使用字符串而不是 java.lang.charsequence

Question

(apache avro 1.8.2, avro-maven-plugin 1.8.2)

I'm having problem with avro:schema.

I declared a field like under below

{
            "name": "type",
            "type": {
                "type": "string",
                "avro.java.string": "java.lang.String"
            }
        },

but avro:schema converts like

@Deprecated public java.lang.CharSequence type;

...

public OptionDetail(..., java.lang.CharSequence type, ...) {
    ...
    this.type = type;
    ...
  }

---

What I tried:

1. "avro.java.string": "java.lang.String"
2. (pom.xml, )

<stringType>String</stringType>

Both of above doesn't work properly. Please let me know what should I try more. Thanks.

Answer 1

Have you tried upgrading to Avro version 1.10.0 ? I don't see the issue in this version. Setting the stringType field in the pom fixed it for me, so I expect it's just a version problem.

Answer 2

If you want all you string fields be instances of java.lang.String then you only have to configure the compiler:

java -jar /path/to/avro-tools-1.7.7.jar compile -string schema 

or if you are using the Maven plugin

<plugin>
  <groupId>org.apache.avro</groupId>
  <artifactId>avro-maven-plugin</artifactId>
  <version>1.7.7</version>
  <configuration>
    <stringType>String</stringType>
  </configuration>
  [...]
</plugin>        

More details: https://stackoverflow.com/a/25315412/2945616