edu.udo.cs.yale.operator.io
Class ResultSetExampleSource

java.lang.Object
  edu.udo.cs.yale.operator.Operator
      edu.udo.cs.yale.operator.io.ResultSetExampleSource

All Implemented Interfaces:

ConfigurationListener

Direct Known Subclasses:

DatabaseExampleSource, KDBExampleSource

public abstract class ResultSetExampleSource
extends Operator

Abstract superclass for operators that provide access to an ExampleSet via a ResultSet.

Version:

$Id: ResultSetExampleSource.java,v 1.9 2006/03/27 13:22:01 ingomierswa Exp $

Author:

Simon Fischer, Ingo Mierswa

Field Summary

private static java.lang.Class[]	INPUT_CLASSES
private static java.lang.Class[]	OUTPUT_CLASSES

Constructor Summary

ResultSetExampleSource(OperatorDescription description)

Method Summary

IOObject[]	apply() Implement this method in subclasses.
protected ExampleSet	createExampleSet(ExampleTable table)
private static Attribute	find(java.util.List attributeList, java.lang.String name)
java.lang.Class[]	getInputClasses() Returns the classes that are needed as input.
java.lang.Class[]	getOutputClasses() Returns the classes that are guaranteed to be returned by apply() as additional output.
java.util.List<ParameterType>	getParameterTypes() Returns a list of ParameterTypes describing the parameters of this operator.
abstract java.sql.ResultSet	getResultSet() Returns a ResultSet.
abstract void	setNominalValues(java.util.List attributeList, java.sql.ResultSet resultSet, Attribute label) Since the ResultSet does not provide information about possible values of nominal attributes, subclasses must set these by implementing this method.

Methods inherited from class edu.udo.cs.yale.operator.Operator

addError, addValue, addWarning, apply, checkDeprecations, checkIO, checkProperties, clearErrorList, cloneOperator, createExperimentTree, createExperimentTree, createFromXML, createMarkedExperimentTree, delete, experimentFinished, experimentStarts, getAddOnlyAdditionalOutput, getApplyCount, getDeliveredOutputClasses, getDeprecationInfo, getDesiredInputClasses, getErrorList, getExperiment, getInnerOperatorsXML, getInput, getInput, getInput, getInputDescription, getIOContainerForInApplyLoopBreakpoint, getName, getNumberOfSteps, getOperatorClassName, getOperatorDescription, getParameter, getParameterAsBoolean, getParameterAsColor, getParameterAsDouble, getParameterAsFile, getParameterAsInt, getParameterAsString, getParameterList, getParameters, getParameterType, getParent, getStartTime, getStatus, getUserDescription, getValue, getValues, getXML, hasBreakpoint, hasBreakpoint, hasInput, inApplyLoop, isEnabled, isParameterSet, logMessage, performAdditionalChecks, register, remove, rename, resume, setBreakpoint, setEnabled, setExperiment, setInput, setListParameter, setOperatorParameters, setParameter, setParameters, setParent, setUserDescription, toString, writeXML

Methods inherited from class java.lang.Object

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

Field Detail

INPUT_CLASSES

private static final java.lang.Class[] INPUT_CLASSES

OUTPUT_CLASSES

private static final java.lang.Class[] OUTPUT_CLASSES

Constructor Detail

ResultSetExampleSource

public ResultSetExampleSource(OperatorDescription description)

Method Detail

getResultSet

public abstract java.sql.ResultSet getResultSet()
                                         throws OperatorException

Returns a ResultSet.

Throws:

OperatorException

setNominalValues

public abstract void setNominalValues(java.util.List attributeList,
                                      java.sql.ResultSet resultSet,
                                      Attribute label)
                               throws OperatorException

Since the ResultSet does not provide information about possible values of nominal attributes, subclasses must set these by implementing this method.

Parameters:

attributeList - List of Attribute

Throws:

OperatorException

apply

public IOObject[] apply()
                 throws OperatorException

Description copied from class: Operator

Implement this method in subclasses.

Specified by:

apply in class Operator

Throws:

OperatorException

find

private static Attribute find(java.util.List attributeList,
                              java.lang.String name)
                       throws OperatorException

Throws:

OperatorException

createExampleSet

protected ExampleSet createExampleSet(ExampleTable table)
                               throws OperatorException

Throws:

OperatorException

getInputClasses

public java.lang.Class[] getInputClasses()

Description copied from class: Operator

Returns the classes that are needed as input. May be null or an empty (no desired input). As default, all delivered input objects are consumed and must be also delivered as output in both Operator.getOutputClasses() and Operator.apply() if this is necessary. This default behavior can be changed by overriding Operator.getInputDescription(Class). Subclasses which implement this method should not make use of parameters since this method is invoked by getParameterTypes(). Therefore, parameters are not fully available at this point of time and this might lead to exceptions. Please use InputDescriptions instead.

Specified by:

getInputClasses in class Operator

getOutputClasses

public java.lang.Class[] getOutputClasses()

Description copied from class: Operator

Returns the classes that are guaranteed to be returned by apply() as additional output. Please note that input object which should not be consumed must also be defined by this method (e.g. for preprocessing operators). The default behavior for input consumation is defined by Operator.getInputDescription(Class) and can be changed by overwriting this method. Objects which are not consumed must not be defined as additional output in this method. May be null or an empy array (no additional output is produced).

Specified by:

getOutputClasses in class Operator

getParameterTypes

public java.util.List<ParameterType> getParameterTypes()

Description copied from class: Operator

Returns a list of ParameterTypes describing the parameters of this operator. The default implementation returns an empty list if no input objects can be retained and special parameters for those input objects which can be prevented from being consumed.

Overrides:

getParameterTypes in class Operator