public class SizeExpressionStateObject extends AbstractSingleEncapsulatedExpressionStateObject
SIZE
function returns an integer value, the number of elements of the
collection. If the collection is empty, the SIZE
function evaluates to zero.
expression ::= SIZE(collection_valued_path_expression)
SizeExpression
STATE_OBJECT_PROPERTY
Constructor and Description |
---|
SizeExpressionStateObject(StateObject parent)
Creates a new
SizeExpressionStateObject . |
SizeExpressionStateObject(StateObject parent,
StateObject stateObject)
Creates a new
SizeExpressionStateObject . |
SizeExpressionStateObject(StateObject parent,
java.lang.String path)
Creates a new
SizeExpressionStateObject . |
Modifier and Type | Method and Description |
---|---|
void |
accept(StateObjectVisitor visitor)
Visits this
StateObject by the given visitor . |
SizeExpression |
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 JPQL identifier of the expression represented by this
AbstractSingleEncapsulatedExpressionStateObject . |
void |
setExpression(SizeExpression 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 . |
void |
setStateObject(StateObject stateObject)
Sets the given
StateObject to represent the new encapsulated expression. |
getStateObject, hasStateObject, isEquivalent, parse
addPropertyChangeListener, children, decorate, equals, findIdentificationVariable, getDeclaration, getDecorator, getGrammar, getManagedTypeProvider, getParent, getQueryBuilder, getRoot, getType, getType, getTypeHelper, getTypeRepository, hashCode, isDecorated, removePropertyChangeListener, setExpression, setParent, toString, toString, toText
public SizeExpressionStateObject(StateObject parent)
SizeExpressionStateObject
.parent
- The parent of this state object, which cannot be null
java.lang.NullPointerException
- The given parent cannot be null
public SizeExpressionStateObject(StateObject parent, StateObject stateObject)
SizeExpressionStateObject
.parent
- The parent of this state object, which cannot be null
stateObject
- The StateObject
representing the encapsulated expressionjava.lang.NullPointerException
- The given parent cannot be null
public SizeExpressionStateObject(StateObject parent, java.lang.String path)
SizeExpressionStateObject
.parent
- The parent of this state object, which cannot be null
path
- The collection-valued path expressionjava.lang.NullPointerException
- The given parent cannot be null
public void accept(StateObjectVisitor visitor)
StateObject
by the given visitor
.visitor
- The visitor
to visit this objectpublic SizeExpression getExpression()
StateObject
representation of the JPQL query
was created by parsing an existing JPQL query.getExpression
in interface StateObject
getExpression
in class AbstractSingleEncapsulatedExpressionStateObject
StateObject
or null
when the JPQL query is manually created (i.e. not from a string)public java.lang.String getIdentifier()
AbstractSingleEncapsulatedExpressionStateObject
.getIdentifier
in class AbstractEncapsulatedExpressionStateObject
public void setExpression(SizeExpression expression)
parsed object
object, which should only be
done when this object is instantiated during the conversion of a parsed JPQL query into
StateObjects
.expression
- The parsed object
representing a SIZE
expressionpublic void setStateObject(StateObject stateObject)
StateObject
to represent the new encapsulated expression.stateObject
- The new encapsulated StateObject
EclipseLink 2.6.3, "build v20160428-59c81c5" API Reference