Class ObjectExpressionStateObject
java.lang.Object
org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractStateObject
org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractEncapsulatedExpressionStateObject
org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractSingleEncapsulatedExpressionStateObject
org.eclipse.persistence.jpa.jpql.tools.model.query.EncapsulatedIdentificationVariableExpressionStateObject
org.eclipse.persistence.jpa.jpql.tools.model.query.ObjectExpressionStateObject
- All Implemented Interfaces:
StateObject
public class ObjectExpressionStateObject
extends EncapsulatedIdentificationVariableExpressionStateObject
Stand-alone identification variables in the
SELECT
clause may optionally be
qualified by the OBJECT
operator. The SELECT
clause must
not use the OBJECT
operator to qualify path expressions.
BNF: expression ::= OBJECT(identification_variable)
- Since:
- 2.4
- Version:
- 2.4
- See Also:
-
Field Summary
Fields inherited from class org.eclipse.persistence.jpa.jpql.tools.model.query.EncapsulatedIdentificationVariableExpressionStateObject
IDENTIFICATION_VARIABLE_PROPERTY
Fields inherited from class org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractSingleEncapsulatedExpressionStateObject
STATE_OBJECT_PROPERTY
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Constructor Summary
ConstructorDescriptionCreates a newObjectExpressionStateObject
.ObjectExpressionStateObject
(StateObject parent, String identificationVariable) Creates a newObjectExpressionStateObject
. -
Method Summary
Modifier and TypeMethodDescriptionvoid
accept
(StateObjectVisitor visitor) Visits thisStateObject
by the givenvisitor
.protected void
addProblems
(List<Problem> problems) Adds to the given list the problems that were found with the current state of thisStateObject
, which means there are validation issues.Returns the actual parsed object if thisStateObject
representation of the JPQL query was created by parsing an existing JPQL query.Returns the JPQL identifier of the expression represented by thisAbstractSingleEncapsulatedExpressionStateObject
.void
setExpression
(ObjectExpression 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
.Methods inherited from class org.eclipse.persistence.jpa.jpql.tools.model.query.EncapsulatedIdentificationVariableExpressionStateObject
checkIntegrity, clearResolvedObjects, getIdentificationVariable, getManagedType, getQueryBNFId, getStateObject, getType, getTypeDeclaration, hasIdentificationVariable, initialize, resolveManagedType, resolveType, resolveTypeDeclaration, setIdentificationVariable
Methods inherited from class org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractSingleEncapsulatedExpressionStateObject
addChildren, hasStateObject, isEquivalent, parse, setStateObject, toTextEncapsulatedExpression
Methods inherited from class org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractEncapsulatedExpressionStateObject
toTextInternal
Methods inherited from class org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractStateObject
acceptUnknownVisitor, acceptUnknownVisitor, 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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Constructor Details
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ObjectExpressionStateObject
Creates a newObjectExpressionStateObject
.- Parameters:
parent
- The parent of this state object, which cannot benull
- Throws:
NullPointerException
- The given parent cannot benull
-
ObjectExpressionStateObject
Creates a newObjectExpressionStateObject
.- Parameters:
parent
- The parent of this state object, which cannot benull
identificationVariable
- The name of the identification variable- Throws:
NullPointerException
- The given parent cannot benull
-
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Method Details
-
accept
Description copied from interface:StateObject
Visits thisStateObject
by the givenvisitor
.- Parameters:
visitor
- Thevisitor
to visit this object
-
addProblems
Description copied from class:AbstractStateObject
Adds to the given list the problems that were found with the current state of thisStateObject
, which means there are validation issues.- Overrides:
addProblems
in classAbstractStateObject
- Parameters:
problems
- The list to which the problems are added
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getExpression
Description copied from interface:StateObject
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 classEncapsulatedIdentificationVariableExpressionStateObject
- 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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getIdentifier
Description copied from class:AbstractEncapsulatedExpressionStateObject
Returns the JPQL identifier of the expression represented by thisAbstractSingleEncapsulatedExpressionStateObject
.- Specified by:
getIdentifier
in classAbstractEncapsulatedExpressionStateObject
- Returns:
- The JPQL identifier that is shown before the left parenthesis
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setExpression
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 anOBJECT
expression
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