org.apache.hadoop.hive.ql.lib
Class ForwardWalker
java.lang.Object
org.apache.hadoop.hive.ql.lib.DefaultGraphWalker
org.apache.hadoop.hive.ql.lib.ForwardWalker
- All Implemented Interfaces:
- GraphWalker
public class ForwardWalker
- extends DefaultGraphWalker
Method Summary |
void |
walk(Node nd)
walk the current operator and its descendants. |
ForwardWalker
public ForwardWalker(Dispatcher disp)
- Constructor.
- Parameters:
disp
- dispatcher to call for each op encountered
walk
public void walk(Node nd)
throws SemanticException
- walk the current operator and its descendants.
- Overrides:
walk
in class DefaultGraphWalker
- Parameters:
nd
- current operator in the graph
- Throws:
SemanticException
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