org.exist.xquery
Class DefaultExpressionVisitor

java.lang.Object
  org.exist.xquery.BasicExpressionVisitor
      org.exist.xquery.DefaultExpressionVisitor

All Implemented Interfaces:

ExpressionVisitor

Direct Known Subclasses:

Optimizer

public class DefaultExpressionVisitor
extends BasicExpressionVisitor

An ExpressionVisitor which traverses the entire expression tree. Methods may be overwritten by subclasses to filter out the events they need.

Nested Class Summary

Nested classes/interfaces inherited from class org.exist.xquery.BasicExpressionVisitor

BasicExpressionVisitor.FirstStepVisitor, BasicExpressionVisitor.VariableRefVisitor

Constructor Summary

DefaultExpressionVisitor()

Method Summary

void	visitAttribConstructor(AttributeConstructor constructor)
void	visitAttribConstructor(DynamicAttributeConstructor constructor)
void	visitBuiltinFunction(Function function)
void	visitConditional(ConditionalExpression conditional)
void	visitDocumentConstructor(DocumentConstructor constructor)
void	visitElementConstructor(ElementConstructor constructor)
void	visitForExpression(ForExpr forExpr)
void	visitIntersectionExpr(Intersection intersect)
void	visitLetExpression(LetExpr letExpr)
void	visitLocationStep(LocationStep locationStep) Found a LocationStep
void	visitPathExpr(PathExpr expression) Default implementation will traverse a PathExpr if it is just a wrapper around another single expression object.
void	visitPredicate(Predicate predicate)
void	visitTextConstructor(DynamicTextConstructor constructor)
void	visitUnionExpr(Union union)
void	visitUserFunction(UserDefinedFunction function)
void	visitVariableDeclaration(VariableDeclaration decl)

Methods inherited from class org.exist.xquery.BasicExpressionVisitor

findFirstStep, findLocationSteps, findVariableRef, processWrappers, visit, visitAndExpr, visitCastExpr, visitFilteredExpr, visitFtExpression, visitGeneralComparison, visitOrExpr, visitTryCatch, visitVariableReference

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultExpressionVisitor

public DefaultExpressionVisitor()

Method Detail

visitPathExpr

public void visitPathExpr(PathExpr expression)

Description copied from class: BasicExpressionVisitor

Default implementation will traverse a PathExpr if it is just a wrapper around another single expression object.

Specified by:

visitPathExpr in interface ExpressionVisitor

Overrides:

visitPathExpr in class BasicExpressionVisitor

visitUserFunction

public void visitUserFunction(UserDefinedFunction function)

Specified by:

visitUserFunction in interface ExpressionVisitor

Overrides:

visitUserFunction in class BasicExpressionVisitor

visitBuiltinFunction

public void visitBuiltinFunction(Function function)

Specified by:

visitBuiltinFunction in interface ExpressionVisitor

Overrides:

visitBuiltinFunction in class BasicExpressionVisitor

visitForExpression

public void visitForExpression(ForExpr forExpr)

Specified by:

visitForExpression in interface ExpressionVisitor

Overrides:

visitForExpression in class BasicExpressionVisitor

visitLetExpression

public void visitLetExpression(LetExpr letExpr)

Specified by:

visitLetExpression in interface ExpressionVisitor

Overrides:

visitLetExpression in class BasicExpressionVisitor

visitConditional

public void visitConditional(ConditionalExpression conditional)

Specified by:

visitConditional in interface ExpressionVisitor

Overrides:

visitConditional in class BasicExpressionVisitor

visitLocationStep

public void visitLocationStep(LocationStep locationStep)

Description copied from interface: ExpressionVisitor

Found a LocationStep

Specified by:

visitLocationStep in interface ExpressionVisitor

Overrides:

visitLocationStep in class BasicExpressionVisitor

visitPredicate

public void visitPredicate(Predicate predicate)

Specified by:

visitPredicate in interface ExpressionVisitor

Overrides:

visitPredicate in class BasicExpressionVisitor

visitDocumentConstructor

public void visitDocumentConstructor(DocumentConstructor constructor)

Specified by:

visitDocumentConstructor in interface ExpressionVisitor

Overrides:

visitDocumentConstructor in class BasicExpressionVisitor

visitElementConstructor

public void visitElementConstructor(ElementConstructor constructor)

Specified by:

visitElementConstructor in interface ExpressionVisitor

Overrides:

visitElementConstructor in class BasicExpressionVisitor

visitTextConstructor

public void visitTextConstructor(DynamicTextConstructor constructor)

Specified by:

visitTextConstructor in interface ExpressionVisitor

Overrides:

visitTextConstructor in class BasicExpressionVisitor

visitAttribConstructor

public void visitAttribConstructor(AttributeConstructor constructor)

Specified by:

visitAttribConstructor in interface ExpressionVisitor

Overrides:

visitAttribConstructor in class BasicExpressionVisitor

visitAttribConstructor

public void visitAttribConstructor(DynamicAttributeConstructor constructor)

Specified by:

visitAttribConstructor in interface ExpressionVisitor

Overrides:

visitAttribConstructor in class BasicExpressionVisitor

visitUnionExpr

public void visitUnionExpr(Union union)

Specified by:

visitUnionExpr in interface ExpressionVisitor

Overrides:

visitUnionExpr in class BasicExpressionVisitor

visitIntersectionExpr

public void visitIntersectionExpr(Intersection intersect)

Specified by:

visitIntersectionExpr in interface ExpressionVisitor

Overrides:

visitIntersectionExpr in class BasicExpressionVisitor

visitVariableDeclaration

public void visitVariableDeclaration(VariableDeclaration decl)

Specified by:

visitVariableDeclaration in interface ExpressionVisitor

Overrides:

visitVariableDeclaration in class BasicExpressionVisitor