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23 lines
822 B
Markdown
23 lines
822 B
Markdown
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# Wherehows Data Model
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The module contains the data model used by WhereHows, including the table DDLs for MySQL DB, Elastic search indices,
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and avro schemas for Kafka events. It also includes the auto generated Kafka event java classes, to be used by other modules.
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## Code Generation for Avro Schema
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The java code here under src/main/java are auto generated by Avro-tool from avro schema (.avsc) of Kafka events.
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They should not be edited directly.
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Note that we currently require avro version 1.4 in Kafka related tasks.
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To generate java code, first download avro-tool-1.4.1, then use command line from wherehows-data-model/:
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```
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java -jar avro-tools-1.4.1.jar compile schema xxx.avsc src/main/java
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```
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## Build
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```
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$ ../gradlew build
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BUILD SUCCESSFUL in 0s
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4 actionable tasks: 2 executed, 2 up-to-date
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```
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