Merge pull request #7294 from juanvaccari/BAEL-2928

BAEL-2928 - Create new spring-di project with examples for Qualifier …

pom.xml

@@ -676,6 +676,7 @@
 				<!-- <module>spring-data-rest-querydsl</module> --> <!-- BAEL-14304 -->
 				<module>spring-dispatcher-servlet</module>
 				<module>spring-drools</module>
+				<module>spring-di</module>
 
 				<module>spring-ehcache</module>
 				<!-- <module>spring-ejb</module> BAEL-14304 -->
@@ -873,6 +874,7 @@
 				<module>spring-data-rest</module>
 				<module>spring-dispatcher-servlet</module>
 				<module>spring-drools</module>
+				<module>spring-di</module>
 				<module>spring-ehcache</module>
 				<module>spring-freemarker</module>
 				<module>persistence-modules/spring-hibernate-3</module>
@@ -1345,6 +1347,7 @@
 				<module>spring-data-rest-querydsl</module>
 				<module>spring-dispatcher-servlet</module>
 				<module>spring-drools</module>
+				<module>spring-di</module>
 
 				<module>spring-ehcache</module>
 				<module>spring-ejb</module>
@@ -1585,3 +1588,4 @@
 	</properties>
 
 </project>
+

spring-di/pom.xml

@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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>
+    <artifactId>spring-di</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>war</packaging>
+
+    <parent>
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-2</relativePath>
+    </parent>
+
+    <dependencies>
+        <!-- Spring -->
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>javax.annotation</groupId>
+            <artifactId>javax.annotation-api</artifactId>
+            <version>${annotation-api.version}</version>
+        </dependency>
+
+        <!-- test scoped -->
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework</groupId>
+                <artifactId>spring-framework-bom</artifactId>
+                <version>${org.springframework.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>org.springframework</groupId>
+                <artifactId>spring-core</artifactId>
+                <version>${org.springframework.version}</version>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <build>
+        <finalName>spring-di</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-war-plugin</artifactId>
+                <version>3.2.2</version>
+                <configuration>
+                    <failOnMissingWebXml>false</failOnMissingWebXml>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <profiles>
+        <profile>
+            <id>dev</id>
+            <activation>
+                <activeByDefault>true</activeByDefault>
+            </activation>
+            <properties>
+                <spring.profiles.active>dev</spring.profiles.active>
+            </properties>
+        </profile>
+        <profile>
+            <id>prod</id>
+            <properties>
+                <spring.profiles.active>prod</spring.profiles.active>
+            </properties>
+        </profile>
+    </profiles>
+
+    <properties>
+        <start-class>org.baeldung.org.baeldung.sample.App</start-class>
+        <!-- Spring -->
+        <org.springframework.version>5.0.6.RELEASE</org.springframework.version>
+        <annotation-api.version>1.3.2</annotation-api.version>
+    </properties>
+
+</project>

spring-di/src/main/java/org/baeldung/sample/App.java

@@ -0,0 +1,11 @@
+package org.baeldung.sample;
+
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+public class App {
+    public static void main(String[] args) {
+        AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(AppConfig.class);
+        FooService fooService = ctx.getBean(FooService.class);
+        fooService.doStuff();
+    }
+}

spring-di/src/main/java/org/baeldung/sample/AppConfig.java

@@ -0,0 +1,10 @@
+package org.baeldung.sample;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("org.baeldung.sample")
+public class AppConfig {
+
+}

spring-di/src/main/java/org/baeldung/sample/Bar.java

@@ -0,0 +1,5 @@
+package org.baeldung.sample;
+
+public class Bar {
+
+}

spring-di/src/main/java/org/baeldung/sample/BarFormatter.java

@@ -0,0 +1,13 @@
+package org.baeldung.sample;
+
+import org.springframework.stereotype.Component;
+
+@FormatterType("Bar")
+@Component
+public class BarFormatter implements Formatter {
+
+    public String format() {
+        return "bar";
+    }
+
+}

spring-di/src/main/java/org/baeldung/sample/Foo.java

@@ -0,0 +1,5 @@
+package org.baeldung.sample;
+
+public class Foo {
+
+}

spring-di/src/main/java/org/baeldung/sample/FooDAO.java

@@ -0,0 +1,5 @@
+package org.baeldung.sample;
+
+public class FooDAO {
+
+}

spring-di/src/main/java/org/baeldung/sample/FooFormatter.java

@@ -0,0 +1,13 @@
+package org.baeldung.sample;
+
+import org.springframework.stereotype.Component;
+
+@FormatterType("Foo")
+@Component
+public class FooFormatter implements Formatter {
+
+    public String format() {
+        return "foo";
+    }
+
+}

spring-di/src/main/java/org/baeldung/sample/FooService.java

@@ -0,0 +1,17 @@
+package org.baeldung.sample;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class FooService {
+
+    @Autowired
+    @FormatterType("Foo")
+    private Formatter formatter;
+
+    public String doStuff() {
+        return formatter.format();
+    }
+
+}

spring-di/src/main/java/org/baeldung/sample/Formatter.java

@@ -0,0 +1,7 @@
+package org.baeldung.sample;
+
+public interface Formatter {
+
+    String format();
+
+}

spring-di/src/main/java/org/baeldung/sample/FormatterType.java

@@ -0,0 +1,17 @@
+package org.baeldung.sample;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Qualifier
+@Target({ ElementType.FIELD, ElementType.METHOD, ElementType.TYPE, ElementType.PARAMETER })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface FormatterType {
+
+    String value();
+
+}

spring-di/src/test/java/org/baeldung/sample/FooServiceIntegrationTest.java

@@ -0,0 +1,22 @@
+package org.baeldung.sample;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.support.AnnotationConfigContextLoader;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = AppConfig.class, loader = AnnotationConfigContextLoader.class)
+public class FooServiceIntegrationTest {
+
+    @Autowired
+    FooService fooService;
+
+    @Test
+    public void whenFooFormatterType_thenReturnFoo() {
+        Assert.assertEquals("foo", fooService.doStuff());
+    }
+}