Map, which contains biomes, which contain landforms, which contain tiles












2












$begingroup$


I am trying to model this:




  • a Map can have multiple child of type Biomes and no parent

  • a Biome can have multiple child of type Landforms and a Map as its parent

  • a Landform can have multiple child of type Tiles and a Biome as its parent

  • a Tile has no child and a Landform as its parent


I want it to be generic so I can easily add new links to the chain (like adding a new kind of section between Biome and Landform for example). Here is the less ugly solution I have for now :



public class RootSection<T, TChild> : Section<T>
where T : Section<T>
where TChild : Section<TChild>
{
public List<TChild> ChildSection { get; } // duplicate
}

public class MiddleSection<T, TChild, TParent> : Section<T>
where T : Section<T>
where TChild : Section<TChild>
where TParent : Section<TParent>
{
public List<TChild> ChildSection { get; } // duplicate
public TParent Parent { get; } // duplicate
}

public class BottomSection<T, TParent> : Section<T>
where T : Section<T>
where TParent : Section<TParent>
{
public TParent Parent { get; } // duplicate
}

public class Section<T>
where T : Section<T>
{
List<T> AdjacentSections { get; }
}

public class Map : RootSection<Map, Biome> { } // (T, TChild)
public class Biome : MiddleSection<Biome, Landform, Map> { } // (T, TChild, TParent)
public class Landform : MiddleSection<Landform, Tile, Biome> { } // (T, TChild, TParent)
public class Tile : BottomSection<Tile, Landform> { } // (T, TParent)


As you can see, there is already duplicate code and I can't think of a solution to get rid of this issue. I feel like I am either missing something obvious or over-complexifying the problem. I also feel like this is close to a classic data structure which I ignore the name preventing me from searching for inspiration on the net.



How can I rewrite this code to look cleaner ? Am I right to think it's close to a well known data structure ?










share|improve this question









New contributor




BenH is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$

















    2












    $begingroup$


    I am trying to model this:




    • a Map can have multiple child of type Biomes and no parent

    • a Biome can have multiple child of type Landforms and a Map as its parent

    • a Landform can have multiple child of type Tiles and a Biome as its parent

    • a Tile has no child and a Landform as its parent


    I want it to be generic so I can easily add new links to the chain (like adding a new kind of section between Biome and Landform for example). Here is the less ugly solution I have for now :



    public class RootSection<T, TChild> : Section<T>
    where T : Section<T>
    where TChild : Section<TChild>
    {
    public List<TChild> ChildSection { get; } // duplicate
    }

    public class MiddleSection<T, TChild, TParent> : Section<T>
    where T : Section<T>
    where TChild : Section<TChild>
    where TParent : Section<TParent>
    {
    public List<TChild> ChildSection { get; } // duplicate
    public TParent Parent { get; } // duplicate
    }

    public class BottomSection<T, TParent> : Section<T>
    where T : Section<T>
    where TParent : Section<TParent>
    {
    public TParent Parent { get; } // duplicate
    }

    public class Section<T>
    where T : Section<T>
    {
    List<T> AdjacentSections { get; }
    }

    public class Map : RootSection<Map, Biome> { } // (T, TChild)
    public class Biome : MiddleSection<Biome, Landform, Map> { } // (T, TChild, TParent)
    public class Landform : MiddleSection<Landform, Tile, Biome> { } // (T, TChild, TParent)
    public class Tile : BottomSection<Tile, Landform> { } // (T, TParent)


    As you can see, there is already duplicate code and I can't think of a solution to get rid of this issue. I feel like I am either missing something obvious or over-complexifying the problem. I also feel like this is close to a classic data structure which I ignore the name preventing me from searching for inspiration on the net.



    How can I rewrite this code to look cleaner ? Am I right to think it's close to a well known data structure ?










    share|improve this question









    New contributor




    BenH is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.







    $endgroup$















      2












      2








      2





      $begingroup$


      I am trying to model this:




