SingleValuedPathExpressionBNF (EclipseLink 2.7.15, API Reference)

java.lang.Object
- org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF
- - org.eclipse.persistence.jpa.jpql.parser.SingleValuedPathExpressionBNF

```
public final class SingleValuedPathExpressionBNF
extends JPQLQueryBNF
```
The query BNF for a single valued path expression.
JPA 1.0:
BNF: single_valued_path_expression ::= state_field_path_expression | single_valued_association_path_expression

JPA 2.0:
BNF: single_valued_path_expression ::= qualified_identification_variable | state_field_path_expression | single_valued_object_path_expression

Version:

2.4

Author:

Pascal Filion

Since:

2.3

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String ID
The unique identifier of this BNF rule.

Constructor Summary

Constructors
Constructor Description

SingleValuedPathExpressionBNF()
Creates a new SingleValuedPathExpressionBNF.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`initialize()`	Initializes this BNF by registering child `JPQLQueryBNFs` and `ExpressionFactories`.

Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF
children, getExpressionFactory, getExpressionFactoryIds, getExpressionRegistry, getFallbackBNFId, getFallbackExpressionFactoryId, getId, getIdentifiers, handleAggregate, handleCollection, handlesNestedArray, handleSubExpression, hasChild, hasIdentifier, isCompound, nonCompoundChildren, registerChild, registerExpressionFactory, setCompound, setFallbackBNFId, setFallbackExpressionFactoryId, setHandleAggregate, setHandleCollection, setHandleNestedArray, setHandleSubExpression, toString, toString

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

- Field Detail
  - ID
```
public static final java.lang.String ID
```
    The unique identifier of this BNF rule.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - SingleValuedPathExpressionBNF
```
public SingleValuedPathExpressionBNF()
```
    Creates a new SingleValuedPathExpressionBNF.
- Method Detail
  - initialize
```
protected void initialize()
```
    Initializes this BNF by registering child JPQLQueryBNFs and ExpressionFactories.
    
    Overrides:
    
    initialize in class JPQLQueryBNF