Sharmarke Aden created AVRO-1188:
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Summary: External Schema Imports via AVSC Schema
Key: AVRO-1188
URL: https://issues.apache.org/jira/browse/AVRO-1188
Project: Avro
Issue Type: New Feature
Components: java
Reporter: Sharmarke Aden
There is no way for ".avsc" schema files to import types (i.e records, enums,
etc) in external schema files. There's tremendous benefit in being able to do
this as it would all for the sharing of common types between multiple schema
files. Here's a use case that illustrates the typical usecase of this feature
request.
Suppose we have an enum called "Privacy" that we would like to share between
multiple schemas:
{code}
//privacy.avsc
{
"type": "enum",
"name": "Privacy",
"symbols" : ["Public", "Private"]
}
{code}
Now, if this feature was implemented one could import the above type into other
schema files by doing something like this:
{code}
//the post.avsc
{
"type": "record",
"name": "Post",
"imports": ["privacy.avsc"] //you can import one or more schemas
"fields": [{
"name": "privacy",
"type": [ "null", "Privacy"], //use imported Privacy type
"default": "Private"
}
]
}
{code}
Here's another schema file that also has a similar privacy concern:
{code}
//the event.avsc is another schema that also imports the privacy type
{
"type": "record",
"name": "Event",
"imports": ["privacy.avsc"] //it also imports the privacy schemas
"fields": [{
"name": "privacy",
"type": [ "null", "Privacy"], //use imported Privacy type
"default": "Public"
}
]
}
{code}
IDL files are able to import external schemas and protocols and it would be
very beneficial if schema files could import other schema files.
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