Helper classes to map InfluxDB QueryResult object to POJO.
Supposing that you have a measurement CPU:
> INSERT cpu,host=serverA,region=us_west idle=0.64,happydevop=false,uptimesecs=123456789i
>
> select * from cpu
name: cpu
time happydevop host idle region uptimesecs
---- ---------- ---- ---- ------ ----------
2017-06-20T15:32:46.202829088Z false serverA 0.64 us_west 123456789
And the following tag keys:
> show tag keys from cpu
name: cpu
tagKey
------
host
region
- Create a POJO to represent your measurement. For example:
public class Cpu {
private Instant time;
private String hostname;
private String region;
private Double idle;
private Boolean happydevop;
private Long uptimeSecs;
// getters (and setters if you need)
}
- Add @Measurement and @Column annotations:
@Measurement(name = "cpu")
public class Cpu {
@Column(name = "time")
private Instant time;
@Column(name = "host", tag = true)
private String hostname;
@Column(name = "region", tag = true)
private String region;
@Column(name = "idle")
private Double idle;
@Column(name = "happydevop")
private Boolean happydevop;
@Column(name = "uptimesecs")
private Long uptimeSecs;
// getters (and setters if you need)
}
- Call InfluxDBResultMapper.toPOJO(...) to map the QueryResult to your POJO:
InfluxDB influxDB = InfluxDBFactory.connect("http://localhost:8086", "root", "root");
String dbName = "myTimeseries";
QueryResult queryResult = influxDB.query(new Query("SELECT * FROM cpu", dbName));
InfluxResultMapper resultMapper = new InfluxResultMapper(); // or maybe declared as static final
List<Cpu> cpuList = resultMapper.toPOJO(queryResult, Cpu.class);
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