org.eclipse.persistence.jpa.jpql.tools

Class JPQLQueryContext.QueryExpressionVisitor

java.lang.Object

org.eclipse.persistence.jpa.jpql.parser.AnonymousExpressionVisitor

org.eclipse.persistence.jpa.jpql.parser.AbstractTraverseParentVisitor

org.eclipse.persistence.jpa.jpql.tools.JPQLQueryContext.QueryExpressionVisitor

All Implemented Interfaces:

ExpressionVisitor

Enclosing class:

JPQLQueryContext

protected static class JPQLQueryContext.QueryExpressionVisitor
extends AbstractTraverseParentVisitor

This visitor is responsible to retrieve the Expression that is the beginning of a query. For a subquery, it will retrieve SimpleSelectStatement and for a top-level query, it will retrieve JPQLExpression. The search goes through the parent hierarchy.

Field Summary

Fields

Modifier and Type	Field and Description
protected Expression	expression The Expression that is the beginning of a query.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	QueryExpressionVisitor()

Method Summary

Modifier and Type	Method and Description
void	visit(JPQLExpression expression) Visits the JPQLExpression expression.
void	visit(SimpleSelectStatement expression) Visits the SimpleSelectStatement expression.

Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractTraverseParentVisitor

visit

Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.AnonymousExpressionVisitor

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, 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, 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 Detail

expression

protected Expression expression

The Expression that is the beginning of a query.

Constructor Detail

QueryExpressionVisitor

protected QueryExpressionVisitor()

Method Detail

visit

public void visit(JPQLExpression expression)

Visits the JPQLExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AbstractTraverseParentVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SimpleSelectStatement expression)

Visits the SimpleSelectStatement expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit