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Java Source Code / Java Documentation » Database ORM » JPOX » org.jpox.sco.simple 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.util.AbstractQueue
   org.jpox.sco.simple.Queue

Queue
public class Queue extends AbstractQueue implements SCOCollection,SCOMtoN,Cloneable,java.io.Serializable(Code)
A mutable second-class Queue object. This is the simplified form that intercepts mutators and marks the field as dirty.
version:
   $Revision: 1.3 $


Field Summary
final protected static  LocaliserLOCALISER
    
protected  booleanallowNulls
    
protected  java.util.Queuedelegate
     The internal "delegate".
protected  StringfieldName
    
protected  intfieldNumber
    
protected  Objectowner
    
protected  StateManagerownerSM
    

Constructor Summary
public  Queue(StateManager ownerSM, String fieldName)
     Constructor.

Method Summary
public synchronized  booleanadd(Object element)
     Method to add an element to the Collection.
public synchronized  booleanaddAll(java.util.Collection elements)
     Method to add a collection of elements.
Parameters:
  elements - The collection of elements to add.
public  voidattachCopy(Object value)
     Method to return an attached copy of the passed (detached) value.
public synchronized  voidclear()
     Method to clear the Collection.
public  Objectclone()
     Creates and returns a copy of this object.

Mutable second-class Objects are required to provide a public clone method in order to allow for copying PersistenceCapable objects.

public synchronized  booleancontains(Object element)
     Accessor for whether an element is contained in the Collection.
public synchronized  booleancontainsAll(java.util.Collection c)
     Accessor for whether a collection of elements are contained here.
Parameters:
  c - The collection of elements.
public  ObjectdetachCopy(FetchPlanState state)
     Method to return a detached copy of the container.
public synchronized  booleanequals(Object o)
     Equality operator.
Parameters:
  o - The object to compare against.
public  voidflush()
     Method to flush the changes to the datastore when operating in queued mode.
public  StringgetFieldName()
     Accessor for the field name.
public  ObjectgetOwner()
     Accessor for the owner object.
public  ObjectgetValue()
     Accessor for the unwrapped value that we are wrapping.
public synchronized  inthashCode()
     Hashcode operator.
public  voidinitialise(Object o, boolean forInsert, boolean forUpdate)
     Method to initialise the SCO from an existing value.
public  voidinitialise()
     Method to initialise the SCO for use.
protected  voidinitialiseDelegate()
     Convenience method to set up the delegate respecting any comparator specified in MetaData.
public synchronized  booleanisEmpty()
     Accessor for whether the Collection is empty.
public synchronized  Iteratoriterator()
     Accessor for an iterator for the Collection.
public  voidload()
     Method to effect the load of the data in the SCO.
public  voidmakeDirty()
    
public synchronized  booleanoffer(Object element)
     Method to offer an element to the Queue.
public synchronized  Objectpeek()
     Method to peek at the next element in the Queue.
public synchronized  Objectpoll()
     Method to poll the next element in the Queue.
public synchronized  booleanremove(Object element)
    
public synchronized  booleanremove(Object element, boolean allowCascadeDelete)
    
public synchronized  booleanremoveAll(java.util.Collection elements)
     Method to remove a Collection of elements.
public synchronized  booleanretainAll(java.util.Collection c)
     Method to retain a Collection of elements (and remove all others).
public synchronized  intsize()
     Accessor for the size of the Collection.
public synchronized  Object[]toArray()
     Method to return the Collection as an array.
public synchronized  Object[]toArray(Object a)
     Method to return the Collection as an array.
public synchronized  voidunsetOwner()
     Method to unset the owner and field information.
public  voidupdateEmbeddedElement(Object element, int fieldNumber, Object value)
     Method to update an embedded element in this collection.
protected  ObjectwriteReplace()
     The writeReplace method is called when ObjectOutputStream is preparing to write the object to the stream.

Field Detail
LOCALISER
final protected static Localiser LOCALISER(Code)



allowNulls
protected boolean allowNulls(Code)



delegate
protected java.util.Queue delegate(Code)
The internal "delegate".



fieldName
protected String fieldName(Code)



fieldNumber
protected int fieldNumber(Code)



owner
protected Object owner(Code)



ownerSM
protected StateManager ownerSM(Code)




Constructor Detail
Queue
public Queue(StateManager ownerSM, String fieldName)(Code)
Constructor.
Parameters:
  ownerSM - The State Manager for this set.
Parameters:
  fieldName - Name of the field




Method Detail
add
public synchronized boolean add(Object element)(Code)
Method to add an element to the Collection.
Parameters:
  element - The element to add Whether it was added successfully.



addAll
public synchronized boolean addAll(java.util.Collection elements)(Code)
Method to add a collection of elements.
Parameters:
  elements - The collection of elements to add. Whether they were added successfully.



attachCopy
public void attachCopy(Object value)(Code)
Method to return an attached copy of the passed (detached) value. The returned attached copy is a SCO wrapper. Goes through the existing elements in the store for this owner field and removes ones no longer present, and adds new elements. All elements in the (detached) value are attached.
Parameters:
  value - The new (collection) value



clear
public synchronized void clear()(Code)
Method to clear the Collection.



clone
public Object clone()(Code)
Creates and returns a copy of this object.

