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Provide support for validating instances against json schema

4.0.0 #

json_schema 4.0 continues our journey to support additional new versions of the JSON Schema specification (Draft 2019-09 and Draft 2020-12)! Custom vocabulary and format support is also included in this release! In addition to those major features, we have better support for certain built-in formats, as well as improved spec test compliance.

We have greatly reduced the number of dependencies in preparation for a null-safety release (which we're planning in another major release). This has also come with a new Makefile instead our old dart_dev based commands (see README).

  • Additions:
    • Support for JSON Schema Draft 2019-09 (SchemaVersion.draft2019_09)
    • Support for JSON Schema Draft 2020-12 (SchemaVersion.draft2020_12)
    • Default draft is still draft7 for compatibility.
    • Custom Keywords:
      • List<CustomVocabulary> customVocabularies can be passed to all JsonSchema factories.
      • CustomVocabulary
      • CustomKeyword
      • ValidationContext
    • Custom Formats:
      • Map<String, Function> customFormats can be passed to and JsonSchema factory.
      • ValidationContext
  • Deprecated:
    • validateWithResults in favor of validate which now returns the same thing (ValidationResults).
    • DefaultValidators and related globals in favor of passing customFormats to the JsonSchema factories.
  • Removed Deprecations:
    • Removed bin/schemadot.dart, lib/schema_dot.dart and related examples
    • Removed lib/browser.dart and lib/vm.dart and associated globals createSchemaFromUrlBrowser, configureJsonSchemaForBrowser, globalCreateJsonSchemaFromUrl createSchemaFromUrlVm, configureJsonSchemaForVm and resetGlobalTransportPlatform. These were for configuring the runtime environment, which now happens automatically.
    • Removed JsonSchema.createSchemaAsync in favor of JsonSchema.createAsync
    • Removed JsonSchema.createSchema in favor of JsonSchema.create
    • Removed JsonSchema.createSchemaFromUrl in favor of JsonSchema.createFromUrl
    • Removed RefProvider.asyncSchema, RefProvider.syncSchema, RefProvider.asyncJson, and RefProvider.syncJson in favor of RefProvider.async and RefProvider.async, which are easier to use.
    • Removed JsonSchema.refMap
  • Breaking change to validate:
    • now returns ValidationResult instead of bool like validateWithResults (now deprecated).
  • Notable change of behavior to resolvePath with 2019-09 and 2020-12:
    • When used with draft 2019-09 or draft 2020-12, $refs alongside other keywords, which wasn't allowed in earlier drafts, can't always be resolved. We make a best-effort to resolve authoritatively and fall back to throwing an error if the resolution is ambiguous. In future releases, we may release support for resolving this sort of ambiguity (properties + ref, sub-property of a $ref and as sub-property conflicting, etc) based on user-preference.
    • $dynamicRefs cannot yet be resolved using this method (you will only receive the ref itself.)

3.2.0 #

  • Add Validator.validateWithResults (This new method gives the most complete and customizable validation results)
  • Add JsonSchema.validateWithResults
  • Deprecate JsonSchema.validate
  • Deprecate Validator.validate
  • Deprecate JsonSchema.validateWithErrors
  • Deprecate Validator.errors
  • Deprecate Validator.errorObjects

3.1.0 #

  • Remove the need for separate browser and VM imports
  • Deprecate non-json RefProviders
  • More specific missing-required property errors

3.0.0 #

  • Removed support for Dart 1

2.2.0 #

  • Add note about root path in error string when instance path is empty
  • Expose ValidationError class

2.1.4 #

  • Use deep equality to compare maps, fixing equality when enums are present

2.1.3 #

  • New validateWithErrors method on JsonSchema returns all validation errors as a list of objects
  • ValidationError objects include both instance & schema paths for each error
  • Error logic tweaked to provide consistent error paths in JSON pointer notation

2.0.0 #

  • json_schema is no longer bound to dart:io and works in the browser!
  • Full JSON Schema draft6 compatibility
  • Much better $ref resolution, including deep nesting of $refs
  • More typed keyword getters for draft6 like examples
  • Synchronous schema evaluation by default
  • Optional async evaluation and fetching with createSchemaAsync
  • Automatic parsing of JSON strings passed to createSchema and createSchemaAsync
  • Ability to do custom resolution of $refs with RefProvider and RefProviderAsync
  • Optional parsing of JSON strings passed to validate with parseJson = true
  • Dart 2.0 compatibility
  • Many small changes to make things more in line with modern dart.
  • Please see the migration guide for additional info.

1.0.8 #

  • Code cleanup
  • Strong mode
  • Switch build tools to dart_dev

1.0.7 #

  • Update dependency constraint on the args package.

1.0.3 #

  • Add a dependency on the args package.

1.0.2 #

  • Add a dependency on the logging package.
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Provide support for validating instances against json schema

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Dependencies

collection, http, logging, rfc_6901, uri

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