Added tutorial sample for BAEL-2550

spring-all/src/main/java/org/baeldung/sampleabstract/AbstractGenericService.java

@@ -0,0 +1,38 @@
+package org.baeldung.sampleabstract;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+public abstract class AbstractGenericService<T, S> {
+
+    @Autowired
+    private T genericFieldT;
+
+    private S genericFieldS;
+
+    public T getGenericFieldT() {
+
+        return genericFieldT;
+    }
+
+    public void setGenericFieldT(T genericFieldT) {
+
+        this.genericFieldT = genericFieldT;
+    }
+
+    public S getGenericFieldS() {
+
+        return genericFieldS;
+    }
+
+    @Autowired
+    public void setGenericFieldS(S genericFieldS) {
+
+        this.genericFieldS = genericFieldS;
+    }
+
+    public void afterInitialize() {
+
+        System.out.println(genericFieldT.getClass().getSimpleName());
+        System.out.println(genericFieldS.getClass().getSimpleName());
+    }
+}

spring-all/src/main/java/org/baeldung/sampleabstract/AbstractService.java

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+package org.baeldung.sampleabstract;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+
+public abstract class AbstractService {
+
+    @Autowired
+    private FooBean fooBean;
+
+    private BarBean barBean;
+
+    private FooBarBean fooBarBean;
+
+    public AbstractService(FooBarBean fooBarBean) {
+
+        this.fooBarBean = fooBarBean;
+    }
+
+    public FooBean getFooBean() {
+
+        return fooBean;
+    }
+
+    public void setFooBean(FooBean fooBean) {
+
+        this.fooBean = fooBean;
+    }
+
+    public BarBean getBarBean() {
+
+        return barBean;
+    }
+
+    @Autowired
+    public void setBarBean(BarBean barBean) {
+
+        this.barBean = barBean;
+    }
+
+    public FooBarBean getFooBarBean() {
+
+        return fooBarBean;
+    }
+
+    public void setFooBarBean(FooBarBean fooBarBean) {
+
+        this.fooBarBean = fooBarBean;
+    }
+
+    public void afterInitialize() {
+
+        System.out.println(fooBean.value());
+        System.out.println(barBean.value());
+        System.out.println(fooBarBean.value());
+    }
+}

spring-all/src/main/java/org/baeldung/sampleabstract/BarBean.java

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+package org.baeldung.sampleabstract;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BarBean {
+
+    public String value() {
+
+        return "barBean";
+    }
+}

spring-all/src/main/java/org/baeldung/sampleabstract/DemoApp.java

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+package org.baeldung.sampleabstract;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+import javax.annotation.PostConstruct;
+
+@Configuration
+@ComponentScan(basePackages = "org.baeldung.sampleabstract")
+public class DemoApp {
+
+    @Autowired
+    private FooService fooService;
+
+    @Autowired
+    private FooGenericService fooGenericService;
+
+    public static void main(String[] args) {
+
+        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(DemoApp.class);
+    }
+
+    @PostConstruct
+    public void afterInitialize() {
+
+        fooService.afterInitialize();
+        fooGenericService.afterInitialize();
+    }
+}

spring-all/src/main/java/org/baeldung/sampleabstract/FooBarBean.java

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+package org.baeldung.sampleabstract;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class FooBarBean {
+
+    public String value() {
+
+        return "fooBarBean";
+    }
+}

spring-all/src/main/java/org/baeldung/sampleabstract/FooBean.java

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+package org.baeldung.sampleabstract;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class FooBean {
+
+    public String value() {
+
+        return "fooBean";
+    }
+}

spring-all/src/main/java/org/baeldung/sampleabstract/FooGenericService.java

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+package org.baeldung.sampleabstract;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class FooGenericService extends AbstractGenericService<FooBean, BarBean> {
+
+}

spring-all/src/main/java/org/baeldung/sampleabstract/FooService.java

@@ -0,0 +1,14 @@
+package org.baeldung.sampleabstract;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class FooService extends AbstractService {
+
+    @Autowired
+    public FooService(FooBarBean fooBarBean) {
+
+        super(fooBarBean);
+    }
+}