Mutable second-class Objects are required to provide a public clone method in order to allow for copying PersistenceCapable objects. In contrast to Object.clone(), this method must not throw a CloneNotSupportedException. A clone of the object




contains
public synchronized boolean contains(Object element)(Code)
Accessor for whether an element is contained in the Collection.
Parameters:
  element - The element Whether the element is contained here



containsAll
public synchronized boolean containsAll(java.util.Collection c)(Code)
Accessor for whether a collection of elements are contained here.
Parameters:
  c - The collection of elements. Whether they are contained.



detachCopy
public Object detachCopy(FetchPlanState state)(Code)
Method to return a detached copy of the container. Recurses through the elements so that they are likewise detached.
Parameters:
  state - State for detachment process The detached container



equals
public synchronized boolean equals(Object o)(Code)
Equality operator.
Parameters:
  o - The object to compare against. Whether this object is the same.



flush
public void flush()(Code)
Method to flush the changes to the datastore when operating in queued mode. Does nothing in "direct" mode.



getFieldName
public String getFieldName()(Code)
Accessor for the field name. The field name



getOwner
public Object getOwner()(Code)
Accessor for the owner object. The owner object



getValue
public Object getValue()(Code)
Accessor for the unwrapped value that we are wrapping. The unwrapped value



hashCode
public synchronized int hashCode()(Code)
Hashcode operator. The Hash code.



initialise
public void initialise(Object o, boolean forInsert, boolean forUpdate)(Code)
Method to initialise the SCO from an existing value.
Parameters:
  o - The object to set from
Parameters:
  forInsert - Whether the object needs inserting in the datastore with this value
Parameters:
  forUpdate - Whether to update the datastore with this value



initialise
public void initialise()(Code)
Method to initialise the SCO for use.



initialiseDelegate
protected void initialiseDelegate()(Code)
Convenience method to set up the delegate respecting any comparator specified in MetaData.



isEmpty
public synchronized boolean isEmpty()(Code)
Accessor for whether the Collection is empty. Whether it is empty.



iterator
public synchronized Iterator iterator()(Code)
Accessor for an iterator for the Collection. The iterator



load
public void load()(Code)
Method to effect the load of the data in the SCO. Used when the SCO supports lazy-loading to tell it to load all now.



makeDirty
public void makeDirty()(Code)
Utility to mark the object as dirty



offer
public synchronized boolean offer(Object element)(Code)
Method to offer an element to the Queue.
Parameters:
  element - The element to offer Whether it was added successfully.



peek
public synchronized Object peek()(Code)
Method to peek at the next element in the Queue. The element



poll
public synchronized Object poll()(Code)
Method to poll the next element in the Queue. The element (now removed)



remove
public synchronized boolean remove(Object element)(Code)
Method to remove an element from the List
Parameters:
  element - The Element to remove Whether it was removed successfully.



remove
public synchronized boolean remove(Object element, boolean allowCascadeDelete)(Code)
Method to remove an element from the List
Parameters:
  element - The Element to remove Whether it was removed successfully.



removeAll
public synchronized boolean removeAll(java.util.Collection elements)(Code)
Method to remove a Collection of elements.
Parameters:
  elements - The collection to remove Whether they were removed successfully.



retainAll
public synchronized boolean retainAll(java.util.Collection c)(Code)
Method to retain a Collection of elements (and remove all others).
Parameters:
  c - The collection to retain Whether they were retained successfully.



size
public synchronized int size()(Code)
Accessor for the size of the Collection. The size



toArray
public synchronized Object[] toArray()(Code)
Method to return the Collection as an array. The array



toArray
public synchronized Object[] toArray(Object a)(Code)
Method to return the Collection as an array.
Parameters:
  a - The array to write the results to The array



unsetOwner
public synchronized void unsetOwner()(Code)
Method to unset the owner and field information.



updateEmbeddedElement
public void updateEmbeddedElement(Object element, int fieldNumber, Object value)(Code)
Method to update an embedded element in this collection.
Parameters:
  element - The element
Parameters:
  fieldNumber - Number of field in the element
Parameters:
  value - New value for this field



writeReplace
protected Object writeReplace() throws ObjectStreamException(Code)
The writeReplace method is called when ObjectOutputStream is preparing to write the object to the stream. The ObjectOutputStream checks whether the class defines the writeReplace method. If the method is defined, the writeReplace method is called to allow the object to designate its replacement in the stream. The object returned should be either of the same type as the object passed in or an object that when read and resolved will result in an object of a type that is compatible with all references to the object. the replaced object
throws:
  ObjectStreamException -



Methods inherited from java.util.AbstractQueue
public boolean add(E e)(Code)(Java Doc)
public boolean addAll(Collection<? extends E> c)(Code)(Java Doc)
public void clear()(Code)(Java Doc)
public E element()(Code)(Java Doc)
public E remove()(Code)(Java Doc)

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