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.

Constructor Summary

Generator()

Method Summary

ParseContext

transform(ParseContext pctx) All transformation steps implement this interface.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Generator

public Generator()

Method Detail

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