jrun.ejb.ejbql
Interface Visitor

All Known Implementing Classes:

VisitorAdapter

public interface Visitor

Standard design pattern for writing classes that perform some action on a complex hierarchy, in this case an EJB QL query. Elements in the EJB QL query use double-dispatch to delegate to concrete Visitor instances. This keeps the hierarchy classes simpler and makes it easier to write new actions that operate on the EJB QL query.

Author:

Enrique Duvos

Method Summary

void	visitBetweenExpression(OperatorExpression expression)
void	visitComparisonExpression(OperatorExpression expression)
void	visitEmptyCollectionExpression(OperatorExpression expression)
void	visitFromClause(FromClause fromClause)
void	visitIdentificationVar(IdentificationVar identVar)
void	visitInExpression(OperatorExpression expression)
void	visitLikeExpression(OperatorExpression expression)
void	visitLiteral(Literal literal)
void	visitMemberOfExpression(OperatorExpression expression)
void	visitNavigationExpression(NavigationExpression navigationExpr)
void	visitNullComparisonExpression(OperatorExpression expression)
void	visitOperator(Operator operator)
void	visitOperatorExpression(OperatorExpression expression)
void	visitQuery(EjbQLQuery query)
void	visitSelectClause(SelectClause selectClause)
void	visitSymbol(Symbol symbol)
void	visitWhereClause(WhereClause whereClause)

Method Detail

visitQuery

public void visitQuery(EjbQLQuery query)

visitWhereClause

public void visitWhereClause(WhereClause whereClause)

visitSelectClause

public void visitSelectClause(SelectClause selectClause)

visitFromClause

public void visitFromClause(FromClause fromClause)

visitIdentificationVar

public void visitIdentificationVar(IdentificationVar identVar)

visitNavigationExpression

public void visitNavigationExpression(NavigationExpression navigationExpr)

visitInExpression

public void visitInExpression(OperatorExpression expression)

visitLikeExpression

public void visitLikeExpression(OperatorExpression expression)

visitNullComparisonExpression

public void visitNullComparisonExpression(OperatorExpression expression)

visitBetweenExpression

public void visitBetweenExpression(OperatorExpression expression)

visitEmptyCollectionExpression

public void visitEmptyCollectionExpression(OperatorExpression expression)

visitMemberOfExpression

public void visitMemberOfExpression(OperatorExpression expression)

visitComparisonExpression

public void visitComparisonExpression(OperatorExpression expression)

visitOperatorExpression

public void visitOperatorExpression(OperatorExpression expression)

visitLiteral

public void visitLiteral(Literal literal)

visitSymbol

public void visitSymbol(Symbol symbol)

visitOperator

public void visitOperator(Operator operator)