Merging BAEL-968: Apache Commons BeanUtils (#2149)

libraries/pom.xml

@@ -106,6 +106,11 @@
             <artifactId>cglib</artifactId>
             <version>${cglib.version}</version>
         </dependency>
+        <dependency>
+			      <groupId>commons-beanutils</groupId>
+			      <artifactId>commons-beanutils</artifactId>
+			      <version>${commons-beanutils.version}</version>
+		    </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
@@ -383,6 +388,7 @@
         <multiverse.version>0.7.0</multiverse.version>
         <cglib.version>3.2.4</cglib.version>
         <commons-lang.version>3.5</commons-lang.version>
+		    <commons-beanutils.version>1.9.3</commons-beanutils.version>
         <jasypt.version>1.9.2</jasypt.version>
         <javatuples.version>1.2</javatuples.version>
         <javaassist.version>3.21.0-GA</javaassist.version>
@@ -406,4 +412,4 @@
         <java-lsh.version>0.10</java-lsh.version>
     </properties>
 
-</project>
+</project>

libraries/src/main/java/com/baeldung/commons/beanutils/Course.java

@@ -0,0 +1,35 @@
+package com.baeldung.commons.beanutils;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class Course {
+    private String name;
+    private List<String> codes;
+    private Map<String, Student> enrolledStudent = new HashMap<String, Student>();
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public List<String> getCodes() {
+        return codes;
+    }
+
+    public void setCodes(List<String> codes) {
+        this.codes = codes;
+    }
+
+    public void setEnrolledStudent(String enrolledId, Student student) {
+        enrolledStudent.put(enrolledId, student);
+    }
+
+    public Student getEnrolledStudent(String enrolledId) {
+        return enrolledStudent.get(enrolledId);
+    }
+}

libraries/src/main/java/com/baeldung/commons/beanutils/CourseService.java

@@ -0,0 +1,34 @@
+package com.baeldung.commons.beanutils;
+
+import java.lang.reflect.InvocationTargetException;
+import java.util.List;
+
+import org.apache.commons.beanutils.PropertyUtils;
+
+public class CourseService {
+
+    public static void setValues(Course course, String name, List<String> codes) 
+            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
+        // Setting the simple properties
+        PropertyUtils.setSimpleProperty(course, "name", name);
+        PropertyUtils.setSimpleProperty(course, "codes", codes);
+    }
+    
+    public static void setIndexedValue(Course course, int codeIndex, String code)
+            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
+        // Setting the indexed properties
+        PropertyUtils.setIndexedProperty(course, "codes[" + codeIndex + "]", code);
+    }
+
+    public static void setMappedValue(Course course, String enrollId, Student student)
+            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
+        // Setting the mapped properties
+        PropertyUtils.setMappedProperty(course, "enrolledStudent(" + enrollId + ")", student);
+    }
+    
+    public static String getNestedValue(Course course, String enrollId, String nestedPropertyName)
+            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
+        return (String) PropertyUtils.getNestedProperty(
+                 course, "enrolledStudent(" + enrollId + ")." + nestedPropertyName);
+    }
+}

libraries/src/main/java/com/baeldung/commons/beanutils/Student.java

@@ -0,0 +1,13 @@
+package com.baeldung.commons.beanutils;
+
+public class Student {
+    private String name;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

libraries/src/test/java/com/baeldung/commons/beanutils/CourseServiceTest.java

@@ -0,0 +1,38 @@
+package com.baeldung.commons.beanutils;
+
+import java.lang.reflect.InvocationTargetException;
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class CourseServiceTest {
+    
+    @Test
+    public void givenCourse_whenSetValuesUsingPropertyUtil_thenReturnSetValues() 
+            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
+        Course course = new Course();
+        String name = "Computer Science";
+        List<String> codes = Arrays.asList("CS", "CS01");
+        CourseService.setValues(course, name, codes);
+        
+        Assert.assertEquals(name, course.getName());
+        Assert.assertEquals(2, course.getCodes().size());
+        Assert.assertEquals("CS", course.getCodes().get(0));
+        
+        CourseService.setIndexedValue(course, 1, "CS02");
+        Assert.assertEquals("CS02", course.getCodes().get(1));
+        
+        Student student = new Student();
+        String studentName = "Joe";
+        student.setName(studentName);
+        
+        CourseService.setMappedValue(course, "ST-1", student);
+        Assert.assertEquals(student, course.getEnrolledStudent("ST-1"));
+        
+        String accessedStudentName = CourseService.getNestedValue(course, "ST-1", "name");
+        Assert.assertEquals(studentName, accessedStudentName);
+    }
+
+}