JAVA-628: Moved 3 articles to spring-di-2, added README

2020-07-15 17:31:47 +05:30
parent 013c4917d2
commit f3c3086b07
33 changed files with 872 additions and 0 deletions
@@ -0,0 +1,18 @@
+package com.baeldung.collection;
+
+/**
+ * Created by Gebruiker on 5/22/2018.
+ */
+public class BaeldungBean {
+
+    private String name;
+
+    public BaeldungBean(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public String toString() {
+        return name;
+    }
+}
@@ -0,0 +1,50 @@
+package com.baeldung.collection;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.annotation.Order;
+
+import java.util.*;
+
+@Configuration
+public class CollectionConfig {
+
+    @Bean
+    public CollectionsBean getCollectionsBean() {
+        return new CollectionsBean(new HashSet<>(Arrays.asList("John", "Adam", "Harry")));
+    }
+
+    @Bean
+    public List<String> nameList(){
+        return Arrays.asList("John", "Adam", "Harry", null);
+    }
+
+    @Bean
+    public Map<Integer, String> nameMap(){
+        Map<Integer, String>  nameMap = new HashMap<>();
+        nameMap.put(1, "John");
+        nameMap.put(2, "Adam");
+        nameMap.put(3, "Harry");
+        return nameMap;
+    }
+
+    @Bean
+    @Qualifier("CollectionsBean")
+    @Order(2)
+    public BaeldungBean getElement() {
+        return new BaeldungBean("John");
+    }
+
+    @Bean
+    @Order(3)
+    public BaeldungBean getAnotherElement() {
+        return new BaeldungBean("Adam");
+    }
+
+    @Bean
+    @Order(1)
+    public BaeldungBean getOneMoreElement() {
+        return new BaeldungBean("Harry");
+    }
+}
@@ -0,0 +1,21 @@
+package com.baeldung.collection;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+/**
+ * Created by Gebruiker on 5/18/2018.
+ */
+public class CollectionInjectionDemo {
+
+    public static void main(String[] args) {
+
+        ApplicationContext context = new AnnotationConfigApplicationContext(CollectionConfig.class);
+        CollectionsBean collectionsBean = context.getBean(CollectionsBean.class);
+        collectionsBean.printNameList();
+        collectionsBean.printNameSet();
+        collectionsBean.printNameMap();
+        collectionsBean.printBeanList();
+        collectionsBean.printNameListWithDefaults();
+    }
+}
@@ -0,0 +1,62 @@
+package com.baeldung.collection;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.beans.factory.annotation.Value;
+
+/**
+ * Created by Gebruiker on 5/18/2018.
+ */
+public class CollectionsBean {
+
+    @Autowired
+    private List<String> nameList;
+
+    private Set<String> nameSet;
+
+    private Map<Integer, String> nameMap;
+
+    @Autowired(required = false)
+    @Qualifier("CollectionsBean")
+    private List<BaeldungBean> beanList = new ArrayList<>();
+
+    @Value("${names.list:}#{T(java.util.Collections).emptyList()}")
+    private List<String> nameListWithDefaultValue;
+    
+    public CollectionsBean() {
+    }
+
+    public CollectionsBean(Set<String> strings) {
+        this.nameSet = strings;
+    }
+
+    @Autowired
+    public void setNameMap(Map<Integer, String> nameMap) {
+        this.nameMap = nameMap;
+    }
+
+    public void printNameList() {
+        System.out.println(nameList);
+    }
+
+    public void printNameSet() {
+        System.out.println(nameSet);
+    }
+
+    public void printNameMap() {
+        System.out.println(nameMap);
+    }
+
+    public void printBeanList() {
+        System.out.println(beanList);
+    }
+    
+    public void printNameListWithDefaults() {
+        System.out.println(nameListWithDefaultValue);
+    }
+}
@@ -0,0 +1,13 @@
+package com.baeldung.dependency;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class AnotherArbitraryDependency extends ArbitraryDependency {
+
+    private final String label = "Another Arbitrary Dependency";
+
+    public String toString() {
+        return label;
+    }
+}
@@ -0,0 +1,13 @@
+package com.baeldung.dependency;
+
+import org.springframework.stereotype.Component;
+
+@Component(value = "autowiredFieldDependency")
+public class ArbitraryDependency {
+
+    private final String label = "Arbitrary Dependency";
+
+    public String toString() {
+        return label;
+    }
+}
@@ -0,0 +1,13 @@
+package com.baeldung.dependency;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class YetAnotherArbitraryDependency extends ArbitraryDependency {
+
+    private final String label = "Yet Another Arbitrary Dependency";
+
+    public String toString() {
+        return label;
+    }
+}
@@ -0,0 +1,17 @@
+package com.baeldung.staticvalue.injection;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
+import org.springframework.context.annotation.PropertySource;
+
+@SpringBootApplication(exclude={DataSourceAutoConfiguration.class})
+@PropertySource("/application.properties")
+
+public class Application {
+
+	public static void main(String[] args) {
+		SpringApplication.run(Application.class, args);
+	}
+
+}
@@ -0,0 +1,30 @@
+package com.baeldung.staticvalue.injection;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Arrays;
+import java.util.List;
+
+@RestController
+public class PropertyController {
+
+    @Value("${name}")
+    private String name;
+
+    @Value("${name}")
+    private static String NAME_NULL;
+
+    private static String NAME_STATIC;
+
+    @Value("${name}")
+    public void setNameStatic(String name){
+        PropertyController.NAME_STATIC = name;
+    }
+
+    @GetMapping("/properties")
+    public List<String> getProperties(){
+        return Arrays.asList(this.name, NAME_STATIC, NAME_NULL)  ;
+    }
+}