oracle.ide.model
Class DataContainer

java.lang.Object
  oracle.ide.model.DefaultDisplayable
      oracle.ide.model.DefaultElement
          oracle.ide.model.DefaultDocument
              oracle.ide.model.DefaultNode
                  oracle.ide.model.DataNode
                      oracle.ide.model.DataContainer

All Implemented Interfaces:

Category, Container, Data, Dirtyable, Displayable, Document, Element, Folder, LazyLoadable, Locatable, Node, Subject

Direct Known Subclasses:

IdeSystem, MiscellaneousFolder, Project, Workspace

public class DataContainer

extends DataNode

implements Container

Field Summary

protected java.util.List

_children The "final" modifier makes it possible to synchronize on the _children object, since its value can never change.

Fields inherited from class oracle.ide.model.DataNode

_objectStore

Fields inherited from interface oracle.ide.addin.Subject

OBJECT_MODIFIED

Fields inherited from interface oracle.ide.model.Category

UNDEFINED

Constructor Summary

DataContainer()
Default constructor.

DataContainer(java.net.URL url)

Method Summary

boolean	add(java.util.Collection childElements, boolean notify) Adds a Collection of Element objects to the child list for the container.
boolean	add(Element element) Part of the Folder interface.
boolean	add(Element element, boolean notify) This is a variant of the Folder.add(Element) method that accepts an additional flag that indicates whether or not notifications of the change should be sent to registered observers.
boolean	canAdd(Element element) Part of the Folder interface.
boolean	canRemove(Element element) Part of the Folder interface.
void	close() Closes the Document and unloads any associated data.
boolean	containsChild(Element child) Returns true if the folder contains the specified child Element; returns false otherwise.
protected void	copyToImpl(DataContainer copy) Design pattern for supporting strongly typed copying.
java.lang.String	getBaseDirectory()
java.util.Iterator	getChildren() Part of the Element interface.
java.util.List	getListOfChildren() Fulfills the public accessor part of the Folder contract.
boolean	mayHaveChildren() Part of the Element interface.
boolean	remove(Element element) Part of the Folder interface.
boolean	remove(Element element, boolean notify) This is a variant of the Folder.remove(Element) method that accepts an additional flag that indiciates whether or not notifications of the change should be sent to registered observers.
void	removeAll() Removes all children from the folder.
void	removeAll(boolean notify) Removes all elements in the Container.
protected void	resetSubDirtyableOwners(java.util.List children) Resets the owner of each element listed.
void	setListOfChildren(java.util.List list) Fulfills the public accessor part of the Folder contract.
protected void	setSubDirtyableOwner(Element element, Dirtyable owner) Sets the owner of this element to the specified element.
int	size() Returns the current number of children in the folder.

Methods inherited from class oracle.ide.model.DataNode

currentObjectStore, fireObjectOpened, getURL, open, open, reopen, save, setObjectStore

Methods inherited from class oracle.ide.model.DefaultNode

equalsImpl, getCategory, setURL

Methods inherited from class oracle.ide.model.DefaultDocument

attach, copyToImpl, createSubject, detach, ensureOpen, equalsImpl, getInputStream, getLongLabel, getShortLabel, getSubject, getTimestamp, getTimestampDirectly, getToolTipText, isDirty, isNew, isOpen, isReadOnly, markDirty, notifyObservers, refreshTimestamp, setOpen, setTimestampDirectly, setURLDirectly

Methods inherited from class oracle.ide.model.DefaultElement

getAttributes, getData

Methods inherited from class oracle.ide.model.DefaultDisplayable

getIcon, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface oracle.ide.model.Document

getInputStream, getTimestamp, isNew, isReadOnly, open, save

Methods inherited from interface oracle.ide.model.Locatable

getURL, setURL

Methods inherited from interface oracle.ide.model.Element

getAttributes

Methods inherited from interface oracle.ide.model.Data

getData

Methods inherited from interface oracle.ide.model.Displayable

getIcon, getLongLabel, getShortLabel, getToolTipText, toString

Methods inherited from interface oracle.ide.addin.Subject

attach, detach, notifyObservers

Methods inherited from interface oracle.ide.model.Dirtyable

isDirty, markDirty

Methods inherited from interface oracle.ide.model.LazyLoadable

isOpen

Methods inherited from interface oracle.ide.model.Category

getCategory

Field Detail

_children

protected final java.util.List _children

The "final" modifier makes it possible to synchronize on the _children object, since its value can never change.

Constructor Detail

DataContainer

public DataContainer()

Default constructor. Required for JavaBean status.

DataContainer

public DataContainer(java.net.URL url)

Method Detail

getListOfChildren

public java.util.List getListOfChildren()

Fulfills the public accessor part of the Folder contract.

