Package com.networknt.schema

Class JsonSchema

java.lang.Object

com.networknt.schema.ValidationMessageHandler

com.networknt.schema.BaseJsonValidator

com.networknt.schema.JsonSchema

All Implemented Interfaces:

JsonValidator, JsonSchemaWalker

public class JsonSchema
extends BaseJsonValidator

This is the core of json constraint implementation. It parses json constraint file and generates JsonValidators. The class is thread safe, once it is constructed, it can be used to validate multiple json data concurrently.

Field Summary

Fields inherited from class com.networknt.schema.BaseJsonValidator

applyDefaultsStrategy, schemaNode, suppressSubSchemaRetrieval, validationContext

Fields inherited from class com.networknt.schema.ValidationMessageHandler

customErrorMessagesEnabled, errorMessage, errorMessageType, evaluationParentSchema, evaluationPath, failFast, keyword, messageSource, parentSchema, schemaLocation

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	JsonSchema(JsonSchema copy)	Copy constructor.

Method Summary

Modifier and Type	Method	Description
ExecutionContext	createExecutionContext()	Creates an execution context.
JsonSchema	findAncestor()
JsonSchema	findLexicalRoot()
JsonSchema	findSchemaResourceRoot()	Finds the root of the schema resource.
JsonSchema	fromRef(JsonSchema refEvaluationParentSchema, JsonNodePath refEvaluationPath)	Creates a schema using the current one as a template with the parent as the ref.
URI	getCurrentUri()
String	getId()
com.fasterxml.jackson.databind.JsonNode	getRefSchemaNode(String ref)	Find the schema node for $ref attribute.
JsonValidator	getRequiredValidator()
TypeValidator	getTypeValidator()
List<JsonValidator>	getValidators()
boolean	hasRequiredValidator()
boolean	hasTypeValidator()
void	initializeValidators()	Initializes the validators' JsonSchema instances.
boolean	isDynamicAnchor()
boolean	isSchemaResourceRoot()	Determines if this schema resource is a schema resource root.
String	toString()
Set<ValidationMessage>	validate(com.fasterxml.jackson.databind.JsonNode rootNode)	Validate the given root JsonNode, starting at the root of the data path.
<T> T	validate(com.fasterxml.jackson.databind.JsonNode rootNode, OutputFormat<T> format)	Validates the given root JsonNode, starting at the root of the data path.
<T> T	validate(com.fasterxml.jackson.databind.JsonNode rootNode, OutputFormat<T> format, com.networknt.schema.ExecutionCustomizer executionCustomizer)	Validates the given root JsonNode, starting at the root of the data path.
Set<ValidationMessage>	validate(ExecutionContext executionContext, com.fasterxml.jackson.databind.JsonNode jsonNode, com.fasterxml.jackson.databind.JsonNode rootNode, JsonNodePath instanceLocation)	START OF VALIDATE METHODS
ValidationResult	validateAndCollect(com.fasterxml.jackson.databind.JsonNode node)
ValidationResult	validateAndCollect(ExecutionContext executionContext, com.fasterxml.jackson.databind.JsonNode node)
ValidationResult	walk(com.fasterxml.jackson.databind.JsonNode node, boolean shouldValidateSchema)
ValidationResult	walk(ExecutionContext executionContext, com.fasterxml.jackson.databind.JsonNode node, boolean shouldValidateSchema)	Walk the JSON node
Set<ValidationMessage>	walk(ExecutionContext executionContext, com.fasterxml.jackson.databind.JsonNode node, com.fasterxml.jackson.databind.JsonNode rootNode, JsonNodePath instanceLocation, boolean shouldValidateSchema)	This is default implementation of walk method.
ValidationResult	walkAtNode(ExecutionContext executionContext, com.fasterxml.jackson.databind.JsonNode node, com.fasterxml.jackson.databind.JsonNode rootNode, JsonNodePath instanceLocation, boolean shouldValidateSchema)
JsonSchema	withConfig(SchemaValidatorsConfig config)

Methods inherited from class com.networknt.schema.BaseJsonValidator

atRoot, checkDiscriminatorMatch, debug, equals, fetchSubSchemaNode, getEvaluationParentSchema, getEvaluationPath, getKeyword, getNodeFieldType, getParentSchema, getSchemaLocation, getSchemaNode, preloadJsonSchemas, registerAndMergeDiscriminator, validate, validate, validate

Methods inherited from class com.networknt.schema.ValidationMessageHandler

getErrorCodeKey, getErrorMessage, getErrorMessageType, getMessageNode, isPartOfOneOfMultipleType, message, parseErrorCode, schemaLocationContains, updateErrorMessageType, updateKeyword, updateValidatorType

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.networknt.schema.JsonValidator

preloadJsonSchema

Constructor Detail

JsonSchema

protected JsonSchema(JsonSchema copy)

Copy constructor.

Parameters:

copy - to copy from

Method Detail

fromRef

public JsonSchema fromRef(JsonSchema refEvaluationParentSchema,
                          JsonNodePath refEvaluationPath)

Creates a schema using the current one as a template with the parent as the ref.

This is typically used if this schema is a schema resource that can be pointed to by various references.

