edu.udo.cs.yale.example
Class ConditionExampleReader

java.lang.Object
  edu.udo.cs.yale.example.AbstractExampleReader
      edu.udo.cs.yale.example.ConditionExampleReader

All Implemented Interfaces:

ExampleReader, java.util.Iterator<Example>

public class ConditionExampleReader
extends AbstractExampleReader

This ExampleReader skips all examples that do not fulfil a specified Condition.

Version:

$Id: ConditionExampleReader.java,v 2.17 2006/03/21 15:35:39 ingomierswa Exp $

Author:

Simon Fischer, Ingo Mierswa

Field Summary

private Condition	condition The used condition.
private Example	currentExample The example that will be returned by the next invocation of next().
static java.lang.String[]	KNOWN_CONDITION_IMPLEMENTATIONS Array of fully qualified classnames of implementations of Condition that are useful independently of special applications.
static java.lang.String[]	KNOWN_CONDITION_NAMES Array of short names for the known conditions.
private java.util.Iterator<Example>	parent The example reader that provides a complete example set.

Constructor Summary

ConditionExampleReader(java.util.Iterator<Example> parent, Condition condition)
Constructs a new ConditionExampleReader the next() method of which returns only examples that fulfil a specified condition.

Method Summary

static Condition	createCondition(java.lang.String name, ExampleSet exampleSet, java.lang.String parameterString) Checks if the given name is the short name of a known condition and creates it.
boolean	hasNext()
Example	next()

Methods inherited from class edu.udo.cs.yale.example.AbstractExampleReader

remove

Methods inherited from class java.lang.Object

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

Field Detail

KNOWN_CONDITION_NAMES

public static final java.lang.String[] KNOWN_CONDITION_NAMES

Array of short names for the known conditions.

KNOWN_CONDITION_IMPLEMENTATIONS

public static final java.lang.String[] KNOWN_CONDITION_IMPLEMENTATIONS

Array of fully qualified classnames of implementations of Condition that are useful independently of special applications. All conditions given here must provide a construtor with arguments (ExampleSet data, String parameters).

parent

private java.util.Iterator<Example> parent

The example reader that provides a complete example set.

condition

private Condition condition

The used condition.

currentExample

private Example currentExample

The example that will be returned by the next invocation of next().

Constructor Detail

ConditionExampleReader

public ConditionExampleReader(java.util.Iterator<Example> parent,
                              Condition condition)

Constructs a new ConditionExampleReader the next() method of which returns only examples that fulfil a specified condition.

Method Detail

hasNext

public boolean hasNext()

next

public Example next()

createCondition

public static Condition createCondition(java.lang.String name,
                                        ExampleSet exampleSet,
                                        java.lang.String parameterString)
                                 throws ConditionCreationException

Checks if the given name is the short name of a known condition and creates it. If the name is not known, this method creates a new instance of className which must be an implementation of Condition by calling its two argument constructor passing it the example set and the parameter string

Throws:

ConditionCreationException