org.apache.hadoop.hive.ql.optimizer.lineage
Class Generator
java.lang.Object
org.apache.hadoop.hive.ql.optimizer.lineage.Generator
- All Implemented Interfaces:
- Transform
public class Generator
- extends Object
- implements Transform
This class generates the lineage information for the columns
and tables from the plan before it goes through other
optimization phases.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Generator
public Generator()
transform
public ParseContext transform(ParseContext pctx)
throws SemanticException
- Description copied from interface:
Transform
- All transformation steps implement this interface.
- Specified by:
transform
in interface Transform
- Parameters:
pctx
- input parse context
- Returns:
- ParseContext
- Throws:
SemanticException
Copyright © 2012 The Apache Software Foundation