How to set AncestorKey to Entity when writing to Datastore from Apache Beam in Java?











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I'd like to store two kinds of entities linked by a composition.



A User have multiple Order but I don't know how to set the relationship such as explained in the doc for AppEngine.



    Key.Builder keyBuilder = DatastoreHelper.makeKey(kind, new String(order.getOrderId()));

    Entity.Builder entityBuilder = Entity.newBuilder();



    entityBuilder.setKey(keyBuilder);



    entityBuilder.putProperties("order_id", DatastoreHelper.makeValue(order.getOrderId()).build());

    entityBuilder.putProperties("user_id", DatastoreHelper.makeValue(order.getUserId()).build());



    return entityBuilder.build();


I'd like to use a function like setAncestor() or addAncestor() any hints ?






java google-cloud-datastore google-cloud-dataflow apache-beam







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    up vote
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    down vote

    favorite












    I'd like to store two kinds of entities linked by a composition.



    A User have multiple Order but I don't know how to set the relationship such as explained in the doc for AppEngine.



        Key.Builder keyBuilder = DatastoreHelper.makeKey(kind, new String(order.getOrderId()));
    
    Entity.Builder entityBuilder = Entity.newBuilder();
    

    
    entityBuilder.setKey(keyBuilder);
    

    
    entityBuilder.putProperties("order_id", DatastoreHelper.makeValue(order.getOrderId()).build());
    
    entityBuilder.putProperties("user_id", DatastoreHelper.makeValue(order.getUserId()).build());
    

    
    return entityBuilder.build();


    I'd like to use a function like setAncestor() or addAncestor() any hints ?






    java google-cloud-datastore google-cloud-dataflow apache-beam







    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I'd like to store two kinds of entities linked by a composition.



      A User have multiple Order but I don't know how to set the relationship such as explained in the doc for AppEngine.



          Key.Builder keyBuilder = DatastoreHelper.makeKey(kind, new String(order.getOrderId()));
      
    Entity.Builder entityBuilder = Entity.newBuilder();
      

      
    entityBuilder.setKey(keyBuilder);
      

      
    entityBuilder.putProperties("order_id", DatastoreHelper.makeValue(order.getOrderId()).build());
      
    entityBuilder.putProperties("user_id", DatastoreHelper.makeValue(order.getUserId()).build());
      

      
    return entityBuilder.build();


      I'd like to use a function like setAncestor() or addAncestor() any hints ?






      java google-cloud-datastore google-cloud-dataflow apache-beam







      share|improve this question













      I'd like to store two kinds of entities linked by a composition.



      A User have multiple Order but I don't know how to set the relationship such as explained in the doc for AppEngine.



          Key.Builder keyBuilder = DatastoreHelper.makeKey(kind, new String(order.getOrderId()));
      
    Entity.Builder entityBuilder = Entity.newBuilder();
      

      
    entityBuilder.setKey(keyBuilder);
      

      
    entityBuilder.putProperties("order_id", DatastoreHelper.makeValue(order.getOrderId()).build());
      
    entityBuilder.putProperties("user_id", DatastoreHelper.makeValue(order.getUserId()).build());
      

      
    return entityBuilder.build();


      I'd like to use a function like setAncestor() or addAncestor() any hints ?






      java google-cloud-datastore google-cloud-dataflow apache-beam




      java google-cloud-datastore google-cloud-dataflow apache-beam






      share|improve this question













      share|improve this question











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      asked Nov 8 at 11:07









      vdolez

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          The ancestor relationship is on the key of the entity not the entity itself. So you can either pass the parent key to DatastoreHelper.makeKey or use addAncestors on the key builder like you referenced in the doc for App Engine






          share|improve this answer





















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            up vote
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            The ancestor relationship is on the key of the entity not the entity itself. So you can either pass the parent key to DatastoreHelper.makeKey or use addAncestors on the key builder like you referenced in the doc for App Engine






            share|improve this answer

























              up vote
              0
              down vote













              The ancestor relationship is on the key of the entity not the entity itself. So you can either pass the parent key to DatastoreHelper.makeKey or use addAncestors on the key builder like you referenced in the doc for App Engine






              share|improve this answer























                up vote
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                down vote










                up vote
                0
                down vote









                The ancestor relationship is on the key of the entity not the entity itself. So you can either pass the parent key to DatastoreHelper.makeKey or use addAncestors on the key builder like you referenced in the doc for App Engine






                share|improve this answer












                The ancestor relationship is on the key of the entity not the entity itself. So you can either pass the parent key to DatastoreHelper.makeKey or use addAncestors on the key builder like you referenced in the doc for App Engine







                share|improve this answer












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                answered Nov 9 at 21:01









                Jim Morrison

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