org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators
Class POStore

java.lang.Object
  extended by org.apache.pig.impl.plan.Operator<PhyPlanVisitor>
      extended by org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator
          extended by org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POStore
All Implemented Interfaces:
Serializable, Cloneable, Comparable<Operator>, Illustrable

public class POStore
extends PhysicalOperator

The store operator which is used in two ways: 1) As a local operator it can be used to store files 2) In the Map Reduce setting, it is used to create jobs from MapReduce operators which keep the loads and stores in the Map and Reduce Plans till the job is created

See Also:
Serialized Form

Field Summary
 
Fields inherited from class org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator
alias, dummyBag, dummyBool, dummyDBA, dummyDouble, dummyFloat, dummyInt, dummyLong, dummyMap, dummyString, dummyTuple, illustrator, input, inputAttached, inputs, lineageTracer, outputs, parentPlan, pigLogger, reporter, requestedParallelism, res, resultType
 
Fields inherited from class org.apache.pig.impl.plan.Operator
mKey
 
Constructor Summary
POStore(OperatorKey k)
           
POStore(OperatorKey k, int rp)
           
POStore(OperatorKey k, int rp, List<PhysicalOperator> inp)
           
 
Method Summary
 void cleanUp()
          To perform cleanup when there is an error.
 boolean disableCounter()
           
 int getIndex()
           
 FileSpec getInputSpec()
           
 Result getNext(Tuple t)
           
 Schema getSchema()
           
 FileSpec getSFile()
           
 String getSignature()
           
 SortInfo getSortInfo()
           
 StoreFuncInterface getStoreFunc()
           
 Tuple illustratorMarkup(Object in, Object out, int eqClassIndex)
          input tuple mark up to be illustrate-able
 boolean isMultiStore()
           
 boolean isTmpStore()
           
 String name()
           
 void setDisableCounter(boolean disableCounter)
           
 void setIndex(int index)
           
 void setInputSpec(FileSpec lFile)
           
 void setIsTmpStore(boolean tmp)
           
 void setMultiStore(boolean isMultiStore)
           
 void setSchema(Schema schema)
           
 void setSFile(FileSpec sFile)
           
 void setSignature(String signature)
           
 void setSortInfo(SortInfo sortInfo)
           
 void setStoreImpl(POStoreImpl impl)
           
 void setUp()
          Set up the storer
 boolean supportsMultipleInputs()
          Indicates whether this operator supports multiple inputs.
 boolean supportsMultipleOutputs()
          Indicates whether this operator supports multiple outputs.
 void tearDown()
          Called at the end of processing for clean up.
 void visit(PhyPlanVisitor v)
          Visit this node with the provided visitor.
 
Methods inherited from class org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator
attachInput, clone, cloneHelper, detachInput, getAlias, getAliasString, getDummy, getIllustrator, getInputs, getLogger, getNext, getNext, getNext, getNext, getNext, getNext, getNext, getNext, getNext, getNext, getPigLogger, getRequestedParallelism, getResultType, isAccumStarted, isAccumulative, isBlocking, isInputAttached, processInput, reset, setAccumEnd, setAccumStart, setAccumulative, setAlias, setIllustrator, setInputs, setParentPlan, setPigLogger, setReporter, setRequestedParallelism, setResultType
 
Methods inherited from class org.apache.pig.impl.plan.Operator
compareTo, equals, getOperatorKey, getProjectionMap, hashCode, regenerateProjectionMap, rewire, toString, unsetProjectionMap
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

POStore

public POStore(OperatorKey k)

POStore

public POStore(OperatorKey k,
               int rp)

POStore

public POStore(OperatorKey k,
               int rp,
               List<PhysicalOperator> inp)
Method Detail

setUp

public void setUp()
           throws IOException
Set up the storer

Throws:
IOException

tearDown

public void tearDown()
              throws IOException
Called at the end of processing for clean up.

Throws:
IOException

cleanUp

public void cleanUp()
             throws IOException
To perform cleanup when there is an error.

Throws:
IOException

getNext

public Result getNext(Tuple t)
               throws ExecException
Overrides:
getNext in class PhysicalOperator
Throws:
ExecException

name

public String name()
Specified by:
name in class Operator<PhyPlanVisitor>

supportsMultipleInputs

public boolean supportsMultipleInputs()
Description copied from class: Operator
Indicates whether this operator supports multiple inputs.

Specified by:
supportsMultipleInputs in class Operator<PhyPlanVisitor>
Returns:
true if it does, otherwise false.

supportsMultipleOutputs

public boolean supportsMultipleOutputs()
Description copied from class: Operator
Indicates whether this operator supports multiple outputs.

Specified by:
supportsMultipleOutputs in class Operator<PhyPlanVisitor>
Returns:
true if it does, otherwise false.

visit

public void visit(PhyPlanVisitor v)
           throws VisitorException
Description copied from class: Operator
Visit this node with the provided visitor. This should only be called by the visitor class itself, never directly.

Specified by:
visit in class PhysicalOperator
Parameters:
v - Visitor to visit with.
Throws:
VisitorException - if the visitor has a problem.

getSFile

public FileSpec getSFile()

setSFile

public void setSFile(FileSpec sFile)

setInputSpec

public void setInputSpec(FileSpec lFile)

getInputSpec

public FileSpec getInputSpec()

setIsTmpStore

public void setIsTmpStore(boolean tmp)

isTmpStore

public boolean isTmpStore()

setStoreImpl

public void setStoreImpl(POStoreImpl impl)

setSchema

public void setSchema(Schema schema)

getSchema

public Schema getSchema()

getStoreFunc

public StoreFuncInterface getStoreFunc()

setSortInfo

public void setSortInfo(SortInfo sortInfo)
Parameters:
sortInfo - the sortInfo to set

getSortInfo

public SortInfo getSortInfo()
Returns:
the sortInfo

getSignature

public String getSignature()

setSignature

public void setSignature(String signature)

setMultiStore

public void setMultiStore(boolean isMultiStore)

isMultiStore

public boolean isMultiStore()

illustratorMarkup

public Tuple illustratorMarkup(Object in,
                               Object out,
                               int eqClassIndex)
Description copied from interface: Illustrable
input tuple mark up to be illustrate-able

Parameters:
in - input tuple
out - output tuple before wrapped in ExampleTuple
eqClassIndex - index into equivalence classes in illustrator
Returns:
tuple

setIndex

public void setIndex(int index)

getIndex

public int getIndex()

setDisableCounter

public void setDisableCounter(boolean disableCounter)

disableCounter

public boolean disableCounter()


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