And the great thing about this is that the diff document can then be merged with the first JSON document that has been compared, yielding the second JSON document that has been compared. The approach described in the other post focus in producing a JSON document that represents the differences between the two documents that have been compared. Copy the original JSON data in the block on the left and new/modified data in the right block.
I recently put together another post describing how to compare JSON documents using JSON-P. JSoftwareLabs online json compare utility is used to find json differences online.
List < Difference > compare ( Object from, Object to, String path ) The value of the key can be primitive value, array, or an object, so we need to handle all those situations.Quoting the RFC 8259, the document that defines the JSON format (highlights are mine):Īn object is an unordered collection of zero or more name/value pairs, where a name is a string and a value is a string, number, boolean, null, object, or array.Īn array is an ordered sequence of zero or more values. To collect the differences between two keys we are going to implement compare method for a deep comparison of the values.
MySQL 8.0 also supports the JSON Merge Patch format defined in RFC 7396, using the JSONMERGEPATCH () function. This comparison method doesn’t take into account the order of the properties of objects, but it does take into account the order of the elements in arrays. The binary format is structured to enable the server to look up subobjects or nested values directly by key or array index without reading all values before or after them in the document. It will produce the following output: Entries only on left println ( "\n\nEntries in common\n-" ) difference. println ( "\n\nEntries differing\n-" ) difference. println ( "\n\nEntries only on right\n-" ) difference. println ( "Entries only on left\n-" ) difference.
difference ( leftFlatMap, rightFlatMap ) System.
flatten ( rightMap ) MapDifference difference = Maps. flatten ( leftMap ) Map rightFlatMap = FlatMapUtil.
It uses the JSON Pointer notation defined in the RFC 6901 for the keys, so I can easily locate the values. Import import import import import import import public final class FlatMapUtil JSONCompare, the advanced version of the legendary JSONLint validator, is a fully featured JSON tool that allows you to directly input and validate JSON code, upload and validate multiple (batch) JSON files simultaneously, and also compare (diff) and merge two JSON objects.