[jira] [Commented] (FLINK-6658) Use scala Collections in scala CEP API
[ https://issues.apache.org/jira/browse/FLINK-6658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16027409#comment-16027409 ] ASF GitHub Bot commented on FLINK-6658: --- Github user dawidwys closed the pull request at: https://github.com/apache/flink/pull/3963 > Use scala Collections in scala CEP API > -- > > Key: FLINK-6658 > URL: https://issues.apache.org/jira/browse/FLINK-6658 > Project: Flink > Issue Type: Bug > Components: CEP >Affects Versions: 1.3.0 >Reporter: Dawid Wysakowicz >Assignee: Dawid Wysakowicz > -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (FLINK-6658) Use scala Collections in scala CEP API
[ https://issues.apache.org/jira/browse/FLINK-6658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16026286#comment-16026286 ] ASF GitHub Bot commented on FLINK-6658: --- Github user kl0u commented on the issue: https://github.com/apache/flink/pull/3963 @dawidwys merged this. Could you close the PR and the related JIRA? > Use scala Collections in scala CEP API > -- > > Key: FLINK-6658 > URL: https://issues.apache.org/jira/browse/FLINK-6658 > Project: Flink > Issue Type: Bug > Components: CEP >Affects Versions: 1.3.0 >Reporter: Dawid Wysakowicz >Assignee: Dawid Wysakowicz > -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (FLINK-6658) Use scala Collections in scala CEP API
[
https://issues.apache.org/jira/browse/FLINK-6658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16023339#comment-16023339
]
ASF GitHub Bot commented on FLINK-6658:
---
Github user dawidwys commented on a diff in the pull request:
https://github.com/apache/flink/pull/3963#discussion_r118322678
--- Diff:
flink-libraries/flink-cep-scala/src/main/scala/org/apache/flink/cep/scala/conditions/Context.scala
---
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.flink.cep.scala.conditions
+
+import java.io.Serializable
+
+/**
+ * The context used when evaluating the {@link IterativeCondition
condition}.
+ */
+trait Context[T] extends Serializable {
+ /**
+* @return An { @link Iterable} over the already accepted elements
+*for a given pattern. Elements are iterated in the
order they were
+*inserted in the pattern.
+* @param name The name of the pattern.
+*/
+ def apply(name: String): Iterable[T]
+}
--- End diff --
Right I was also not really decided on that one. Of course you can change
it.
> Use scala Collections in scala CEP API
> --
>
> Key: FLINK-6658
> URL: https://issues.apache.org/jira/browse/FLINK-6658
> Project: Flink
> Issue Type: Bug
> Components: CEP
>Affects Versions: 1.3.0
>Reporter: Dawid Wysakowicz
>Assignee: Dawid Wysakowicz
>
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
[jira] [Commented] (FLINK-6658) Use scala Collections in scala CEP API
[
https://issues.apache.org/jira/browse/FLINK-6658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16023152#comment-16023152
]
ASF GitHub Bot commented on FLINK-6658:
---
Github user kl0u commented on a diff in the pull request:
https://github.com/apache/flink/pull/3963#discussion_r118297586
--- Diff:
flink-libraries/flink-cep-scala/src/main/scala/org/apache/flink/cep/scala/conditions/Context.scala
---
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.flink.cep.scala.conditions
+
+import java.io.Serializable
+
+/**
+ * The context used when evaluating the {@link IterativeCondition
condition}.
+ */
+trait Context[T] extends Serializable {
+ /**
+* @return An { @link Iterable} over the already accepted elements
+*for a given pattern. Elements are iterated in the
order they were
+*inserted in the pattern.
+* @param name The name of the pattern.
+*/
+ def apply(name: String): Iterable[T]
+}
--- End diff --
Why having different method names between Java and Scala? In Java this
method is called `getEventsForPattern()`. We could rename both to sth like
`getEventsForState()` if you agree, but I would suggest that same methods
should have the same name and also, specifically for this, writing
`context(stateName)` does not really seem nice. If you agree I can change it
and then merge.
> Use scala Collections in scala CEP API
> --
>
> Key: FLINK-6658
> URL: https://issues.apache.org/jira/browse/FLINK-6658
> Project: Flink
> Issue Type: Bug
> Components: CEP
>Affects Versions: 1.3.0
>Reporter: Dawid Wysakowicz
>Assignee: Dawid Wysakowicz
>
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
[jira] [Commented] (FLINK-6658) Use scala Collections in scala CEP API
[
https://issues.apache.org/jira/browse/FLINK-6658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16021514#comment-16021514
]
ASF GitHub Bot commented on FLINK-6658:
---
Github user dawidwys commented on a diff in the pull request:
https://github.com/apache/flink/pull/3963#discussion_r118055738
--- Diff:
flink-libraries/flink-cep-scala/src/main/scala/org/apache/flink/cep/scala/PatternStream.scala
---
@@ -296,25 +294,94 @@ class PatternStream[T](jPatternStream:
JPatternStream[T]) {
* timeout events wrapped in a [[Either]] type.
