Package com.github.fge.jsonschema.core.keyword.syntax.checkers

Keyword syntax checkers

See:
Description

Interface Summary

SyntaxChecker

Interface for a syntax checker

Class Summary

AbstractSyntaxChecker

Base abstract syntax checker

Package com.github.fge.jsonschema.core.keyword.syntax.checkers Description

Keyword syntax checkers

Syntax checkers play a critical role in the validation process. If syntax validation checking fails, the validation process stops, and syntax validation depends on these checkers.

A successful syntax validation ensures that digesters and validators will not see malformed inputs, and as such they do not even need to care whether their input is valid -- they know that it is.

Even though you can turn it off, it is not recommended. Take this schema as an example:

     {
         "$ref": "#/properties",
         "properties": {
             "type": { "type": "string" }
         }
     }
 

This schema is syntactically valid; however, if someone tries and validates against this schema, the JSON Reference leads to a schema which is not valid; syntax checking will detect this since it takes place right after JSON Reference processing. If there were no syntax checking, the matching digester for the type keyword would throw a NullPointerException.