Package com.bazaarvoice.jolt

Class Diffy

  • Direct Known Subclasses:
    ArrayOrderObliviousDiffy
    public class Diffy
extends java.lang.Object
    JSON Diff tool that will walk two "JSON" objects simultaneously and identify mismatches. Algorithm : 1) make a copy of both input objects 2) walk both objects and _remove_ items that match 3) return what is left of the two objects in the Result In the case a full / "sucessful" match, Diffy returns a Result object with isEmpty() == true.

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      static class  Diffy.Result
      Contains the unmatched fields from the Diffy operation.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private JsonUtil jsonUtil  

    • Constructor Summary

      Constructors 
      Constructor Description
      Diffy()  
      Diffy​(JsonUtil jsonUtil)
      Pass in a custom jsonUtil to use for the cloneJson method.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      Diffy.Result diff​(java.lang.Object expected, java.lang.Object actual)  
      protected Diffy.Result diffHelper​(java.lang.Object expected, java.lang.Object actual)  
      protected Diffy.Result diffList​(java.util.List<java.lang.Object> expected, java.util.List<java.lang.Object> actual)  
      protected Diffy.Result diffMap​(java.util.Map<java.lang.String,​java.lang.Object> expected, java.util.Map<java.lang.String,​java.lang.Object> actual)  
      protected Diffy.Result diffScalar​(java.lang.Object expected, java.lang.Object actual)  
      protected boolean scalarEquals​(java.lang.Object expected, java.lang.Object actual)
      Allow subclasses to handle things like Long 0 versus Int 0.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • jsonUtil

        private final JsonUtil jsonUtil

    • Constructor Detail

      • Diffy

        public Diffy()

      • Diffy

        public Diffy​(JsonUtil jsonUtil)
        Pass in a custom jsonUtil to use for the cloneJson method.

    • Method Detail

      • diff

        public Diffy.Result diff​(java.lang.Object expected,
                         java.lang.Object actual)

      • diffHelper

        protected Diffy.Result diffHelper​(java.lang.Object expected,
                                  java.lang.Object actual)

      • diffMap

        protected Diffy.Result diffMap​(java.util.Map<java.lang.String,​java.lang.Object> expected,
                               java.util.Map<java.lang.String,​java.lang.Object> actual)

      • diffList

        protected Diffy.Result diffList​(java.util.List<java.lang.Object> expected,
                                java.util.List<java.lang.Object> actual)

      • diffScalar

        protected Diffy.Result diffScalar​(java.lang.Object expected,
                                  java.lang.Object actual)

      • scalarEquals

        protected boolean scalarEquals​(java.lang.Object expected,
                               java.lang.Object actual)
        Allow subclasses to handle things like Long 0 versus Int 0. They should be the same, but the .equals doesn't handle it.