Package com.blazebit.persistence.impl.transform

Class ClauseAndJoinAwareVisitor

java.lang.Object

com.blazebit.persistence.parser.expression.VisitorAdapter

com.blazebit.persistence.impl.transform.ClauseAndJoinAwareVisitor

All Implemented Interfaces:

Expression.Visitor

Direct Known Subclasses:

OuterFunctionVisitor

public class ClauseAndJoinAwareVisitor
extends VisitorAdapter

This visitor keeps track of whether joins are required which might change depending on the predicates. It is also keeps the clause for which it is executed.

Since:

1.2.0

Author:

Christian Beikov, Moritz Becker

Field Summary

Fields

Modifier and Type	Field	Description
protected ClauseType	fromClause
protected boolean	joinRequired

Constructor Summary

Constructors

Constructor	Description
ClauseAndJoinAwareVisitor()

Method Summary

Modifier and Type	Method	Description
void	visit(ClauseType clauseType, Expression expression)
void	visit(EqPredicate predicate)
void	visit(InPredicate predicate)
void	visit(IsEmptyPredicate predicate)
void	visit(IsNullPredicate predicate)
void	visit(MemberOfPredicate predicate)

Methods inherited from class com.blazebit.persistence.parser.expression.VisitorAdapter

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Field Details

fromClause

protected ClauseType fromClause

joinRequired

protected boolean joinRequired

Constructor Details

ClauseAndJoinAwareVisitor

public ClauseAndJoinAwareVisitor()

Method Details

visit

public void visit(ClauseType clauseType,
 Expression expression)

visit

public void visit(EqPredicate predicate)

Specified by:

visit in interface Expression.Visitor

Overrides:

visit in class VisitorAdapter

visit

public void visit(InPredicate predicate)

Specified by:

visit in interface Expression.Visitor

Overrides:

visit in class VisitorAdapter

visit

public void visit(MemberOfPredicate predicate)

Specified by:

visit in interface Expression.Visitor

Overrides:

visit in class VisitorAdapter

visit

public void visit(IsEmptyPredicate predicate)

Specified by:

visit in interface Expression.Visitor

Overrides:

visit in class VisitorAdapter

visit

public void visit(IsNullPredicate predicate)

Specified by:

visit in interface Expression.Visitor

Overrides:

visit in class VisitorAdapter