com.api.jsonata4java.expressions.utils

Class JsonMergeUtils

java.lang.Object

com.api.jsonata4java.expressions.utils.JsonMergeUtils

public class JsonMergeUtils
extends Object

A utility for merging arbitrary JSON trees. Used during default state generation to combine explicit and implicit default values where necessary.

Constructor Summary

Constructors

Constructor and Description
JsonMergeUtils()

Method Summary

Modifier and Type	Method and Description
static com.fasterxml.jackson.databind.JsonNode	merge(com.fasterxml.jackson.databind.JsonNode x, com.fasterxml.jackson.databind.JsonNode y) Returns x "merged into" y If x is null (java null, not JSON null!), return y If y is (java null, not JSON null!), return x If both x and y are primitive (including JSON null!), return x (i.e.

Methods inherited from class java.lang.Object

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

Constructor Detail

JsonMergeUtils

public JsonMergeUtils()

Method Detail

merge

public static com.fasterxml.jackson.databind.JsonNode merge(com.fasterxml.jackson.databind.JsonNode x,
                                                            com.fasterxml.jackson.databind.JsonNode y)

Returns x "merged into" y If x is null (java null, not JSON null!), return y If y is (java null, not JSON null!), return x If both x and y are primitive (including JSON null!), return x (i.e. values in x take precedence over those in y) If x and y are of different types, return x If x and y are both objects, merge each field of x and y If an array field is set in both x and y, merge will be run on each element in turn. the length of the returned array will be max( length(x), length(y) ) See src/test/resources/JsonMergeUtilsTest.json for examples.

Parameters:

from - Json object

to - Json object

Returns:

merged Json object