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

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

public final class InternalConcatExpressionBNF

extends JPQLQueryBNF

The query BNF for the COUNT expression's encapsulated expressions.

Since:

2.3

Version:

2.3

Author:

Pascal Filion

Field Summary

(package private) static java.lang.String

ID The unique identifier of this InternalConcatExpressionBNF.

Constructor Summary

InternalConcatExpressionBNF()
Creates a new InternalConcatExpressionBNF.

Method Summary

(package private) java.lang.String	getFallbackBNFId() When parsing the query and no JPQLQueryBNFs can help to parse the query, then it will fall back on this one.
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.
(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, getFallbackExpressionFactoryId, getId, 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

static final java.lang.String ID

The unique identifier of this InternalConcatExpressionBNF.

See Also:

Constant Field Values

Constructor Detail

InternalConcatExpressionBNF

InternalConcatExpressionBNF()

Creates a new InternalConcatExpressionBNF.

Method Detail

getFallbackBNFId

java.lang.String getFallbackBNFId()

When parsing the query and no JPQLQueryBNFs can help to parse the query, then it will fall back on this one.

Overrides:

getFallbackBNFId in class JPQLQueryBNF

Returns:

The unique identifier of the JPQLQueryBNF to use in the last resort

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

initialize

void initialize()

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

Overrides:

initialize in class JPQLQueryBNF

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