Github user ravipesala commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/2649#discussion_r213560099
--- Diff:
core/src/main/java/org/apache/carbondata/core/scan/complextypes/MapQueryType.java
---
@@ -0,0 +1,47 @@
+/*
+ * 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.carbondata.core.scan.complextypes;
+
+import java.nio.ByteBuffer;
+
+import org.apache.carbondata.core.util.DataTypeUtil;
+
+/**
+ * handles querying map data type columns
+ */
+public class MapQueryType extends ArrayQueryType {
+
+ public MapQueryType(String name, String parentname, int blockIndex) {
+ super(name, parentname, blockIndex);
+ }
+
+ @Override public Object getDataBasedOnDataType(ByteBuffer dataBuffer) {
--- End diff --
Please add comment to tell how we convert array to map
---
