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java.lang.Objectorg.eclipse.persistence.jpa.jpql.model.query.AbstractStateObject
org.eclipse.persistence.jpa.jpql.model.query.CollectionExpressionStateObject
public final class CollectionExpressionStateObject
This StateObject
is a temporary object used to store a list of StateObjects
. Those objects are not parented. StateObjectVisitor
is not aware of this
object either, to visit it, the visitor will be notified via reflection, see AbstractStateObject.acceptUnknownVisitor(StateObjectVisitor)
.
CollectionExpression
Constructor Summary | |
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CollectionExpressionStateObject(StateObject parent,
java.util.List<? extends StateObject> items)
Creates a new CollectionExpressionStateObject . |
Method Summary | |
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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. |
protected boolean |
areChildrenEquivalent(CollectionExpressionStateObject stateObject)
Determines whether the children of this StateObject are equivalent to the children
of the given one, i.e. the information of the StateObjects is the same. |
CollectionExpression |
getExpression()
Returns the actual parsed object if this StateObject representation of the JPQL query
was created by parsing an existing JPQL query. |
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 |
setExpression(CollectionExpression 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 . |
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 |
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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 |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public CollectionExpressionStateObject(StateObject parent, java.util.List<? extends StateObject> items)
CollectionExpressionStateObject
.
parent
- The parent of this state object, which cannot be null
items
- The list of children owned by this state object
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 AbstractStateObject
children
- The list used to store the childrenprotected boolean areChildrenEquivalent(CollectionExpressionStateObject stateObject)
StateObject
are equivalent to the children
of the given one, i.e. the information of the StateObjects
is the same.
stateObject
- The StateObject
to compare its children to this one's children
true
if both have equivalent children; false
otherwisepublic CollectionExpression getExpression()
StateObject
representation of the JPQL query
was created by parsing an existing JPQL query.
getExpression
in interface StateObject
getExpression
in class AbstractStateObject
StateObject
or null
when the JPQL query is manually created (i.e. not from a string)public boolean isEquivalent(StateObject stateObject)
StateObject
is equivalent to this one, i.e. the
information of both StateObject
is the same.
isEquivalent
in interface StateObject
isEquivalent
in class AbstractStateObject
stateObject
- The StateObject
to compare its content to this one
true
if both object are equivalent; false
otherwisepublic void setExpression(CollectionExpression 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 a collection
expressionprotected 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 AbstractStateObject
writer
- 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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