forked from apache/spark
-
Notifications
You must be signed in to change notification settings - Fork 1
/
ShowTablePropertiesExec.scala
52 lines (46 loc) · 2.14 KB
/
ShowTablePropertiesExec.scala
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
/*
* 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.spark.sql.execution.datasources.v2
import org.apache.spark.sql.catalyst.InternalRow
import org.apache.spark.sql.catalyst.encoders.RowEncoder
import org.apache.spark.sql.catalyst.expressions.{Attribute, AttributeSet, GenericRowWithSchema}
import org.apache.spark.sql.connector.catalog.{CatalogV2Util, Table, TableCatalog}
/**
* Physical plan node for showing table properties.
*/
case class ShowTablePropertiesExec(
output: Seq[Attribute],
catalogTable: Table,
propertyKey: Option[String]) extends V2CommandExec {
override def producedAttributes: AttributeSet = AttributeSet(output)
override protected def run(): Seq[InternalRow] = {
import scala.collection.JavaConverters._
val toRow = RowEncoder(schema).resolveAndBind().createSerializer()
// The reservered properties are accessible through DESCRIBE
val properties = catalogTable.properties.asScala
.filter { case (k, v) => !CatalogV2Util.TABLE_RESERVED_PROPERTIES.contains(k) }
propertyKey match {
case Some(p) =>
val propValue = properties
.getOrElse(p, s"Table ${catalogTable.name} does not have property: $p")
Seq(toRow(new GenericRowWithSchema(Array(p, propValue), schema)).copy())
case None =>
properties.keys.map(k =>
toRow(new GenericRowWithSchema(Array(k, properties(k)), schema)).copy()).toSeq
}
}
}