jrun.ejb.ejbql
Class ValidatingVisitor

java.lang.Object
  |
  +--jrun.ejb.ejbql.VisitorAdapter
        |
        +--jrun.ejb.ejbql.ValidatingVisitor

All Implemented Interfaces:

Visitor

public class ValidatingVisitor

extends VisitorAdapter

A visitor for validating some portion of an EJB QL Query. The goal is to have the parser itself catch as many errors as possible. This class should catch everything ELSE, especially those semantic conditions that are difficult or impossible to detect during parsing.

Author:

Enrique Duvos

Constructor Summary

ValidatingVisitor(EjbQLQuery query)

Method Summary

java.util.List	validate(Element element)
void	visitFromClause(FromClause fromClause)
void	visitNavigationExpression(NavigationExpression navigationExpr)
void	visitOperatorExpression(OperatorExpression expression)
void	visitQuery(EjbQLQuery query)
void	visitSelectClause(SelectClause selectClause)

Methods inherited from class jrun.ejb.ejbql.VisitorAdapter

getTraversalType, visitBetweenExpression, visitComparisonExpression, visitElements, visitEmptyCollectionExpression, visitIdentificationVar, visitInExpression, visitLikeExpression, visitLiteral, visitMemberOfExpression, visitNullComparisonExpression, visitOperator, visitSymbol, visitWhereClause

Methods inherited from class java.lang.Object

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

Constructor Detail

ValidatingVisitor

public ValidatingVisitor(EjbQLQuery query)

Method Detail

validate

public java.util.List validate(Element element)

visitQuery

public void visitQuery(EjbQLQuery query)

Overrides:

visitQuery in class VisitorAdapter

visitSelectClause

public void visitSelectClause(SelectClause selectClause)

Overrides:

visitSelectClause in class VisitorAdapter

visitFromClause

public void visitFromClause(FromClause fromClause)

Overrides:

visitFromClause in class VisitorAdapter

visitNavigationExpression

public void visitNavigationExpression(NavigationExpression navigationExpr)

Overrides:

visitNavigationExpression in class VisitorAdapter

visitOperatorExpression

public void visitOperatorExpression(OperatorExpression expression)

Overrides:

visitOperatorExpression in class VisitorAdapter