      • a Map can have multiple child of type Biomes and no parent

      • a Biome can have multiple child of type Landforms and a Map as its parent

      • a Landform can have multiple child of type Tiles and a Biome as its parent

      • a Tile has no child and a Landform as its parent


      I want it to be generic so I can easily add new links to the chain (like adding a new kind of section between Biome and Landform for example). Here is the less ugly solution I have for now :



      public class RootSection<T, TChild> : Section<T>
      where T : Section<T>
      where TChild : Section<TChild>
      {
      public List<TChild> ChildSection { get; } // duplicate
      }

      public class MiddleSection<T, TChild, TParent> : Section<T>
      where T : Section<T>
      where TChild : Section<TChild>
      where TParent : Section<TParent>
      {
      public List<TChild> ChildSection { get; } // duplicate
      public TParent Parent { get; } // duplicate
      }

      public class BottomSection<T, TParent> : Section<T>
      where T : Section<T>
      where TParent : Section<TParent>
      {
      public TParent Parent { get; } // duplicate
      }

      public class Section<T>
      where T : Section<T>
      {
      List<T> AdjacentSections { get; }
      }

      public class Map : RootSection<Map, Biome> { } // (T, TChild)
      public class Biome : MiddleSection<Biome, Landform, Map> { } // (T, TChild, TParent)
      public class Landform : MiddleSection<Landform, Tile, Biome> { } // (T, TChild, TParent)
      public class Tile : BottomSection<Tile, Landform> { } // (T, TParent)


      As you can see, there is already duplicate code and I can't think of a solution to get rid of this issue. I feel like I am either missing something obvious or over-complexifying the problem. I also feel like this is close to a classic data structure which I ignore the name preventing me from searching for inspiration on the net.



      How can I rewrite this code to look cleaner ? Am I right to think it's close to a well known data structure ?










      share|improve this question









      New contributor




      BenH is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.







      $endgroup$




      I am trying to model this:




      • a Map can have multiple child of type Biomes and no parent

      • a Biome can have multiple child of type Landforms and a Map as its parent

      • a Landform can have multiple child of type Tiles and a Biome as its parent

      • a Tile has no child and a Landform as its parent


      I want it to be generic so I can easily add new links to the chain (like adding a new kind of section between Biome and Landform for example). Here is the less ugly solution I have for now :



      public class RootSection<T, TChild> : Section<T>
      where T : Section<T>
      where TChild : Section<TChild>
      {
      public List<TChild> ChildSection { get; } // duplicate
      }

      public class MiddleSection<T, TChild, TParent> : Section<T>
      where T : Section<T>
      where TChild : Section<TChild>
      where TParent : Section<TParent>
      {
      public List<TChild> ChildSection { get; } // duplicate
      public TParent Parent { get; } // duplicate
      }

      public class BottomSection<T, TParent> : Section<T>
      where T : Section<T>
      where TParent : Section<TParent>
      {
      public TParent Parent { get; } // duplicate
      }

      public class Section<T>
      where T : Section<T>
      {
      List<T> AdjacentSections { get; }
      }

      public class Map : RootSection<Map, Biome> { } // (T, TChild)
      public class Biome : MiddleSection<Biome, Landform, Map> { } // (T, TChild, TParent)
      public class Landform : MiddleSection<Landform, Tile, Biome> { } // (T, TChild, TParent)
      public class Tile : BottomSection<Tile, Landform> { } // (T, TParent)


      As you can see, there is already duplicate code and I can't think of a solution to get rid of this issue. I feel like I am either missing something obvious or over-complexifying the problem. I also feel like this is close to a classic data structure which I ignore the name preventing me from searching for inspiration on the net.



      How can I rewrite this code to look cleaner ? Am I right to think it's close to a well known data structure ?







      c# object-oriented generics






      share|improve this question









      New contributor




      BenH is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question









      New contributor




      BenH is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question








      edited 4 mins ago









      200_success

      129k15153417




      129k15153417






      New contributor




      BenH is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked 21 hours ago









      BenHBenH

      1111




      1111




      New contributor




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      New contributor





      BenH is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      BenH is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






















          1 Answer
          1






          active

          oldest

          votes


















          3












          $begingroup$


          I want it to be generic so I can easily add new links to the chain
          (like adding a new kind of section between Biome and Landform for
          example)




          Generics work fine for simple generic data structures (like a List). Your "generic" data structure is actually a very special one which will not be used outside of your model. It is more a try to extract the common parts of your model to a generic structure which may be useful, but based on your question I can not see the value in your case.



          In my experience, data stuctures with multiple generic types, which has contraints to other generic types, are hard to understand and make the code more complicated.



