slick many-to-many repo scala





.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}







0















these are random client and course repos



@Singleton
class CourseRepository @Inject()(dbConfigProvider: DatabaseConfigProvider)(implicit ec: ExecutionContext) {

// We want the JdbcProfile for this provider
val dbConfig = dbConfigProvider.get[JdbcProfile]

import dbConfig._
import profile.api._

class CourseTable(_tableTag: Tag) extends Table[Course](_tableTag, "course") {
def * = (courseId, name) <> ((Course.apply _).tupled, Course.unapply)

def ? = (Rep.Some(courseId), Rep.Some(name)).shaped.<>({ r => import r._; _1.map(_ => (Course.apply _).tupled((_1.get, _2.get))) }, (_: Any) => throw new Exception("Inserting into ? projection not supported."))

val courseId: Rep[Int] = column[Int]("course_id", O.PrimaryKey)
val name: Rep[String] = column[String]("name", O.Length(255, varying = true))
}

private val courses = TableQuery[CourseTable]

def create(course: Course) = db.run {
courses += course
}

def findById(courseId: Int): Future[Course] = db.run {
courses.filter(_.courseId === courseId).result.head
}

def createMany(courseList:Seq[Course]) = db.run{
courses ++= courseList
}

def list(): Future[Seq[Course]] = db.run {
courses.result
}
}

@Singleton
class ClientRepository @Inject()(dbConfigProvider: DatabaseConfigProvider)(implicit ec: ExecutionContext) {
// We want the JdbcProfile for this provider
private val dbConfig = dbConfigProvider.get[JdbcProfile]

import dbConfig._
import profile.api._

private class ClientTable(tag: Tag) extends Table[Client](tag, "client") {
def * = (userId, name) <> ((Client.apply _).tupled, Client.unapply)

def ? = (Rep.Some(userId), Rep.Some(name)).shaped.<>({ r => import r._; _1.map(_ => (Client.apply _).tupled((_1.get, _2.get))) }, (_: Any) => throw new Exception("Inserting into ? projection not supported."))

val userId: Rep[Int] = column[Int]("client_id", O.PrimaryKey, O.AutoInc)
val name: Rep[String] = column[String]("name", O.Length(255, varying = true))
}

private val people = TableQuery[ClientTable]

def create(client: Client) = db.run {
people += client
}

def findById(clientId: Int) = db.run {
people.filter(_.userId === clientId).result.head
}

def list(): Future[Seq[Client]] = db.run {
people.result


}
}



What my problem is, i have a 3rd table client_course, where i map many to many relation between these two tables, and to do join i have to access client table and course table, but my client_course repo is in another class and i cant simply access table from clientrepo or courserepo, so my question is, how do i write a client_course repo and access tables i need to do some join queries?



example



    for {
(client, course) <- clients join courses
} yield (client, course)


to do so i have to access clients and courses table, which are managed by other repos, should i simply put TableQuery for client and course in my client_course repo?



like so



  private val clientCourses = TableQuery[ClientCourse]
private val courses = TableQuery[Course]
private val clients = TableQuery[Client]









share|improve this question





























    0















    these are random client and course repos



    @Singleton
    class CourseRepository @Inject()(dbConfigProvider: DatabaseConfigProvider)(implicit ec: ExecutionContext) {

    // We want the JdbcProfile for this provider
    val dbConfig = dbConfigProvider.get[JdbcProfile]

    import dbConfig._
    import profile.api._

    class CourseTable(_tableTag: Tag) extends Table[Course](_tableTag, "course") {
    def * = (courseId, name) <> ((Course.apply _).tupled, Course.unapply)

    def ? = (Rep.Some(courseId), Rep.Some(name)).shaped.<>({ r => import r._; _1.map(_ => (Course.apply _).tupled((_1.get, _2.get))) }, (_: Any) => throw new Exception("Inserting into ? projection not supported."))

