avro

Dynamic typing : Avro does not require that code be generated .

动态类型：Avro无需生成代码。

In this article I will try to describe my experimenting with Avro , specifically

在这篇文章中我将试着描述我使用Avro的经验，特别是

In the current Avro implementation , a Schema class takes a single file ( or string ) to build the internal schema representation .

在当前Avro实现中，模式类需要一个文件（或字符串）来表示内部模式。

How to componentize Avro schemas and build overall schema out of components , maintained separately in multiple files

如何建立组件化Avro模式，使用组件搭建整体模式，分别保存在多个文件中

Backward compatibility in Avro documents .

Avro文档的向后兼容性。

Although technically Avro does not support inheritance [ 7 ] , it is simple enough to implement an inheritance-like structure .

虽然技术上Avro不支持继承[7]，但要是实现一个类继承的结构非常简单。

As described in the Avro specification [ 5 ] an Avro document schema is defined as a JSON file .

如Avro规范所述[5]Avro文档模式定义成JSON文件。

JAR-145 approval for maintenance of Avro was received in2001 and of Saab in2002 .

在2001年和2002年分别获得了对Avro和Saab的JAR-145维修批准。

Implementing inheritance in Avro

在Avro中实现继承

In this test , the fully qualified name of the first schema is com . navteq . avro . FacebookUser , so the substitution works correctly and the execution prints out the following result

在这个测试中，第一个模式的完全限定名是com.navteq.avro.FacebookUser，替换正常运行并打印出以下结果