added newly supported tpch queries

Author: octaviansima

src/main/scala/edu/berkeley/cs/rise/opaque/benchmark/TPCHBenchmark.scala

@@ -46,7 +46,7 @@ object TPCHBenchmark {
   def run(sqlContext: SQLContext, numPartitions: Int, size: String, fileUrl: String) = {
     val tpch = new TPCH(sqlContext, size, fileUrl)
 
-    val supportedQueries = Seq(1, 3, 5, 6, 7, 8, 9, 10, 14, 17)
+    val supportedQueries = Seq(1, 3, 5, 6, 7, 8, 9, 10, 12, 14, 17, 19, 20)
 
     for (queryNumber <- supportedQueries) {
       query(queryNumber, tpch, sqlContext, numPartitions)

src/test/scala/edu/berkeley/cs/rise/opaque/TPCHTests.scala

@@ -26,7 +26,7 @@ import edu.berkeley.cs.rise.opaque.benchmark.TPCH
 trait TPCHTests extends OpaqueTestsBase { self => 
 
   def size = "sf_small"
-  def tpch = new TPCH(spark.sqlContext, size)
+  def tpch = new TPCH(spark.sqlContext, size, "file://")
 
   testAgainstSpark("TPC-H 1") { securityLevel =>
     tpch.query(1, securityLevel, numPartitions).collect