org.apache.pig.impl.eval
Class StarSpec

java.lang.Object
  extended by org.apache.pig.impl.eval.EvalSpec
      extended by org.apache.pig.impl.eval.StarSpec
All Implemented Interfaces:
Serializable

public final class StarSpec
extends EvalSpec

See Also:
Serialized Form

Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.pig.impl.eval.EvalSpec
EvalSpec.UserComparator
 
Field Summary
 
Fields inherited from class org.apache.pig.impl.eval.EvalSpec
inner, properties
 
Constructor Summary
StarSpec()
           
 
Method Summary
 List<String> getFuncs()
          Get the functions required by this spec
protected  Schema mapInputSchema(Schema input)
          Given an input schema, determine the output schema of this spec as it operates on input tuples with the input schema.
protected  DataCollector setupDefaultPipe(Properties properties, DataCollector endOfPipe)
          set up a default data processing pipe for processing by this spec This pipe does not include unflattening/flattening at the end
 String toString()
           
 void visit(EvalSpecVisitor v)
           
 
Methods inherited from class org.apache.pig.impl.eval.EvalSpec
addSpec, copy, finish, getCombiner, getComparator, getComparatorName, getLineage, getOutputSchemaForPipe, getProperties, instantiateFunc, isAsynchronous, isFlattened, isInner, setComparatorName, setFlatten, setInner, setLineageTracer, setSchema, setupPipe, simpleEval
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

StarSpec

public StarSpec()
Method Detail

toString

public String toString()
Overrides:
toString in class Object

getFuncs

public List<String> getFuncs()
Description copied from class: EvalSpec
Get the functions required by this spec

Specified by:
getFuncs in class EvalSpec
Returns:

setupDefaultPipe

protected DataCollector setupDefaultPipe(Properties properties,
                                         DataCollector endOfPipe)
Description copied from class: EvalSpec
set up a default data processing pipe for processing by this spec This pipe does not include unflattening/flattening at the end

Specified by:
setupDefaultPipe in class EvalSpec
Parameters:
properties - properties for the pipe
endOfPipe - The collector where output is desired
Returns:
The collector where input tuples should be put

mapInputSchema

protected Schema mapInputSchema(Schema input)
Description copied from class: EvalSpec
Given an input schema, determine the output schema of this spec as it operates on input tuples with the input schema.

Specified by:
mapInputSchema in class EvalSpec
Returns:

visit

public void visit(EvalSpecVisitor v)
Specified by:
visit in class EvalSpec


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