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/**
* Copyright (c) 2017 Contributors to the Eclipse Foundation
* Copyright 2017 SmartBear Software
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.eclipse.microprofile.openapi.annotations.media;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.eclipse.microprofile.openapi.annotations.ExternalDocumentation;
import org.eclipse.microprofile.openapi.annotations.enums.SchemaType;
/**
* The Schema Object allows the definition of input and output data types. These types can be objects, but also
* primitives and arrays. This object is an extended subset of the JSON Schema Specification Wright Draft 00.
*
* @see OpenAPI
* Specification Schema Object
**/
@Target({ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Inherited
public @interface Schema {
/**
* Provides a java class as implementation for this schema. When provided, additional information in the Schema
* annotation (except for type information) will augment the java class after introspection.
*
* @return a class that implements this schema
**/
Class implementation() default Void.class;
/**
* Provides a java class to be used to disallow matching properties. Inline or referenced schema MUST be of a Schema
* Object and not a standard JSON Schema.
*
* @return a class with disallowed properties
**/
Class not() default Void.class;
/**
* Provides an array of java class implementations which can be used to describe multiple acceptable schemas. If
* more than one match the derived schemas, a validation error will occur.
*
* Inline or referenced schema MUST be of a Schema Object and not a standard JSON Schema.
*
*
* @return the list of possible classes for a single match
**/
Class[] oneOf() default {};
/**
* Provides an array of java class implementations which can be used to describe multiple acceptable schemas. If any
* match, the schema will be considered valid.
*
* Inline or referenced schema MUST be of a Schema Object and not a standard JSON Schema.
*
*
* @return the list of possible class matches
**/
Class[] anyOf() default {};
/**
* Provides an array of java class implementations which can be used to describe multiple acceptable schemas. If all
* match, the schema will be considered valid.
*
* Inline or referenced schema MUST be of a Schema Object and not a standard JSON Schema.
*
*
* @return the list of classes to match
**/
Class[] allOf() default {};
/**
* The name of the schema or property.
*
* The name is REQUIRED when the schema is defined within
* {@link org.eclipse.microprofile.openapi.annotations.Components}. The name will be used as the key to add this
* schema to the 'schemas' map for reuse.
*
*
* @return the name of the schema
**/
String name() default "";
/**
* A title to explain the purpose of the schema.
*
* @return the title of the schema
**/
String title() default "";
/**
* Constrains a value such that when divided by the multipleOf, the remainder must be an integer. Ignored if the
* value is 0.
*
* @return the multiplier constraint of the schema
**/
double multipleOf() default 0;
/**
* Sets the maximum numeric value for a property. Value must be a valid number. Ignored if the value is an empty
* string or not a number.
*
* @return the maximum value for this schema
**/
String maximum() default "";
/**
* If true, makes the maximum value exclusive, or a less-than criteria.
*
* @return the exclusive maximum value for this schema
**/
boolean exclusiveMaximum() default false;
/**
* Sets the minimum numeric value for a property. Value must be a valid number. Ignored if the value is an empty
* string or not a number.
*
* @return the minimum value for this schema
**/
String minimum() default "";
/**
* If true, makes the minimum value exclusive, or a greater-than criteria.
*
* @return the exclusive minimum value for this schema
**/
boolean exclusiveMinimum() default false;
/**
* Sets the maximum length of a string value. Ignored if the value is negative.
*
* @return the maximum length of this schema
**/
int maxLength() default Integer.MAX_VALUE;
/**
* Sets the minimum length of a string value. Ignored if the value is negative.
*
* @return the minimum length of this schema
**/
int minLength() default 0;
/**
* A pattern that the value must satisfy. Ignored if the value is an empty string.
*
* @return the pattern of this schema
**/
String pattern() default "";
/**
* Constrains the number of arbitrary properties when additionalProperties is defined. Ignored if value is 0.
*
* @return the maximum number of properties for this schema
**/
int maxProperties() default 0;
/**
* Constrains the number of arbitrary properties when additionalProperties is defined. Ignored if value is 0.
*
* @return the minimum number of properties for this schema
**/
int minProperties() default 0;
/**
* Allows multiple properties in an object to be marked as required.
*
* @return the list of required schema properties
**/
String[] requiredProperties() default {};
/**
* Mandates whether the annotated item is required or not.
*
* @return whether or not this schema is required
**/
boolean required() default false;
/**
* A description of the schema.
*
* @return this schema's description
**/
String description() default "";
/**
* Provides an optional override for the format.
*
* If a consumer is unaware of the meaning of the format, they shall fall back to using the basic type without
* format. For example, if \"type: integer, format: int128\" were used to designate a very large integer,
* most consumers will not understand how to handle it, and fall back to simply \"type: integer\"
*
*
* @return this schema's format
**/
String format() default "";
/**
* Reference value to a Schema definition.
*
* This property provides a reference to an object defined elsewhere. This property and all other properties are
* mutually exclusive. If other properties are defined in addition to the ref property then the result is undefined.
