update of configuration (#41)

* update of configuration

* comments.

Author: sjaakd

mapstruct-lombok/pom.xml

@@ -36,24 +36,28 @@
     </properties>
 
     <dependencies>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>${org.projectlombok.version}</version>
-            <scope>provided</scope>
-        </dependency>
 
         <dependency>
             <groupId>org.mapstruct</groupId>
             <artifactId>mapstruct</artifactId>
             <version>${org.mapstruct.version}</version>
         </dependency>
+
+        <!-- lombok dependencies should not end up on classpath -->
         <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>${org.projectlombok.version}</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <!-- IntelliJ pre 2018.1.1 requires the mapstruct processor to be present as provided dependency -->
+<!--        <dependency>
             <groupId>org.mapstruct</groupId>
             <artifactId>mapstruct-processor</artifactId>
             <version>${org.mapstruct.version}</version>
             <scope>provided</scope>
-        </dependency>
+        </dependency>-->
 
         <dependency>
             <groupId>junit</groupId>
@@ -70,6 +74,29 @@
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-compiler-plugin</artifactId>
                     <version>3.6.2</version>
+                    <configuration>
+                        <source>1.8</source>
+                        <target>1.8</target>
+                        <!-- See https://maven.apache.org/plugins/maven-compiler-plugin/compile-mojo.html -->
+                        <!-- Classpath elements to supply as annotation processor path. If specified, the compiler   -->
+                        <!-- will detect annotation processors only in those classpath elements. If omitted, the     -->
+                        <!-- default classpath is used to detect annotation processors. The detection itself depends -->
+                        <!-- on the configuration of annotationProcessors.                                           -->
+                        <!--                                                                                         -->
+                        <!-- According to this documentation, the provided dependency processor is not considered!   -->
+                        <annotationProcessorPaths>
+                            <path>
+                                <groupId>org.mapstruct</groupId>
+                                <artifactId>mapstruct-processor</artifactId>
+                                <version>${org.mapstruct.version}</version>
+                            </path>
+                            <path>
+                                <groupId>org.projectlombok</groupId>
+                                <artifactId>lombok</artifactId>
+                                <version>${org.projectlombok.version}</version>
+                            </path>
+                        </annotationProcessorPaths>
+                    </configuration>
                 </plugin>
             </plugins>
         </pluginManagement>