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

Class GroupByItemBNF

java.lang.Object

org.eclipse.persistence.jpa.internal.jpql.parser.JPQLQueryBNF

org.eclipse.persistence.jpa.internal.jpql.parser.GroupByItemBNF

public final class GroupByItemBNF
extends JPQLQueryBNF

The query BNF for a group by item expression.

BNF: groupby_item ::= single_valued_path_expression | identification_variable

Since:

2.3

Version:

2.3

Author:

Pascal Filion

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	ID The unique identifier of this BNF rule.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	handleAggregate() Determines whether the Expression handles a collection of sub-expressions that are aggregated by logical or arithmetic operators.
boolean	handleCollection() Determines whether the Expression handles a collection of sub-expressions that are separated by commas.

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

expressionFactory, expressionFactoryIds, getId, hasIdentifier, identifiers, isCompound, nonCompoundChildren, toString

Methods inherited from class java.lang.Object

equals, 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

Method Detail

handleAggregate

public boolean handleAggregate()

Determines whether the Expression handles a collection of sub-expressions that are aggregated by logical or arithmetic operators.

Overrides:

handleAggregate in class JPQLQueryBNF

Returns:

true if the sub-expression to parse might have several logical and/or arithmetic expressions; false otherwise

handleCollection

public boolean handleCollection()

Determines whether the Expression handles a collection of sub-expressions that are separated by commas.

Overrides:

handleCollection in class JPQLQueryBNF

Returns:

true if the sub-expression to parse might have several sub-expressions separated by commas; false otherwise