Package org.apache.juneau.annotation

Annotation Type Schema

@Documented @Target({PARAMETER,METHOD,TYPE,FIELD}) @Retention(RUNTIME) @Repeatable(Array.class) @ContextApply(Apply.class) public @interface Schema
Swagger schema annotation.

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 based on the JSON Schema Specification Draft 4 and uses a predefined subset of it. On top of this subset, there are extensions provided by this specification to allow for more complete documentation.

Used to populate the auto-generated Swagger documentation and UI for server-side @Rest-annotated classes.
Also used to define OpenAPI schema information for POJOs serialized through OpenApiSerializer and parsed through OpenApiParser.

Examples:

// A response object thats a hex-encoded string @Response( schema=@Schema( type="string", format="binary" ) )

// A request body consisting of an array of arrays, the internal // array being of type integer, numbers must be between 0 and 63 (inclusive) @Content( schema=@Schema( items=@Items( type="array", items=@SubItems( type="integer", minimum="0", maximum="63" ) ) ) )

See Also:

  • Element Details

    • _default

      String[] _default
      default field of the Swagger Schema Object.

      Declares the value of the parameter that the server will use if none is provided, for example a "count" to control the number of results per page might default to 100 if not supplied by the client in the request.
      (Note: "default" has no meaning for required parameters.)

      Additionally, this value is used to create instances of POJOs that are then serialized as language-specific examples in the generated Swagger documentation if the examples are not defined in some other way.

      The format of this value is a string.
      Multiple lines are concatenated with newlines.

      Examples:

      public Order placeOrder( @Header("X-PetId") @Schema(_default="100") long petId, @Header("X-AdditionalInfo") @Schema(format="uon", _default="(rushOrder=false)") AdditionalInfo additionalInfo, @Header("X-Flags") @Schema(collectionFormat="uon", _default="@(new-customer)") String[] flags ) {...}

      Used for:
      • Server-side schema-based parsing.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing.
      Returns:
      The annotation value.
      Default:
      {}

    • _enum

      String[] _enum
      enum field of the Swagger Schema Object.

      If specified, the input validates successfully if it is equal to one of the elements in this array.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      The format is either individual values or a comma-delimited list.
      Multiple lines are concatenated with newlines.

      Examples:

      // Comma-delimited list public Collection<Pet> findPetsByStatus( @Header("X-Status") @Schema(_enum="AVAILABLE,PENDING,SOLD") PetStatus status ) {...}

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      {}

    • $ref

      String $ref
      $ref field of the Swagger Schema Object.

      A JSON reference to the schema definition.

      Notes:
      Returns:
      The annotation value.
      Default:
      ""

    • additionalProperties

      String[] additionalProperties
      additionalProperties field of the Swagger Schema Object.
      Notes:
      • The format is a Swagger object.
        Multiple lines are concatenated with newlines.
      Returns:
      The annotation value.
      Default:
      {}

    • allOf

      String[] allOf
      allOf field of the Swagger Schema Object.
      Notes:
      • The format is a Swagger object.
        Multiple lines are concatenated with newlines.
      Returns:
      The annotation value.
      Default:
      {}

    • aev

      boolean aev
      Synonym for allowEmptyValue().
      Returns:
      The annotation value.
      Default:
      false

    • allowEmptyValue

      boolean allowEmptyValue
      allowEmptyValue field of the Swagger Parameter Object.

      Sets the ability to pass empty-valued heaver values.

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.

      Note: This is technically only valid for either query or formData parameters, but support is provided anyway for backwards compatability.

      Returns:
      The annotation value.
      Default:
      false

    • cf

      String cf
      Synonym for collectionFormat().
      Returns:
      The annotation value.
      Default:
      ""

    • collectionFormat

      String collectionFormat
      collectionFormat field.

      Note that this field isn't part of the Swagger 2.0 specification, but the specification does not specify how items are supposed to be represented.

      Determines the format of the array if type "array" is used.
      Can only be used if type is "array".

      Static strings are defined in CollectionFormatType.

      Note that for collections/arrays parameters with POJO element types, the input is broken into a string array before being converted into POJO elements.

      Used for:
      • Server-side schema-based parsing.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing.

      Note that for collections/arrays parameters with POJO element types, the input is broken into a string array before being converted into POJO elements.

      • "csv" (default) - Comma-separated values (e.g. "foo,bar").
      • "ssv" - Space-separated values (e.g. "foo bar").
      • "tsv" - Tab-separated values (e.g. "foo\tbar").
      • "pipes - Pipe-separated values (e.g. "foo|bar").
      • "multi" - Corresponds to multiple parameter instances instead of multiple values for a single instance (e.g. "foo=bar&foo=baz").
      • "uon" - UON notation (e.g. "@(foo,bar)").
      Returns:
      The annotation value.
      Default:
      ""

    • d

      String[] d
      Synonym for description().
      Returns:
      The annotation value.
      Default:
      {}

    • description

      String[] description
      description field of the Swagger Schema Object.

