org.eclipse.persistence.jpa.internal.jpql.parser
Class AggregateExpressionBNF

java.lang.Object
org.eclipse.persistence.jpa.internal.jpql.parser.JPQLQueryBNF
org.eclipse.persistence.jpa.internal.jpql.parser.AggregateExpressionBNF

public final class AggregateExpressionBNF

extends JPQLQueryBNF

The query BNF for an aggregate expression.

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)

Since:

2.3

Version:

2.3

Author:

Pascal Filion

Field Summary

static java.lang.String

ID The unique identifier of this BNF rule.

Constructor Summary

AggregateExpressionBNF()
Creates a new AggregateExpressionBNF.

Method Summary

(package private) void

initialize() Initializes this BNF rule by registering child BNF rules and expression factories.

Methods inherited from class org.eclipse.persistence.jpa.internal.jpql.parser.JPQLQueryBNF

addChildren, children, expressionFactory, expressionFactoryIds, getFallbackBNFId, getFallbackExpressionFactoryId, getId, handleAggregate, handleCollection, hasIdentifier, identifiers, isCompound, nonCompoundChildren, registerChild, registerExpressionFactory, 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

AggregateExpressionBNF

AggregateExpressionBNF()

Creates a new AggregateExpressionBNF.

Method Detail

initialize

void initialize()

Initializes this BNF rule by registering child BNF rules and expression factories.

Overrides:

initialize in class JPQLQueryBNF