org.eclipse.persistence.jpa.jpql.tools.resolver
Class AbstractRangeDeclaration

java.lang.Object
  org.eclipse.persistence.jpa.jpql.tools.resolver.Declaration
      org.eclipse.persistence.jpa.jpql.tools.resolver.AbstractRangeDeclaration

All Implemented Interfaces:

JPQLQueryDeclaration

Direct Known Subclasses:

DerivedDeclaration, RangeDeclaration

public abstract class AbstractRangeDeclaration
extends Declaration

The abstract definition of a range declaration, which is used to navigate to a "root" object.

Version:

2.5

See Also:

DerivedDeclaration, RangeDeclaration

Author:

Pascal Filion

Since:

2.5

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.persistence.jpa.jpql.JPQLQueryDeclaration

JPQLQueryDeclaration.Type

Field Summary

protected java.util.List<Join>

joins The list of JOIN expressions that are declared in the same declaration than the range variable declaration represented by this declaration.

Fields inherited from class org.eclipse.persistence.jpa.jpql.tools.resolver.Declaration

baseExpression, declarationExpression, identificationVariable, rootPath

Constructor Summary

AbstractRangeDeclaration()
Creates a new AbstractRangeDeclaration.

Method Summary

protected void	addJoin(Join join) Adds the given Join.
java.util.List<Join>	getJoins() Returns the JOIN expressions defined with this declaration, if supported.
boolean	hasJoins() Determines whether the declaration contains JOIN expressions.

Methods inherited from class org.eclipse.persistence.jpa.jpql.tools.resolver.Declaration

getBaseExpression, getDeclarationExpression, getIdentificationVariable, getRootPath, getVariableName, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.persistence.jpa.jpql.JPQLQueryDeclaration

getType

Field Detail

joins

protected java.util.List<Join> joins

The list of JOIN expressions that are declared in the same declaration than the range variable declaration represented by this declaration.

Constructor Detail

AbstractRangeDeclaration

public AbstractRangeDeclaration()

Creates a new AbstractRangeDeclaration.

Method Detail

addJoin

protected void addJoin(Join join)

Adds the given Join.

Parameters:

join - The Join that is declared in the range variable declaration

getJoins

public java.util.List<Join> getJoins()

Returns the JOIN expressions defined with this declaration, if supported. The list contains the JOIN expressions in ordered they were declared.

Specified by:

getJoins in interface JPQLQueryDeclaration

Overrides:

getJoins in class Declaration

Returns:

The JOIN expressions defined with this declaration or an empty list if this declaration does not support it

hasJoins

public boolean hasJoins()

Determines whether the declaration contains JOIN expressions. This can be true only when #isRange() returns true. A collection member declaration does not have JOIN expressions.

Specified by:

hasJoins in interface JPQLQueryDeclaration

Overrides:

hasJoins in class Declaration

Returns:

true if at least one JOIN expression was parsed; otherwise false