Class CollectionValuedPathExpressionStateObject
- java.lang.Object
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- org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractStateObject
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- org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractPathExpressionStateObject
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- org.eclipse.persistence.jpa.jpql.tools.model.query.CollectionValuedPathExpressionStateObject
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- All Implemented Interfaces:
ListHolderStateObject<String>
,StateObject
public class CollectionValuedPathExpressionStateObject extends AbstractPathExpressionStateObject
A collection-valued field is designated by the name of an association field in a one-to-many or a many-to-many relationship or by the name of an element collection field. The type of a collection-valued field is a collection of values of the abstract schema type of the related entity or element type.BNF:collection_valued_path_expression ::= general_identification_variable.{single_valued_object_field.}*collection_valued_field
- Since:
- 2.4
- Version:
- 2.4
- Author:
- Pascal Filion
- See Also:
CollectionValuedPathExpression
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Field Summary
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Fields inherited from class org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractPathExpressionStateObject
IDENTIFICATION_VARIABLE_PROPERTY, PATHS_LIST
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Constructor Summary
Constructors Constructor Description CollectionValuedPathExpressionStateObject(StateObject parent)
Creates a newCollectionValuedPathExpressionStateObject
.CollectionValuedPathExpressionStateObject(StateObject parent, String path)
Creates a newCollectionValuedPathExpressionStateObject
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
accept(StateObjectVisitor visitor)
Visits thisStateObject
by the givenvisitor
.CollectionValuedPathExpression
getExpression()
Returns the actual parsed object if thisStateObject
representation of the JPQL query was created by parsing an existing JPQL query.void
setExpression(CollectionValuedPathExpression expression)
Keeps a reference of theparsed object
object, which should only be done when this object is instantiated during the conversion of a parsed JPQL query intoStateObjects
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Methods inherited from class org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractPathExpressionStateObject
addItem, addItems, addListChangeListener, append, canMoveDown, canMoveUp, getIdentificationVariable, getItem, getManagedType, getMapping, getMapping, getPath, getType, getTypeDeclaration, hasIdentificationVariable, hasItems, isEquivalent, items, itemsSize, moveDown, moveUp, removeItem, removeItem, removeItems, removeListChangeListener, setIdentificationVariable, setPath, setPath, setPaths, setPaths, setPaths
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Methods inherited from class org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractStateObject
addPropertyChangeListener, children, decorate, equals, findIdentificationVariable, getDeclaration, getDecorator, getGrammar, getManagedTypeProvider, getParent, getQueryBuilder, getRoot, getType, getType, getTypeHelper, getTypeRepository, hashCode, isDecorated, removePropertyChangeListener, setExpression, setParent, toString, toString, toText
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Methods inherited from interface org.eclipse.persistence.jpa.jpql.tools.model.query.StateObject
addPropertyChangeListener, children, decorate, findIdentificationVariable, getDeclaration, getDecorator, getGrammar, getManagedTypeProvider, getParent, getQueryBuilder, getRoot, isDecorated, removePropertyChangeListener, setParent, toString, toText
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Constructor Detail
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CollectionValuedPathExpressionStateObject
public CollectionValuedPathExpressionStateObject(StateObject parent)
Creates a newCollectionValuedPathExpressionStateObject
.- Parameters:
parent
- The parent of this state object, which cannot benull
- Throws:
NullPointerException
- The given parent cannot benull
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CollectionValuedPathExpressionStateObject
public CollectionValuedPathExpressionStateObject(StateObject parent, String path)
Creates a newCollectionValuedPathExpressionStateObject
.- Parameters:
parent
- The parent of this state object, which cannot benull
path
- The collection-valued path expression- Throws:
NullPointerException
- The given parent cannot benull
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Method Detail
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accept
public void accept(StateObjectVisitor visitor)
Visits thisStateObject
by the givenvisitor
.- Parameters:
visitor
- Thevisitor
to visit this object
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getExpression
public CollectionValuedPathExpression getExpression()
Returns the actual parsed object if thisStateObject
representation of the JPQL query was created by parsing an existing JPQL query.- Specified by:
getExpression
in interfaceStateObject
- Overrides:
getExpression
in classAbstractPathExpressionStateObject
- Returns:
- The parsed object when a JPQL query is parsed and converted into a
StateObject
ornull
when the JPQL query is manually created (i.e. not from a string)
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setExpression
public void setExpression(CollectionValuedPathExpression expression)
Keeps a reference of theparsed object
object, which should only be done when this object is instantiated during the conversion of a parsed JPQL query intoStateObjects
.- Parameters:
expression
- Theparsed object
representing a collection-valued path expression
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