org.apache.pig.experimental.logical.relational
Class LOLoad

java.lang.Object
  extended by org.apache.pig.experimental.plan.Operator
      extended by org.apache.pig.experimental.logical.relational.LogicalRelationalOperator
          extended by org.apache.pig.experimental.logical.relational.LOLoad

public class LOLoad
extends LogicalRelationalOperator


Field Summary
 
Fields inherited from class org.apache.pig.experimental.logical.relational.LogicalRelationalOperator
alias, lineNum, requestedParallelism, schema
 
Fields inherited from class org.apache.pig.experimental.plan.Operator
annotations, hashPrime, name, plan
 
Constructor Summary
LOLoad(FileSpec loader, LogicalSchema schema, LogicalPlan plan)
           
 
Method Summary
 void accept(PlanVisitor v)
          Accept a visitor at this node in the graph.
 FileSpec getFileSpec()
           
 LoadFunc getLoadFunc()
           
 LogicalSchema getSchema()
          Get the schema for this load.
 boolean isEqual(Operator other)
          This is like a shallow equals comparison.
 void setScriptSchema(LogicalSchema schema)
           
 
Methods inherited from class org.apache.pig.experimental.logical.relational.LogicalRelationalOperator
checkEquality, getAlias, getLineNumber, getRequestedParallelisam, neverUseForRealSetSchema, resetSchema, setAlias, setRequestedParallelism, toString
 
Methods inherited from class org.apache.pig.experimental.plan.Operator
annotate, getAnnotation, getName, getPlan, removeAnnotation
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

LOLoad

public LOLoad(FileSpec loader,
              LogicalSchema schema,
              LogicalPlan plan)
Parameters:
loader - FuncSpec for load function to use for this load.
schema - schema user specified in script, or null if not specified.
plan - logical plan this load is part of.
Method Detail

getLoadFunc

public LoadFunc getLoadFunc()

setScriptSchema

public void setScriptSchema(LogicalSchema schema)

getSchema

public LogicalSchema getSchema()
Get the schema for this load. The schema will be either be what was given by the user in the script or what the load functions getSchema call returned. Otherwise null will be returned, indicating that the schema is unknown.

Specified by:
getSchema in class LogicalRelationalOperator
Returns:
schema, or null if unknown

getFileSpec

public FileSpec getFileSpec()

accept

public void accept(PlanVisitor v)
            throws IOException
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:
IOException

isEqual

public boolean isEqual(Operator other)
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


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