README.md

quick start

prepare data

Object data = Map.of(
    "reports", List.of(
        Map.of(
            "id", 1,
            "title", "title",
            "relatedDataModelIds", List.of(1, 2, 3)
        )
    ),
    "dataModels", List.of(
        Map.of(
            "status", "extract",
            "relatedDataConnectionIds", List.of(1, 2, "123")
        )
    )
);

Define your Checker by compose the primitive checker

Chkr checker = Mixin(
    Obj(
        "reports", Arr(Obj(
            "id", Num,
            "title", Str,
            "relatedDataModelIds", Arr(Num)
        ))
    ),
    Or(
        Obj(
            "dataModels", Arr(Obj(
                "status", OrVal("extract", "direct"),
                "relatedDataConnectionIds", Arr(StrictNum)
            ))
        ),
        Obj(
            "dataModels", Arr(Obj(
                "status", OrVal("extract", "direct"),
                "relatedTableExtractIds", Arr(Num)
            ))
        )
    )
);

and run the check:

Object after = checker.check(data);
System.out.println(JSON.toJSONString(after, true));

If the data dosen't match your checker , exception messages will show the mistake precisely~

primitive checker

ChkrName	Description
Null	target field shoud be null
Any	target field shoud not be null
Num	target field shoud like Number, for example: 123, "123"
StrictNum	target field shoud be Number
Str	target field shoud be String
Bool	target field shoud like Boolean, for example: true , flase , "True", "true", "fAlsE"
StrictBool	target field shoud be Boolean
Mixin
Or
Obj
Arr
Optional
OrVal