Class NotExpressionStateObject
java.lang.Object
org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractStateObject
org.eclipse.persistence.jpa.jpql.tools.model.query.NotExpressionStateObject
- All Implemented Interfaces:
StateObject
BNF: expression ::= NOT conditional_primary
- Since:
- 2.4
- Version:
- 2.4
- See Also:
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Field Summary
Modifier and TypeFieldDescriptionstatic final String
Notifies the state object property has changed. -
Constructor Summary
ConstructorDescriptionNotExpressionStateObject
(StateObject parent) Creates a newNotExpressionStateObject
.NotExpressionStateObject
(StateObject parent, String jpqlFragment) Creates a newNotExpressionStateObject
.NotExpressionStateObject
(StateObject parent, StateObject stateObject) Creates a newNotExpressionStateObject
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Method Summary
Modifier and TypeMethodDescriptionvoid
accept
(StateObjectVisitor visitor) Visits thisStateObject
by the givenvisitor
.protected void
addChildren
(List<StateObject> children) Adds the children of thisStateObject
to the given list.Returns the actual parsed object if thisStateObject
representation of the JPQL query was created by parsing an existing JPQL query.Returns theStateObject
representing the negated expression.boolean
Determines whether theStateObject
representing the encapsulated expression is present or not.boolean
isEquivalent
(StateObject stateObject) Determines whether the givenStateObject
is equivalent to this one, i.e.void
Parses the given JPQL fragment, which represents the negated expression, and creates theStateObject
.void
setExpression
(NotExpression 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
.void
setStateObject
(StateObject stateObject) Sets the givenStateObject
as the new negated expression.protected void
toTextInternal
(Appendable writer) Prints out a string representation of thisStateObject
, which should not be used to define atrue
string representation of a JPQL query but should be used for debugging purposes.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, initialize, isDecorated, parent, parent, parent, removePropertyChangeListener, setExpression, setParent, toString, toString, toStringInternal, toStringItems, toText
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Field Details
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STATE_OBJECT_PROPERTY
Notifies the state object property has changed.- See Also:
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Constructor Details
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NotExpressionStateObject
Creates a newNotExpressionStateObject
.- Parameters:
parent
- The parent of this state object, which cannot benull
- Throws:
NullPointerException
- The given parent cannot benull
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NotExpressionStateObject
Creates a newNotExpressionStateObject
.- Parameters:
parent
- The parent of this state object, which cannot benull
stateObject
- TheStateObject
representing the negated expression- Throws:
NullPointerException
- The given parent cannot benull
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NotExpressionStateObject
Creates a newNotExpressionStateObject
.- Parameters:
parent
- The parent of this state object, which cannot benull
jpqlFragment
- The portion of the JPQL query that followsNOT
, which will be parsed and converted into aStateObject
- Throws:
NullPointerException
- The given parent cannot benull
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Method Details
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accept
Description copied from interface:StateObject
Visits thisStateObject
by the givenvisitor
.- Parameters:
visitor
- Thevisitor
to visit this object
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addChildren
Description copied from class:AbstractStateObject
Adds the children of thisStateObject
to the given list.- Overrides:
addChildren
in classAbstractStateObject
- Parameters:
children
- The list used to store the children
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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 classAbstractStateObject
- 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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getStateObject
Returns theStateObject
representing the negated expression.- Returns:
- The
StateObject
representing the negated expression
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hasStateObject
public boolean hasStateObject()Determines whether theStateObject
representing the encapsulated expression is present or not.- Returns:
true
if the encapsulatedStateObject
is notnull
;false
otherwise
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isEquivalent
Description copied from interface:StateObject
Determines whether the givenStateObject
is equivalent to this one, i.e. the information of bothStateObject
is the same.- Specified by:
isEquivalent
in interfaceStateObject
- Overrides:
isEquivalent
in classAbstractStateObject
- Parameters:
stateObject
- TheStateObject
to compare its content to this one- Returns:
true
if both object are equivalent;false
otherwise
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parse
Parses the given JPQL fragment, which represents the negated expression, and creates theStateObject
.- Parameters:
jpqlFragment
- The portion of the query representing the negated expression
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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 aNOT
expression
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setStateObject
Sets the givenStateObject
as the new negated expression.- Parameters:
stateObject
- TheStateObject
representing the negated expression
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toTextInternal
Description copied from class:AbstractStateObject
Prints out a string representation of thisStateObject
, which should not be used to define atrue
string representation of a JPQL query but should be used for debugging purposes.- Specified by:
toTextInternal
in classAbstractStateObject
- Parameters:
writer
- The writer used to print out the string representation- Throws:
IOException
- This should never happens, it is only required becauseAppendable
is used instead of any concrete class
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