Parameters:

refEvaluationParentSchema - the parent ref

refEvaluationPath - the ref evaluation path

Returns:

the schema

withConfig

public JsonSchema withConfig(SchemaValidatorsConfig config)

getCurrentUri

public URI getCurrentUri()

getRefSchemaNode

public com.fasterxml.jackson.databind.JsonNode getRefSchemaNode(String ref)

Find the schema node for $ref attribute.

Parameters:

ref - String

Returns:

JsonNode

findLexicalRoot

public JsonSchema findLexicalRoot()

findSchemaResourceRoot

public JsonSchema findSchemaResourceRoot()

Finds the root of the schema resource.

This is either the schema document root or the subschema resource root.

Returns:

the root of the schema

isSchemaResourceRoot

public boolean isSchemaResourceRoot()

Determines if this schema resource is a schema resource root.

This is either the schema document root or the subschema resource root.

Returns:

if this schema is a schema resource root

getId

public String getId()

findAncestor

public JsonSchema findAncestor()

validate

public Set<ValidationMessage> validate(ExecutionContext executionContext,
                                       com.fasterxml.jackson.databind.JsonNode jsonNode,
                                       com.fasterxml.jackson.databind.JsonNode rootNode,
                                       JsonNodePath instanceLocation)

START OF VALIDATE METHODS

Parameters:

executionContext - ExecutionContext

jsonNode - JsonNode

rootNode - JsonNode

instanceLocation - JsonNodePath

Returns:

A list of ValidationMessage if there is any validation error, or an empty list if there is no error.

validate

public Set<ValidationMessage> validate(com.fasterxml.jackson.databind.JsonNode rootNode)

Validate the given root JsonNode, starting at the root of the data path.

Parameters:

rootNode - JsonNode

Returns:

A list of ValidationMessage if there is any validation error, or an empty list if there is no error.

validate

public <T> T validate(com.fasterxml.jackson.databind.JsonNode rootNode,
                      OutputFormat<T> format)

Validates the given root JsonNode, starting at the root of the data path. The output will be formatted using the formatter specified.

Type Parameters:

T - the result type

Parameters:

rootNode - the root note

format - the formatter

Returns:

the result

validate

public <T> T validate(com.fasterxml.jackson.databind.JsonNode rootNode,
                      OutputFormat<T> format,
                      com.networknt.schema.ExecutionCustomizer executionCustomizer)

Validates the given root JsonNode, starting at the root of the data path. The output will be formatted using the formatter specified.

Type Parameters:

T - the result type

Parameters:

rootNode - the root note

format - the formatter

executionCustomizer - the execution customizer

Returns:

the result

validateAndCollect

public ValidationResult validateAndCollect(ExecutionContext executionContext,
                                           com.fasterxml.jackson.databind.JsonNode node)

validateAndCollect

public ValidationResult validateAndCollect(com.fasterxml.jackson.databind.JsonNode node)

walk

public ValidationResult walk(ExecutionContext executionContext,
                             com.fasterxml.jackson.databind.JsonNode node,
                             boolean shouldValidateSchema)

Walk the JSON node

Parameters:

executionContext - ExecutionContext

node - JsonNode

shouldValidateSchema - indicator on validation

Returns:

result of ValidationResult

walk

public ValidationResult walk(com.fasterxml.jackson.databind.JsonNode node,
                             boolean shouldValidateSchema)

walkAtNode

public ValidationResult walkAtNode(ExecutionContext executionContext,
                                   com.fasterxml.jackson.databind.JsonNode node,
                                   com.fasterxml.jackson.databind.JsonNode rootNode,
                                   JsonNodePath instanceLocation,
                                   boolean shouldValidateSchema)

walk

public Set<ValidationMessage> walk(ExecutionContext executionContext,
                                   com.fasterxml.jackson.databind.JsonNode node,
                                   com.fasterxml.jackson.databind.JsonNode rootNode,
                                   JsonNodePath instanceLocation,
                                   boolean shouldValidateSchema)

Description copied from interface: JsonValidator

This is default implementation of walk method. Its job is to call the validate method if shouldValidateSchema is enabled.

Parameters:

executionContext - ExecutionContext

node - JsonNode

rootNode - JsonNode

instanceLocation - JsonNodePath

shouldValidateSchema - boolean

Returns:

a set of validation messages if shouldValidateSchema is true.

toString

public String toString()

Overrides:

toString in class BaseJsonValidator

hasRequiredValidator

public boolean hasRequiredValidator()

getRequiredValidator

public JsonValidator getRequiredValidator()

hasTypeValidator

public boolean hasTypeValidator()

getTypeValidator

public TypeValidator getTypeValidator()

getValidators

public List<JsonValidator> getValidators()

initializeValidators

public void initializeValidators()

Initializes the validators' JsonSchema instances. For avoiding issues with concurrency, in 1.0.49 the JsonSchema instances affiliated with validators were modified to no more preload the schema and lazy loading is used instead.

This comes with the issue that this way you cannot rely on validating important schema features, in particular $ref resolution at instantiation from JsonSchemaFactory.

By calling initializeValidators you can enforce preloading of the JsonSchema instances of the validators.

isDynamicAnchor

public boolean isDynamicAnchor()

createExecutionContext

public ExecutionContext createExecutionContext()

Creates an execution context.

Returns:

the execution context