      A brief description of the body. This could contain examples of use.

      Examples:

      // Used on parameter @RestPost public void addPet( @Content @Schema(description="Pet object to add to the store") Pet input ) {...}

      // Used on class @RestPost public void addPet(Pet input) {...} @Content @Schema(description="Pet object to add to the store") public class Pet {...}

      Notes:
      • The format is plain text.
        Multiple lines are concatenated with newlines.
      • Supports SVL Variables (e.g. "$L{my.localized.variable}") for the swagger generator.
      Returns:
      The annotation value.
      Default:
      {}

    • df

      String[] df
      Synonym for _default().
      Returns:
      The annotation value.
      Default:
      {}

    • discriminator

      String discriminator
      discriminator field of the Swagger Schema Object.
      Notes:
      • The format is a Swagger object.
        Multiple lines are concatenated with newlines.
      Returns:
      The annotation value.
      Default:
      ""

    • e

      String[] e
      Synonym for _enum().
      Returns:
      The annotation value.
      Default:
      {}

    • emax

      boolean emax
      Synonym for exclusiveMaximum().
      Returns:
      The annotation value.
      Default:
      false

    • emin

      boolean emin
      Synonym for exclusiveMinimum().
      Returns:
      The annotation value.
      Default:
      false

    • exclusiveMaximum

      boolean exclusiveMaximum
      exclusiveMaximum field of the Swagger Schema Object.

      Defines whether the maximum is matched exclusively.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      Only allowed for the following types: "integer", "number".
      If true, must be accompanied with maximum.

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      false

    • exclusiveMinimum

      boolean exclusiveMinimum
      exclusiveMinimum field of the Swagger Schema Object.

      Defines whether the minimum is matched exclusively.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      Only allowed for the following types: "integer", "number".
      If true, must be accompanied with minimum.

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      false

    • externalDocs

      ExternalDocs externalDocs
      externalDocs field of the Swagger Schema Object.
      Notes:
      • The format is a Swagger object.
        Multiple lines are concatenated with newlines.
      Returns:
      The annotation value.
      Default:
      @org.apache.juneau.annotation.ExternalDocs

    • f

      String f
      Synonym for format().
      Returns:
      The annotation value.
      Default:
      ""

    • format

      String format
      format field of the Swagger Schema Object.

      The extending format for the previously mentioned parameter type.

      Static strings are defined in FormatType.

      Examples:

      // Used on parameter @RestPut public void setAge( @Content @Schema(type="integer", format="int32") String input ) {...}

      Used for:
      • Server-side schema-based parsing.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing.
      • "int32" - Signed 32 bits.
        Only valid with type "integer".
      • "int64" - Signed 64 bits.
        Only valid with type "integer".
      • "float" - 32-bit floating point number.
        Only valid with type "number".
      • "double" - 64-bit floating point number.
        Only valid with type "number".
      • "byte" - BASE-64 encoded characters.
        Only valid with type "string".
        Parameters of type POJO convertible from string are converted after the string has been decoded.
      • "binary" - Hexadecimal encoded octets (e.g. "00FF").
        Only valid with type "string".
        Parameters of type POJO convertible from string are converted after the string has been decoded.
      • "date" - An RFC3339 full-date.
        Only valid with type "string".
      • "date-time" - An RFC3339 date-time.
        Only valid with type "string".
      • "password" - Used to hint UIs the input needs to be obscured.
        This format does not affect the serialization or parsing of the parameter.
      • "uon" - UON notation (e.g. "(foo=bar,baz=@(qux,123))").
        Only valid with type "object".
        If not specified, then the input is interpreted as plain-text and is converted to a POJO directly.
      Notes:
      • The format is plain text.
      See Also:
      Returns:
      The annotation value.
      Default:
      ""

    • ignore

      boolean ignore
      Specifies that schema information for this part should not be shown in the generated Swagger documentation.
      Returns:
      The annotation value.
      Default:
      false

    • items

      Items items
      items field of the Swagger Schema Object.

      Describes the type of items in the array.

      Required if type is "array".
      Can only be used if type is "array".

      Used for:
      • Server-side schema-based parsing and parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing and serializing validation.
      Returns:
      The annotation value.
      Default:
      @org.apache.juneau.annotation.Items

    • max

      String max
      Synonym for maximum().
      Returns:
      The annotation value.
      Default:
      ""

    • maxi

      long maxi
      Synonym for maxItems().
      Returns:
      The annotation value.
      Default:
      -1L

    • maximum

      String maximum
      maximum field of the Swagger Schema Object.

