org.eclipse.persistence.jpa.jpql
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.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

protected Expression

expression The Expression that is the beginning of a query.

Constructor Summary

protected

JPQLQueryContext.QueryExpressionVisitor()

Method Summary

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

JPQLQueryContext.QueryExpressionVisitor

protected JPQLQueryContext.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