sosscli::QueryExpression::Visitor Class Reference

The QueryExpression visitor base class. More...

#include <query_expression.h>

Public Member Functions
virtual	~Visitor ()
	Destructor.
virtual void	visit (ValueComparand const &v)
	The visitor instance has reached a ValueComparand within the expression tree. More...
virtual void	visit (ReferenceComparand const &r)
	The visitor instance has reached a ReferenceComparand instance within the expression tree. More...
virtual void	visit (internal::ComparisonExpression const &c)
	The visitor instance has reached a internal::ComparisonExpression instance within the expression tree. More...
virtual void	visit (internal::StringContainsExpression const &s)
	The visitor instance has reached a internal::StringContainsExpression instance within the expression tree. More...
virtual void	visit (internal::AndExpression const &a)
	The visitor instance has reached an internal::AndExpression within the expression tree. More...
virtual void	visit (internal::OrExpression const &o)
	The visitor instance has reached an internal::OrExpression within the expression tree. More...
virtual void	visit (internal::EqualsExpression const &e)
	The visitor instance has reached an internal::EqualsExpression within the expression tree. More...
virtual void	visit (internal::NotExpression const &n)
	The visitor instance has reached a internal::NotExpression within the expression tree. More...

Detailed Description

The QueryExpression visitor base class.

QueryExpression visitors should subclass this class and override the virtual member functions as needed. The base class implementation simply traverses through the expression tree. QueryExpression subclasses are required to implement the abstract method QueryExpression::accept.

To visit the nodes in a Filter expression, simply call Filter::accept with an instance of your

QueryExpression::Visitor subclass.

See Also

ValueComparand

ReferenceComparand

Filter

Member Function Documentation

virtual void sosscli::QueryExpression::Visitor::visit ( ValueComparand const &  v)

virtual

The visitor instance has reached a ValueComparand within the expression tree.

Parameters

v	A ValueComparand node to visit

virtual void sosscli::QueryExpression::Visitor::visit ( ReferenceComparand const &  r)

virtual

The visitor instance has reached a ReferenceComparand instance within the expression tree.

Parameters

r	A ReferenceComparand node to visit

virtual void sosscli::QueryExpression::Visitor::visit ( internal::ComparisonExpression const &  c)

virtual

The visitor instance has reached a internal::ComparisonExpression instance within the expression tree.

Parameters

c	A internal::ComparisonExpression node to visit

virtual void sosscli::QueryExpression::Visitor::visit ( internal::StringContainsExpression const &  s)

virtual

The visitor instance has reached a internal::StringContainsExpression instance within the expression tree.

Parameters

s	A internal::StringContainsExpression node to visit

virtual void sosscli::QueryExpression::Visitor::visit ( internal::AndExpression const &  a)

virtual

The visitor instance has reached an internal::AndExpression within the expression tree.

Parameters

a	An internal::AndExpression node to visit

virtual void sosscli::QueryExpression::Visitor::visit ( internal::OrExpression const &  o)

virtual

The visitor instance has reached an internal::OrExpression within the expression tree.

Parameters

o	An internal::OrExpression node to visit

virtual void sosscli::QueryExpression::Visitor::visit ( internal::EqualsExpression const &  e)

virtual

The visitor instance has reached an internal::EqualsExpression within the expression tree.

Parameters

e	An internal::EqualsExpression node to visit

virtual void sosscli::QueryExpression::Visitor::visit ( internal::NotExpression const &  n)

virtual

The visitor instance has reached a internal::NotExpression within the expression tree.

Parameters

n	A internal::NotExpression node to visit

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The documentation for this class was generated from the following file:

• include/soss_client/query_expression.h