*
* @return a reference to a schema definition
**/
String ref() default "";
/**
* Allows sending a null value for the defined schema.
*
* @return whether or not this schema is nullable
**/
boolean nullable() default false;
/**
* Relevant only for Schema "properties" definitions. Declares the property as "read only". This means that it MAY
* be sent as part of a response but SHOULD NOT be sent as part of the request.
*
* If the property is marked as readOnly being true and is in the required list, the required will take effect on
* the response only. A property MUST NOT be marked as both readOnly and writeOnly being true.
*
*
* @return whether or not this schema is read only
**/
boolean readOnly() default false;
/**
* Relevant only for Schema "properties" definitions. Declares the property as "write only". Therefore, it MAY be
* sent as part of a request but SHOULD NOT be sent as part of the response.
*
* If the property is marked as writeOnly being true and is in the required list, the required will take effect on
* the request only. A property MUST NOT be marked as both readOnly and writeOnly being true.
*
*
* @return whether or not this schema is write only
**/
boolean writeOnly() default false;
/**
* A free-form property to include an example of an instance for this schema.
*
* To represent examples that cannot be naturally represented in JSON or YAML, a string value is used to contain the
* example with escaping where necessary.
*
* When associated with a specific media type, the example string shall be parsed by the consumer to be treated as
* an object or an array.
*
* @return an example of this schema
**/
String example() default "";
/**
* Additional external documentation for this schema.
*
* @return additional schema documentation
**/
ExternalDocumentation externalDocs() default @ExternalDocumentation();
/**
* Specifies that a schema is deprecated and SHOULD be transitioned out of usage.
*
* @return whether or not this schema is deprecated
**/
boolean deprecated() default false;
/**
* Provides an override for the basic type of the schema.
*
* Value MUST be a string. Multiple types via an array are not supported.
*
* MUST be a valid type per the OpenAPI Specification.
*
* @return the type of this schema
**/
SchemaType type() default SchemaType.DEFAULT;
/**
* Provides a list of enum values. Corresponds to the enum property in the OAS schema and the enumeration property
* in the schema model.
*
* @return a list of allowed schema values
*/
String[] enumeration() default {};
/**
* Provides a default value. The default value represents what would be assumed by the consumer of the input as the
* value of the schema if one is not provided.
*
* Unlike JSON Schema, the value MUST conform to the defined type for the Schema Object defined at the same level.
*
* For example, if type is string, then default can be "foo" but cannot be 1.
*
* @return the default value of this schema
*/
String defaultValue() default "";
/**
* Provides a discriminator property value. Adds support for polymorphism.
*
* The discriminator is an object name that is used to differentiate between other schemas which may satisfy the
* payload description.
*
*
* @return the discriminator property
*/
String discriminatorProperty() default "";
/**
* An array of discriminator mappings.
*
* @return the discriminator mappings for this schema
*/
DiscriminatorMapping[] discriminatorMapping() default {};
/**
* Allows schema to be marked as hidden.
*
* @return whether or not this schema is hidden
*/
boolean hidden() default false;
/**
* Only applicable if type=array. Sets the maximum number of items in an array. This integer MUST be greater than,
* or equal to, 0.
*
* An array instance is valid against "maxItems" if its size is less than, or equal to, the value of this keyword.
*
* Ignored if value is Integer.MIN_VALUE.
*
* @return the maximum number of items in this array
**/
int maxItems() default Integer.MIN_VALUE;
/**
* Only applicable if type=array. Sets the minimum number of items in an array. This integer MUST be greater than,
* or equal to, 0.
*
* An array instance is valid against "minItems" if its size is greater than, or equal to, the value of this
* keyword.
*
* Ignored if value is Integer.MAX_VALUE.
*
* @return the minimum number of items in this array
**/
int minItems() default Integer.MAX_VALUE;
/**
* Only applicable if type=array. Determines if the items in the array SHOULD be unique.
*
* If false, the instance validates successfully. If true, the instance validates successfully if all of its
* elements are unique.
*
*
* @return whether the items in this array are unique
**/
boolean uniqueItems() default false;
/**
* Provides a list of properties present in this schema. Use of the properties list does not preclude the annotation
* scanning runtime from also including other properties found in the scan process. For example, if an
* {@link #implementation() implementation} is also specified, the final set of properties used by the annotation
* scanner will include properties from both this list and those found from introspection of the implementation
* class, if any.
*
*
* In the case where properties are specified here in addition to an {@link #implementation() implementation}, the
* attributes given for a property using a {@link SchemaProperty} will override the same attributes scanned (or
* derived) from the implementation class.
*
*
* Example:
*
*
* {@literal @}Schema(properties = {
* {@literal @}SchemaProperty(name = "creditCard", example = "4567100043210001"),
* {@literal @}SchemaProperty(name = "departureFlight", description = "The departure flight information."),
* {@literal @}SchemaProperty(name = "returningFlight")
*})
*
*
* @return a list of defined properties
*
* @since 2.0
*/
SchemaProperty[] properties() default {};
}