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Spark: Add support for describing/showing views
This adds support for: * `DESCRIBE <viewName>` / `DESCRIBE EXTENDED <viewName>` * `SHOW VIEWS` / `SHOW VIEWS LIKE <pattern>` * `SHOW TBLPROPERTIES <viewName>` * `SHOW CREATE TABLE <viewName>`
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36 changes: 36 additions & 0 deletions
36
...s/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/views/ShowIcebergViews.scala
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| /* | ||
| * 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. | ||
| */ | ||
|
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| package org.apache.spark.sql.catalyst.plans.logical.views | ||
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| import org.apache.spark.sql.catalyst.expressions.Attribute | ||
| import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan | ||
| import org.apache.spark.sql.catalyst.plans.logical.ShowViews | ||
| import org.apache.spark.sql.catalyst.plans.logical.UnaryCommand | ||
|
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| case class ShowIcebergViews( | ||
| namespace: LogicalPlan, | ||
| pattern: Option[String], | ||
| override val output: Seq[Attribute] = ShowViews.getOutputAttrs) extends UnaryCommand { | ||
| override def child: LogicalPlan = namespace | ||
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| override protected def withNewChildInternal(newChild: LogicalPlan): ShowIcebergViews = | ||
| copy(namespace = newChild) | ||
| } |
78 changes: 78 additions & 0 deletions
78
...ons/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DescribeV2ViewExec.scala
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| /* | ||
| * 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. | ||
| */ | ||
|
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| package org.apache.spark.sql.execution.datasources.v2 | ||
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| import org.apache.spark.sql.catalyst.InternalRow | ||
| import org.apache.spark.sql.catalyst.expressions.Attribute | ||
| import org.apache.spark.sql.catalyst.util.escapeSingleQuotedString | ||
| import org.apache.spark.sql.connector.catalog.View | ||
| import org.apache.spark.sql.connector.catalog.ViewCatalog | ||
| import org.apache.spark.sql.execution.LeafExecNode | ||
| import scala.collection.JavaConverters._ | ||
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| case class DescribeV2ViewExec( | ||
| output: Seq[Attribute], | ||
| view: View, | ||
| isExtended: Boolean) extends V2CommandExec with LeafExecNode { | ||
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| import org.apache.spark.sql.connector.catalog.CatalogV2Implicits._ | ||
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| override protected def run(): Seq[InternalRow] = { | ||
| if (isExtended) { | ||
| (describeSchema :+ emptyRow) ++ describeExtended | ||
| } else { | ||
| describeSchema | ||
| } | ||
| } | ||
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| private def describeSchema: Seq[InternalRow] = | ||
| view.schema().map { column => | ||
| toCatalystRow( | ||
| column.name, | ||
| column.dataType.simpleString, | ||
| column.getComment().getOrElse("")) | ||
| } | ||
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| private def emptyRow: InternalRow = toCatalystRow("", "", "") | ||
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| private def describeExtended: Seq[InternalRow] = { | ||
| val outputColumns = view.queryColumnNames.mkString("[", ", ", "]") | ||
| val properties: Map[String, String] = view.properties.asScala.toMap -- ViewCatalog.RESERVED_PROPERTIES.asScala | ||
| val viewCatalogAndNamespace: Seq[String] = view.currentCatalog +: view.currentNamespace.toSeq | ||
| val viewProperties = properties.toSeq.sortBy(_._1).map { | ||
| case (key, value) => | ||
| s"'${escapeSingleQuotedString(key)}' = '${escapeSingleQuotedString(value)}'" | ||
| }.mkString("[", ", ", "]") | ||
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| toCatalystRow("# Detailed View Information", "", "") :: | ||
| toCatalystRow("Comment", view.properties.getOrDefault(ViewCatalog.PROP_COMMENT, ""), "") :: | ||
| toCatalystRow("View Text", view.query, "") :: | ||
| toCatalystRow("View Catalog and Namespace", viewCatalogAndNamespace.quoted, "") :: | ||
| toCatalystRow("View Query Output Columns", outputColumns, "") :: | ||
| toCatalystRow("View Properties", viewProperties, "") :: | ||
| toCatalystRow("Created By", view.properties.getOrDefault(ViewCatalog.PROP_CREATE_ENGINE_VERSION, ""), "") :: | ||
| Nil | ||
| } | ||
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| override def simpleString(maxFields: Int): String = { | ||
| s"DescribeV2ViewExec" | ||
| } | ||
| } |
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79 changes: 79 additions & 0 deletions
79
...s/src/main/scala/org/apache/spark/sql/execution/datasources/v2/ShowCreateV2ViewExec.scala
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|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package org.apache.spark.sql.execution.datasources.v2 | ||
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| import org.apache.spark.sql.catalyst.InternalRow | ||
| import org.apache.spark.sql.catalyst.expressions.Attribute | ||
| import org.apache.spark.sql.catalyst.util.escapeSingleQuotedString | ||
| import org.apache.spark.sql.connector.catalog.View | ||
| import org.apache.spark.sql.connector.catalog.ViewCatalog | ||
| import org.apache.spark.sql.execution.LeafExecNode | ||
| import scala.collection.JavaConverters._ | ||
|
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| case class ShowCreateV2ViewExec(output: Seq[Attribute], view: View) | ||
| extends V2CommandExec with LeafExecNode { | ||
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| override protected def run(): Seq[InternalRow] = { | ||
| val builder = new StringBuilder | ||
| builder ++= s"CREATE VIEW ${view.name} " | ||
| showColumns(view, builder) | ||
| showComment(view, builder) | ||
| showProperties(view, builder) | ||
