Set attribute

Class Name

Specify a class name that is, com.datamirror.ts.target.publication.userexit.sample.kafka.KcopDefaultBehaviourIntegrated.

Append command to properties file

Your properties file is in CDC_kafka_installation_directory/conf/filename.properties.

Properties file content

schema.registry.url=http://localhost:8081
MODIFY_SCHEMA_value.SOURCEDB.ORACLE.TAB3_SET_ATTRIBUTE="header1":"cool","header2":111,"header3":true

curl command

To check the schema, use the following curl command:

[root@beauty1 bin]# curl -X GET -i -H "Content-Type: application/vnd.schemaregistry.v1+json"
http://localhost:8081/subjects/cdc_kafka_testing.kdbi.sourcedb.oracle.tab3-value/versions/latest

Output:

{"type":"record","name":"TAB3","namespace":"value.SOURCEDB.ORACLE","fields":[{"name":"PCKOL","type":[{"type":"string","logicalType":"DECIMAL","dbColumnName":"PCKOL","precision":38,"scale":0},"null"],"doc":"","default":"0"},{"name":"PCKOLDATA","type":[{"type":"string","logicalType":"VARCHAR","dbColumnName":"PCKOLDATA","length":255},"null"],"doc":"","default":""}],"header1":"cool","header2":111,"header3":true}