org.eel.kitchen.jsonschema.validator

Class JsonValidatorCache

java.lang.Object

org.eel.kitchen.jsonschema.validator.JsonValidatorCache

public final class JsonValidatorCache
extends Object

Cache for JSON validators

This class plays a critically important role in the performance of the whole validation process, since it is the class responsible for instantiating validators and caching them for future reuse.

As it uses a LoadingCache, it is totally thread safe and also very efficient.

See Also:

SchemaNode

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	JsonValidatorCache.FailingValidator Class instantiated when a schema node fails to pass ref resolution or syntax checking

Field Summary

Fields

Modifier and Type	Field and Description
private static JsonValidator	ALWAYS_TRUE
private LoadingCache<SchemaNode,JsonValidator>	cache Cache for all validators, even failing ones
private KeywordFactory	keywordFactory
private JsonResolver	resolver
private SyntaxValidator	syntaxValidator

Constructor Summary

Constructors

Constructor and Description
JsonValidatorCache(KeywordBundle bundle, SchemaRegistry registry) Constructor

Method Summary

Methods

Modifier and Type	Method and Description
private CacheLoader<SchemaNode,JsonValidator>	cacheLoader() The cache loader function
JsonValidator	getValidator(SchemaNode schemaNode)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ALWAYS_TRUE

private static final JsonValidator ALWAYS_TRUE

cache

private final LoadingCache<SchemaNode,JsonValidator> cache

Cache for all validators, even failing ones

See Also:

JsonValidatorCache.FailingValidator

resolver

private final JsonResolver resolver

syntaxValidator

private final SyntaxValidator syntaxValidator

keywordFactory

private final KeywordFactory keywordFactory

Constructor Detail

JsonValidatorCache

public JsonValidatorCache(KeywordBundle bundle,
                  SchemaRegistry registry)

Constructor

Instantiate the syntax validator, the keyword factory, the JSON ref resolver and the validator cache.

Parameters:

bundle - the keyword bundle

registry - the schema registry

Method Detail

getValidator

public JsonValidator getValidator(SchemaNode schemaNode)

cacheLoader

private CacheLoader<SchemaNode,JsonValidator> cacheLoader()

The cache loader function

The implemented CacheLoader.load(Object) method is the critical part. It will try and check if ref resolution succeeds, if so it checks the schema syntax, and finally it returns a validator.

If any of the preliminary checks fail, it returns a JsonValidatorCache.FailingValidator, else it returns an InstanceValidator.

Returns:

the loader function