Default Value

Description

This code sample shows how to fill the missing properties and/or items in the instance with default values given by default keyword in the schema.

By default the feature is disabled and the instance never be modified. The method withDefaultValues() in the interface ValidationConfig can be used to enable the feature.

ValidationConfig config = service.createValidationConfig();
config.withSchema(schema)
      .withProblemHandler(handler)
      .withDefaultValues(true);

// Creates a configured reader factory.
JsonReaderFactory readerFactory = service.createReaderFactory(config.getAsMap());

The input JSON instance shown below

{
    "color": {
        "r": 64,
        "g": 128,
        "b": 192
    },
    "point": [1, 2]
}

will be filled with the default values and modified to:

{
    "color": {
        "r": 64,
        "g": 128,
        "b": 192,
        "a": 255
    },
    "point": [1, 2, 0]
}

How to Build

Follow the instructions shown in README in the repository root.

How to Run

Navigate to the generated target or build directory.

$ ./run.sh point.schema.json point.json