Astyanax 3.10.x与哪些版本的Cassandra兼容?
创始人
2024-09-20 22:30:56
0

Astyanax 3.10.x与Cassandra 2.1.x版本兼容。以下是一个示例代码,展示了如何使用Astyanax 3.10.x与Cassandra进行连接和查询:

import com.netflix.astyanax.AstyanaxContext;
import com.netflix.astyanax.Keyspace;
import com.netflix.astyanax.MutationBatch;
import com.netflix.astyanax.connectionpool.NodeDiscoveryType;
import com.netflix.astyanax.connectionpool.OperationResult;
import com.netflix.astyanax.connectionpool.exceptions.ConnectionException;
import com.netflix.astyanax.model.ColumnFamily;
import com.netflix.astyanax.model.ColumnList;
import com.netflix.astyanax.serializers.StringSerializer;
import com.netflix.astyanax.thrift.ThriftFamilyFactory;

public class AstyanaxExample {
    public static void main(String[] args) {
        // 创建Astyanax上下文
        AstyanaxContext context = new AstyanaxContext.Builder()
                .forCluster("ClusterName")
                .forKeyspace("KeyspaceName")
                .withAstyanaxConfiguration(new AstyanaxConfigurationImpl()
                        .setDiscoveryType(NodeDiscoveryType.RING_DESCRIBE)
                )
                .withConnectionPoolConfiguration(new ConnectionPoolConfigurationImpl("MyConnectionPool")
                        .setPort(9160)
                        .setMaxConnsPerHost(1)
                        .setSeeds("127.0.0.1:9160")
                )
                .withConnectionPoolMonitor(new CountingConnectionPoolMonitor())
                .buildKeyspace(ThriftFamilyFactory.getInstance());

        context.start();
        
        // 获取Keyspace
        Keyspace keyspace = context.getClient();

        // 定义ColumnFamily
        ColumnFamily columnFamily = ColumnFamily.newColumnFamily(
                "cfName",
                StringSerializer.get(),
                StringSerializer.get());

        // 插入数据
        MutationBatch mutationBatch = keyspace.prepareMutationBatch();
        mutationBatch.withRow(columnFamily, "rowKey")
                .putColumn("column1", "value1", null)
                .putColumn("column2", "value2", null);
        try {
            mutationBatch.execute();
        } catch (ConnectionException e) {
            e.printStackTrace();
        }

        // 查询数据
        try {
            OperationResult> result = keyspace.prepareQuery(columnFamily)
                    .getKey("rowKey")
                    .execute();
            ColumnList columns = result.getResult();
            System.out.println(columns.getStringValue("column1", null));
            System.out.println(columns.getStringValue("column2", null));
        } catch (ConnectionException e) {
            e.printStackTrace();
        }

        // 关闭Astyanax上下文
        context.shutdown();
    }
}

请注意,以上示例使用的是Astyanax 3.10.x版本的API。要与其他版本的Cassandra进行兼容,您可能需要相应调整代码。

相关内容

热门资讯

透视肯定!aapoker真的假... 透视肯定!aapoker真的假的(透视)透视方法(一贯真的有挂)aapoker真的假的是一种具有地方...
透视辅助!aapoker透视怎... 透视辅助!aapoker透视怎么用(透视)透视脚本下载(确实真的是有挂)1、进入到aapoker透视...
透视玄学!aapoker如何设... 透视玄学!aapoker如何设置胜率(透视)透视脚本(确实是真的有挂);1.aapoker如何设置胜...
透视ai代打!aapoker透... 透视ai代打!aapoker透视脚本(透视)ai插件(一贯是有挂);1、任何aapoker透视脚本a...
透视神器!aapoker怎么开... 透视神器!aapoker怎么开辅助器(透视)发牌逻辑(原来有挂)在进入aapoker怎么开辅助器辅助...
透视模拟器!aapoker透视... 透视模拟器!aapoker透视脚本下载(透视)透视脚本(切实存在有挂)进入游戏-大厅左侧-新手福利-...
透视工具!aapoker辅助软... 透视工具!aapoker辅助软件合法吗(透视)透视脚本入口(总是有挂)1、打开软件启动之后找到中间准...
透视好友房!aapoker怎么... 透视好友房!aapoker怎么提高中牌率(透视)透视插件(本来是真的有挂)1、下载好aapoker怎...
透视代打!aa poker透视... 透视代打!aa poker透视软件(透视)透视脚本(其实真的是有挂)1、操作简单,无需注册,只需要使...
透视辅助!aapoker真的假... 透视辅助!aapoker真的假的(透视)辅助插件工具(竟然真的有挂);1)aapoker真的假的辅助...