*/
def flatSelect[L: TypeInformation, R: TypeInformation](
- patternFlatTimeoutFunction: (mutable.Map[String, JList[T]], Long,
Collector[L]) => Unit) (
- patternFlatSelectFunction: (mutable.Map[String, JList[T]],
Collector[R]) => Unit)
+ patternFlatTimeoutFunction: (Map[String, Iterable[T]], Long,
Collector[L]) => Unit) (
+ patternFlatSelectFunction: (Map[String, Iterable[T]], Collector[R])
=> Unit)
: DataStream[Either[L, R]] = {
val cleanSelectFun = cleanClosure(patternFlatSelectFunction)
val cleanTimeoutFun = cleanClosure(patternFlatTimeoutFunction)
val patternFlatSelectFun = new PatternFlatSelectFunction[T, R] {
- override def flatSelect(pattern: JMap[String, JList[T]], out:
Collector[R]): Unit = {
-cleanSelectFun(pattern.asScala, out)
+ override def flatSelect(pattern: JMap[String, JList[T]], out:
Collector[R]): Unit =
+cleanSelectFun(mapToScala(pattern), out)
+}
+
+val patternFlatTimeoutFun = new PatternFlatTimeoutFunction[T, L] {
+ override def timeout(
+pattern: JMap[String, JList[T]],
+timeoutTimestamp: Long, out: Collector[L])
+ : Unit = {
+cleanTimeoutFun(mapToScala(pattern), timeoutTimestamp, out)
}
}
--- End diff --
Yes, I am also referring to those methods. :)
> Use scala Collections in scala CEP API
> --
>
> Key: FLINK-6658
> URL: https://issues.apache.org/jira/browse/FLINK-6658
> Project: Flink
> Issue Type: Bug
> Components: CEP
>Affects Versions: 1.3.0
>Reporter: Dawid Wysakowicz
>Assignee: Dawid Wysakowicz
>
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
[jira] [Commented] (FLINK-6658) Use scala Collections in scala CEP API
[
https://issues.apache.org/jira/browse/FLINK-6658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16021497#comment-16021497
]
ASF GitHub Bot commented on FLINK-6658:
---
Github user kl0u commented on a diff in the pull request:
https://github.com/apache/flink/pull/3963#discussion_r118051044
--- Diff:
flink-libraries/flink-cep-scala/src/main/scala/org/apache/flink/cep/scala/PatternStream.scala
---
@@ -296,25 +294,94 @@ class PatternStream[T](jPatternStream:
JPatternStream[T]) {
* timeout events wrapped in a [[Either]] type.
*/
def flatSelect[L: TypeInformation, R: TypeInformation](
- patternFlatTimeoutFunction: (mutable.Map[String, JList[T]], Long,
Collector[L]) => Unit) (
- patternFlatSelectFunction: (mutable.Map[String, JList[T]],
Collector[R]) => Unit)
+ patternFlatTimeoutFunction: (Map[String, Iterable[T]], Long,
Collector[L]) => Unit) (
+ patternFlatSelectFunction: (Map[String, Iterable[T]], Collector[R])
=> Unit)
: DataStream[Either[L, R]] = {
val cleanSelectFun = cleanClosure(patternFlatSelectFunction)
val cleanTimeoutFun = cleanClosure(patternFlatTimeoutFunction)
val patternFlatSelectFun = new PatternFlatSelectFunction[T, R] {
- override def flatSelect(pattern: JMap[String, JList[T]], out:
Collector[R]): Unit = {
-cleanSelectFun(pattern.asScala, out)
+ override def flatSelect(pattern: JMap[String, JList[T]], out:
Collector[R]): Unit =
+cleanSelectFun(mapToScala(pattern), out)
+}
+
+val patternFlatTimeoutFun = new PatternFlatTimeoutFunction[T, L] {
+ override def timeout(
+pattern: JMap[String, JList[T]],
+timeoutTimestamp: Long, out: Collector[L])
+ : Unit = {
+cleanTimeoutFun(mapToScala(pattern), timeoutTimestamp, out)
}
}
--- End diff --
I was referring to the 2 methods that follow :) . The ones that for example
use the `foreach`.
