Add methods to genData.

src/main/scala/com/databricks/spark/sql/perf/tpcds/Tables.scala

@@ -16,6 +16,7 @@
 
 package com.databricks.spark.sql.perf.tpcds
 
+import java.io.File
 import java.text.SimpleDateFormat
 import java.util.Date
 
@@ -31,7 +32,7 @@ import org.apache.hadoop.conf.Configuration
 import org.apache.hadoop.fs.{FileSystem, Path}
 import org.apache.hadoop.mapreduce.{OutputCommitter, TaskAttemptContext, RecordWriter, Job}
 import org.apache.spark.SerializableWritable
-import org.apache.spark.sql.{Column, ColumnName, SQLContext}
+import org.apache.spark.sql.{SaveMode, Column, ColumnName, SQLContext}
 import org.apache.spark.sql.catalyst.expressions._
 import org.apache.spark.sql.types.{StringType, StructField, StructType}
 import parquet.hadoop.ParquetOutputFormat
@@ -93,6 +94,41 @@ class Tables(sqlContext: SQLContext, dsdgenDir: String, scaleFactor: Int) extend
 
       convertedData
     }
+
+    def genData(location: String, format: String, overwrite: Boolean): Unit = {
+      val mode = if (overwrite) SaveMode.Overwrite else SaveMode.Ignore
+
+      val withFormatAndMode = df.write.format(format).mode(mode)
+      val withPartitionColumns = if (partitionColumns.isEmpty) {
+        withFormatAndMode
+      } else {
+        withFormatAndMode.partitionBy(partitionColumns : _*)
+      }
+
+      withPartitionColumns.save(location)
+    }
+
+    def createExternalTables(location: String, format: String, databaseName: String, overwrite: Boolean): Unit = {
+      val qualifiedTableName = databaseName + "." + name
+      if (overwrite) {
+        sqlContext.sql(s"DROP TABLE IF EXISTS $databaseName.$name")
+      }
+      sqlContext.createExternalTable(qualifiedTableName, location, format)
+    }
+  }
+
+  def genData(location: String, format: String, overwrite: Boolean): Unit = {
+    tables.foreach { table =>
+      val tableLocation = location + File.separator + format + File.separator + table.name
+      table.genData(tableLocation, format, overwrite)
+    }
+  }
+
+  def createExternalTables(location: String, format: String, databaseName: String, overwrite: Boolean): Unit = {
+    tables.foreach { table =>
+      val tableLocation = location + File.separator + format + File.separator + table.name
+      table.createExternalTables(tableLocation, format, databaseName, overwrite)
+    }
   }
 
   val tables = Seq(