Reference materials

[wanghaisheng]

after some digging,I found some useful links 1、example for how to combine two separate avro schema to fix the reusable problem,how to define optional field in avro schema 2、Can I split an Apache Avro schema across multiple files?

[wanghaisheng]

there are two ways for generating avro schema for FHIR spec, 1、we can use HAPI hapi-fhir-structures-dstu2 to generate avro schema from java class using reflection 2、we can write some transformation codes to generate avro schema from structureDefinition in the spec

[wanghaisheng]

1、 Proof of concept of using Avro in a maven project with unit test for common schema definition / evolution considerations 2、https://github.com/wanghaisheng/wanghaisheng.github.io/issues/90 3、StructureDefinition json to Avro schema json

[wanghaisheng]

https://github.com/fhirbase/fhirbase/tree/master/fhir 可以使用这个目录下整理好的datatype resource的structuredefintion的json文件

wget http://hl7-fhir.github.io/all-valuesets.zip unzip all-valuesets.zip rm all-valuesets.zip rm *.xml wget http://hl7-fhir.github.io/search-parameters.json wget http://hl7-fhir.github.io/profiles-resources.json wget http://hl7-fhir.github.io/profiles-types.json

[wanghaisheng]

https://github.com/ga4gh/schemas 这里是使用avro来定义基因数据的格式 但定义的时候走的是IDL .AVDL 文件 并非.AVSC文件
https://github.com/sameerbhadouria/avdl2avsc-maven-plugin 这个工具科研把avdl转化成avsc文件

[wanghaisheng]

avro schema的演化 1、http://www.cnblogs.com/fxjwind/archive/2013/05/14/3078041.html avro对于schema演化的支持 2、Default values are a must when using schema evolution. If you do not provide a default value for a field that is present in the reader schema, but not in the writer schema, Avro can't figure out how to create this new field in the parsed structure 3、http://martin.kleppmann.com/2012/12/05/schema-evolution-in-avro-protocol-buffers-thrift.html http://www.cnblogs.com/fxjwind/archive/2013/05/14/3078041.html 阿里的数据大牛翻译了这篇博客

[wanghaisheng]

ga4gh/schemas#344 (comment)

[wanghaisheng]

https://github.com/wanghaisheng/wanghaisheng.github.io/issues/90