      Defines the maximum value for a parameter of numeric types.
      The value must be a valid JSON number.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      Only allowed for the following types: "integer", "number".

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      ""

    • maxItems

      long maxItems
      maxItems field of the Swagger Schema Object.

      An array or collection is valid if its size is less than, or equal to, the value of this keyword.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      Only allowed for the following types: "array".

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      -1L

    • maxl

      long maxl
      Synonym for maxLength().
      Returns:
      The annotation value.
      Default:
      -1L

    • maxLength

      long maxLength
      maxLength field of the Swagger Schema Object.

      A string instance is valid against this keyword if its length is less than, or equal to, the value of this keyword.
      The length of a string instance is defined as the number of its characters as defined by RFC 4627.
      The value -1 is always ignored.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      Only allowed for the following types: "string".

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      -1L

    • maxp

      long maxp
      Synonym for maxProperties().
      Returns:
      The annotation value.
      Default:
      -1L

    • maxProperties

      long maxProperties
      maxProperties field of the Swagger Schema Object.
      Notes:
      • The format is a Swagger object.
        Multiple lines are concatenated with newlines.
      Returns:
      The annotation value.
      Default:
      -1L

    • min

      String min
      Synonym for minimum().
      Returns:
      The annotation value.
      Default:
      ""

    • mini

      long mini
      Synonym for minItems().
      Returns:
      The annotation value.
      Default:
      -1L

    • minimum

      String minimum
      minimum field of the Swagger Schema Object.

      Defines the minimum value for a parameter of numeric types.
      The value must be a valid JSON number.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      Only allowed for the following types: "integer", "number".

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      ""

    • minItems

      long minItems
      minItems field of the Swagger Schema Object.

      An array or collection is valid if its size is greater than, or equal to, the value of this keyword.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      Only allowed for the following types: "array".

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      -1L

    • minl

      long minl
      Synonym for minLength().
      Returns:
      The annotation value.
      Default:
      -1L

    • minLength

      long minLength
      minLength field of the Swagger Schema Object.

      A string instance is valid against this keyword if its length is greater than, or equal to, the value of this keyword.
      The length of a string instance is defined as the number of its characters as defined by RFC 4627.
      The value -1 is always ignored.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      Only allowed for the following types: "string".

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      -1L

    • minp

      long minp
      Synonym for minProperties().
      Returns:
      The annotation value.
      Default:
      -1L

    • minProperties

      long minProperties
      minProperties field of the Swagger Schema Object.
      Notes:
      • The format is a Swagger object.
        Multiple lines are concatenated with newlines.
      Returns:
      The annotation value.
      Default:
      -1L

    • mo

      String mo
      Synonym for multipleOf().
      Returns:
      The annotation value.
      Default:
      ""

    • multipleOf

      String multipleOf
      multipleOf field of the Swagger Schema Object.

      A numeric instance is valid if the result of the division of the instance by this keyword's value is an integer.
      The value must be a valid JSON number.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      Only allowed for the following types: "integer", "number".

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      ""

    • on

      String[] on
      Dynamically apply this annotation to the specified classes/methods/fields.

      Used in conjunction with BeanContext.Builder.applyAnnotations(Class...) to dynamically apply an annotation to an existing class/method/field. It is ignored when the annotation is applied directly to classes/methods/fields.

      Valid patterns:
      • Classes:
        • Fully qualified:
          • "com.foo.MyClass"
        • Fully qualified inner class:
          • "com.foo.MyClass$Inner1$Inner2"
        • Simple:
          • "MyClass"
        • Simple inner:
          • "MyClass$Inner1$Inner2"
          • "Inner1$Inner2"
          • "Inner2"
      • Methods:
        • Fully qualified with args:
          • "com.foo.MyClass.myMethod(String,int)"
          • "com.foo.MyClass.myMethod(java.lang.String,int)"
          • "com.foo.MyClass.myMethod()"
        • Fully qualified:
          • "com.foo.MyClass.myMethod"
        • Simple with args:
          • "MyClass.myMethod(String,int)"
          • "MyClass.myMethod(java.lang.String,int)"
          • "MyClass.myMethod()"
        • Simple:
          • "MyClass.myMethod"
        • Simple inner class:
          • "MyClass$Inner1$Inner2.myMethod"
          • "Inner1$Inner2.myMethod"
          • "Inner2.myMethod"
      • Fields:
        • Fully qualified:
          • "com.foo.MyClass.myField"
        • Simple:
          • "MyClass.myField"
        • Simple inner class:
          • "MyClass$Inner1$Inner2.myField"
          • "Inner1$Inner2.myField"
          • "Inner2.myField"
      • A comma-delimited list of anything on this list.
      See Also:
      Returns:
      The annotation value.
      Default:
      {}

    • onClass

      Class<?>[] onClass
      Dynamically apply this annotation to the specified classes.

