Package org.h2.test.synth

Class BnfRandom

java.lang.Object

org.h2.test.synth.BnfRandom

All Implemented Interfaces:

BnfVisitor

public class BnfRandom
extends Object
implements BnfVisitor

A BNF visitor that generates a random SQL statement.

Constructor Summary

Constructors

Constructor	Description
BnfRandom()

Method Summary

Modifier and Type	Method	Description
String	getRandomSQL()
int	getStatementCount()
void	setSeed(int seed)
void	visitRuleElement(boolean keyword, String name, Rule link)	Visit a rule element.
void	visitRuleExtension(Rule rule, boolean compatibility)	Visit a rule with non-standard extension.
void	visitRuleFixed(int type)	Visit a fixed rule.
void	visitRuleList(boolean or, ArrayList<Rule> list)	Visit a rule list.
void	visitRuleOptional(ArrayList<Rule> list)	Visit an OR list of optional rules.
void	visitRuleOptional(Rule rule)	Visit an optional rule.
void	visitRuleRepeat(boolean comma, Rule rule)	Visit a repeat rule.

Methods inherited from class java.lang.Object

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

Constructor Details

BnfRandom

public BnfRandom()
          throws Exception

Throws:

Exception

Method Details

getRandomSQL

public String getRandomSQL()

visitRuleElement

public void visitRuleElement(boolean keyword,
 String name,
 Rule link)

Description copied from interface: BnfVisitor

Visit a rule element.

Specified by:

visitRuleElement in interface BnfVisitor

Parameters:

keyword - whether this is a keyword

name - the element name

link - the linked rule if it's not a keyword

visitRuleFixed

public void visitRuleFixed(int type)

Description copied from interface: BnfVisitor

Visit a fixed rule.

Specified by:

visitRuleFixed in interface BnfVisitor

Parameters:

type - the type

visitRuleList

public void visitRuleList(boolean or,
 ArrayList<Rule> list)

Description copied from interface: BnfVisitor

Visit a rule list.

Specified by:

visitRuleList in interface BnfVisitor

Parameters:

or - true for OR, false for AND

list - the rules

visitRuleOptional

public void visitRuleOptional(Rule rule)

Description copied from interface: BnfVisitor

Visit an optional rule.

Specified by:

visitRuleOptional in interface BnfVisitor

Parameters:

rule - the rule

visitRuleOptional

public void visitRuleOptional(ArrayList<Rule> list)

Description copied from interface: BnfVisitor

Visit an OR list of optional rules.

Specified by:

visitRuleOptional in interface BnfVisitor

Parameters:

list - the optional rules

visitRuleRepeat

public void visitRuleRepeat(boolean comma,
 Rule rule)

Description copied from interface: BnfVisitor

Visit a repeat rule.

Specified by:

visitRuleRepeat in interface BnfVisitor

Parameters:

comma - whether the comma is repeated as well

rule - the element to repeat

visitRuleExtension

public void visitRuleExtension(Rule rule,
 boolean compatibility)

Description copied from interface: BnfVisitor

Visit a rule with non-standard extension.

Specified by:

visitRuleExtension in interface BnfVisitor

Parameters:

rule - the rule

compatibility - whether this rule exists for compatibility only

setSeed

public void setSeed(int seed)

getStatementCount

public int getStatementCount()