Add missing refresh materialized view statement

docs/index.md

@@ -195,6 +195,8 @@ CREATE MATERIALIZED VIEW [IF NOT EXISTS] name
 AS <query>
 WITH ( options )
 
+REFRESH MATERIALIZED VIEW name
+
 SHOW MATERIALIZED [VIEW|VIEWS] IN catalog[.database]
 
 [DESC|DESCRIBE] MATERIALIZED VIEW name
@@ -213,6 +215,8 @@ SELECT
 FROM alb_logs
 GROUP BY TUMBLE(time, '1 Minute')
 
+REFRESH MATERIALIZED VIEW alb_logs_metrics
+
 SHOW MATERIALIZED VIEWS IN spark_catalog.default
 
 DESC MATERIALIZED VIEW alb_logs_metrics

flint-spark-integration/src/main/antlr4/FlintSparkSqlExtensions.g4

@@ -79,6 +79,7 @@ dropCoveringIndexStatement
 
 materializedViewStatement
     : createMaterializedViewStatement
+    | refreshMaterializedViewStatement
     | showMaterializedViewStatement
     | describeMaterializedViewStatement
     | dropMaterializedViewStatement
@@ -90,6 +91,10 @@ createMaterializedViewStatement
         (WITH LEFT_PAREN propertyList RIGHT_PAREN)?
     ;
 
+refreshMaterializedViewStatement
+    : REFRESH MATERIALIZED VIEW mvName=multipartIdentifier
+    ;
+
 showMaterializedViewStatement
     : SHOW MATERIALIZED (VIEW | VIEWS) IN catalogDb=multipartIdentifier
     ;

flint-spark-integration/src/main/scala/org/opensearch/flint/spark/sql/mv/FlintSparkMaterializedViewAstBuilder.scala

@@ -15,6 +15,7 @@ import org.opensearch.flint.spark.sql.FlintSparkSqlExtensionsParser._
 
 import org.apache.spark.sql.Row
 import org.apache.spark.sql.catalyst.expressions.AttributeReference
+import org.apache.spark.sql.catalyst.plans.logical.Command
 import org.apache.spark.sql.catalyst.trees.CurrentOrigin
 import org.apache.spark.sql.types.StringType
 
@@ -25,7 +26,7 @@ trait FlintSparkMaterializedViewAstBuilder extends FlintSparkSqlExtensionsVisito
   self: SparkSqlAstBuilder =>
 
   override def visitCreateMaterializedViewStatement(
-      ctx: CreateMaterializedViewStatementContext): AnyRef = {
+      ctx: CreateMaterializedViewStatementContext): Command = {
     FlintSparkSqlCommand() { flint =>
       val mvName = getFullTableName(flint, ctx.mvName)
       val query = getMvQuery(ctx.query)
@@ -50,8 +51,17 @@ trait FlintSparkMaterializedViewAstBuilder extends FlintSparkSqlExtensionsVisito
     }
   }
 
+  override def visitRefreshMaterializedViewStatement(
+      ctx: RefreshMaterializedViewStatementContext): Command = {
+    FlintSparkSqlCommand() { flint =>
+      val flintIndexName = getFlintIndexName(flint, ctx.mvName)
+      flint.refreshIndex(flintIndexName, RefreshMode.FULL)
+      Seq.empty
+    }
+  }
+
   override def visitShowMaterializedViewStatement(
-      ctx: ShowMaterializedViewStatementContext): AnyRef = {
+      ctx: ShowMaterializedViewStatementContext): Command = {
     val outputSchema = Seq(
       AttributeReference("materialized_view_name", StringType, nullable = false)())
 
@@ -67,7 +77,7 @@ trait FlintSparkMaterializedViewAstBuilder extends FlintSparkSqlExtensionsVisito
   }
 
   override def visitDescribeMaterializedViewStatement(
-      ctx: DescribeMaterializedViewStatementContext): AnyRef = {
+      ctx: DescribeMaterializedViewStatementContext): Command = {
     val outputSchema = Seq(
       AttributeReference("output_col_name", StringType, nullable = false)(),
       AttributeReference("data_type", StringType, nullable = false)())
@@ -86,7 +96,7 @@ trait FlintSparkMaterializedViewAstBuilder extends FlintSparkSqlExtensionsVisito
   }
 
   override def visitDropMaterializedViewStatement(
-      ctx: DropMaterializedViewStatementContext): AnyRef = {
+      ctx: DropMaterializedViewStatementContext): Command = {
     FlintSparkSqlCommand() { flint =>
       flint.deleteIndex(getFlintIndexName(flint, ctx.mvName))
       Seq.empty

integ-test/src/test/scala/org/opensearch/flint/spark/FlintSparkMaterializedViewITSuite.scala

@@ -92,8 +92,7 @@ class FlintSparkMaterializedViewITSuite extends FlintSparkSuite {
          |""".stripMargin)
   }
 
-  // TODO: fix this windowing function unable to be used in GROUP BY
-  ignore("full refresh materialized view") {
+  test("full refresh materialized view") {
     flint
       .materializedView()
       .name(testMvName)
@@ -104,12 +103,12 @@ class FlintSparkMaterializedViewITSuite extends FlintSparkSuite {
 
     val indexData = flint.queryIndex(testFlintIndex)
     checkAnswer(
-      indexData,
+      indexData.select("startTime", "count"),
       Seq(
         Row(timestamp("2023-10-01 00:00:00"), 1),
         Row(timestamp("2023-10-01 00:10:00"), 2),
         Row(timestamp("2023-10-01 01:00:00"), 1),
-        Row(timestamp("2023-10-01 02:00:00"), 1)))
+        Row(timestamp("2023-10-01 03:00:00"), 1)))
   }
 
   test("incremental refresh materialized view") {

integ-test/src/test/scala/org/opensearch/flint/spark/FlintSparkMaterializedViewSqlITSuite.scala

@@ -20,6 +20,7 @@ import org.scalatest.matchers.must.Matchers.defined
 import org.scalatest.matchers.should.Matchers.{convertToAnyShouldWrapper, the}
 
 import org.apache.spark.sql.Row
+import org.apache.spark.sql.flint.FlintDataSourceV2.FLINT_DATASOURCE
 
 class FlintSparkMaterializedViewSqlITSuite extends FlintSparkSuite {
 
@@ -128,6 +129,23 @@ class FlintSparkMaterializedViewSqlITSuite extends FlintSparkSuite {
     (settings \ "index.number_of_replicas").extract[String] shouldBe "2"
   }
 
+  test("create materialized view with manual refresh") {
+    sql(s"""
+         | CREATE MATERIALIZED VIEW $testMvName
+         | AS $testQuery
+         | WITH (
+         |   auto_refresh = false
+         | )
+         |""".stripMargin)
+
+    val indexData = spark.read.format(FLINT_DATASOURCE).load(testFlintIndex)
+    flint.describeIndex(testFlintIndex) shouldBe defined
+    indexData.count() shouldBe 0
+
+    sql(s"REFRESH MATERIALIZED VIEW $testMvName")
+    indexData.count() shouldBe 4
+  }
+
   test("create materialized view if not exists") {
     sql(s"CREATE MATERIALIZED VIEW IF NOT EXISTS $testMvName AS $testQuery")
     flint.describeIndex(testFlintIndex) shouldBe defined