org.eclipse.scada.base.json

Interface VariantJson

public interface VariantJson

Variant JSON encoding

The variant is encoded as JSON object with two fields: type and value. Type contains the type string from VariantType (except VariantType.UNKNOWN. Value contains the data encoded in the type of the variant. If the type is null then the field is set to null for when serialized, but when deserialized the value is ignored.

Deserialization

For the deserialization there are several options. The variant can be encoded as primitive (including null). So the type will be guessed by the value that is coming in, which might not always be what you expect. If it is a string, the type prefix handling of VariantEditor will be used (e.g. INT32#1).

In addition it can be provided as it is serialized (with type and value fields.

Author:

Jens Reimann

Field Summary

Fields

Modifier and Type	Field and Description
static String	FIELD_TYPE
static String	FIELD_VALUE

Field Detail

FIELD_TYPE

static final String FIELD_TYPE

See Also:

Constant Field Values

FIELD_VALUE

static final String FIELD_VALUE

See Also:

Constant Field Values