> Use scala Collections in scala CEP API
> --
>
> Key: FLINK-6658
> URL: https://issues.apache.org/jira/browse/FLINK-6658
> Project: Flink
> Issue Type: Bug
> Components: CEP
>Affects Versions: 1.3.0
>Reporter: Dawid Wysakowicz
>Assignee: Dawid Wysakowicz
>
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
[jira] [Commented] (FLINK-6658) Use scala Collections in scala CEP API
[
https://issues.apache.org/jira/browse/FLINK-6658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16021495#comment-16021495
]
ASF GitHub Bot commented on FLINK-6658:
---
Github user dawidwys commented on a diff in the pull request:
https://github.com/apache/flink/pull/3963#discussion_r118050667
--- Diff:
flink-libraries/flink-cep-scala/src/main/scala/org/apache/flink/cep/scala/PatternStream.scala
---
@@ -296,25 +294,94 @@ class PatternStream[T](jPatternStream:
JPatternStream[T]) {
* timeout events wrapped in a [[Either]] type.
*/
def flatSelect[L: TypeInformation, R: TypeInformation](
- patternFlatTimeoutFunction: (mutable.Map[String, JList[T]], Long,
Collector[L]) => Unit) (
- patternFlatSelectFunction: (mutable.Map[String, JList[T]],
Collector[R]) => Unit)
+ patternFlatTimeoutFunction: (Map[String, Iterable[T]], Long,
Collector[L]) => Unit) (
+ patternFlatSelectFunction: (Map[String, Iterable[T]], Collector[R])
=> Unit)
: DataStream[Either[L, R]] = {
val cleanSelectFun = cleanClosure(patternFlatSelectFunction)
val cleanTimeoutFun = cleanClosure(patternFlatTimeoutFunction)
val patternFlatSelectFun = new PatternFlatSelectFunction[T, R] {
- override def flatSelect(pattern: JMap[String, JList[T]], out:
Collector[R]): Unit = {
-cleanSelectFun(pattern.asScala, out)
+ override def flatSelect(pattern: JMap[String, JList[T]], out:
Collector[R]): Unit =
+cleanSelectFun(mapToScala(pattern), out)
+}
+
+val patternFlatTimeoutFun = new PatternFlatTimeoutFunction[T, L] {
+ override def timeout(
+pattern: JMap[String, JList[T]],
+timeoutTimestamp: Long, out: Collector[L])
+ : Unit = {
+cleanTimeoutFun(mapToScala(pattern), timeoutTimestamp, out)
}
}
--- End diff --
This is the scala way of applying `flatFunction`. We also provide both of
those alternatives for e.g. `DataStream#flatMap`.
> Use scala Collections in scala CEP API
> --
>
> Key: FLINK-6658
> URL: https://issues.apache.org/jira/browse/FLINK-6658
> Project: Flink
> Issue Type: Bug
> Components: CEP
>Affects Versions: 1.3.0
>Reporter: Dawid Wysakowicz
>Assignee: Dawid Wysakowicz
>
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
[jira] [Commented] (FLINK-6658) Use scala Collections in scala CEP API
[
https://issues.apache.org/jira/browse/FLINK-6658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16021184#comment-16021184
]
ASF GitHub Bot commented on FLINK-6658:
---
Github user kl0u commented on a diff in the pull request:
https://github.com/apache/flink/pull/3963#discussion_r117989704
--- Diff:
flink-libraries/flink-cep-scala/src/main/scala/org/apache/flink/cep/scala/PatternStream.scala
---
@@ -296,25 +294,94 @@ class PatternStream[T](jPatternStream:
JPatternStream[T]) {
* timeout events wrapped in a [[Either]] type.
*/
def flatSelect[L: TypeInformation, R: TypeInformation](
- patternFlatTimeoutFunction: (mutable.Map[String, JList[T]], Long,
Collector[L]) => Unit) (
- patternFlatSelectFunction: (mutable.Map[String, JList[T]],
Collector[R]) => Unit)
+ patternFlatTimeoutFunction: (Map[String, Iterable[T]], Long,
Collector[L]) => Unit) (
+ patternFlatSelectFunction: (Map[String, Iterable[T]], Collector[R])
=> Unit)
: DataStream[Either[L, R]] = {
val cleanSelectFun = cleanClosure(patternFlatSelectFunction)
val cleanTimeoutFun = cleanClosure(patternFlatTimeoutFunction)
val patternFlatSelectFun = new PatternFlatSelectFunction[T, R] {
- override def flatSelect(pattern: JMap[String, JList[T]], out:
Collector[R]): Unit = {
-cleanSelectFun(pattern.asScala, out)
+ override def flatSelect(pattern: JMap[String, JList[T]], out:
Collector[R]): Unit =
+cleanSelectFun(mapToScala(pattern), out)
+}
+
+val patternFlatTimeoutFun = new PatternFlatTimeoutFunction[T, L] {
+ override def timeout(
+pattern: JMap[String, JList[T]],
+timeoutTimestamp: Long, out: Collector[L])
+ : Unit = {
+cleanTimeoutFun(mapToScala(pattern), timeoutTimestamp, out)
}
}
--- End diff --
Why are the following two methods added?
