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<java.lang.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- Version:
- 2.4
- See Also:
CollectionValuedPathExpression- Author:
- Pascal Filion
- Since:
- 2.4
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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, java.lang.String path)Creates a newCollectionValuedPathExpressionStateObject.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidaccept(StateObjectVisitor visitor)Visits thisStateObjectby the givenvisitor.CollectionValuedPathExpressiongetExpression()Returns the actual parsed object if thisStateObjectrepresentation of the JPQL query was created by parsing an existing JPQL query.protected IManagedTyperesolveManagedType()Resolvesprotected ITyperesolveType()Resolves theITypeof the property handled by this object.voidsetExpression(CollectionValuedPathExpression expression)Keeps a reference of theparsed objectobject, which should only be done when this object is instantiated during the conversion of a parsed JPQL query intoStateObjects.-
Methods inherited from class org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractPathExpressionStateObject
addChildren, addItem, addItems, addListChangeListener, append, canMoveDown, canMoveUp, clearResolvedObjects, getIdentificationVariable, getItem, getManagedType, getMapping, getMapping, getPath, getType, getTypeDeclaration, hasIdentificationVariable, hasItems, initialize, isEquivalent, items, itemsSize, moveDown, moveUp, removeItem, removeItem, removeItems, removeListChangeListener, resolveMappings, resolveTypeDeclaration, setIdentificationVariable, setIdentificationVariableInternally, setPath, setPath, setPaths, setPaths, setPaths, toTextInternal
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Methods inherited from class org.eclipse.persistence.jpa.jpql.tools.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, isDecorated, parent, parent, parent, removePropertyChangeListener, setExpression, setParent, toString, toString, toStringInternal, toStringItems, toText
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Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
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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:
java.lang.NullPointerException- The given parent cannot benull
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CollectionValuedPathExpressionStateObject
public CollectionValuedPathExpressionStateObject(StateObject parent, java.lang.String path)
Creates a newCollectionValuedPathExpressionStateObject.- Parameters:
parent- The parent of this state object, which cannot benullpath- The collection-valued path expression- Throws:
java.lang.NullPointerException- The given parent cannot benull
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Method Detail
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accept
public void accept(StateObjectVisitor visitor)
Visits thisStateObjectby the givenvisitor.- Parameters:
visitor- Thevisitorto visit this object
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getExpression
public CollectionValuedPathExpression getExpression()
Returns the actual parsed object if thisStateObjectrepresentation of the JPQL query was created by parsing an existing JPQL query.- Specified by:
getExpressionin interfaceStateObject- Overrides:
getExpressionin classAbstractPathExpressionStateObject- Returns:
- The parsed object when a JPQL query is parsed and converted into a
StateObjectornullwhen the JPQL query is manually created (i.e. not from a string)
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resolveManagedType
protected IManagedType resolveManagedType()
Resolves- Specified by:
resolveManagedTypein classAbstractPathExpressionStateObject- Returns:
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resolveType
protected IType resolveType()
Resolves theITypeof the property handled by this object.- Specified by:
resolveTypein classAbstractPathExpressionStateObject- Returns:
- Either the
ITypethat was resolved by this object or theITypeforIType.UNRESOLVABLE_TYPEif it could not be resolved
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setExpression
public void setExpression(CollectionValuedPathExpression expression)
Keeps a reference of theparsed objectobject, which should only be done when this object is instantiated during the conversion of a parsed JPQL query intoStateObjects.- Parameters:
expression- Theparsed objectrepresenting a collection-valued path expression
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