com.querydsl.core.annotations

Annotation Type QueryProjection

@Documented
 @Target(value=CONSTRUCTOR)
 @Retention(value=RUNTIME)
public @interface QueryProjection

Annotation for APT based query type generation. Annotate constructors with this annotation.

Example

 class UserInfo {

     private String firstName, lastName;

      @QueryProjection
     public UserInfo(String firstName, String lastName) {
         this.firstName = firstName;
         this.lastName = lastName;
     }

     // getters and setters
 }
 

The projection can then be used like this

 
 QUser user = QUser.user;
 List <UserInfo> result = querydsl.from(user)
     .where(user.valid.eq(true))
     .select(new QUserInfo(user.firstName, user.lastName))
     .fetch();