<artifactId>bean-validation-api</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.hibernate</groupId>
+			<artifactId>hibernate-validator-cdi</artifactId>
+		</dependency>
+
+
+		<dependency>
+			<groupId>org.jboss.forge.addon</groupId>
+			<artifactId>ui</artifactId>
+			<classifier>forge-addon</classifier>
+			<scope>provided</scope>
+			<optional>true</optional>
+		</dependency>
+	</dependencies>
+</project>

bean-validation/impl/src/main/java/org/jboss/addon/validation/constraintvalidators/DelegatingValidator.java

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+/**
+ * Copyright 2013 Red Hat, Inc. and/or its affiliates.
+ *
+ * Licensed under the Eclipse Public License version 1.0, available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.jboss.addon.validation.constraintvalidators;
+
+import java.lang.annotation.Annotation;
+
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+
+import org.jboss.forge.addon.ui.input.InputComponent;
+import org.jboss.forge.addon.ui.input.ManyValued;
+import org.jboss.forge.addon.ui.util.InputComponents;
+
+/**
+ * A {@link ConstraintValidator} for InputComponents
+ * 
+ * @author <a href="ggastald@redhat.com">George Gastaldi</a>
+ */
+public abstract class DelegatingValidator<T extends Annotation> implements
+         ConstraintValidator<T, InputComponent<Object, Object>>
+{
+
+   private final ConstraintValidator<T, ?> singleValidator;
+   private final ConstraintValidator<T, ?> manyValidator;
+
+   public DelegatingValidator(ConstraintValidator<T, ?> singleValidator, ConstraintValidator<T, ?> manyValidator)
+   {
+      super();
+      this.singleValidator = singleValidator;
+      this.manyValidator = manyValidator;
+   }
+
+   @Override
+   public void initialize(T constraintAnnotation)
+   {
+      singleValidator.initialize(constraintAnnotation);
+   }
+
+   @SuppressWarnings("unchecked")
+   @Override
+   public boolean isValid(InputComponent<Object, Object> value, ConstraintValidatorContext context)
+   {
+      Object valueFor = InputComponents.getValueFor(value);
+      if (value instanceof ManyValued)
+      {
+         return ((ConstraintValidator<T, Object>) manyValidator).isValid(valueFor, context);
+      }
+      else
+      {
+         return ((ConstraintValidator<T, Object>) singleValidator).isValid(valueFor, context);
+      }
+   }
+}

bean-validation/impl/src/main/java/org/jboss/addon/validation/constraintvalidators/SizeValidator.java

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+/**
+ * Copyright 2013 Red Hat, Inc. and/or its affiliates.
+ *
+ * Licensed under the Eclipse Public License version 1.0, available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.jboss.addon.validation.constraintvalidators;
+
+import javax.validation.constraints.Size;
+
+import org.hibernate.validator.internal.constraintvalidators.SizeValidatorForCharSequence;
+import org.hibernate.validator.internal.constraintvalidators.SizeValidatorForCollection;
+import org.jboss.forge.addon.ui.util.InputComponents;
+
+/**
+ * Size Validator for {@link InputComponents}
+ * 
+ * @author <a href="ggastald@redhat.com">George Gastaldi</a>
+ */
+public class SizeValidator extends DelegatingValidator<Size>
+{
+   public SizeValidator()
+   {
+      super(new SizeValidatorForCharSequence(), new SizeValidatorForCollection());
+   }
+}

bean-validation/impl/src/main/java/org/jboss/addon/validation/ui/UIValidationAdapter.java

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+/**
+ * Copyright 2013 Red Hat, Inc. and/or its affiliates.
+ *
+ * Licensed under the Eclipse Public License version 1.0, available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.jboss.addon.validation.ui;
+
+import java.util.Set;
+
+import javax.validation.ConstraintViolation;
+import javax.validation.Validator;
+
+import org.jboss.forge.addon.ui.UICommand;
+import org.jboss.forge.addon.ui.UIValidator;
+import org.jboss.forge.addon.ui.context.UIValidationContext;
+import org.jboss.forge.addon.ui.input.InputComponent;
+import org.jboss.forge.addon.ui.util.InputComponents;
+
+/**
+ * A {@link UIValidator} adapter that validates using Bean Validation 1.1
+ * 
+ * @author <a href="ggastald@redhat.com">George Gastaldi</a>
+ */
+public class UIValidationAdapter implements UIValidator
+{
+   private final Validator validator;
+   private final InputComponent<?, ?> input;
+   private final Class<UICommand> commandClass;
+
+   public UIValidationAdapter(Validator validator, InputComponent<?, ?> input, Class<UICommand> commandClass)
+   {
+      super();
+      this.validator = validator;
+      this.input = input;
+      this.commandClass = commandClass;
+   }
+
+   @Override
+   public void validate(UIValidationContext context)
+   {
+      Object value = InputComponents.getValueFor(input);
+      Set<ConstraintViolation<UICommand>> violations = validator.validateValue(commandClass, input.getName(), value);
+      for (ConstraintViolation<UICommand> violation : violations)
+      {
+         context.addValidationError(input, violation.getMessage());
+      }
+   }
+}

bean-validation/impl/src/main/java/org/jboss/addon/validation/ui/ValidationInputComponentEnricher.java

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+/**
+ * Copyright 2013 Red Hat, Inc. and/or its affiliates.
+ *
+ * Licensed under the Eclipse Public License version 1.0, available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.jboss.addon.validation.ui;
+
+import javax.enterprise.inject.spi.InjectionPoint;
+import javax.inject.Inject;
+import javax.validation.Validator;
+
+import org.jboss.forge.addon.ui.UICommand;
+import org.jboss.forge.addon.ui.UIValidator;
+import org.jboss.forge.addon.ui.input.InputComponent;
+import org.jboss.forge.addon.ui.input.InputComponentInjectionEnricher;
+
+/**
+ * Enables Bean Validation 1.1 as a {@link UIValidator} object in the {@link InputComponent}
+ * 
+ * @author <a href="ggastald@redhat.com">George Gastaldi</a>
+ */
+public class ValidationInputComponentEnricher implements InputComponentInjectionEnricher
+{
+   @Inject
+   private Validator validator;
+
+   @SuppressWarnings("unchecked")
+   @Override
+   public void enrich(InjectionPoint injectionPoint, InputComponent<?, ?> input)
+   {
+      Class<?> beanType = injectionPoint.getBean().getBeanClass();
+      UIValidationAdapter adapter = new UIValidationAdapter(validator, input, (Class<UICommand>) beanType);
+      input.setValidator(adapter);
+   }
+}

bean-validation/impl/src/main/resources/META-INF/beans.xml

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+<?xml version="1.0"?>
+<beans xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+   xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://jboss.org/schema/cdi/beans_1_0.xsd" />