flink-doris-connector/src/main/java/org/apache/doris/flink/sink/writer/serializer/jsondebezium/CdcDataChange.java

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package org.apache.doris.flink.sink.writer.serializer.jsondebezium;

import com.fasterxml.jackson.databind.JsonNode;
import org.apache.doris.flink.sink.writer.ChangeEvent;
import org.apache.doris.flink.sink.writer.serializer.DorisRecord;

import java.io.IOException;
import java.util.Map;

/**
 * When cdc connector captures data changes from the source database you need to inherit this class
 * to complete the synchronized data changes to Doris schema. Supports data messages serialized to
 * json
 */
public abstract class CdcDataChange implements ChangeEvent {

    public abstract DorisRecord serialize(String record, JsonNode recordRoot, String op)
            throws IOException;

    protected abstract Map<String, Object> extractBeforeRow(JsonNode record);

    protected abstract Map<String, Object> extractAfterRow(JsonNode record);
}