com.yahoo.prelude.semantics.rule

Class CompositeCondition

java.lang.Object

com.yahoo.prelude.semantics.rule.Condition

com.yahoo.prelude.semantics.rule.CompositeCondition

Direct Known Subclasses:

AndCondition, ChoiceCondition, ComparisonCondition, CompositeItemCondition, SequenceCondition

public abstract class CompositeCondition
extends Condition

A condition which contains a list of conditions

Author:

bratseth

Nested Class Summary

Nested classes/interfaces inherited from class com.yahoo.prelude.semantics.rule.Condition

Condition.Anchor

Field Summary

Fields

Modifier and Type	Field and Description
private List<Condition>	conditions

Constructor Summary

Constructors

Constructor and Description
CompositeCondition()

Method Summary

Modifier and Type	Method and Description
void	addCondition(Condition condition)
protected boolean	allSubConditionsMatches(RuleEvaluation e) Returns whether all the conditions of this matches the current evaluation state
Iterator<Condition>	conditionIterator() Returns an iterator of the immediate children of this condition
int	conditionSize() Returns the number of subconditions
protected String	conditionsToString(String conditionSeparator)
Condition	getCondition(int i) Returns the condition at the given index
protected boolean	hasOpenChoicepoint(RuleEvaluation evaluation) Returns whether there is an open choice in this or any of its subconditions.
void	makeReferences(RuleBase rules) Override if references needs to be set in this condition of its children
void	postMatchHook(RuleEvaluation e) Called just before match returns, on any return condition including exceptions.
void	preMatchHook(RuleEvaluation e) Called when match is called, before anything else.
Condition	removeCondition(int i) Returns the condition at the given index
void	setCondition(int index, Condition condition) Sets the condition at the given index
protected String	toInnerString(String conditionSeparator)
protected boolean	useParentheses() Whether this should be output with parentheses, default is parent!=null

Methods inherited from class com.yahoo.prelude.semantics.rule.Condition

doesMatch, getAnchor, getContextName, getLabel, getLabelString, getMatchInfo, getMatchInfoString, getNameSpace, getParent, isDefaultContextName, isReferable, labelMatches, labelMatches, matches, matchesEndAnchor, matchesStartAnchor, setAnchor, setContextName, setLabel, setNameSpace, setParent, toInnerString, toString, traceResult

Methods inherited from class java.lang.Object

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

Field Detail

conditions

private List<Condition> conditions

Constructor Detail

CompositeCondition

public CompositeCondition()

Method Detail

preMatchHook

public void preMatchHook(RuleEvaluation e)

Description copied from class: Condition

Called when match is called, before anything else. Always call super.preMatchHook when overriding.

Overrides:

preMatchHook in class Condition

postMatchHook

public void postMatchHook(RuleEvaluation e)

Description copied from class: Condition

Called just before match returns, on any return condition including exceptions. Always call super.postMatchHook when overriding

Overrides:

postMatchHook in class Condition

hasOpenChoicepoint

protected boolean hasOpenChoicepoint(RuleEvaluation evaluation)

Description copied from class: Condition

Returns whether there is an open choice in this or any of its subconditions. Returns false by default, must be overriden by conditions which may generate choices open accross multiple calls to matches, or contain such conditions.

Overrides:

hasOpenChoicepoint in class Condition

addCondition

public void addCondition(Condition condition)

setCondition

public void setCondition(int index,
                         Condition condition)

Sets the condition at the given index

conditionSize

public int conditionSize()

Returns the number of subconditions

getCondition

public Condition getCondition(int i)

Returns the condition at the given index

Parameters:

i - the 0-base index

Returns:

the condition at this index

Throws:

IndexOutOfBoundsException - if there is no condition at this index

removeCondition

public Condition removeCondition(int i)

Returns the condition at the given index

Parameters:

i - the 0-base index

Returns:

the removed condition

Throws:

IndexOutOfBoundsException - if there is no condition at this index

conditionIterator

public Iterator<Condition> conditionIterator()

Returns an iterator of the immediate children of this condition

makeReferences

public void makeReferences(RuleBase rules)

Description copied from class: Condition

Override if references needs to be set in this condition of its children

Overrides:

makeReferences in class Condition

useParentheses

protected boolean useParentheses()

Whether this should be output with parentheses, default is parent!=null

toInnerString

protected String toInnerString(String conditionSeparator)

conditionsToString

protected final String conditionsToString(String conditionSeparator)

allSubConditionsMatches

protected final boolean allSubConditionsMatches(RuleEvaluation e)

Returns whether all the conditions of this matches the current evaluation state