QgsSQLStatement::Visitor class

Support for visitor pattern - algorithms dealing with the statement may be implemented without modifying the Node classes.

Derived classes

class RecursiveVisitor

A visitor that recursively explores all children.

Public functions

void visit(const QgsSQLStatement::NodeUnaryOperator& n) pure virtual

Visit NodeUnaryOperator.

void visit(const QgsSQLStatement::NodeBinaryOperator& n) pure virtual

Visit NodeBinaryOperator.

void visit(const QgsSQLStatement::NodeInOperator& n) pure virtual

Visit NodeInOperator.

void visit(const QgsSQLStatement::NodeBetweenOperator& n) pure virtual

Visit NodeBetweenOperator.

void visit(const QgsSQLStatement::NodeFunction& n) pure virtual

Visit NodeFunction.

void visit(const QgsSQLStatement::NodeLiteral& n) pure virtual

Visit NodeLiteral.

void visit(const QgsSQLStatement::NodeColumnRef& n) pure virtual

Visit NodeColumnRef.

void visit(const QgsSQLStatement::NodeSelectedColumn& n) pure virtual

Visit NodeSelectedColumn.

void visit(const QgsSQLStatement::NodeTableDef& n) pure virtual

Visit NodeTableDef.

void visit(const QgsSQLStatement::NodeSelect& n) pure virtual

Visit NodeSelect.

void visit(const QgsSQLStatement::NodeJoin& n) pure virtual

Visit NodeJoin.

void visit(const QgsSQLStatement::NodeColumnSorted& n) pure virtual

Visit NodeColumnSorted.

void visit(const QgsSQLStatement::NodeCast& n) pure virtual

Visit NodeCast.