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java.lang.Objectorg.apache.hadoop.hive.ql.optimizer.Optimizer
public class Optimizer
Implementation of the optimizer
Constructor Summary | |
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Optimizer()
empty constructor |
Method Summary | |
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ParseContext |
getPctx()
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void |
initialize()
create the list of transformations |
ParseContext |
optimize()
invoke all the transformations one-by-one, and alter the query plan |
void |
setPctx(ParseContext pctx)
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public Optimizer()
Method Detail |
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public void initialize()
public ParseContext optimize() throws SemanticException
SemanticException
public ParseContext getPctx()
public void setPctx(ParseContext pctx)
pctx
- the pctx to set
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