com.querydsl.core.types

Class PathExtractor

java.lang.Object

com.querydsl.core.types.PathExtractor

All Implemented Interfaces:

Visitor<Path<?>,Void>

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

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

Author:

tiwe

Field Summary

Fields

Modifier and Type	Field and Description
static PathExtractor	DEFAULT

Method Summary

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

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT

public static final PathExtractor DEFAULT

Method Detail

visit

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

Description copied from interface: Visitor

Visit a Constant instance with the given context

Specified by:

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

Parameters:

expr - expression to visit

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

Returns:

visit result

visit

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

Description copied from interface: Visitor

Visit a FactoryExpression instance with the given context

Specified by:

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

Parameters:

expr - expression to visit

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

Returns:

visit result

visit

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

Description copied from interface: Visitor

Visit an Operation instance with the given context

Specified by:

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

Parameters:

expr - expression to visit

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

Returns:

visit result

visit

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

Description copied from interface: Visitor

Visit a ParamExpression instance with the given context

Specified by:

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

Parameters:

expr - expression to visit

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

Returns:

visit result

visit

public Path<?> visit(Path<?> expr,
                     Void context)

Description copied from interface: Visitor

Visit a Path instance with the given context

Specified by:

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

Parameters:

expr - expression to visit

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

Returns:

visit result

visit

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

Description copied from interface: Visitor

Visit a SubQueryExpression instance with the given context

Specified by:

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

Parameters:

expr - expression to visit

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

Returns:

visit result

visit

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

Description copied from interface: Visitor

Visit a TemplateExpression instance with the given context

Specified by:

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

Parameters:

expr - expression to visit

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

Returns:

visit result