Package com.blazebit.persistence.impl.transform

Class OuterFunctionVisitor

java.lang.Object

com.blazebit.persistence.parser.expression.VisitorAdapter

com.blazebit.persistence.impl.transform.ClauseAndJoinAwareVisitor

com.blazebit.persistence.impl.transform.OuterFunctionVisitor

All Implemented Interfaces:

ExpressionModifierVisitor<ExpressionModifier>, Expression.Visitor

public class OuterFunctionVisitor
extends ClauseAndJoinAwareVisitor
implements ExpressionModifierVisitor<ExpressionModifier>

This Transformer runs through the expressions of the query For each OUTER(pp) expression it performs an implicitJoin for the join manager of the surrounding query and replaces the OUTER(pp) expression with the base node alias '.' the field. We need a join manager hierarchy to do this. We have decided to limit the outer statement to the join manager of the directly surrounding query so that the user can specify the absolute path in a normalized form.

Since:

1.0.0

Author:

Moritz Becker

Field Summary

Fields inherited from class com.blazebit.persistence.impl.transform.ClauseAndJoinAwareVisitor

fromClause, joinRequired

Constructor Summary

Constructors

Constructor	Description
OuterFunctionVisitor(JoinManager joinManager)

Method Summary

Modifier and Type	Method	Description
void	visit(FunctionExpression expression)
void	visit(ExpressionModifier expressionModifier, ClauseType clauseType)

Methods inherited from class com.blazebit.persistence.impl.transform.ClauseAndJoinAwareVisitor

visit, visit, visit, visit, visit, visit

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

Methods inherited from class java.lang.Object

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

Constructor Details

OuterFunctionVisitor

public OuterFunctionVisitor(JoinManager joinManager)

Method Details

visit

public void visit(ExpressionModifier expressionModifier, ClauseType clauseType)

Specified by:

visit in interface ExpressionModifierVisitor<ExpressionModifier>

visit

public void visit(FunctionExpression expression)

Specified by:

visit in interface Expression.Visitor

Overrides:

visit in class VisitorAdapter