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java.lang.Objectorg.apache.pig.impl.plan.PlanVisitor<LogicalOperator,LogicalPlan>
org.apache.pig.impl.logicalLayer.LOVisitor
org.apache.pig.impl.logicalLayer.UDFFinder
public class UDFFinder
A visitor to track the UDFs in a plan.
Field Summary |
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Fields inherited from class org.apache.pig.impl.plan.PlanVisitor |
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mCurrentWalker, mPlan |
Constructor Summary | |
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UDFFinder(LogicalPlan plan)
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Method Summary | |
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boolean |
foundAnyUDF()
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List<FuncSpec> |
getUDFList()
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Set<FuncSpec> |
getUDFSet()
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protected void |
visit(LOUserFunc udf)
Iterate over each expression that is part of the function argument list |
Methods inherited from class org.apache.pig.impl.logicalLayer.LOVisitor |
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visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit |
Methods inherited from class org.apache.pig.impl.plan.PlanVisitor |
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getPlan, popWalker, pushWalker, visit |
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 UDFFinder(LogicalPlan plan)
plan
- logical plan to query the presence of UDFsMethod Detail |
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protected void visit(LOUserFunc udf) throws VisitorException
LOVisitor
visit
in class LOVisitor
udf
- the user defined function
VisitorException
public List<FuncSpec> getUDFList()
public Set<FuncSpec> getUDFSet()
public boolean foundAnyUDF()
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