Module eclipselink

Package org.eclipse.persistence.jpa.jpql

Class AbstractGrammarValidator.AbstractSingleEncapsulatedExpressionHelper<T extends AbstractSingleEncapsulatedExpression>

java.lang.Object

org.eclipse.persistence.jpa.jpql.AbstractGrammarValidator.AbstractSingleEncapsulatedExpressionHelper<T>

All Implemented Interfaces:

AbstractGrammarValidator.AbstractEncapsulatedExpressionHelper<T>

Enclosing class:

AbstractGrammarValidator

protected abstract static class AbstractGrammarValidator.AbstractSingleEncapsulatedExpressionHelper<T extends AbstractSingleEncapsulatedExpression>
extends Object
implements AbstractGrammarValidator.AbstractEncapsulatedExpressionHelper<T>

The abstract implementation of AbstractGrammarValidator.AbstractSingleEncapsulatedExpressionHelper which implements some of the methods since the behavior is the same for all subclasses of AbstractSingleEncapsulatedExpression.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractSingleEncapsulatedExpressionHelper(AbstractGrammarValidator validator)

Method Summary

Modifier and Type	Method	Description
String[]	arguments(T expression)	Returns the arguments that can help to format the localized problem.
protected abstract String	encapsulatedExpressionInvalidKey(T expression)	Returns the message key for the problem describing that the encapsulated expression is invalid.
protected int	encapsulatedExpressionLength(T expression)	Returns the length of the encapsulated expression.
protected abstract String	encapsulatedExpressionMissingKey(T expression)	Returns the message key for the problem describing that the encapsulated expression is missing.
boolean	hasLeftParenthesis(T expression)	Determines whether the given AbstractEncapsulatedExpression has the left parenthesis.
boolean	hasRightParenthesis(T expression)	Determines whether the given AbstractEncapsulatedExpression has the right parenthesis.
String	identifier(T expression)	Returns the JPQL identifier of the given AbstractEncapsulatedExpression.
protected boolean	isEncapsulatedExpressionMissing(T expression)	Determines whether there is an encapsulated expression or not.
protected boolean	isEncapsulatedExpressionValid(T expression)	Determines whether the encapsulated expression is valid.
protected int	lengthBeforeEncapsulatedExpression(T expression)	Returns the length after the left parenthesis and before the encapsulated expression starts.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.eclipse.persistence.jpa.jpql.AbstractGrammarValidator.AbstractEncapsulatedExpressionHelper

leftParenthesisMissingKey, rightParenthesisMissingKey

Constructor Detail

AbstractSingleEncapsulatedExpressionHelper

protected AbstractSingleEncapsulatedExpressionHelper(AbstractGrammarValidator validator)

Method Detail

arguments

public String[] arguments(T expression)

Description copied from interface: AbstractGrammarValidator.AbstractEncapsulatedExpressionHelper

Returns the arguments that can help to format the localized problem.

Specified by:

arguments in interface AbstractGrammarValidator.AbstractEncapsulatedExpressionHelper<T extends AbstractSingleEncapsulatedExpression>

Parameters:

expression - The AbstractEncapsulatedExpression being validated

Returns:

The list of arguments used to complete the localized problem

encapsulatedExpressionInvalidKey

protected abstract String encapsulatedExpressionInvalidKey(T expression)

Returns the message key for the problem describing that the encapsulated expression is invalid.

Parameters:

expression - The AbstractSingleEncapsulatedExpression being validated

Returns:

The key used to retrieve the localized message

encapsulatedExpressionLength

protected int encapsulatedExpressionLength(T expression)

Returns the length of the encapsulated expression.

Parameters:

expression - AbstractSingleEncapsulatedExpression being validated

Returns:

The length of the encapsulated expression

encapsulatedExpressionMissingKey

protected abstract String encapsulatedExpressionMissingKey(T expression)

Returns the message key for the problem describing that the encapsulated expression is missing.

Parameters:

expression - The AbstractSingleEncapsulatedExpression being validated

Returns:

The key used to retrieve the localized message

hasLeftParenthesis

public boolean hasLeftParenthesis(T expression)

Description copied from interface: AbstractGrammarValidator.AbstractEncapsulatedExpressionHelper

Determines whether the given AbstractEncapsulatedExpression has the left parenthesis.

Specified by:

hasLeftParenthesis in interface AbstractGrammarValidator.AbstractEncapsulatedExpressionHelper<T extends AbstractSingleEncapsulatedExpression>

Parameters:

expression - The AbstractEncapsulatedExpression being validated

Returns:

true if the left parenthesis was parsed

hasRightParenthesis

public boolean hasRightParenthesis(T expression)

Description copied from interface: AbstractGrammarValidator.AbstractEncapsulatedExpressionHelper

Determines whether the given AbstractEncapsulatedExpression has the right parenthesis.

Specified by:

hasRightParenthesis in interface AbstractGrammarValidator.AbstractEncapsulatedExpressionHelper<T extends AbstractSingleEncapsulatedExpression>

Parameters:

expression - The AbstractEncapsulatedExpression being validated

Returns:

true if the right parenthesis was parsed

identifier

public final String identifier(T expression)

Description copied from interface: AbstractGrammarValidator.AbstractEncapsulatedExpressionHelper

Returns the JPQL identifier of the given AbstractEncapsulatedExpression.

Specified by:

identifier in interface AbstractGrammarValidator.AbstractEncapsulatedExpressionHelper<T extends AbstractSingleEncapsulatedExpression>

Parameters:

expression - The AbstractEncapsulatedExpression being validated

Returns:

The JPQL identifier of the given AbstractEncapsulatedExpression

isEncapsulatedExpressionMissing

protected boolean isEncapsulatedExpressionMissing(T expression)

Determines whether there is an encapsulated expression or not.

Parameters:

expression - The AbstractSingleEncapsulatedExpression being validated

Returns:

true if the given AbstractSingleEncapsulatedExpression has an encapsulated expression; false otherwise

isEncapsulatedExpressionValid

protected boolean isEncapsulatedExpressionValid(T expression)

Determines whether the encapsulated expression is valid.

Parameters:

expression - The AbstractSingleEncapsulatedExpression being validated

Returns:

true if the encapsulated expression is valid; false otherwise

lengthBeforeEncapsulatedExpression

protected int lengthBeforeEncapsulatedExpression(T expression)

Returns the length after the left parenthesis and before the encapsulated expression starts.

By default, there is no text after the left parenthesis and the encapsulated expression but there are exceptions, such as the functions (AVG, COUNT, MIN, MAX, SUM).

Parameters:

expression - The AbstractSingleEncapsulatedExpression being validated

Returns:

The length after the left parenthesis and before the encapsulated expression starts