org.apache.pig.newplan.logical.relational
Class LOStream

java.lang.Object
  org.apache.pig.newplan.Operator
      org.apache.pig.newplan.logical.relational.LogicalRelationalOperator
          org.apache.pig.newplan.logical.relational.LOStream

public class LOStream
extends LogicalRelationalOperator

Field Summary

Fields inherited from class org.apache.pig.newplan.logical.relational.LogicalRelationalOperator

alias, lineNum, mCustomPartitioner, mPinnedOptions, requestedParallelism, schema

Fields inherited from class org.apache.pig.newplan.Operator

annotations, hashPrime, location, name, plan

Constructor Summary

LOStream(LogicalPlan plan, ExecutableManager exeManager, StreamingCommand cmd, LogicalSchema schema)

Method Summary

void	accept(PlanVisitor v) Accept a visitor at this node in the graph.
ExecutableManager	getExecutableManager()
LogicalSchema	getSchema() Get the schema for the output of this relational operator.
LogicalSchema	getScriptSchema()
StreamingCommand	getStreamingCommand() Get the StreamingCommand object associated with this operator
boolean	isCastInserted()
boolean	isEqual(Operator other) This is like a shallow equals comparison.
void	resetUid() Erase all cached uid, regenerate uid when we regenerating schema.
void	setCastInserted(boolean flag)

Methods inherited from class org.apache.pig.newplan.logical.relational.LogicalRelationalOperator

checkEquality, getAlias, getCustomPartitioner, getLineNumber, getRequestedParallelisam, isPinnedOption, neverUseForRealSetSchema, pinOption, resetSchema, setAlias, setCustomPartitioner, setRequestedParallelism, setSchema, toString

Methods inherited from class org.apache.pig.newplan.Operator

annotate, getAnnotation, getLocation, getName, getPlan, removeAnnotation, setLocation, setPlan

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LOStream

public LOStream(LogicalPlan plan,
                ExecutableManager exeManager,
                StreamingCommand cmd,
                LogicalSchema schema)

Method Detail

getStreamingCommand

public StreamingCommand getStreamingCommand()

Get the StreamingCommand object associated with this operator

Returns:

the StreamingCommand object

getExecutableManager

public ExecutableManager getExecutableManager()

Returns:

the ExecutableManager

getSchema

public LogicalSchema getSchema()
                        throws FrontendException

Description copied from class: LogicalRelationalOperator

Get the schema for the output of this relational operator. This does not merely return the schema variable. If schema is not yet set, this will attempt to construct it. Therefore it is abstract since each operator will need to construct its schema differently.

Specified by:

getSchema in class LogicalRelationalOperator

Returns:

the schema

Throws:

FrontendException

accept

public void accept(PlanVisitor v)
            throws FrontendException

Description copied from class: Operator

Accept a visitor at this node in the graph.

Specified by:

accept in class Operator

Parameters:

v - Visitor to accept.

Throws:

FrontendException

isEqual

public boolean isEqual(Operator other)
                throws FrontendException

Description copied from class: Operator

This is like a shallow equals comparison. It returns true if two operators have equivalent properties even if they are different objects. Here properties mean equivalent plan and equivalent name.

Specified by:

isEqual in class Operator

Returns:

true if two object have equivalent properties, else false

Throws:

FrontendException

setCastInserted

public void setCastInserted(boolean flag)

isCastInserted

public boolean isCastInserted()

resetUid

public void resetUid()

Description copied from class: LogicalRelationalOperator

Erase all cached uid, regenerate uid when we regenerating schema. This process currently only used in ImplicitSplitInsert, which will insert split and invalidate some uids in plan

Overrides:

resetUid in class LogicalRelationalOperator

getScriptSchema

public LogicalSchema getScriptSchema()