AbstractExpressionVisitor (OpenJPA Parent POM 4.0.0 API)

java.lang.Object
- org.apache.openjpa.kernel.exps.AbstractExpressionVisitor

All Implemented Interfaces:

ExpressionVisitor
```
public abstract class AbstractExpressionVisitor
extends java.lang.Object
implements ExpressionVisitor
```
No-op abstract visitor meant for easy extension.

Author:

Abe White

Constructor Summary

Constructors
Constructor Description

AbstractExpressionVisitor()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`enter(Expression exp)`	Enter an expression.
`void`	`enter(Value val)`	Enter a value.
`void`	`exit(Expression exp)`	Leave an expression.
`void`	`exit(Value val)`	Leave a value.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - AbstractExpressionVisitor
```
public AbstractExpressionVisitor()
```
- Method Detail
  - enter
```
public void enter(Expression exp)
```
    Description copied from interface: ExpressionVisitor
    
    Enter an expression. The expression will then invoke visits on its components.
    
    Specified by:
    
    enter in interface ExpressionVisitor
  - exit
```
public void exit(Expression exp)
```
    Description copied from interface: ExpressionVisitor
    
    Leave an expression.
    
    Specified by:
    
    exit in interface ExpressionVisitor
  - enter
```
public void enter(Value val)
```
    Description copied from interface: ExpressionVisitor
    
    Enter a value. The value will then invoke visits on its components.
    
    Specified by:
    
    enter in interface ExpressionVisitor
  - exit
```
public void exit(Value val)
```
    Description copied from interface: ExpressionVisitor
    
    Leave a value.
    
    Specified by:
    
    exit in interface ExpressionVisitor