Hello,
I cannot get patterns expressed as lambdas like:
Pattern<Event, Event> pattern1 = Pattern.<Event> begin("start")
.where(evt -> evt.key.length() > 0)
.next("last").where(evt -> evt.key.length() >
0).within(Time.seconds(5));
to compile with Flink 1.3.0. My IDE doesn't handle it and building on
command line with maven does not work either. The exception given by a
maven build in command line is:
[ERROR] The method where(IterativeCondition<Event>) in the type
Pattern<Event,Event> is not applicable for the arguments ((<no type> evt)
-> {})
[ERROR]
/Users/xxxx/xxx/cep-test/src/main/java/com/xxxx/xxxx/CEPTest.java:[83]
[ERROR] .where(evt -> evt.key.length() > 0)
[ERROR] ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[ERROR] The target type of this expression must be a functional interface
I used the standard pom.xml generated by the Flink quick start archetype.
If I recall correctly this is something that used to work with Flink
1.2.0-SNAPSHOT back when I tested CEP for the first time.
Any idea why this could be the case or maybe my syntax is not correct? I
include my maven information below.
Thank you,
David
Davids-MacBook-Pro-2:cep-test dkoch$ mvn -v
Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5;
2015-11-10T17:41:47+01:00)
Maven home: /usr/local/Cellar/maven/3.3.9/libexec
Java version: 1.8.0_102, vendor: Oracle Corporation
Java home:
/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.11.6", arch: "x86_64", family: "mac"