          In your case, I would just give generics up and write the data structure down as it is:



          public class Map 
          {
          public List<Biome> Biomes { get; } = new List<Biome>();
          public List<Map> AdjacentMaps { get; } = new List<Map>();
          }

          public class Biome
          {
          public Map Map {get; }
          public List<Landform> Landforms { get; } = new List<Landform>();
          public List<Biome> AdjacentBiomes { get; } = new List<Biome>();
          }

          public class Landform
          {
          public Biome Biome {get; }
          public List<Tile> Tiles { get; } = new List<Tile>();
          public List<Landform> AdjacentLandforms { get; } = new List<Landform>();
          }

          public class Tile
          {
          public Landform Landform {get; }
          public List<Tile> AdjacentTiles { get; } = new List<Tile>();
          }


          Much more readable! The properties has more descriptive names and it needs a minute to extend this hierachical data structure with other types.






          share|improve this answer









          $endgroup$













          • $begingroup$
            Besides readable, it is by far more understandable. QUESTION: Parent / Child idea is transformed to Adjacent. In as much as "A Tile has no child", for example, is this bad? Is the P/C relationship explicitly relevant for other code? If this is all about composition - A Biome is composed of LandTypes, then I think "Parent/Child" concept is actually misleading.
            $endgroup$
            – radarbob
            5 hours ago













          Your Answer





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          1 Answer
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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

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          active

          oldest

          votes









          3












          $begingroup$


          I want it to be generic so I can easily add new links to the chain
          (like adding a new kind of section between Biome and Landform for
          example)




          Generics work fine for simple generic data structures (like a List). Your "generic" data structure is actually a very special one which will not be used outside of your model. It is more a try to extract the common parts of your model to a generic structure which may be useful, but based on your question I can not see the value in your case.



          In my experience, data stuctures with multiple generic types, which has contraints to other generic types, are hard to understand and make the code more complicated.



          In your case, I would just give generics up and write the data structure down as it is:



          public class Map 
          {
          public List<Biome> Biomes { get; } = new List<Biome>();
          public List<Map> AdjacentMaps { get; } = new List<Map>();
          }

          public class Biome
          {
          public Map Map {get; }
          public List<Landform> Landforms { get; } = new List<Landform>();
          public List<Biome> AdjacentBiomes { get; } = new List<Biome>();
          }

          public class Landform
          {
          public Biome Biome {get; }
          public List<Tile> Tiles { get; } = new List<Tile>();
          public List<Landform> AdjacentLandforms { get; } = new List<Landform>();
          }

          public class Tile
          {
          public Landform Landform {get; }
          public List<Tile> AdjacentTiles { get; } = new List<Tile>();
          }


          Much more readable! The properties has more descriptive names and it needs a minute to extend this hierachical data structure with other types.






          share|improve this answer









          $endgroup$













          • $begingroup$
            Besides readable, it is by far more understandable. QUESTION: Parent / Child idea is transformed to Adjacent. In as much as "A Tile has no child", for example, is this bad? Is the P/C relationship explicitly relevant for other code? If this is all about composition - A Biome is composed of LandTypes, then I think "Parent/Child" concept is actually misleading.
            $endgroup$
            – radarbob
            5 hours ago


















          3












          $begingroup$


          I want it to be generic so I can easily add new links to the chain
          (like adding a new kind of section between Biome and Landform for
          example)




          Generics work fine for simple generic data structures (like a List). Your "generic" data structure is actually a very special one which will not be used outside of your model. It is more a try to extract the common parts of your model to a generic structure which may be useful, but based on your question I can not see the value in your case.



          In my experience, data stuctures with multiple generic types, which has contraints to other generic types, are hard to understand and make the code more complicated.



          In your case, I would just give generics up and write the data structure down as it is:



          public class Map 
          {
          public List<Biome> Biomes { get; } = new List<Biome>();
          public List<Map> AdjacentMaps { get; } = new List<Map>();
          }

          public class Biome
          {
          public Map Map {get; }
          public List<Landform> Landforms { get; } = new List<Landform>();
          public List<Biome> AdjacentBiomes { get; } = new List<Biome>();
          }

          public class Landform
          {
          public Biome Biome {get; }
          public List<Tile> Tiles { get; } = new List<Tile>();
          public List<Landform> AdjacentLandforms { get; } = new List<Landform>();
          }

          public class Tile
          {
          public Landform Landform {get; }
          public List<Tile> AdjacentTiles { get; } = new List<Tile>();
          }


          Much more readable! The properties has more descriptive names and it needs a minute to extend this hierachical data structure with other types.






          share|improve this answer









          $endgroup$













          • $begingroup$
            Besides readable, it is by far more understandable. QUESTION: Parent / Child idea is transformed to Adjacent. In as much as "A Tile has no child", for example, is this bad? Is the P/C relationship explicitly relevant for other code? If this is all about composition - A Biome is composed of LandTypes, then I think "Parent/Child" concept is actually misleading.
            $endgroup$
            – radarbob
            5 hours ago
















          3












          3








          3





          $begingroup$


          I want it to be generic so I can easily add new links to the chain
          (like adding a new kind of section between Biome and Landform for
          example)




          Generics work fine for simple generic data structures (like a List). Your "generic" data structure is actually a very special one which will not be used outside of your model. It is more a try to extract the common parts of your model to a generic structure which may be useful, but based on your question I can not see the value in your case.



