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Add support for reading in a schema that contains $ref #105

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Add support for reading in a schema that contains $ref #105

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13 changes: 12 additions & 1 deletion singer/schema.py
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@
'additionalProperties',
'anyOf',
'patternProperties',
'definitions',
]


Expand All @@ -36,7 +37,7 @@ def __init__(self, type=None, format=None, properties=None, items=None,
selected=None, inclusion=None, description=None, minimum=None,
maximum=None, exclusiveMinimum=None, exclusiveMaximum=None,
multipleOf=None, maxLength=None, minLength=None, additionalProperties=None,
anyOf=None, patternProperties=None):
anyOf=None, patternProperties=None, definitions=None, ref=None):

self.type = type
self.properties = properties
Expand All @@ -55,6 +56,8 @@ def __init__(self, type=None, format=None, properties=None, items=None,
self.format = format
self.additionalProperties = additionalProperties
self.patternProperties = patternProperties
self.definitions = definitions
self.ref = ref

def __str__(self):
return json.dumps(self.to_dict())
Expand All @@ -71,6 +74,9 @@ def to_dict(self):
'''Return the raw JSON Schema as a (possibly nested) dict.'''
result = {}

if self.ref is not None:
result['$ref'] = self.ref

if self.properties is not None:
result['properties'] = {
k: v.to_dict()
Expand All @@ -97,6 +103,10 @@ def from_dict(cls, data, **schema_defaults):
kwargs = schema_defaults.copy()
properties = data.get('properties')
items = data.get('items')
ref = data.get('$ref')

if ref is not None:
kwargs['ref'] = ref

if properties is not None:
kwargs['properties'] = {
Expand All @@ -105,6 +115,7 @@ def from_dict(cls, data, **schema_defaults):
}
if items is not None:
kwargs['items'] = Schema.from_dict(items, **schema_defaults)

for key in STANDARD_KEYS:
if key in data:
kwargs[key] = data[key]
Expand Down