Expression visitor interface that allows traversal of an Expression or a Condition. More...

#include <luciad/expressions/IExpressionVisitor.h>

Public Member Functions
virtual	~IExpressionVisitor ()=default

virtual void	visitAnd (const std::vector< Expression > &conditions)=0
	Visits a logical `and` operation. More...

virtual void	visitBBox (const Expression &expression)=0
	Visits a bbox expression. More...

virtual void	visitBBox (const Expression &left, const Expression &right)=0
	Visits a bbox expression. More...

virtual void	visitEqual (const Expression &left, const Expression &right)=0
	Visits an 'equal' condition. More...

virtual void	visitGt (const Expression &left, const Expression &right)=0
	Visits a 'greater than' condition. More...

virtual void	visitGte (const Expression &left, const Expression &right)=0
	Visits a 'greater than or equal' condition. More...

virtual void	visitLike (const std::string &propertyPath, const std::string &pattern, bool matchCase, char wildCard, char singleChar, char escapeChar)=0
	Visits a like expression. More...

virtual void	visitLiteral (const ExpressionValue &value)=0
	Visits a 'literal' value. More...

virtual void	visitLt (const Expression &left, const Expression &right)=0
	Visits a 'less than' condition. More...

virtual void	visitLte (const Expression &left, const Expression &right)=0
	Visits a 'less than or equal' condition. More...

virtual void	visitNot (const Expression &condition)=0
	Visits a logical 'not' operation. More...

virtual void	visitNotEqual (const Expression &left, const Expression &right)=0
	Visits a 'not equal' condition. More...

virtual void	visitOr (const std::vector< Expression > &conditions)=0
	Visits a logical `or` operation. More...

virtual void	visitValueReference (const std::string &propertyPath)=0
	Visits a reference to a property. More...

Detailed Description

Expression visitor interface that allows traversal of an Expression or a Condition.

The responsibility for the traversal algorithm is within the visitor. Have a look at Expressions and Conditions section for an example.

Constructor & Destructor Documentation

◆ ~IExpressionVisitor()

virtual luciad::IExpressionVisitor::~IExpressionVisitor ( )

virtualdefault

Member Function Documentation

◆ visitAnd()

virtual void luciad::IExpressionVisitor::visitAnd ( const std::vector< Expression > & conditions )

pure virtual

Visits a logical and operation.

Parameters

conditions the list of conditions.

See also: ExpressionFactory::andOp

◆ visitBBox() [1/2]

virtual void luciad::IExpressionVisitor::visitBBox ( const Expression & expression )

pure virtual

Visits a bbox expression.

Parameters

expression expression that evaluates to a bounding box.

See also: ExpressionFactory::bbox(Expression)

◆ visitBBox() [2/2]

virtual void luciad::IExpressionVisitor::visitBBox	(	const Expression &	left,
		const Expression &	right
	)

pure virtual

Visits a bbox expression.

Parameters

left	the `left` expression.
right	the `right` expression.

See also: ExpressionFactory::bbox(Expression,Expression)

◆ visitEqual()

virtual void luciad::IExpressionVisitor::visitEqual	(	const Expression &	left,
		const Expression &	right
	)

pure virtual

Visits an 'equal' condition.

Parameters

left	the `left` expression.
right	the `right` expression.

See also: ExpressionFactory::equal

◆ visitGt()

virtual void luciad::IExpressionVisitor::visitGt	(	const Expression &	left,
		const Expression &	right
	)

pure virtual

Visits a 'greater than' condition.

Parameters

left	the `left` expression.
right	the `right` expression.

See also: ExpressionFactory::gt

◆ visitGte()

virtual void luciad::IExpressionVisitor::visitGte	(	const Expression &	left,
		const Expression &	right
	)

pure virtual

Visits a 'greater than or equal' condition.

Parameters

left	the `left` expression.
right	the `right` expression.

See also: ExpressionFactory::gte

◆ visitLike()

virtual void luciad::IExpressionVisitor::visitLike	(	const std::string &	propertyPath,
		const std::string &	pattern,
		bool	matchCase,
		char	wildCard,
		char	singleChar,
		char	escapeChar
	)

pure virtual

Visits a like expression.

Parameters

propertyPath	Path for the property whose value needs to be retrieved.
pattern	The pattern to match.
matchCase	Whether to match case sensitive or case insensitive.
wildCard	The character used as wild card to match zero or more characters.
singleChar	The character used as single character to match exactly one character.
escapeChar	The character used to escape the meaning of the `wildCard`, `singleChar` and `escapeChar` itself.

Since: 2023.1

See also: ExpressionFactory::like

◆ visitLiteral()

virtual void luciad::IExpressionVisitor::visitLiteral ( const ExpressionValue & value )

pure virtual

Visits a 'literal' value.

Parameters

value the literal value.

See also: ExpressionFactory::literal

◆ visitLt()

virtual void luciad::IExpressionVisitor::visitLt	(	const Expression &	left,
		const Expression &	right
	)

pure virtual

Visits a 'less than' condition.

Parameters

left	the `left` expression.
right	the `right` expression.

See also: ExpressionFactory::lt

◆ visitLte()

virtual void luciad::IExpressionVisitor::visitLte	(	const Expression &	left,
		const Expression &	right
	)

pure virtual

Visits a 'less than or equal' condition.

Parameters

left	the `left` expression.
right	the `right` expression.

See also: ExpressionFactory::lte

◆ visitNot()

virtual void luciad::IExpressionVisitor::visitNot ( const Expression & condition )

pure virtual

Visits a logical 'not' operation.

Parameters

condition the condition that is inverted.

See also: ExpressionFactory::notOp

◆ visitNotEqual()

virtual void luciad::IExpressionVisitor::visitNotEqual	(	const Expression &	left,
		const Expression &	right
	)

pure virtual

Visits a 'not equal' condition.

Parameters

left	the `left` expression.
right	the `right` expression.

See also: ExpressionFactory::notEqual

◆ visitOr()

virtual void luciad::IExpressionVisitor::visitOr ( const std::vector< Expression > & conditions )

pure virtual

Visits a logical or operation.

Parameters

conditions the list of conditions.

See also: ExpressionFactory::orOp

◆ visitValueReference()

virtual void luciad::IExpressionVisitor::visitValueReference ( const std::string & propertyPath )

pure virtual

Visits a reference to a property.

Parameters

propertyPath the path to the property.

See also: ExpressionFactory::valueReference

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ ~IExpressionVisitor()

Member Function Documentation

◆ visitAnd()

◆ visitBBox() [1/2]

◆ visitBBox() [2/2]

◆ visitEqual()

◆ visitGt()

◆ visitGte()

◆ visitLike()

◆ visitLiteral()

◆ visitLt()

◆ visitLte()

◆ visitNot()

◆ visitNotEqual()

◆ visitOr()

◆ visitValueReference()