      Identical to on() except allows you to specify class objects instead of a strings.

      See Also:
      Returns:
      The annotation value.
      Default:
      {}

    • p

      String p
      Synonym for pattern().
      Returns:
      The annotation value.
      Default:
      ""

    • pattern

      String pattern
      pattern field of the Swagger Schema Object.

      A string input is valid if it matches the specified regular expression pattern.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      Example:

      @RestPut public void doPut(@Content @Schema(pattern="/\\w+\\.\\d+/") String input) {...}

      Only allowed for the following types: "string".

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      ""

    • properties

      String[] properties
      properties field of the Swagger Schema Object.
      Notes:
      • The format is a Swagger object.
        Multiple lines are concatenated with newlines.
      Returns:
      The annotation value.
      Default:
      {}

    • r

      boolean r
      Synonym for required().
      Returns:
      The annotation value.
      Default:
      false

    • readOnly

      boolean readOnly
      readOnly field of the Swagger Schema Object.
      Notes:
      • The format is a Swagger object.
        Multiple lines are concatenated with newlines.
      Returns:
      The annotation value.
      Default:
      false

    • required

      boolean required
      required field of the Swagger Schema Object.

      Determines whether the parameter is mandatory.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      Examples:

      // Used on parameter @RestPost public void addPet( @Content @Schema(required=true) Pet input ) {...}

      // Used on class @RestPost public void addPet(Pet input) {...} @Content(required=true) public class Pet {...}

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      false

    • ro

      boolean ro
      Synonym for readOnly().
      Returns:
      The annotation value.
      Default:
      false

    • sie

      boolean sie
      Synonym for skipIfEmpty().
      Returns:
      The annotation value.
      Default:
      false

    • skipIfEmpty

      boolean skipIfEmpty
      Skips this value during serialization if it's an empty string or empty collection/array.

      Note that null values are already ignored.

      Used for:
      • Client-side schema-based serializing.
      Returns:
      The annotation value.
      Default:
      false

    • t

      String t
      Synonym for type().
      Returns:
      The annotation value.
      Default:
      ""

    • title

      String title
      title field of the Swagger Schema Object.
      Notes:
      • The format is plain text.
      Returns:
      The annotation value.
      Default:
      ""

    • type

      String type
      type field of the Swagger Schema Object.

      The type of the parameter.

      Examples:

      // Used on parameter @RestPost public void addPet( @Content @Schema(type="object") Pet input ) {...}

      // Used on class @RestPost public void addPet(Pet input) {...} @Content @Schema(type="object") public class Pet {...}

      Used for:
      • Server-side schema-based parsing.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing.
      • "string"
        Parameter must be a string or a POJO convertible from a string.
      • "number"
        Parameter must be a number primitive or number object.
        If parameter is Object, creates either a Float or Double depending on the size of the number.
      • "integer"
        Parameter must be a integer/long primitive or integer/long object.
        If parameter is Object, creates either a Short, Integer, or Long depending on the size of the number.
      • "boolean"
        Parameter must be a boolean primitive or object.
      • "array"
        Parameter must be an array or collection.
        Elements must be strings or POJOs convertible from strings.
        If parameter is Object, creates an JsonList.
      • "object"
        Parameter must be a map or bean.
        If parameter is Object, creates an JsonMap.
        Note that this is an extension of the OpenAPI schema as Juneau allows for arbitrarily-complex POJOs to be serialized as HTTP parts.
      • "file"
        This type is currently not supported.
      Notes:
      See Also:
      Returns:
      The annotation value.
      Default:
      ""

    • ui

      boolean ui
      Synonym for uniqueItems().
      Returns:
      The annotation value.
      Default:
      false

    • uniqueItems

      boolean uniqueItems
      uniqueItems field of the Swagger Schema Object.

      If true the input validates successfully if all of its elements are unique.

      If validation fails during serialization or parsing, the part serializer/parser will throw a SchemaValidationException.
      On the client-side, this gets converted to a RestCallException which is thrown before the connection is made.
      On the server-side, this gets converted to a BadRequest (400).

      If the parameter type is a subclass of Set, this validation is skipped (since a set can only contain unique items anyway).
      Otherwise, the collection or array is checked for duplicate items.

      Only allowed for the following types: "array".

      Used for:
      • Server-side schema-based parsing validation.
      • Server-side generated Swagger documentation.
      • Client-side schema-based serializing validation.
      Returns:
      The annotation value.
      Default:
      false

    • xml

      String[] xml
      xml field of the Swagger Schema Object.
      Notes:
      • The format is a Swagger object.
        Multiple lines are concatenated with newlines.
      Returns:
      The annotation value.
      Default:
      {}