java - Multi level polymorphism in Jackson -


i'd able deserialize json objects having more 1 discriminator column. should allow have set of classes map polymorphic json, lot of possible combinations. wrote hierarchy of classes , used annotations described in documentation. trying deserialize using generic class causes error: seems jackson not walk through entire tree of classes, stops on first level, reading annotations of top class. doing wrong or jackson limitation?

for example, consider following code:

import com.fasterxml.jackson.annotation.jsonsubtypes; import com.fasterxml.jackson.annotation.jsontypeinfo; import com.fasterxml.jackson.databind.jsonmappingexception; import com.fasterxml.jackson.databind.objectmapper; import java.io.ioexception;  import static com.fasterxml.jackson.annotation.jsontypeinfo.as.property; import static com.fasterxml.jackson.annotation.jsontypeinfo.id.name;  @jsontypeinfo(use = name, include = property, property = "animal") @jsonsubtypes({         @jsonsubtypes.type(value = dog.class, name = "dog"),         @jsonsubtypes.type(value = cat.class, name = "cat") }) abstract class animal {  }  @jsontypeinfo(use = name, include = property, property = "size") @jsonsubtypes({         @jsonsubtypes.type(value = bigdog.class, name = "big"),         @jsonsubtypes.type(value = smalldog.class, name = "small") }) abstract class dog extends animal {  }  class bigdog extends dog {  }  class smalldog extends dog {  }  @jsontypeinfo(use = name, include = property, property = "size") @jsonsubtypes({         @jsonsubtypes.type(value = bigcat.class, name = "big"),         @jsonsubtypes.type(value = smallcat.class, name = "small") }) abstract class cat extends animal { }  class bigcat extends cat {  }  class smallcat extends cat {  }  public class polymorphism {      public static void main(string args[]) throws ioexception {          objectmapper objectmapper = new objectmapper();          try {             animal animal1 = objectmapper.readvalue("{\"animal\":\"dog\",\"size\":\"big}", animal.class);             system.out.println("this " + animal1.getclass().getsimplename());         } catch (jsonmappingexception e) {             system.out.println(e.getmessage());         }          try {             animal animal2 = objectmapper.readvalue("{\"animal\":\"cat\",\"size\":\"big}", animal.class);             system.out.println("this " + animal2.getclass().getsimplename());         } catch (jsonmappingexception e) {             system.out.println(e.getmessage());         }          try {             animal animal3 = objectmapper.readvalue("{\"animal\":\"dog\",\"size\":\"small}", animal.class);             system.out.println("this " + animal3.getclass().getsimplename());         } catch (jsonmappingexception e) {             system.out.println(e.getmessage());         }          try {             animal animal4 = objectmapper.readvalue("{\"animal\":\"cat\",\"size\":\"small}", animal.class);             system.out.println("this " + animal4.getclass().getsimplename());         } catch (jsonmappingexception e) {             system.out.println(e.getmessage());         }     } }

i expected obtain following objects: bigdog bigcat smalldog smallcat instead exception thrown.

can clarify if multi level polymorphysm supported jackson? and, if so, correct configuration?


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