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  package edu.uci.ics.hivesterix.logical.plan.visitor.base;
  
  import  org.apache.hadoop.hive.ql.exec.CollectOperator;
  import  org.apache.hadoop.hive.ql.exec.ExtractOperator;
  import  org.apache.hadoop.hive.ql.exec.FileSinkOperator;
  import  org.apache.hadoop.hive.ql.exec.FilterOperator;
  import  org.apache.hadoop.hive.ql.exec.ForwardOperator;
  import  org.apache.hadoop.hive.ql.exec.GroupByOperator;
 import  org.apache.hadoop.hive.ql.exec.JoinOperator;
 import  org.apache.hadoop.hive.ql.exec.LateralViewForwardOperator;
 import  org.apache.hadoop.hive.ql.exec.LateralViewJoinOperator;
 import  org.apache.hadoop.hive.ql.exec.LimitOperator;
 import  org.apache.hadoop.hive.ql.exec.MapJoinOperator;
 import  org.apache.hadoop.hive.ql.exec.MapOperator;
 import  org.apache.hadoop.hive.ql.exec.ReduceSinkOperator;
 import  org.apache.hadoop.hive.ql.exec.SMBMapJoinOperator;
 import  org.apache.hadoop.hive.ql.exec.ScriptOperator;
 import  org.apache.hadoop.hive.ql.exec.SelectOperator;
 import  org.apache.hadoop.hive.ql.exec.TableScanOperator;
 import  org.apache.hadoop.hive.ql.exec.UDTFOperator;
 import  org.apache.hadoop.hive.ql.exec.UnionOperator;
 
a default empty implementation of visitor

Author(s):
yingyib
 
 public class DefaultVisitor implements Visitor {
 
     @Override
     public Mutable<ILogicalOperatorvisit(CollectOperator hiveOperator,
             Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
         return null;
     }
 
     @Override
     public Mutable<ILogicalOperatorvisit(JoinOperator hiveOperator,
             Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
         return null;
     }
 
     @Override
     public Mutable<ILogicalOperatorvisit(ExtractOperator hiveOperator,
             Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
         return null;
     }
 
     @Override
     public Mutable<ILogicalOperatorvisit(MapJoinOperator hiveOperator,
             Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
         return null;
     }
 
     @Override
     public Mutable<ILogicalOperatorvisit(SMBMapJoinOperator hiveOperator,
             Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
         return null;
     }
 
     public Mutable<ILogicalOperatorvisit(FileSinkOperator hiveOperator,
             Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
         return null;
     }
 
     public Mutable<ILogicalOperatorvisit(ReduceSinkOperator hiveOperator,
             Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
         return null;
     }
 
     @Override
     public Mutable<ILogicalOperatorvisit(FilterOperator hiveOperator,
             Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
         return null;
     }
 
     @Override
     public Mutable<ILogicalOperatorvisit(ForwardOperator hiveOperator,
             Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
         return null;
     }
 
     @Override
     public Mutable<ILogicalOperatorvisit(GroupByOperator hiveOperator,
             Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
         return null;
     }
 
     @Override
     public Mutable<ILogicalOperatorvisit(LateralViewForwardOperator hiveOperator,
             Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
         return null;
     }
 
     @Override
     public Mutable<ILogicalOperatorvisit(LateralViewJoinOperator hiveOperator,
            Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
        return null;
    }
    @Override
    public Mutable<ILogicalOperatorvisit(LimitOperator hiveOperator,
            Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
        return null;
    }
    @Override
    public Mutable<ILogicalOperatorvisit(MapOperator hiveOperator,
            Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
        return null;
    }
    @Override
    public Mutable<ILogicalOperatorvisit(ScriptOperator hiveOperator,
            Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
        return null;
    }
    @Override
    public Mutable<ILogicalOperatorvisit(SelectOperator hiveOperator,
            Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
        return null;
    }
    @Override
    public Mutable<ILogicalOperatorvisit(TableScanOperator hiveOperator,
            Mutable<ILogicalOperatorAlgebricksParentOperatorTranslator tthrows AlgebricksException {
        return null;
    }
    @Override
    public Mutable<ILogicalOperatorvisit(UDTFOperator operatorMutable<ILogicalOperatorAlgebricksParentOperator,
            Translator tthrows AlgebricksException {
        return null;
    }
    @Override
    public Mutable<ILogicalOperatorvisit(UnionOperator operatorMutable<ILogicalOperatorAlgebricksParentOperator,
            Translator tthrows AlgebricksException {
        return null;
    }
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