# Constant Field Values

## org.relaxng.*

org.relaxng.datatype.Datatype
Modifier and Type
Constant Field
Value
`public static final int`
`ID_TYPE_ID`
`1`
`public static final int`
`ID_TYPE_IDREF`
`2`
`public static final int`
`ID_TYPE_IDREFS`
`3`
`public static final int`
`ID_TYPE_NULL`
`0`
org.relaxng.datatype.DatatypeException
Modifier and Type
Constant Field
Value
`public static final int`
`UNKNOWN`
`-1`