io.vertx.json.schema

Interface JsonSchema

public interface JsonSchema

A Json-Schema holder.

There are 2 kinds of Json-Schema's:

• JSON Object based
• Boolean based

This is a common interface to handle all kinds of schemas.

Author:

Paulo Lopes

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.function.Predicate<Map.Entry<String,Object>>	EXCLUDE_ANNOTATION_ENTRIES Predicate to filter out annotation keys.
static java.util.function.Predicate<String>	EXCLUDE_ANNOTATIONS Predicate to filter out annotation keys.

Method Summary

Modifier and Type	Method and Description
JsonSchema	annotate(String key, String value) Annotates the schema.
boolean	containsKey(String key) Checks if the given key is present in the schema object.
Set<String>	fieldNames() Returns the field names on the underlying object.
<R> R	get(String key) Get a type casted value by key.
<R> R	get(String key, R fallback) Get a type casted value by key.
static JsonSchema	of(boolean bool) Factory method to create a JsonSchema from a Boolean.
static JsonSchema	of(JsonObject json) Factory method to create a JsonSchema from a JsonObject.
static JsonSchema	of(String id, JsonObject json) Factory method to create a JsonSchema from a JsonObject.
JsonObject	resolve() Deprecated. will be removed in Vert.x 5

Field Detail

EXCLUDE_ANNOTATIONS

static final java.util.function.Predicate<String> EXCLUDE_ANNOTATIONS

Predicate to filter out annotation keys.

EXCLUDE_ANNOTATION_ENTRIES

static final java.util.function.Predicate<Map.Entry<String,Object>> EXCLUDE_ANNOTATION_ENTRIES

Predicate to filter out annotation keys.

Method Detail

of

static JsonSchema of(JsonObject json)

Factory method to create a JsonSchema from a JsonObject.

Parameters:

json - a JSON Object.

Returns:

a wrapper for the input object.

of

static JsonSchema of(String id,
                     JsonObject json)

Factory method to create a JsonSchema from a JsonObject.

Parameters:

id - will force the given id as the schema $id.

json - a JSON Object.

Returns:

a wrapper for the input object.

of

static JsonSchema of(boolean bool)

Factory method to create a JsonSchema from a Boolean.

Parameters:

bool - a boolean.

Returns:

a wrapper for the input object.

annotate

JsonSchema annotate(String key,
                    String value)

Annotates the schema. An annotation is a extra key-value added to the schema that are not relevant for validation but can be used to store pre-computed state.

Parameters:

key - a key

value - a value

get

<R> R get(String key)

Get a type casted value by key.

Parameters:

key - a key

Returns:

the value or null

get

<R> R get(String key,
          R fallback)

Get a type casted value by key. If the key is missing, then the fallback value is returned.

Parameters:

key - a key

fallback - fallback when key is not present

Returns:

the value or null

containsKey

boolean containsKey(String key)

Checks if the given key is present in the schema object.

Parameters:

key - a key

Returns:

true if present

fieldNames

Set<String> fieldNames()

Returns the field names on the underlying object.

Returns:

field names

resolve

JsonObject resolve()

Deprecated. will be removed in Vert.x 5

Tries to resolve all internal references. External references are not resolved.

The result is an object where all references have been resolved. Resolution of circular references is shallow. This should normally not be a problem for this use case.

Returns:

a new JsonObject representing the schema with $refs replaced by their value.

Throws:

SchemaException - when the resolution is impossible.