jsl · PyPI

A Python DSL for defining JSON schemas

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Project description

Documentation | GitHub | PyPI

JSL is a Python DSL for defining JSON Schemas.

Example

import jsl

class Entry(jsl.Document):
    name = jsl.StringField(required=True)

class File(Entry):
    content = jsl.StringField(required=True)

class Directory(Entry):
    content = jsl.ArrayField(jsl.OneOfField([
        jsl.DocumentField(File, as_ref=True),
        jsl.DocumentField(jsl.RECURSIVE_REFERENCE_CONSTANT)
    ]), required=True)

Directory.get_schema(ordered=True) will return the following JSON schema:

{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "definitions": {
        "directory": {
            "type": "object",
            "properties": {
                "name": {"type": "string"},
                "content": {
                    "type": "array",
                    "items": {
                        "oneOf": [
                            {"$ref": "#/definitions/file"},
                            {"$ref": "#/definitions/directory"}
                        ]
                    }
                }
            },
            "required": ["name", "content"],
            "additionalProperties": false
        },
        "file": {
            "type": "object",
            "properties": {
                "name": {"type": "string"},
                "content": {"type": "string"}
            },
            "required": ["name", "content"],
            "additionalProperties": false
        }
    },
    "$ref": "#/definitions/directory"
}