Module org.eclipse.persistence.jpa.jpql

Package org.eclipse.persistence.jpa.jpql.parser

Class AbstractLiteralExpressionFactory

java.lang.Object

org.eclipse.persistence.jpa.jpql.parser.ExpressionFactory

org.eclipse.persistence.jpa.jpql.parser.AbstractLiteralExpressionFactory

All Implemented Interfaces:

Comparable<ExpressionFactory>

Direct Known Subclasses:

CollectionValuedPathExpressionFactory, EntityTypeLiteralFactory, JoinCollectionValuedPathExpressionFactory, LiteralExpressionFactory, StateFieldPathExpressionFactory

public abstract class AbstractLiteralExpressionFactory
extends ExpressionFactory

This factory is responsible to return the right literal expression.

Since:

2.3

Version:

2.5

See Also:

• StringLiteral
• InputParameter
• NumericLiteral
• KeywordExpression
• StateFieldPathExpression
• IdentificationVariable

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractLiteralExpressionFactory(String id)	Creates a new AbstractLiteralExpressionFactory.

Method Summary

Modifier and Type	Method	Description
protected abstract AbstractExpression	buildExpression(AbstractExpression parent, WordParser wordParser, String word, AbstractExpression expression, boolean tolerant)	Creates the actual AbstractExpression this factory manages.
protected AbstractExpression	buildExpression(AbstractExpression parent, WordParser wordParser, String word, JPQLQueryBNF queryBNF, AbstractExpression expression, boolean tolerant)	Creates a new Expression.
protected boolean	isCollection()	Determines

Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.ExpressionFactory

compareTo, equals, getExpressionRegistry, getId, hashCode, identifiers, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

AbstractLiteralExpressionFactory

protected AbstractLiteralExpressionFactory(String id)

Creates a new AbstractLiteralExpressionFactory.

Parameters:

id - The unique identifier of this ExpressionFactory

Method Details

buildExpression

protected abstract AbstractExpression buildExpression(AbstractExpression parent,
 WordParser wordParser,
 String word,
 AbstractExpression expression,
 boolean tolerant)

Creates the actual AbstractExpression this factory manages.

Parameters:

parent - The parent AbstractExpression

wordParser - The text to parse based on the current position of the cursor

word - The current word being parsed

expression - During the parsing, it is possible the first part of an expression was parsed which needs to be used as a sub-expression of the newly created expression

Returns:

A new AbstractExpression representing the portion or the totality of the text held by WordParser starting at the cursor position

buildExpression

protected AbstractExpression buildExpression(AbstractExpression parent,
 WordParser wordParser,
 String word,
 JPQLQueryBNF queryBNF,
 AbstractExpression expression,
 boolean tolerant)

Description copied from class: ExpressionFactory

Creates a new Expression.

Specified by:

buildExpression in class ExpressionFactory

Parameters:

parent - The parent AbstractExpression

wordParser - The text to parse based on the current position of the cursor

word - The current word being parsed

queryBNF - The BNF grammar that was used to identifier this factory to be capable to parse a portion of the query

expression - During the parsing, it is possible the first part of an expression was parsed which needs to be used as a sub-expression of the newly created expression

Returns:

A new AbstractExpression representing the portion or the totality of the text held by WordParser starting at the cursor position

isCollection

protected boolean isCollection()

Determines