当我尝试使用persist（）方法和 kundera 框架将表保存到 cassandra 时，我收到错误：
18976 [Thread-15-localhostAMQPbolt0-executor[2 2]] INFO c.i.c.c.CassandraClientBase - Returning cql query INSERT INTO "pieces"("width","depth","height","idpiece") VALUES(10.0,12.0,11.0,'1') .
18998 [Thread-15-localhostAMQPbolt0-executor[2 2]] INFO d.c.DatabaseController - insert piece to database: SUCCESS
18998 [Thread-15-localhostAMQPbolt0-executor[2 2]] INFO d.d.SensorDAOImpl - start to insert data
19011 [Thread-15-localhostAMQPbolt0-executor[2 2]] INFO c.i.c.c.CassandraClientBase - Returning cql query INSERT INTO "sensors"("event_time","temperature","pressure","IdSensor","date","this$0") VALUES(1462959800344,10.0,10.0,'1',150055,sensor.entitie.predefinedModel.SensorEntitie@1c4a9b7b) .
19015 [Thread-15-localhostAMQPbolt0-executor[2 2]] ERROR c.i.c.c.CassandraClientBase - Error while executing query INSERT INTO "sensors"("event_time","temperature","pressure","IdSensor","date","this$0") VALUES(1462959800344,10.0,10.0,'1',150055,sensor.entitie.predefinedModel.SensorEntitie@1c4a9b7b)
19015 [Thread-15-localhostAMQPbolt0-executor[2 2]] INFO c.i.c.c.CassandraClientBase - Returning delete query DELETE FROM "pieces" WHERE "idpiece" = '1'.
19018 [Thread-15-localhostAMQPbolt0-executor[2 2]] ERROR o.a.s.util - Async loop died!
java.lang.RuntimeException: com.impetus.kundera.KunderaException: com.impetus.kundera.KunderaException: InvalidRequestException(why:line 1:184 mismatched character ')' expecting '-')
at org.apache.storm.utils.DisruptorQueue.consumeBatchToCursor(DisruptorQueue.java:448) ~[storm-core-1.0.0.jar:1.0.0]
at org.apache.storm.utils.DisruptorQueue.consumeBatchWhenAvailable(DisruptorQueue.java:414) ~[storm-core-1.0.0.jar:1.0.0]
at org.apache.storm.disruptor$consume_batch_when_available.invoke(disruptor.clj:73) ~[storm-core-1.0.0.jar:1.0.0]
at org.apache.storm.daemon.executor$fn__8226$fn__8239$fn__8292.invoke(executor.clj:851) ~[storm-core-1.0.0.jar:1.0.0]
at org.apache.storm.util$async_loop$fn__554.invoke(util.clj:484) [storm-core-1.0.0.jar:1.0.0]
at clojure.lang.AFn.run(AFn.java:22) [clojure-1.7.0.jar:?]
at java.lang.Thread.run(Thread.java:745) [?:1.7.0_99]
Caused by: com.impetus.kundera.KunderaException: com.impetus.kundera.KunderaException: InvalidRequestException(why:line 1:184 mismatched character ')' expecting '-')
at com.impetus.kundera.persistence.EntityManagerImpl.persist(EntityManagerImpl.java:180) ~[project-0.0.1-SNAPSHOT-jar-with-dependencies.jar:?]
at database.dao.SensorDAOImpl.insert(SensorDAOImpl.java:54) ~[project-0.0.1-SNAPSHOT-jar-with-dependencies.jar:?]
at database.controller.DatabaseController.saveSensorEntitie(DatabaseController.java:49) ~[project-0.0.1-SNAPSHOT-jar-with-dependencies.jar:?]
at connector.bolt.PrinterBolt.execute(PrinterBolt.java:66) ~[project-0.0.1-SNAPSHOT-jar-with-dependencies.jar:?]
at org.apache.storm.daemon.executor$fn__8226$tuple_action_fn__8228.invoke(executor.clj:731) ~[storm-core-1.0.0.jar:1.0.0]
at org.apache.storm.daemon.executor$mk_task_receiver$fn__8147.invoke(executor.clj:463) ~[storm-core-1.0.0.jar:1.0.0]
at org.apache.storm.disruptor$clojure_handler$reify__7663.onEvent(disruptor.clj:40) ~[storm-core-1.0.0.jar:1.0.0]
at org.apache.storm.utils.DisruptorQueue.consumeBatchToCursor(DisruptorQueue.java:435) ~[storm-core-1.0.0.jar:1.0.0]
... 6 more
如你所见，我想使用onetomany 我的班级实体
@Entity
@Table(name = "pieces", schema = "mykeyspace@cassandra_pu")
public class PieceEntitie implements Serializable{
@Id
private String IdPiece;
@Column
private double width;
@Column
private double height;
@Column
private double depth;
我的班级传感器实体
@EmbeddedId
private CompoundKey key;
@Column
private float temperature;
@Column
private float pressure;
@OneToMany(cascade = { CascadeType.ALL }, fetch = FetchType.EAGER)
@JoinColumn(name="idsensor")
private List<PieceEntitie> pieces;
@Embeddable
public class CompoundKey
{
@Column
private String IdSensor;
@Column
private long date;
@Column(name = "event_time")
private long eventTime;
}
我的桌子：
CREATE TABLE mykeyspace.sensors (
idsensor text,
date bigint,
event_time timestamp,
pressure float,
temperature float,
PRIMARY KEY ((idsensor, date), event_time)
) WITH CLUSTERING ORDER BY (event_time ASC)
AND bloom_filter_fp_chance = 0.01
AND caching = '{"keys":"ALL", "rows_per_partition":"NONE"}'
AND comment = ''
AND compaction = {'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy'}
AND compression = {'sstable_compression': 'org.apache.cassandra.io.compress.LZ4Compressor'}
AND dclocal_read_repair_chance = 0.1
AND default_time_to_live = 0
AND gc_grace_seconds = 864000
AND max_index_interval = 2048
AND memtable_flush_period_in_ms = 0
AND min_index_interval = 128
AND read_repair_chance = 0.0
AND speculative_retry = '99.0PERCENTILE';
cqlsh:sensor> DESCRIBE table pieces ;
CREATE TABLE mykeyspace.pieces (
idpiece text PRIMARY KEY,
depth double,
height double,
idsensor text,
width double
) WITH bloom_filter_fp_chance = 0.01
AND caching = '{"keys":"ALL", "rows_per_partition":"NONE"}'
AND comment = ''
AND compaction = {'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy'}
AND compression = {'sstable_compression': 'org.apache.cassandra.io.compress.LZ4Compressor'}
AND dclocal_read_repair_chance = 0.1
AND default_time_to_live = 0
AND gc_grace_seconds = 864000
AND max_index_interval = 2048
AND memtable_flush_period_in_ms = 0
AND min_index_interval = 128
AND read_repair_chance = 0.0
AND speculative_retry = '99.0PERCENTILE';
教程紧随其后; https://github.com/impetus-opensource/Kundera/wiki/Polyglot-Persistence
我该如何解决这个问题？
答案 0 :(得分：0)
我通过分离CompoundKey类和传感器类解决了这个问题。 在我将CompoundKey类放入传感器类之前，所以Kundera试图将CompoundKey作为属性插入