    val courseId: Rep[Int] = column[Int]("course_id", O.PrimaryKey)
    val name: Rep[String] = column[String]("name", O.Length(255, varying = true))
    }

    private val courses = TableQuery[CourseTable]

    def create(course: Course) = db.run {
    courses += course
    }

    def findById(courseId: Int): Future[Course] = db.run {
    courses.filter(_.courseId === courseId).result.head
    }

    def createMany(courseList:Seq[Course]) = db.run{
    courses ++= courseList
    }

    def list(): Future[Seq[Course]] = db.run {
    courses.result
    }
    }

    @Singleton
    class ClientRepository @Inject()(dbConfigProvider: DatabaseConfigProvider)(implicit ec: ExecutionContext) {
    // We want the JdbcProfile for this provider
    private val dbConfig = dbConfigProvider.get[JdbcProfile]

    import dbConfig._
    import profile.api._

    private class ClientTable(tag: Tag) extends Table[Client](tag, "client") {
    def * = (userId, name) <> ((Client.apply _).tupled, Client.unapply)

    def ? = (Rep.Some(userId), Rep.Some(name)).shaped.<>({ r => import r._; _1.map(_ => (Client.apply _).tupled((_1.get, _2.get))) }, (_: Any) => throw new Exception("Inserting into ? projection not supported."))

    val userId: Rep[Int] = column[Int]("client_id", O.PrimaryKey, O.AutoInc)
    val name: Rep[String] = column[String]("name", O.Length(255, varying = true))
    }

    private val people = TableQuery[ClientTable]

    def create(client: Client) = db.run {
    people += client
    }

    def findById(clientId: Int) = db.run {
    people.filter(_.userId === clientId).result.head
    }

    def list(): Future[Seq[Client]] = db.run {
    people.result


    }
    }



    What my problem is, i have a 3rd table client_course, where i map many to many relation between these two tables, and to do join i have to access client table and course table, but my client_course repo is in another class and i cant simply access table from clientrepo or courserepo, so my question is, how do i write a client_course repo and access tables i need to do some join queries?



    example



        for {
    (client, course) <- clients join courses
    } yield (client, course)


    to do so i have to access clients and courses table, which are managed by other repos, should i simply put TableQuery for client and course in my client_course repo?



    like so



      private val clientCourses = TableQuery[ClientCourse]
    private val courses = TableQuery[Course]
    private val clients = TableQuery[Client]









    share|improve this question

























      0












      0








      0








      these are random client and course repos



      @Singleton
      class CourseRepository @Inject()(dbConfigProvider: DatabaseConfigProvider)(implicit ec: ExecutionContext) {

      // We want the JdbcProfile for this provider
      val dbConfig = dbConfigProvider.get[JdbcProfile]

      import dbConfig._
      import profile.api._

      class CourseTable(_tableTag: Tag) extends Table[Course](_tableTag, "course") {
      def * = (courseId, name) <> ((Course.apply _).tupled, Course.unapply)

      def ? = (Rep.Some(courseId), Rep.Some(name)).shaped.<>({ r => import r._; _1.map(_ => (Course.apply _).tupled((_1.get, _2.get))) }, (_: Any) => throw new Exception("Inserting into ? projection not supported."))

      val courseId: Rep[Int] = column[Int]("course_id", O.PrimaryKey)
      val name: Rep[String] = column[String]("name", O.Length(255, varying = true))
      }

      private val courses = TableQuery[CourseTable]

      def create(course: Course) = db.run {
      courses += course
      }

      def findById(courseId: Int): Future[Course] = db.run {
      courses.filter(_.courseId === courseId).result.head
      }

      def createMany(courseList:Seq[Course]) = db.run{
      courses ++= courseList
      }

      def list(): Future[Seq[Course]] = db.run {
      courses.result
      }
      }

      @Singleton
      class ClientRepository @Inject()(dbConfigProvider: DatabaseConfigProvider)(implicit ec: ExecutionContext) {
      // We want the JdbcProfile for this provider
      private val dbConfig = dbConfigProvider.get[JdbcProfile]

      import dbConfig._
      import profile.api._

      private class ClientTable(tag: Tag) extends Table[Client](tag, "client") {
      def * = (userId, name) <> ((Client.apply _).tupled, Client.unapply)

      def ? = (Rep.Some(userId), Rep.Some(name)).shaped.<>({ r => import r._; _1.map(_ => (Client.apply _).tupled((_1.get, _2.get))) }, (_: Any) => throw new Exception("Inserting into ? projection not supported."))

      val userId: Rep[Int] = column[Int]("client_id", O.PrimaryKey, O.AutoInc)
      val name: Rep[String] = column[String]("name", O.Length(255, varying = true))
      }

      private val people = TableQuery[ClientTable]

      def create(client: Client) = db.run {
      people += client
      }

      def findById(clientId: Int) = db.run {
      people.filter(_.userId === clientId).result.head
      }

      def list(): Future[Seq[Client]] = db.run {
      people.result


      }
      }



      What my problem is, i have a 3rd table client_course, where i map many to many relation between these two tables, and to do join i have to access client table and course table, but my client_course repo is in another class and i cant simply access table from clientrepo or courserepo, so my question is, how do i write a client_course repo and access tables i need to do some join queries?



