uk.ac.starlink.ttools.task
Class JoinMapper

java.lang.Object
  extended by uk.ac.starlink.ttools.task.JoinMapper
All Implemented Interfaces:
TableMapper

public class JoinMapper
extends Object
implements TableMapper

TableMapper which joins tables side-by-side. Rows are not rearranged.

Since:
28 Nov 2006
Author:
Mark Taylor

Constructor Summary
JoinMapper()
          Constructor.
 
Method Summary
 TableMapping createMapping(uk.ac.starlink.task.Environment env, int nin)
          Creates a new mapping object, using a given execution environment for any additional required state.
 uk.ac.starlink.task.Parameter[] getParameters()
          Returns the parameters defined by this mapper.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

JoinMapper

public JoinMapper()
Constructor.

Method Detail

getParameters

public uk.ac.starlink.task.Parameter[] getParameters()
Description copied from interface: TableMapper
Returns the parameters defined by this mapper.

Specified by:
getParameters in interface TableMapper
Returns:
parameter array

createMapping

public TableMapping createMapping(uk.ac.starlink.task.Environment env,
                                  int nin)
                           throws uk.ac.starlink.task.TaskException
Description copied from interface: TableMapper
Creates a new mapping object, using a given execution environment for any additional required state.

Specified by:
createMapping in interface TableMapper
Parameters:
env - execution environment
nin - number of input tables that the mapping will operate on if known; -1 if not
Throws:
uk.ac.starlink.task.TaskException


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