com.atlassian.jira.jql.clause

Class DeMorgansVisitor

java.lang.Object

com.atlassian.jira.jql.clause.DeMorgansVisitor

All Implemented Interfaces:

ClauseVisitor<Clause>

@NotThreadSafe
public class DeMorgansVisitor
extends Object
implements ClauseVisitor<Clause>

Expands the not clauses in a clause tree using DeMorgans law and flips the operators to remove the not alltogether when possible.

Since:

v4.0

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DeMorgansVisitor.DeMorgansVisitorFactory

Constructor Summary

Constructors

Constructor and Description
DeMorgansVisitor()

Method Summary

Modifier and Type	Method and Description
Clause	visit(AndClause andClause) Visit called when accepting a AndClause.
Clause	visit(ChangedClause clause) Visit called when accepting a ChangedClause.
Clause	visit(NotClause notClause) Visit called when accepting a NotClause.
Clause	visit(OrClause orClause) Visit called when accepting a OrClause.
Clause	visit(TerminalClause terminalClause) Visit called when accepting a TerminalClause.
Clause	visit(WasClause clause) Visit called when accepting a WasClause.

Methods inherited from class java.lang.Object

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

Constructor Detail

DeMorgansVisitor

public DeMorgansVisitor()

Method Detail

visit

public Clause visit(NotClause notClause)

Description copied from interface: ClauseVisitor

Visit called when accepting a NotClause.

Specified by:

visit in interface ClauseVisitor<Clause>

Parameters:

notClause - the node being visited.

Returns:

The return type specified by the visitor.

visit

public Clause visit(AndClause andClause)

Description copied from interface: ClauseVisitor

Visit called when accepting a AndClause.

Specified by:

visit in interface ClauseVisitor<Clause>

Parameters:

andClause - the node being visited.

Returns:

The return type specified by the visitor.

visit

public Clause visit(OrClause orClause)

Description copied from interface: ClauseVisitor

Visit called when accepting a OrClause.

Specified by:

visit in interface ClauseVisitor<Clause>

Parameters:

orClause - the node being visited.

Returns:

The return type specified by the visitor.

visit

public Clause visit(TerminalClause terminalClause)

Description copied from interface: ClauseVisitor

Visit called when accepting a TerminalClause.

Specified by:

visit in interface ClauseVisitor<Clause>

Parameters:

terminalClause - the node being visited.

Returns:

The return type specified by the visitor.

visit

public Clause visit(WasClause clause)

Description copied from interface: ClauseVisitor

Visit called when accepting a WasClause.

Specified by:

visit in interface ClauseVisitor<Clause>

Parameters:

clause - the node being visited.

Returns:

The return type specified by the visitor.

visit

public Clause visit(ChangedClause clause)

Description copied from interface: ClauseVisitor

Visit called when accepting a ChangedClause.

Specified by:

visit in interface ClauseVisitor<Clause>

Parameters:

clause - the node being visited.

Returns:

The return type specified by the visitor.