org.h2.bnf

Class RuleOptional

java.lang.Object

org.h2.bnf.RuleOptional

All Implemented Interfaces:

Rule

public class RuleOptional
extends java.lang.Object
implements Rule

Represents an optional BNF rule.

Constructor Summary

Constructors

Constructor and Description
RuleOptional(Rule rule)

Method Summary

Modifier and Type	Method and Description
void	accept(BnfVisitor visitor) Call the visit method in the given visitor.
boolean	autoComplete(Sentence sentence) Add the next possible token(s).
void	setLinks(java.util.HashMap<java.lang.String,RuleHead> ruleMap) Update cross references.

Methods inherited from class java.lang.Object

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

Constructor Detail

RuleOptional

public RuleOptional(Rule rule)

Method Detail

accept

public void accept(BnfVisitor visitor)

Description copied from interface: Rule

Call the visit method in the given visitor.

Specified by:

accept in interface Rule

Parameters:

visitor - the visitor

setLinks

public void setLinks(java.util.HashMap<java.lang.String,RuleHead> ruleMap)

Description copied from interface: Rule

Update cross references.

Specified by:

setLinks in interface Rule

Parameters:

ruleMap - the reference map

autoComplete

public boolean autoComplete(Sentence sentence)

Description copied from interface: Rule

Add the next possible token(s). If there was a match, the query in the sentence is updated (the matched token is removed).

Specified by:

autoComplete in interface Rule

Parameters:

sentence - the sentence context

Returns:

true if a full match