Fixed issue with extractor and buffered reader

Author: lvca

src/main/java/com/orientechnologies/orient/etl/extractor/ORowExtractor.java

@@ -18,13 +18,13 @@
 
 package com.orientechnologies.orient.etl.extractor;
 
+import com.orientechnologies.orient.etl.OExtractedItem;
+
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.Reader;
 import java.util.NoSuchElementException;
 
-import com.orientechnologies.orient.etl.OExtractedItem;
-
 public class ORowExtractor extends OAbstractSourceExtractor {
   protected BufferedReader bReader;
 
@@ -33,6 +33,18 @@ public String getName() {
     return "row";
   }
 
+  @Override
+  public boolean hasNext() {
+    if (bReader == null)
+      return false;
+
+    try {
+      return bReader.ready();
+    } catch (IOException e) {
+      throw new OExtractorException(e);
+    }
+  }
+
   @Override
   public OExtractedItem next() {
     if (!hasNext())