将缓存值中的JSON CDC数据映射到Ignite sqlline瘦客户端表

import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.List;

public class CDCapture {
    public static List<String> captureChanges() {
        // 模拟从数据库捕获变更数据并转换为JSON字符串列表
        List<String> jsonChanges = ...; // 实际实现中应从CDC工具获取
        return jsonChanges;
    }
}

import redis.clients.jedis.Jedis;

public class CacheManager {
    private Jedis jedis;

    public CacheManager() {
        jedis = new Jedis("localhost");
    }

    public void cacheData(List<String> jsonChanges) {
        for (String json : jsonChanges) {
            jedis.rpush("cdc_data", json);
        }
    }
}

import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteCache;
import org.apache.ignite.Ignition;
import org.apache.ignite.cache.query.SqlFieldsQuery;

public class IgniteMapper {
    public static void mapDataToIgnite() {
        try (Ignite ignite = Ignition.start()) {
            IgniteCache<Integer, String> cache = ignite.getOrCreateCache("cdcCache");

            // 从缓存中读取数据
            List<String> jsonChanges = new CacheManager().retrieveData();

            for (String json : jsonChanges) {
                // 解析JSON并插入到Ignite表中
                ObjectMapper mapper = new ObjectMapper();
                MyDataObject dataObject = mapper.readValue(json, MyDataObject.class);
                cache.put(dataObject.getId(), dataObject);
            }

            // 执行SQL查询验证数据
            SqlFieldsQuery query = new SqlFieldsQuery("SELECT * FROM MyDataObject");
            try (QueryCursor<List<?>> cursor = cache.query(query)) {
                for (List<?> row : cursor) {
                    System.out.println(row);
                }
            }
        }
    }
}