Added support auto generating Q classes for QueryDSL

spring-data-mongodb/pom.xml

@@ -71,18 +71,31 @@
             <artifactId>querydsl-mongodb</artifactId>
             <version>${querydsl.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.mysema.querydsl</groupId>
+            <artifactId>querydsl-apt</artifactId>
+            <version>3.6.6</version>
+        </dependency>
 
     </dependencies>
 
     <build>
         <plugins>
             <plugin>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>2.3.2</version>
-                <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
-                </configuration>
+                <groupId>com.mysema.maven</groupId>
+                <artifactId>apt-maven-plugin</artifactId>
+                <version>1.1.3</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>process</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>target/generated-sources/java</outputDirectory>
+                            <processor>org.springframework.data.mongodb.repository.support.MongoAnnotationProcessor</processor>
+                        </configuration>
+                    </execution>
+                </executions>
             </plugin>
         </plugins>
     </build>

spring-data-mongodb/src/main/java/org/baeldung/model/QUser.java

@@ -1,20 +0,0 @@
-package org.baeldung.model;
-
-import javax.annotation.Generated;
-
-import com.mysema.query.types.path.EntityPathBase;
-import com.mysema.query.types.path.StringPath;
-
-@Generated("com.mysema.query.codegen.EntitySerializer")
-public class QUser extends EntityPathBase<User> {
-
-    private static final long serialVersionUID = 1L;
-
-    public static final QUser user = new QUser("user");
-
-    public final StringPath name = createString("name");
-
-    public QUser(String variable) {
-        super(User.class, variable);
-    }
-}

spring-data-mongodb/src/main/java/org/baeldung/model/User.java

@@ -3,6 +3,9 @@ package org.baeldung.model;
 import org.springframework.data.annotation.Id;
 import org.springframework.data.mongodb.core.mapping.Document;
 
+import com.mysema.query.annotations.QueryEntity;
+
+@QueryEntity 
 @Document
 public class User {