org.exist.xquery
Interface ExpressionVisitor

All Known Implementing Classes:

BasicExpressionVisitor, BasicExpressionVisitor.FirstStepVisitor, DefaultExpressionVisitor, Optimizer

public interface ExpressionVisitor

Defines a visitor to be used for traversing and analyzing the expression tree.

Author:

wolf

Method Summary

void	visit(Expression expression) Default fallback method if no other method matches the object's type.
void	visitAndExpr(OpAnd and)
void	visitBuiltinFunction(Function function)
void	visitCastExpr(CastExpression expression) Found a CastExpression
void	visitConditional(ConditionalExpression conditional)
void	visitForExpression(ForExpr forExpr)
void	visitFtExpression(ExtFulltext fulltext)
void	visitGeneralComparison(GeneralComparison comparison)
void	visitLetExpression(LetExpr letExpr)
void	visitLocationStep(LocationStep locationStep) Found a LocationStep
void	visitOrExpr(OpOr or)
void	visitPathExpr(PathExpr expression) Found a PathExpr
void	visitPredicate(Predicate predicate)
void	visitUnionExpr(Union union)
void	visitUserFunction(UserDefinedFunction function)

Method Detail

visit

void visit(Expression expression)

Default fallback method if no other method matches the object's type.

Parameters:

expression -

visitPathExpr

void visitPathExpr(PathExpr expression)

Found a PathExpr

visitLocationStep

void visitLocationStep(LocationStep locationStep)

Found a LocationStep

visitPredicate

void visitPredicate(Predicate predicate)

visitGeneralComparison

void visitGeneralComparison(GeneralComparison comparison)

visitCastExpr

void visitCastExpr(CastExpression expression)

Found a CastExpression

visitUnionExpr

void visitUnionExpr(Union union)

visitAndExpr

void visitAndExpr(OpAnd and)

visitOrExpr

void visitOrExpr(OpOr or)

visitFtExpression

void visitFtExpression(ExtFulltext fulltext)

visitForExpression

void visitForExpression(ForExpr forExpr)

visitLetExpression

void visitLetExpression(LetExpr letExpr)

visitBuiltinFunction

void visitBuiltinFunction(Function function)

visitUserFunction

void visitUserFunction(UserDefinedFunction function)

visitConditional

void visitConditional(ConditionalExpression conditional)