qiaojialin commented on a change in pull request #818: [IOTDB-482] Vectorized 
TimeGenerator
URL: https://github.com/apache/incubator-iotdb/pull/818#discussion_r380029162
 
 

 ##########
 File path: 
server/src/main/java/org/apache/iotdb/db/query/timegenerator/EngineLeafNode.java
 ##########
 @@ -20,26 +20,27 @@
 package org.apache.iotdb.db.query.timegenerator;
 
 import java.io.IOException;
-import org.apache.iotdb.tsfile.read.reader.IPointReader;
+import org.apache.iotdb.tsfile.read.common.TimeSeries;
+import org.apache.iotdb.tsfile.read.reader.IBatchReader;
 import org.apache.iotdb.tsfile.read.query.timegenerator.node.Node;
 import org.apache.iotdb.tsfile.read.query.timegenerator.node.NodeType;
 
 public class EngineLeafNode implements Node {
 
-  private IPointReader reader;
+  private IBatchReader reader;
 
-  public EngineLeafNode(IPointReader reader) {
+  public EngineLeafNode(IBatchReader reader) {
     this.reader = reader;
   }
 
   @Override
   public boolean hasNext() throws IOException {
 
 Review comment:
   ```suggestion
     public boolean hasNextTimeColumn() throws IOException {
   ```

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