Tiago Lima created AVRO-1764:
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Summary: Allow Yaml files as Map to be added in RecordSchema
Key: AVRO-1764
URL: https://issues.apache.org/jira/browse/AVRO-1764
Project: Avro
Issue Type: Improvement
Components: java
Affects Versions: 1.9.0
Reporter: Tiago Lima
I did this little improvement to allow me to add annotations to generated
files.
So, if I want to add persistence's annotation to the generated files, I will
have to add some "javaAnnotations` in schema. This is a bad idea, because my
client also will have these annotations. Maybe I just have to create a *new
layer* using the *Decorator Pattern* to add those annotations, but I don't want
this level of complexity in my application. I just want that my Avro Objects
have some custom annotations.
Because of that, we should have the opportunity to add custom configuration to
be accessed via velocity template (record.vm). So, I added an attribute in
RecordSchema (called metadata) that read an YAML file, which has the same name
of the Record, to be loaded as a Map. Now, I just have to overwrite the
record.vm from velocity to call metadata.
{code:title=record.vm|borderStyle=solid}
#set ($indexName =
$schema.getMetadata().get('persistence').get('elasticsearch').get('indexName'))
#set ($type =
$schema.getMetadata().get('persistence').get('elasticsearch').get('type'))
@Document(indexName = "$indexName", type = "$type")
{code}
This can also be used to add validations and any kind of behaviour to the Avro
Object.
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