How to make files generated from avro schema file to have String fields instead of Charset fields

Introduction:

Avro is a widely used data serialization system that allows for efficient data exchange between systems and programming languages. When working with Avro, you might encounter scenarios where you need to convert specific fields to string format in the files generated from Avro schemas. In this blog post, we will explore the process of making fields to string in Avro schema-generated files, enabling you to handle data transformations effectively.

Add the below plugin in the project's pom.xml : 

<build>

        <plugins>

             <plugin>

                <groupId>org.apache.avro</groupId>

                <artifactId>avro-maven-plugin</artifactId>

                <version>${avro.version}</version>

                <executions>

                    <execution>

                        <id>schemas</id>

                        <phase>generate-sources</phase>

                        <goals>

                            <goal>schema</goal>

                        </goals>

                        <configuration>

                            <stringType>String</stringType>

                            <imports>

                                <import>${project.basedir}/src/main/avro/example.avsc</import>

                            </imports>

                            <sourceDirectory>src/main/avro</sourceDirectory>

                        </configuration>

                    </execution>

                </executions>

            </plugin>

        </plugins>

</build>

Notice the configuration <stringType> in bold.

The above configuration will make the generated java files to have fields as String instead of charset.

Hope this helps! Happy coding!

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