org.eclipse.persistence.jpa.jpql.model.query
Class SubtractionExpressionStateObject

java.lang.Object
  org.eclipse.persistence.jpa.jpql.model.query.AbstractStateObject
      org.eclipse.persistence.jpa.jpql.model.query.CompoundExpressionStateObject
          org.eclipse.persistence.jpa.jpql.model.query.ArithmeticExpressionStateObject
              org.eclipse.persistence.jpa.jpql.model.query.SubtractionExpressionStateObject

All Implemented Interfaces:

StateObject

public class SubtractionExpressionStateObject
extends ArithmeticExpressionStateObject

TODO:

BNF: arithmetic_expression ::= arithmetic_expression - arithmetic_term

Version:

2.4

See Also:

SubtractionExpression

Author:

Pascal Filion

Since:

2.4

Field Summary

Fields inherited from class org.eclipse.persistence.jpa.jpql.model.query.CompoundExpressionStateObject

LEFT_STATE_OBJECT_PROPERTY, RIGHT_STATE_OBJECT_PROPERTY

Constructor Summary

SubtractionExpressionStateObject(StateObject parent)
Creates a new SubtractionExpressionStateObject.

SubtractionExpressionStateObject(StateObject parent, StateObject leftStateObject, StateObject rightStateObject)
Creates a new SubtractionExpressionStateObject.

SubtractionExpressionStateObject(StateObject parent, java.lang.String leftJpqlFragment, java.lang.String rightJpqlFragment)
Creates a new SubtractionExpressionStateObject.

Method Summary

void	accept(StateObjectVisitor visitor) Visits this StateObject by the given visitor.
SubtractionExpression	getExpression() Returns the actual parsed object if this StateObject representation of the JPQL query was created by parsing an existing JPQL query.
java.lang.String	getIdentifier() Returns the identifier joining the two StateObjects.
void	setExpression(SubtractionExpression expression) Keeps a reference of the parsed object object, which should only be done when this object is instantiated during the conversion of a parsed JPQL query into StateObjects.

Methods inherited from class org.eclipse.persistence.jpa.jpql.model.query.ArithmeticExpressionStateObject

getLeftQueryBNFId, getRightQueryBNFId

Methods inherited from class org.eclipse.persistence.jpa.jpql.model.query.CompoundExpressionStateObject

addChildren, getLeft, getRight, hasLeft, hasRight, isEquivalent, parseLeft, parseRight, setLeft, setRight, toTextInternal

Methods inherited from class org.eclipse.persistence.jpa.jpql.model.query.AbstractStateObject

acceptUnknownVisitor, acceptUnknownVisitor, addProblems, addPropertyChangeListener, areEquivalent, buildProblem, buildProblem, buildStateObject, buildStateObjects, checkParent, children, decorate, equals, findIdentificationVariable, firePropertyChanged, getChangeSupport, getDeclaration, getDecorator, getGrammar, getManagedTypeProvider, getParent, getQueryBuilder, getRoot, getType, getType, getTypeHelper, getTypeRepository, hashCode, initialize, isDecorated, parent, parent, parent, removePropertyChangeListener, setExpression, setParent, toString, toString, toStringInternal, toStringItems, toText

Methods inherited from class java.lang.Object

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

Constructor Detail

SubtractionExpressionStateObject

public SubtractionExpressionStateObject(StateObject parent)

Creates a new SubtractionExpressionStateObject.

Parameters:

parent - The parent of this state object, which cannot be null

Throws:

java.lang.NullPointerException - The given parent cannot be null

SubtractionExpressionStateObject

public SubtractionExpressionStateObject(StateObject parent,
                                        StateObject leftStateObject,
                                        StateObject rightStateObject)

Creates a new SubtractionExpressionStateObject.

Parameters:

parent - The parent of this state object, which cannot be null

leftStateObject - The StateObject representing the left expression

rightStateObject - The StateObject representing the right expression

Throws:

java.lang.NullPointerException - The given parent cannot be null

SubtractionExpressionStateObject

public SubtractionExpressionStateObject(StateObject parent,
                                        java.lang.String leftJpqlFragment,
                                        java.lang.String rightJpqlFragment)

Creates a new SubtractionExpressionStateObject.

Parameters:

parent - The parent of this state object, which cannot be null

leftJpqlFragment - The string representation of the left expression to parse and to convert into a StateObject

rightJpqlFragment - The string representation of the right expression to parse and to convert into a StateObject

Throws:

java.lang.NullPointerException - The given parent cannot be null

Method Detail

accept

public void accept(StateObjectVisitor visitor)

Visits this StateObject by the given visitor.

Parameters:

visitor - The visitor to visit this object

getExpression

public SubtractionExpression getExpression()

Returns the actual parsed object if this StateObject representation of the JPQL query was created by parsing an existing JPQL query.

Specified by:

getExpression in interface StateObject

Overrides:

getExpression in class ArithmeticExpressionStateObject

Returns:

The parsed object when a JPQL query is parsed and converted into a StateObject or null when the JPQL query is manually created (i.e. not from a string)

getIdentifier

public java.lang.String getIdentifier()

Returns the identifier joining the two StateObjects.

Specified by:

getIdentifier in class CompoundExpressionStateObject

Returns:

The JPQL identifier join two expressions

setExpression

public void setExpression(SubtractionExpression expression)

Keeps a reference of the parsed object object, which should only be done when this object is instantiated during the conversion of a parsed JPQL query into StateObjects.

Parameters:

expression - The parsed object representing a subtraction expression