private static JsonObject merge()

in src/main/java/org/apache/sling/feature/builder/BuilderUtil.java [716:746]
28 lines of code
7 McCabe index (conditional complexity)

    private static JsonObject merge(final JsonObject obj1, final JsonObject obj2) {
        JsonObjectBuilder builder = Json.createObjectBuilder();
        for (final Map.Entry<String, JsonValue> entry : obj1.entrySet()) {
            builder.add(entry.getKey(), entry.getValue());
        }
        for(final Map.Entry<String, JsonValue> entry : obj2.entrySet()) {
            if ( !obj1.containsKey(entry.getKey()) ) {
                builder.add(entry.getKey(), entry.getValue());
            } else {
                final JsonValue oldValue = obj1.get(entry.getKey());
                if ( oldValue.getValueType() != entry.getValue().getValueType() ) {
                    // new type wins
                    builder.add(entry.getKey(), entry.getValue());
                } else if ( oldValue.getValueType() == ValueType.ARRAY ) {
                    final JsonArrayBuilder arrayBuilder = Json.createArrayBuilder();

                    Stream.concat(
                        ((JsonArray) oldValue).stream(),
                        ((JsonArray)entry.getValue()).stream()
                    ).forEachOrdered(arrayBuilder::add);

                    builder.add(entry.getKey(), arrayBuilder.build());
                } else if ( oldValue.getValueType() == ValueType.OBJECT ) {
                    builder.add(entry.getKey(), merge((JsonObject)oldValue, (JsonObject)entry.getValue()));
                } else {
                    builder.add(entry.getKey(), entry.getValue());
                }
            }
        }
        return builder.build();
    }