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https://issues.apache.org/jira/browse/FLINK-7062?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16656505#comment-16656505
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ASF GitHub Bot commented on FLINK-7062:
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twalthr commented on a change in pull request #6815: [FLINK-7062][cep][table]
Added basic support for MATCH_RECOGNIZE
URL: https://github.com/apache/flink/pull/6815#discussion_r226556563
##########
File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/nodes/MatchRecognize.scala
##########
@@ -18,134 +18,136 @@
package org.apache.flink.table.plan.nodes
+import java.util.{List => JList, SortedSet => JSortedSet}
+
import com.google.common.collect.ImmutableMap
import org.apache.calcite.rel.{RelCollation, RelWriter}
import org.apache.calcite.rex.{RexCall, RexLiteral, RexNode}
import org.apache.calcite.sql.SqlKind
import org.apache.calcite.sql.SqlMatchRecognize.AfterOption
-import org.apache.flink.cep.nfa.aftermatch.AfterMatchSkipStrategy
-import org.apache.flink.table.plan.nodes.logical.FlinkLogicalMatch
-import org.apache.flink.table.plan.schema.RowSchema
+import org.apache.flink.table.plan.logical.MatchRecognizeDescriptor
+import org.apache.flink.table.runtime.aggregate.SortUtil.directionToOrder
import scala.collection.JavaConverters._
trait MatchRecognize {
Review comment:
Rename to `CommonMatchRecognize`.
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> Support the basic functionality of MATCH_RECOGNIZE
> --------------------------------------------------
>
> Key: FLINK-7062
> URL: https://issues.apache.org/jira/browse/FLINK-7062
> Project: Flink
> Issue Type: Sub-task
> Components: CEP, Table API & SQL
> Reporter: Dian Fu
> Assignee: Dian Fu
> Priority: Major
> Labels: pull-request-available
>
> In this JIRA, we will support the basic functionality of {{MATCH_RECOGNIZE}}
> in Flink SQL API which includes the support of syntax {{MEASURES}},
> {{PATTERN}} and {{DEFINE}}. This would allow users write basic cep use cases
> with SQL like the following example:
> {code}
> SELECT T.aid, T.bid, T.cid
> FROM MyTable
> MATCH_RECOGNIZE (
> MEASURES
> A.id AS aid,
> B.id AS bid,
> C.id AS cid
> PATTERN (A B C)
> DEFINE
> A AS A.name = 'a',
> B AS B.name = 'b',
> C AS C.name = 'c'
> ) AS T
> {code}
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