GraphQL Schemas

GraphQL schema definitions mined from GitHub. This data is described and analyzed in the 2019 ICSOC paper "An Empirical Study of GraphQL Schemas".

Content available in this snapshot

The data folder contains GraphQL schema definition files mined from GitHub in May 2019. The data stems from 1915 repositories. This data is a subset of the open-source corpus analyzed in the 2019 ICSOC paper "An Empirical Study of GraphQL Schemas". It contains those schemas whose license allows redistribution.

Structure

The name of every JSON file references the repository the data is collected from. The root object in each JSON file contains metadata about the repository from which all related schemas were collected. The schemas themselves are contained in objects listed in the schemas field.

Each of these objects contains a GraphQL schema in Schema Description Language (SDL) in the content field. These objects also contain (among other information):

• A boolean containsQueryType field, indicating whether the schema contains either an Schema Definition or a Root Query Operation.
• A boolean validSchema field, indicating whether the schema is valid based on the validation provided by the GraphQL-js reference implementation.
• A boolean contentDuplicate field, indicating whether a (valid) schema is structurally a duplicate of another schema in the two corpuses used in the ICSOC paper. Note: if, for example, 4 schemas are structurally equal, one of them will have a contentDuplicate value of false and the other three will have a contentDuplicate value of true. The selection of the non-duplicate schema is arbitrary.

In addition, schema objects may contain a merged field, containing data on recovering said schema by combining it with other component schemas from the same repository. Within a merged schema object, the actual stringified merged GraphQL schema is contained in the mergedContent field.

License

Licensed under the MIT license.