Question

我正在使用下面的执行计划来填充我的hazelcast支持的事件表。问题是，我如何从另一个执行计划中重用这个现有的hazelcast支持事件表？

这是另一个similar question的后续问题。

@Import('users:1.0.0')
define stream users (meta_name string, correlation_id int);

@from(eventtable = 'hazelcast', cluster.name = 'cluster_a', cluster.password = 'pass@cluster_a')
define table UserTable (name string, id int) ;

from users
select meta_name as name, correlation_id as id
insert OVERWRITE UserTable
  on UserTable.id == id;

Answer 1

您可以在两个执行计划中使用相同的collection.name。您无需使用cluster.name和cluster.password。请参阅以下示例;

执行计划1

@Plan:name('TestIn')

@Import('dataIn:1.0.0')
define stream dataIn (id int, name string);

@from(eventtable = 'hazelcast', collection.name='hzTable')
define table hzTable (id int, name string);

from dataIn
insert into hzTable;

执行计划2

@Plan:name('TestOut')

@Export('dataOut:1.0.0')
define stream dataOut (id int, name string);

@from(eventtable = 'hazelcast', collection.name='hzTable')
define table hzTable (id int, name string);

define trigger periodicTrigger at every 2 sec;

from periodicTrigger join hzTable
select hzTable.id as id, hzTable.name as name
insert into dataOut;

来自Hazelcast的活动表

1 个答案: