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https://issues.apache.org/jira/browse/FLINK-6149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15972466#comment-15972466
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ASF GitHub Bot commented on FLINK-6149:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3594#discussion_r111918921
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/rel/logical/FlinkLogicalTableSourceScan.scala
---
@@ -0,0 +1,109 @@
+/*
+ * 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.table.rel.logical
+
+import org.apache.calcite.plan._
+import org.apache.calcite.rel.`type`.RelDataType
+import org.apache.calcite.rel.convert.ConverterRule
+import org.apache.calcite.rel.core.TableScan
+import org.apache.calcite.rel.logical.LogicalTableScan
+import org.apache.calcite.rel.metadata.RelMetadataQuery
+import org.apache.calcite.rel.{RelNode, RelWriter}
+import org.apache.flink.table.api.TableEnvironment
+import org.apache.flink.table.calcite.FlinkTypeFactory
+import org.apache.flink.table.plan.schema.TableSourceTable
+import org.apache.flink.table.rel.FlinkConventions
+import org.apache.flink.table.sources.TableSource
+
+import scala.collection.JavaConverters._
+
+class FlinkLogicalTableSourceScan(
+ cluster: RelOptCluster,
+ traitSet: RelTraitSet,
+ table: RelOptTable,
+ val tableSource: TableSource[_])
+ extends TableScan(cluster, traitSet, table)
+ with FlinkLogicalRel {
+
+ def copy(traitSet: RelTraitSet, tableSource: TableSource[_]):
FlinkLogicalTableSourceScan = {
+ new FlinkLogicalTableSourceScan(cluster, traitSet, getTable,
tableSource)
+ }
+
+ override def deriveRowType(): RelDataType = {
+ val flinkTypeFactory =
cluster.getTypeFactory.asInstanceOf[FlinkTypeFactory]
+ flinkTypeFactory.buildRowDataType(
+ TableEnvironment.getFieldNames(tableSource),
+ TableEnvironment.getFieldTypes(tableSource.getReturnType))
+ }
+
+ override def computeSelfCost(planner: RelOptPlanner, metadata:
RelMetadataQuery): RelOptCost = {
+ val rowCnt = metadata.getRowCount(this)
+ planner.getCostFactory.makeCost(rowCnt, rowCnt, rowCnt *
estimateRowSize(getRowType))
+ }
+
+ override def explainTerms(pw: RelWriter): RelWriter = {
--- End diff --
I see, +1
> add additional flink logical relation nodes
> -------------------------------------------
>
> Key: FLINK-6149
> URL: https://issues.apache.org/jira/browse/FLINK-6149
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: Kurt Young
> Assignee: Kurt Young
>
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