      example



          for {
      (client, course) <- clients join courses
      } yield (client, course)


      to do so i have to access clients and courses table, which are managed by other repos, should i simply put TableQuery for client and course in my client_course repo?



      like so



        private val clientCourses = TableQuery[ClientCourse]
      private val courses = TableQuery[Course]
      private val clients = TableQuery[Client]









      share|improve this question














      these are random client and course repos



      @Singleton
      class CourseRepository @Inject()(dbConfigProvider: DatabaseConfigProvider)(implicit ec: ExecutionContext) {

      // We want the JdbcProfile for this provider
      val dbConfig = dbConfigProvider.get[JdbcProfile]

      import dbConfig._
      import profile.api._

      class CourseTable(_tableTag: Tag) extends Table[Course](_tableTag, "course") {
      def * = (courseId, name) <> ((Course.apply _).tupled, Course.unapply)

      def ? = (Rep.Some(courseId), Rep.Some(name)).shaped.<>({ r => import r._; _1.map(_ => (Course.apply _).tupled((_1.get, _2.get))) }, (_: Any) => throw new Exception("Inserting into ? projection not supported."))

      val courseId: Rep[Int] = column[Int]("course_id", O.PrimaryKey)
      val name: Rep[String] = column[String]("name", O.Length(255, varying = true))
      }

      private val courses = TableQuery[CourseTable]

      def create(course: Course) = db.run {
      courses += course
      }

      def findById(courseId: Int): Future[Course] = db.run {
      courses.filter(_.courseId === courseId).result.head
      }

      def createMany(courseList:Seq[Course]) = db.run{
      courses ++= courseList
      }

      def list(): Future[Seq[Course]] = db.run {
      courses.result
      }
      }

      @Singleton
      class ClientRepository @Inject()(dbConfigProvider: DatabaseConfigProvider)(implicit ec: ExecutionContext) {
      // We want the JdbcProfile for this provider
      private val dbConfig = dbConfigProvider.get[JdbcProfile]

      import dbConfig._
      import profile.api._

      private class ClientTable(tag: Tag) extends Table[Client](tag, "client") {
      def * = (userId, name) <> ((Client.apply _).tupled, Client.unapply)

      def ? = (Rep.Some(userId), Rep.Some(name)).shaped.<>({ r => import r._; _1.map(_ => (Client.apply _).tupled((_1.get, _2.get))) }, (_: Any) => throw new Exception("Inserting into ? projection not supported."))

      val userId: Rep[Int] = column[Int]("client_id", O.PrimaryKey, O.AutoInc)
      val name: Rep[String] = column[String]("name", O.Length(255, varying = true))
      }

      private val people = TableQuery[ClientTable]

      def create(client: Client) = db.run {
      people += client
      }

      def findById(clientId: Int) = db.run {
      people.filter(_.userId === clientId).result.head
      }

      def list(): Future[Seq[Client]] = db.run {
      people.result


      }
      }



      What my problem is, i have a 3rd table client_course, where i map many to many relation between these two tables, and to do join i have to access client table and course table, but my client_course repo is in another class and i cant simply access table from clientrepo or courserepo, so my question is, how do i write a client_course repo and access tables i need to do some join queries?



      example



          for {
      (client, course) <- clients join courses
      } yield (client, course)


      to do so i have to access clients and courses table, which are managed by other repos, should i simply put TableQuery for client and course in my client_course repo?



      like so



        private val clientCourses = TableQuery[ClientCourse]
      private val courses = TableQuery[Course]
      private val clients = TableQuery[Client]






      scala join many-to-many slick






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 25 '18 at 7:01









      adamblumsteinadamblumstein

      204




      204
























          0






          active

          oldest

          votes












          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53465372%2fslick-many-to-many-repo-scala%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          0






          active

          oldest

          votes








          0






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Stack Overflow!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53465372%2fslick-many-to-many-repo-scala%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          這個網誌中的熱門文章

          Xamarin.form Move up view when keyboard appear

          Post-Redirect-Get with Spring WebFlux and Thymeleaf

          Anylogic : not able to use stopDelay()