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org.eclipse.persistence.jpa.jpql.parser

public final Class AggregateExpressionBNF

extends JPQLQueryBNF
Class Inheritance
Annotations
@SuppressWarnings:nls
The query BNF for an aggregate expression.

JPA 1.0, 2.0:

BNF: aggregate_expression ::= { AVG | MAX | MIN | SUM } ([DISTINCT] state_field_path_expression) | COUNT ([DISTINCT] identification_variable | state_field_path_expression | single_valued_object_path_expression)
JPA 2.1:
BNF: aggregate_expression ::= { AVG | MAX | MIN | SUM } ([DISTINCT] state_field_path_expression) | COUNT ([DISTINCT] identification_variable | state_field_path_expression | single_valued_object_path_expression) | function_invocation
Author
Pascal Filion
Since
2.3
Version
2.4

Field Summary

Modifier and TypeField and Description
public static final String
ID

The unique identifier of this BNF rule.

Constructor Summary

AccessConstructor and Description
public
AggregateExpressionBNF()

Creates a new AggregateExpressionBNF.

Method Summary

Modifier and TypeMethod and Description
protected void
initialize()

Overrides org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF.initialize.

Initializes this BNF by registering child JPQLQueryBNFs and ExpressionFactories.
Inherited from org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF:
childrengetExpressionFactorygetExpressionFactoryIdsgetExpressionRegistrygetFallbackBNFIdgetFallbackExpressionFactoryIdgetIdgetIdentifiershandleAggregatehandleCollectionhandlesNestedArrayhandleSubExpressionhasChildhasIdentifierisCompoundnonCompoundChildrenregisterChildregisterExpressionFactorysetCompoundsetExpressionRegistrysetFallbackBNFIdsetFallbackExpressionFactoryIdsetHandleAggregatesetHandleCollectionsetHandleNestedArraysetHandleSubExpressiontoStringtoString

Field Detail

IDback to summary
public static final String ID

The unique identifier of this BNF rule.

Constructor Detail

AggregateExpressionBNFback to summary
public AggregateExpressionBNF()

Creates a new AggregateExpressionBNF.

Method Detail

initializeback to summary
protected void initialize()

Overrides org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF.initialize.

Doc from org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF.initialize.

Initializes this BNF by registering child JPQLQueryBNFs and ExpressionFactories.

Annotations
@Override