Github user sohami commented on a diff in the pull request:
https://github.com/apache/drill/pull/710#discussion_r95044899
--- Diff:
exec/java-exec/src/test/java/org/apache/drill/test/ProfileParser.java ---
@@ -0,0 +1,217 @@
+/*
+ * 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.drill.test;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import javax.json.Json;
+import javax.json.JsonArray;
+import javax.json.JsonNumber;
+import javax.json.JsonObject;
+import javax.json.JsonReader;
+import javax.json.JsonValue;
+
+/**
+ * Parses a query profile and provides access to various bits of the
profile
+ * for diagnostic purposes during tests.
+ */
+
+public class ProfileParser {
+
+ JsonObject profile;
+ List<String> plans;
+
+ public ProfileParser( File file ) throws IOException {
+ try (FileReader fileReader = new FileReader(file);
+ JsonReader reader = Json.createReader(fileReader)) {
+ profile = (JsonObject) reader.read();
+ }
+ }
+
+ public String getQuery( ) {
+ return profile.get("query").toString();
+ }
+
+ public String getPlan() {
+ return profile.get("plan").toString();
+ }
+
+ public List<String> getPlans() {
+ if ( plans != null ) {
+ return plans; }
+ String plan = getPlan( );
+ Pattern p = Pattern.compile( "(\\d\\d-\\d+[^\\\\]*)\\\\n",
Pattern.MULTILINE );
+ Matcher m = p.matcher(plan);
+ plans = new ArrayList<>( );
+ while ( m.find() ) {
+ plans.add(m.group(1));
+ }
+ return plans;
+ }
+
+ public String getScan( ) {
+ int n = getPlans( ).size();
+ Pattern p = Pattern.compile( "\\d+-\\d+\\s+(\\w+)\\(" );
--- End diff --
So we are just trying to find if this plan has Scan keyword after fragment
number. Can't we simply use plan.contains("Scan") ? I guess the scan keyword
will only be in plans which are actually Scan's.?
Also there can be multiple Scans in the plan right ? In which case we
should return list of plans here.
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