> Use scala Collections in scala CEP API
> --
>
> Key: FLINK-6658
> URL: https://issues.apache.org/jira/browse/FLINK-6658
> Project: Flink
> Issue Type: Bug
> Components: CEP
>Affects Versions: 1.3.0
>Reporter: Dawid Wysakowicz
>Assignee: Dawid Wysakowicz
>
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
[jira] [Commented] (FLINK-6658) Use scala Collections in scala CEP API
[
https://issues.apache.org/jira/browse/FLINK-6658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16021172#comment-16021172
]
ASF GitHub Bot commented on FLINK-6658:
---
Github user kl0u commented on a diff in the pull request:
https://github.com/apache/flink/pull/3963#discussion_r117985885
--- Diff:
flink-libraries/flink-cep-scala/src/main/scala/org/apache/flink/cep/scala/package.scala
---
@@ -40,7 +44,11 @@ package object scala {
private[flink] def cleanClosure[F <: AnyRef](f: F, checkSerializable:
Boolean = true): F = {
ClosureCleaner.clean(f, checkSerializable)
-return f
+f
+ }
+
+ private[flink] def mapToScala[T](map: JMap[String, JList[T]]):
Map[String, Iterable[T]] = {
+map.asScala.mapValues(_.asScala.toIterable).toMap
--- End diff --
Why not getting rid of the last `.toMap` and return a `collection.Map`?
This will avoid an iteration over the elements of the `JMap` which is important
given that this method will be invoked at every incoming element. From the
rest, I think we are ok as the `asScala`s are just wrappers and the
`.mapValues` are lazily evaluated.
> Use scala Collections in scala CEP API
> --
>
> Key: FLINK-6658
> URL: https://issues.apache.org/jira/browse/FLINK-6658
> Project: Flink
> Issue Type: Bug
> Components: CEP
>Affects Versions: 1.3.0
>Reporter: Dawid Wysakowicz
>Assignee: Dawid Wysakowicz
>
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
[jira] [Commented] (FLINK-6658) Use scala Collections in scala CEP API
[
https://issues.apache.org/jira/browse/FLINK-6658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16019689#comment-16019689
]
ASF GitHub Bot commented on FLINK-6658:
---
GitHub user dawidwys opened a pull request:
https://github.com/apache/flink/pull/3963
[FLINK-6658] Use scala Collections in scala CEP API
Thanks for contributing to Apache Flink. Before you open your pull request,
please take the following check list into consideration.
If your changes take all of the items into account, feel free to open your
pull request. For more information and/or questions please refer to the [How To
Contribute guide](http://flink.apache.org/how-to-contribute.html).
In addition to going through the list, please provide a meaningful
description of your changes.
- [ ] General
- The pull request references the related JIRA issue ("[FLINK-XXX] Jira
title text")
- The pull request addresses only one issue
- Each commit in the PR has a meaningful commit message (including the
JIRA id)
- [ ] Documentation
- Documentation has been added for new functionality
- Old documentation affected by the pull request has been updated
- JavaDoc for public methods has been added
- [ ] Tests & Build
- Functionality added by the pull request is covered by tests
- `mvn clean verify` has been executed successfully locally or a Travis
build has passed
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dawidwys/flink cep-scala-api
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/3963.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3963
commit 91420bd00b37f93456d4c455698ccbf8f090b702
Author: Dawid Wysakowicz
Date: 2017-05-22T15:14:12Z
[FLINK-6658] Use scala Collections in scala CEP API
> Use scala Collections in scala CEP API
> --
>
> Key: FLINK-6658
> URL: https://issues.apache.org/jira/browse/FLINK-6658
> Project: Flink
> Issue Type: Bug
> Components: CEP
>Affects Versions: 1.3.0
>Reporter: Dawid Wysakowicz
>Assignee: Dawid Wysakowicz
>
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