| builder ++= s"AS\n${view.query}\n" | ||
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| Seq(toCatalystRow(builder.toString)) | ||
| } | ||
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| private def showColumns(view: View, builder: StringBuilder): Unit = { | ||
| val columns = view.schema().fields | ||
| .map(x => s"${x.name}${x.getComment().map(c => s" COMMENT '$c'").getOrElse("")}") | ||
| .mkString("(", ", ", ")") | ||
| builder ++= columns | ||
| } | ||
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| private def showComment(view: View, builder: StringBuilder): Unit = { | ||
| Option(view.properties.get(ViewCatalog.PROP_COMMENT)) | ||
| .map(" COMMENT '" + escapeSingleQuotedString(_) + "'\n") | ||
| .foreach(builder.append) | ||
| } | ||
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| private def showProperties( | ||
| view: View, | ||
| builder: StringBuilder): Unit = { | ||
| val showProps = view.properties.asScala.toMap -- ViewCatalog.RESERVED_PROPERTIES.asScala | ||
| if (showProps.nonEmpty) { | ||
| val props = conf.redactOptions(showProps).toSeq.sortBy(_._1).map { | ||
| case (key, value) => | ||
| s"'${escapeSingleQuotedString(key)}' = '${escapeSingleQuotedString(value)}'" | ||
| } | ||
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| builder ++= " TBLPROPERTIES " | ||
| builder ++= concatByMultiLines(props) | ||
| } | ||
| } | ||
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| private def concatByMultiLines(iter: Iterable[String]): String = { | ||
| iter.mkString("(\n ", ",\n ", ")\n") | ||
| } | ||
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| override def simpleString(maxFields: Int): String = { | ||
| s"ShowCreateV2ViewExec" | ||
| } | ||
| } |
55 changes: 55 additions & 0 deletions
55
...c/main/scala/org/apache/spark/sql/execution/datasources/v2/ShowV2ViewPropertiesExec.scala
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,55 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
|
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| package org.apache.spark.sql.execution.datasources.v2 | ||
|
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| import org.apache.spark.sql.catalyst.InternalRow | ||
| import org.apache.spark.sql.catalyst.expressions.Attribute | ||
| import org.apache.spark.sql.connector.catalog.View | ||
| import org.apache.spark.sql.connector.catalog.ViewCatalog | ||
| import org.apache.spark.sql.execution.LeafExecNode | ||
| import scala.collection.JavaConverters._ | ||
|
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| case class ShowV2ViewPropertiesExec( | ||
| output: Seq[Attribute], | ||
| view: View, | ||
| propertyKey: Option[String]) extends V2CommandExec with LeafExecNode { | ||
|
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| override protected def run(): Seq[InternalRow] = { | ||
| propertyKey match { | ||
| case Some(p) => | ||
| val propValue = properties.getOrElse(p, | ||
| s"View ${view.name()} does not have property: $p") | ||
| Seq(toCatalystRow(p, propValue)) | ||
| case None => | ||
| properties.map { | ||
| case (k, v) => toCatalystRow(k, v) | ||
| }.toSeq | ||
| } | ||
| } | ||
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| private def properties = { | ||
| view.properties.asScala.toMap -- ViewCatalog.RESERVED_PROPERTIES.asScala | ||
| } | ||
|
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| override def simpleString(maxFields: Int): String = { | ||
| s"ShowV2ViewPropertiesExec" | ||
| } | ||
| } |
66 changes: 66 additions & 0 deletions
66
...nsions/src/main/scala/org/apache/spark/sql/execution/datasources/v2/ShowV2ViewsExec.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package org.apache.spark.sql.execution.datasources.v2 | ||
|
|
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| import org.apache.spark.sql.catalyst.InternalRow | ||
| import org.apache.spark.sql.catalyst.expressions.Attribute | ||
| import org.apache.spark.sql.catalyst.util.StringUtils | ||
| import org.apache.spark.sql.connector.catalog.ViewCatalog | ||
| import org.apache.spark.sql.execution.LeafExecNode | ||
| import scala.collection.mutable.ArrayBuffer | ||
|
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| case class ShowV2ViewsExec( | ||
| output: Seq[Attribute], | ||
| catalog: ViewCatalog, | ||
| namespace: Seq[String], | ||
| pattern: Option[String]) extends V2CommandExec with LeafExecNode { | ||
|
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| import org.apache.spark.sql.connector.catalog.CatalogV2Implicits._ | ||
|
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| override protected def run(): Seq[InternalRow] = { | ||
| val rows = new ArrayBuffer[InternalRow]() | ||
|
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| // handle GLOBAL VIEWS | ||
| val globalTemp = session.sessionState.catalog.globalTempViewManager.database | ||
| if (namespace.nonEmpty && globalTemp == namespace.head) { | ||
| pattern.map(p => session.sessionState.catalog.globalTempViewManager.listViewNames(p)) | ||
| .getOrElse(session.sessionState.catalog.globalTempViewManager.listViewNames("*")) | ||
| .map(name => rows += toCatalystRow(globalTemp, name, true)) | ||
| } else { | ||
| val views = catalog.listViews(namespace: _*) | ||
| views.map { view => | ||
| if (pattern.map(StringUtils.filterPattern(Seq(view.name()), _).nonEmpty).getOrElse(true)) { | ||
| rows += toCatalystRow(view.namespace().quoted, view.name(), false) | ||
| } | ||
| } | ||
| } | ||
|
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| // include TEMP VIEWS | ||
| pattern.map(p => session.sessionState.catalog.listLocalTempViews(p)) | ||
| .getOrElse(session.sessionState.catalog.listLocalTempViews("*")) | ||
| .map(v => rows += toCatalystRow(v.database.toArray.quoted, v.table, true)) | ||
|
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| rows.toSeq | ||
| } | ||
|
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| override def simpleString(maxFields: Int): String = { | ||
| s"ShowV2ViewsExec" | ||
| } | ||
| } |
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