Apache Cassandra CQL3 二进制协议的 Node.js CQL 驱动：node-cassandra-cql
jopen
11年前
node-cassandra-cql 是一个 Apache Cassandra CQL3 二进制协议的 Node.js CQL 驱动。CQL 是 Cassandra 的查询语言。该项目提供到多个主机的连接池、查询参数，以及可通过列名获取数值和支持 bigint。
示例代码：
// Creating a new connection pool to multiple hosts. var cql = require('node-cassandra-cql'); var client = new cql.Client({hosts: ['host1:9042', 'host2:9042'], keyspace: 'keyspace1'}); // Reading client.execute('SELECT key, email, last_name FROM user_profiles WHERE key=?', ['jbay'], function(err, result) { if (err) console.log('execute failed'); else console.log('got user profile with email ' + result.rows[0].get('email')); } ); // Writing client.execute('UPDATE user_profiles SET birth=? WHERE key=?', [new Date(1950, 5, 1), 'jbay'], cql.types.consistencies.quorum, function(err) { if (err) console.log("failure"); else console.log("success"); } ); // Streaming query rows client.streamRows('SELECT event_time, temperature FROM temperature WHERE station_id=', ['abc'], function(err, row) { //the callback will be invoked per each row as soon as they are received if (err) console.log("Oh dear..."); else { console.log('temperature value', row.get('temperature')); } } ); // Streaming field client.streamField('SELECT key, photo FROM user_profiles WHERE key=', ['jbay'], function(err, row, photoStream) { //the callback will be invoked per each row as soon as they are received. if (err) console.log("Shame..."); else { //The stream is a Readable Stream2 object stdout.pipe(photoStream); } } );