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https://issues.apache.org/jira/browse/SPARK-27388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16817089#comment-16817089
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Taoufik DACHRAOUI edited comment on SPARK-27388 at 4/13/19 10:06 PM:
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An alternative was created in [https://github.com/apache/spark/pull/24367]
(voters will select the better one)
was (Author: mazeboard):
An alternative was created in [https://github.com/apache/spark/pull/24367]
> expression encoder for avro objects
> -----------------------------------
>
> Key: SPARK-27388
> URL: https://issues.apache.org/jira/browse/SPARK-27388
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 2.4.1
> Reporter: Taoufik DACHRAOUI
> Priority: Major
>
> *What changes were proposed in this pull request?*
> The PR adds support for bean objects, java.util.List, java.util.Map,
> java.nio.ByteBuffer and java enums to ScalaReflection; unlike the existing
> javaBean Encoder, properties can be named without the set/get prefix (this is
> one of the key points that allows the encoding of Avro Fixed types. I
> believe, the other key point is that the addition must be in ScalaReflection).
> Reminder of Avro types:
> * primitive types: null, boolean, int, long, float, double, bytes, string
> * complex types: Records, Enums, Arrays, Maps, Unions, Fixed
> This PR supports simple unions (having a null type and a non-null type) but
> not complex unions for the simple reason that the Avro compiler will generate
> java code with type Object for all complex unions, and fields with simple
> unions will be typed as the non-null type of the union.
>
> *How was this patch tested?*
> currently only 1 encodeDecodeTest was added to ExpressionEncoderSuite; the
> test uses the following avro schema:
> {code:java}
> {"namespace": "org.apache.spark.sql.catalyst.encoders", "type": "record",
> "name": "AvroExample1",
> "fields": [
>
> {"name":"mymoney","type":["null",{"type":"record","name":"Money","namespace":"org.apache.spark.sql.catalyst.encoders","fields":[
> {"name":"amount","type":"float","default":0},
>
> {"name":"currency","type":{"type":"enum","name":"Currency","symbols":["EUR","USD","BRL"]},"default":"EUR"}]}],
> "default":null},
> {"name": "myfloat", "type": "float"},
> {"name": "mylong", "type": "long"},
> {"name": "myint", "type": "int"},
> {"name": "mydouble", "type": "double"},
> {"name": "myboolean", "type": "boolean"},
> {"name": "mystring", "type": "string"},
> {"name": "mybytes", "type": "bytes"},
> {"name": "myfixed", "type": {"type": "fixed", "name": "Magic", "size": 4}},
> {"name": "myarray", "type": {"type": "array", "items": "string"}},
> {"name": "mymap", "type": {"type": "map", "values": "int"}}
> ] }{code}
>
>
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