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java.lang.Objectorg.eclipse.persistence.jpa.jpql.model.query.AbstractStateObject
org.eclipse.persistence.jpa.jpql.model.query.ArithmeticFactorStateObject
public class ArithmeticFactorStateObject
This state object simply adds a plus or minus sign to the arithmetic primary expression.
arithmetic_factor ::= [{+|-}] arithmetic_primary
ArithmeticFactor| Field Summary | |
|---|---|
static java.lang.String |
ARITHMETIC_SIGN_PROPERTY
Notifies the arithmetic sign property has changed. |
static java.lang.String |
STATE_OBJECT_PROPERTY
Notifies the state object property has changed. |
| Constructor Summary | |
|---|---|
ArithmeticFactorStateObject(StateObject parent)
Creates a new ArithmeticFactorStateObject. |
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ArithmeticFactorStateObject(StateObject parent,
boolean plusSign,
StateObject stateObject)
Creates a new ArithmeticFactorStateObject. |
|
| Method Summary | |
|---|---|
void |
accept(StateObjectVisitor visitor)
Visits this StateObject by the given visitor. |
protected void |
addChildren(java.util.List<StateObject> children)
Adds the children of this StateObject to the given list. |
void |
addMinus()
Makes sure the - sign is used. |
void |
addPlus()
Makes sure the + sign is used. |
java.lang.String |
getArithmeticSign()
Returns the arithmetic sign this expression is actually representing. |
ArithmeticFactor |
getExpression()
Returns the actual parsed object if this StateObject representation of the JPQL query
was created by parsing an existing JPQL query. |
StateObject |
getStateObject()
Returns the StateObject that represents the arithmetic primary expression. |
boolean |
hasMinusSign()
Determines whether the arithmetic sign is the minus sign. |
boolean |
hasPlusSign()
Determines whether the arithmetic sign is the plus sign. |
boolean |
hasStateObject()
Determines whether an StateObject representing the arithmetic primary expression
exists. |
boolean |
isEquivalent(StateObject stateObject)
Determines whether the given StateObject is equivalent to this one, i.e. the
information of both StateObject is the same. |
void |
parse(java.lang.String jpqlFragment)
Parses the given JPQL fragment to become the new arithmetic primary. |
void |
setArithmeticSign(boolean plusSign)
Sets the arithmetic sign this expression is actually representing. |
void |
setExpression(ArithmeticFactor 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)
Returns the StateObject that represents the arithmetic primary expression. |
void |
toggleArithmeticSign()
Toggles the arithmetic sign, plus becomes minus and vice versa. |
protected void |
toTextInternal(java.lang.Appendable writer)
Prints out a string representation of this StateObject, which should not be used to
define a true string representation of a JPQL query but should be used for
debugging purposes. |
| Methods inherited from class org.eclipse.persistence.jpa.jpql.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 |
| Methods inherited from class java.lang.Object |
|---|
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
| Field Detail |
|---|
public static final java.lang.String ARITHMETIC_SIGN_PROPERTY
public static final java.lang.String STATE_OBJECT_PROPERTY
| Constructor Detail |
|---|
public ArithmeticFactorStateObject(StateObject parent)
ArithmeticFactorStateObject.
parent - The parent of this state object, which cannot be null
java.lang.NullPointerException - The given parent cannot be nullpublic ArithmeticFactorStateObject(StateObject parent, boolean plusSign, StateObject stateObject)
ArithmeticFactorStateObject.
parent - The parent of this state object, which cannot be nullstateObject - The StateObject that represents the arithmetic primary expression
java.lang.NullPointerException - The given parent cannot be null| Method Detail |
|---|
public void accept(StateObjectVisitor visitor)
StateObject by the given visitor.
visitor - The visitor to visit this objectprotected void addChildren(java.util.List<StateObject> children)
StateObject to the given list.
addChildren in class AbstractStateObjectchildren - The list used to store the childrenpublic void addMinus()
- sign is used.
public void addPlus()
+ sign is used.
public java.lang.String getArithmeticSign()
public ArithmeticFactor getExpression()
StateObject representation of the JPQL query
was created by parsing an existing JPQL query.
getExpression in interface StateObjectgetExpression in class AbstractStateObjectStateObject
or null when the JPQL query is manually created (i.e. not from a string)public StateObject getStateObject()
StateObject that represents the arithmetic primary expression.
StateObject that represents the arithmetic primary expression or
null if none was specifiedpublic boolean hasMinusSign()
true if the arithmetic sign is the minus sign; false if it
is the plus signpublic boolean hasPlusSign()
true if the arithmetic sign is the plus sign; false if it
is the minus signpublic boolean hasStateObject()
StateObject representing the arithmetic primary expression
exists.
true if there is the arithmetic primary expression exists; false
otherwisepublic boolean isEquivalent(StateObject stateObject)
StateObject is equivalent to this one, i.e. the
information of both StateObject is the same.
isEquivalent in interface StateObjectisEquivalent in class AbstractStateObjectstateObject - The StateObject to compare its content to this one
true if both object are equivalent; false otherwisepublic void parse(java.lang.String jpqlFragment)
jpqlFragment - A portion of a query that will be parsed and the StateObject that
was created will become the new arithmetic primary of this ArithmeticFactorStateObjectpublic void setArithmeticSign(boolean plusSign)
plusSign - The single character value of the arithmetic sign: '+' (true) or
'-' (false)public void setExpression(ArithmeticFactor 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 an arithmetic
factor expressionpublic void setStateObject(StateObject stateObject)
StateObject that represents the arithmetic primary expression.
stateObject - The StateObject that represents the arithmetic primary expression
or null if none was specifiedpublic void toggleArithmeticSign()
protected void toTextInternal(java.lang.Appendable writer)
throws java.io.IOException
StateObject, which should not be used to
define a true string representation of a JPQL query but should be used for
debugging purposes.
toTextInternal in class AbstractStateObjectwriter - The writer used to print out the string representation
java.io.IOException - This should never happens, it is only required because Appendable
is used instead of any concrete class
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