Class Diffy

java.lang.Object

com.bazaarvoice.jolt.Diffy

Direct Known Subclasses:

ArrayOrderObliviousDiffy

public class Diffy
extends 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 final JsonUtil	jsonUtil

Constructor Summary

Constructors

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

Method Summary

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

Methods inherited from class Object

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

Field Details

jsonUtil

private final JsonUtil jsonUtil

Constructor Details

Diffy

public Diffy()

Diffy

public Diffy(JsonUtil jsonUtil)

Pass in a custom jsonUtil to use for the cloneJson method.

Method Details

diff

public Diffy.Result diff(Object expected,
 Object actual)

diffHelper

protected Diffy.Result diffHelper(Object expected,
 Object actual)

diffMap

protected Diffy.Result diffMap(Map<String,Object> expected,
 Map<String,Object> actual)

diffList

protected Diffy.Result diffList(List<Object> expected,
 List<Object> actual)

diffScalar

protected Diffy.Result diffScalar(Object expected,
 Object actual)

scalarEquals

protected boolean scalarEquals(Object expected,
 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.