          In my experience, data stuctures with multiple generic types, which has contraints to other generic types, are hard to understand and make the code more complicated.



          In your case, I would just give generics up and write the data structure down as it is:



          public class Map 
          {
          public List<Biome> Biomes { get; } = new List<Biome>();
          public List<Map> AdjacentMaps { get; } = new List<Map>();
          }

          public class Biome
          {
          public Map Map {get; }
          public List<Landform> Landforms { get; } = new List<Landform>();
          public List<Biome> AdjacentBiomes { get; } = new List<Biome>();
          }

          public class Landform
          {
          public Biome Biome {get; }
          public List<Tile> Tiles { get; } = new List<Tile>();
          public List<Landform> AdjacentLandforms { get; } = new List<Landform>();
          }

          public class Tile
          {
          public Landform Landform {get; }
          public List<Tile> AdjacentTiles { get; } = new List<Tile>();
          }


          Much more readable! The properties has more descriptive names and it needs a minute to extend this hierachical data structure with other types.






          share|improve this answer









          $endgroup$




          I want it to be generic so I can easily add new links to the chain
          (like adding a new kind of section between Biome and Landform for
          example)




          Generics work fine for simple generic data structures (like a List). Your "generic" data structure is actually a very special one which will not be used outside of your model. It is more a try to extract the common parts of your model to a generic structure which may be useful, but based on your question I can not see the value in your case.



          In my experience, data stuctures with multiple generic types, which has contraints to other generic types, are hard to understand and make the code more complicated.



          In your case, I would just give generics up and write the data structure down as it is:



          public class Map 
          {
          public List<Biome> Biomes { get; } = new List<Biome>();
          public List<Map> AdjacentMaps { get; } = new List<Map>();
          }

          public class Biome
          {
          public Map Map {get; }
          public List<Landform> Landforms { get; } = new List<Landform>();
          public List<Biome> AdjacentBiomes { get; } = new List<Biome>();
          }

          public class Landform
          {
          public Biome Biome {get; }
          public List<Tile> Tiles { get; } = new List<Tile>();
          public List<Landform> AdjacentLandforms { get; } = new List<Landform>();
          }

          public class Tile
          {
          public Landform Landform {get; }
          public List<Tile> AdjacentTiles { get; } = new List<Tile>();
          }


          Much more readable! The properties has more descriptive names and it needs a minute to extend this hierachical data structure with other types.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 16 hours ago









          JanDotNetJanDotNet

          6,8681339




          6,8681339












          • $begingroup$
            Besides readable, it is by far more understandable. QUESTION: Parent / Child idea is transformed to Adjacent. In as much as "A Tile has no child", for example, is this bad? Is the P/C relationship explicitly relevant for other code? If this is all about composition - A Biome is composed of LandTypes, then I think "Parent/Child" concept is actually misleading.
            $endgroup$
            – radarbob
            5 hours ago




















          • $begingroup$
            Besides readable, it is by far more understandable. QUESTION: Parent / Child idea is transformed to Adjacent. In as much as "A Tile has no child", for example, is this bad? Is the P/C relationship explicitly relevant for other code? If this is all about composition - A Biome is composed of LandTypes, then I think "Parent/Child" concept is actually misleading.
            $endgroup$
            – radarbob
            5 hours ago


















          $begingroup$
          Besides readable, it is by far more understandable. QUESTION: Parent / Child idea is transformed to Adjacent. In as much as "A Tile has no child", for example, is this bad? Is the P/C relationship explicitly relevant for other code? If this is all about composition - A Biome is composed of LandTypes, then I think "Parent/Child" concept is actually misleading.
          $endgroup$
          – radarbob
          5 hours ago






          $begingroup$
          Besides readable, it is by far more understandable. QUESTION: Parent / Child idea is transformed to Adjacent. In as much as "A Tile has no child", for example, is this bad? Is the P/C relationship explicitly relevant for other code? If this is all about composition - A Biome is composed of LandTypes, then I think "Parent/Child" concept is actually misleading.
          $endgroup$
          – radarbob
          5 hours ago












          BenH is a new contributor. Be nice, and check out our Code of Conduct.










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          BenH is a new contributor. Be nice, and check out our Code of Conduct.
















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