I have a proto file defined with syntax = "proto3" where I have a field optional String name = 0; for example. When compiling the file with protoc installed on the machine I get Explicit 'optional' labels are disallowed in the Proto3 syntax. To define 'optional' fields in Proto3, simply remove the 'optional' label, as fields are 'optional' by default.. When running a maven clean install with the maven compiler I don't get this error. The pom configuration is as follows :
<plugin>
<groupId>org.xolstice.maven.plugins</groupId>
<artifactId>protobuf-maven-plugin</artifactId>
<version>0.6.1</version>
<extensions>true</extensions>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<configuration>
<additionalProtoPathElements>
<additionalProtoPathElement>${project.basedir}/src/main/proto</additionalProtoPathElement>
</additionalProtoPathElements>
<protocArtifact>com.google.protobuf:protoc:3.21.1:exe:${os.detected.classifier}</protocArtifact>
</configuration>
</plugin>
Can someone please help ?
