Package com.querydsl.core.support

Class PathsExtractor

java.lang.Object

com.querydsl.core.support.PathsExtractor

All Implemented Interfaces:

Visitor<Void,List<Path<?>>>

public final class PathsExtractor
extends Object
implements Visitor<Void,List<Path<?>>>

Extracts the paths that occurs in an expression via breadth first search

Author:

tiwe

Field Summary

Fields

Modifier and Type	Field	Description
static final PathsExtractor	DEFAULT

Method Summary

Modifier and Type	Method	Description
Void	visit(Constant<?> expr, List<Path<?>> paths)	Visit a Constant instance with the given context
Void	visit(FactoryExpression<?> expr, List<Path<?>> paths)	Visit a FactoryExpression instance with the given context
Void	visit(Operation<?> expr, List<Path<?>> paths)	Visit an Operation instance with the given context
Void	visit(ParamExpression<?> expr, List<Path<?>> paths)	Visit a ParamExpression instance with the given context
Void	visit(Path<?> expr, List<Path<?>> paths)	Visit a Path instance with the given context
Void	visit(SubQueryExpression<?> expr, List<Path<?>> paths)	Visit a SubQueryExpression instance with the given context
Void	visit(TemplateExpression<?> expr, List<Path<?>> paths)	Visit a TemplateExpression instance with the given context
Path<?>	visit(Collection<?> exprs, List<Path<?>> paths)

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT

public static final PathsExtractor DEFAULT

Method Details

visit

public Void visit(Constant<?> expr,
 List<Path<?>> paths)

Description copied from interface: Visitor

Visit a Constant instance with the given context

Specified by:

visit in interface Visitor<Void,List<Path<?>>>

Parameters:

expr - expression to visit

paths - context of the visit or null, if not used

Returns:

visit result

visit

public Void visit(FactoryExpression<?> expr,
 List<Path<?>> paths)

Description copied from interface: Visitor

Visit a FactoryExpression instance with the given context

Specified by:

visit in interface Visitor<Void,List<Path<?>>>

Parameters:

expr - expression to visit

paths - context of the visit or null, if not used

Returns:

visit result

visit

public Void visit(Operation<?> expr,
 List<Path<?>> paths)

Description copied from interface: Visitor

Visit an Operation instance with the given context

Specified by:

visit in interface Visitor<Void,List<Path<?>>>

Parameters:

expr - expression to visit

paths - context of the visit or null, if not used

Returns:

visit result

visit

public Void visit(ParamExpression<?> expr,
 List<Path<?>> paths)

Description copied from interface: Visitor

Visit a ParamExpression instance with the given context

Specified by:

visit in interface Visitor<Void,List<Path<?>>>

Parameters:

expr - expression to visit

paths - context of the visit or null, if not used

Returns:

visit result

visit

public Void visit(Path<?> expr,
 List<Path<?>> paths)

Description copied from interface: Visitor

Visit a Path instance with the given context

Specified by:

visit in interface Visitor<Void,List<Path<?>>>

Parameters:

expr - expression to visit

paths - context of the visit or null, if not used

Returns:

visit result

visit

public Void visit(SubQueryExpression<?> expr,
 List<Path<?>> paths)

Description copied from interface: Visitor

Visit a SubQueryExpression instance with the given context

Specified by:

visit in interface Visitor<Void,List<Path<?>>>

Parameters:

expr - expression to visit

paths - context of the visit or null, if not used

Returns:

visit result

visit

public Void visit(TemplateExpression<?> expr,
 List<Path<?>> paths)

Description copied from interface: Visitor

Visit a TemplateExpression instance with the given context

Specified by:

visit in interface Visitor<Void,List<Path<?>>>

Parameters:

expr - expression to visit

paths - context of the visit or null, if not used

Returns:

visit result

visit

public Path<?> visit(Collection<?> exprs,
 List<Path<?>> paths)