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items.go
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items.go
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// Copyright 2015 go-swagger maintainers
//
// 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 spec
import (
"encoding/json"
"strings"
"github.com/go-openapi/jsonpointer"
"github.com/go-openapi/swag"
)
const (
jsonRef = "$ref"
)
// SimpleSchema describe swagger simple schemas for parameters and headers
type SimpleSchema struct {
Type string `json:"type,omitempty"`
Nullable bool `json:"nullable,omitempty"`
Format string `json:"format,omitempty"`
Items *Items `json:"items,omitempty"`
CollectionFormat string `json:"collectionFormat,omitempty"`
Default interface{} `json:"default,omitempty"`
Example interface{} `json:"example,omitempty"`
}
// TypeName return the type (or format) of a simple schema
func (s *SimpleSchema) TypeName() string {
if s.Format != "" {
return s.Format
}
return s.Type
}
// ItemsTypeName yields the type of items in a simple schema array
func (s *SimpleSchema) ItemsTypeName() string {
if s.Items == nil {
return ""
}
return s.Items.TypeName()
}
// CommonValidations describe common JSON-schema validations
type CommonValidations struct {
Maximum *float64 `json:"maximum,omitempty"`
ExclusiveMaximum bool `json:"exclusiveMaximum,omitempty"`
Minimum *float64 `json:"minimum,omitempty"`
ExclusiveMinimum bool `json:"exclusiveMinimum,omitempty"`
MaxLength *int64 `json:"maxLength,omitempty"`
MinLength *int64 `json:"minLength,omitempty"`
Pattern string `json:"pattern,omitempty"`
MaxItems *int64 `json:"maxItems,omitempty"`
MinItems *int64 `json:"minItems,omitempty"`
UniqueItems bool `json:"uniqueItems,omitempty"`
MultipleOf *float64 `json:"multipleOf,omitempty"`
Enum []interface{} `json:"enum,omitempty"`
}
// Items a limited subset of JSON-Schema's items object.
// It is used by parameter definitions that are not located in "body".
//
// For more information: http://goo.gl/8us55a#items-object
type Items struct {
Refable
CommonValidations
SimpleSchema
VendorExtensible
}
// NewItems creates a new instance of items
func NewItems() *Items {
return &Items{}
}
// Typed a fluent builder method for the type of item
func (i *Items) Typed(tpe, format string) *Items {
i.Type = tpe
i.Format = format
return i
}
// AsNullable flags this schema as nullable.
func (i *Items) AsNullable() *Items {
i.Nullable = true
return i
}
// CollectionOf a fluent builder method for an array item
func (i *Items) CollectionOf(items *Items, format string) *Items {
i.Type = jsonArray
i.Items = items
i.CollectionFormat = format
return i
}
// WithDefault sets the default value on this item
func (i *Items) WithDefault(defaultValue interface{}) *Items {
i.Default = defaultValue
return i
}
// WithMaxLength sets a max length value
func (i *Items) WithMaxLength(max int64) *Items {
i.MaxLength = &max
return i
}
// WithMinLength sets a min length value
func (i *Items) WithMinLength(min int64) *Items {
i.MinLength = &min
return i
}
// WithPattern sets a pattern value
func (i *Items) WithPattern(pattern string) *Items {
i.Pattern = pattern
return i
}
// WithMultipleOf sets a multiple of value
func (i *Items) WithMultipleOf(number float64) *Items {
i.MultipleOf = &number
return i
}
// WithMaximum sets a maximum number value
func (i *Items) WithMaximum(max float64, exclusive bool) *Items {
i.Maximum = &max
i.ExclusiveMaximum = exclusive
return i
}
// WithMinimum sets a minimum number value
func (i *Items) WithMinimum(min float64, exclusive bool) *Items {
i.Minimum = &min
i.ExclusiveMinimum = exclusive
return i
}
// WithEnum sets a the enum values (replace)
func (i *Items) WithEnum(values ...interface{}) *Items {
i.Enum = append([]interface{}{}, values...)
return i
}
// WithMaxItems sets the max items
func (i *Items) WithMaxItems(size int64) *Items {
i.MaxItems = &size
return i
}
// WithMinItems sets the min items
func (i *Items) WithMinItems(size int64) *Items {
i.MinItems = &size
return i
}
// UniqueValues dictates that this array can only have unique items
func (i *Items) UniqueValues() *Items {
i.UniqueItems = true
return i
}
// AllowDuplicates this array can have duplicates
func (i *Items) AllowDuplicates() *Items {
i.UniqueItems = false
return i
}
// UnmarshalJSON hydrates this items instance with the data from JSON
func (i *Items) UnmarshalJSON(data []byte) error {
var validations CommonValidations
if err := json.Unmarshal(data, &validations); err != nil {
return err
}
var ref Refable
if err := json.Unmarshal(data, &ref); err != nil {
return err
}
var simpleSchema SimpleSchema
if err := json.Unmarshal(data, &simpleSchema); err != nil {
return err
}
var vendorExtensible VendorExtensible
if err := json.Unmarshal(data, &vendorExtensible); err != nil {
return err
}
i.Refable = ref
i.CommonValidations = validations
i.SimpleSchema = simpleSchema
i.VendorExtensible = vendorExtensible
return nil
}
// MarshalJSON converts this items object to JSON
func (i Items) MarshalJSON() ([]byte, error) {
b1, err := json.Marshal(i.CommonValidations)
if err != nil {
return nil, err
}
b2, err := json.Marshal(i.SimpleSchema)
if err != nil {
return nil, err
}
b3, err := json.Marshal(i.Refable)
if err != nil {
return nil, err
}
b4, err := json.Marshal(i.VendorExtensible)
if err != nil {
return nil, err
}
return swag.ConcatJSON(b4, b3, b1, b2), nil
}
// JSONLookup look up a value by the json property name
func (i Items) JSONLookup(token string) (interface{}, error) {
if token == jsonRef {
return &i.Ref, nil
}
r, _, err := jsonpointer.GetForToken(i.CommonValidations, token)
if err != nil && !strings.HasPrefix(err.Error(), "object has no field") {
return nil, err
}
if r != nil {
return r, nil
}
r, _, err = jsonpointer.GetForToken(i.SimpleSchema, token)
return r, err
}