Returns:

a List view of the child @{link Element}s contained by this DataFolder.

setListOfChildren

public void setListOfChildren(java.util.List list)

Fulfills the public accessor part of the Folder contract. Sets the child list of the DataFolder instance to match the specified List. Only objects in the List that can be cast to Element are added. The implementation uses the DefaultFolder.add(Element) method to add the child to the list, so that subclass implementations can override DefaultFolder.add(Element) without having to also override this method.

mayHaveChildren

public boolean mayHaveChildren()

Part of the Element interface. This implementation always returns true.

Specified by:

mayHaveChildren in interface Element

Overrides:

mayHaveChildren in class DefaultElement

See Also:

Element.mayHaveChildren()

getChildren

public java.util.Iterator getChildren()

Part of the Element interface. This implementation returns an Iterator over the current list of children.

Specified by:

getChildren in interface Element

Overrides:

getChildren in class DefaultElement

See Also:

Element.getChildren()

canAdd

public boolean canAdd(Element element)

Part of the Folder interface. The default implementation returns true if and only if the specified Element is not null.

Specified by:

canAdd in interface Folder

Parameters:

element - the Element that is about to be added to this Folder.

Returns:

true if and only if the specified Element is not null.

See Also:

Folder.canAdd(Element)

add

public boolean add(Element element)

Part of the Folder interface. The specified Element is added to the end of the child list. However, if the Element is null, this method does nothing.

No notification is fired by this method.

Specified by:

add in interface Folder

See Also:

Folder.add(oracle.ide.model.Element)

canRemove

public boolean canRemove(Element element)

Part of the Folder interface. The default implementation returns true if and only if the specified Element is not null.

Specified by:

canRemove in interface Folder

Parameters:

element - the Element that is about to be removed from this Folder.

Returns:

true if and only if the specified Element is not null.

See Also:

Folder.canRemove(Element)

remove

public boolean remove(Element element)

Part of the Folder interface. The specified Element is removed from the child list. However, if the Element is null, this method does nothing. If the Element occurs more than once in the child list, then only the first instance is removed.

No notification is fired by this method.

Specified by:

remove in interface Folder

Parameters:

element - The child object to remove.

See Also:

Folder.remove(Element)

containsChild

public boolean containsChild(Element child)

Description copied from interface: Folder

Returns true if the folder contains the specified child Element; returns false otherwise.

Specified by:

containsChild in interface Folder

size

public int size()

Description copied from interface: Folder

Returns the current number of children in the folder.

Specified by:

size in interface Folder

removeAll

public void removeAll()

Description copied from interface: Folder

Removes all children from the folder.

Specified by:

removeAll in interface Folder

add

public boolean add(Element element,
                   boolean notify)

Description copied from interface: Container

This is a variant of the Folder.add(Element) method that accepts an additional flag that indicates whether or not notifications of the change should be sent to registered observers.

Specified by:

add in interface Container

Parameters:

element - The Element to be added to this Container.

notify - If true, any observers are notified of the change. If false, no notification is sent.

remove

public boolean remove(Element element,
                      boolean notify)

Description copied from interface: Container

This is a variant of the Folder.remove(Element) method that accepts an additional flag that indiciates whether or not notifications of the change should be sent to registered observers.

Specified by:

remove in interface Container

Parameters:

element - The Element to be removed from this Container.

notify - If true, any observers are notified of the change. If false, no notification is sent.

removeAll

public void removeAll(boolean notify)

Description copied from interface: Container

Removes all elements in the Container. The notify flag indicates whether observers should be notified of the change.

Specified by:

removeAll in interface Container

Parameters:

notify - If true, any observers are notified of the change. If false, no notification is sent.

getBaseDirectory

public final java.lang.String getBaseDirectory()

close

public void close()

Description copied from interface: Document

Closes the Document and unloads any associated data. When this method returns, the state of the Document object should be equivalent to when the Document object has just been instantiated but not yet opened.

Specified by:

close in interface Document

Overrides:

close in class DataNode

add

public boolean add(java.util.Collection childElements,
                   boolean notify)

Adds a Collection of Element objects to the child list for the container. Each Element is added with the add(Element, boolean) method. If an Object in the Collection is not an Element or if an Element cannot be added to the container, then it is skipped and false is returned; the other Element objects in the Collection will still be added, however.

copyToImpl

protected final void copyToImpl(DataContainer copy)

Design pattern for supporting strongly typed copying.

This method is intended to be helper method that subclasses can use, if they implement the Copyable interface. The copy of the children list is a shallow copy. That is, the children themselves are not copied, but the list is copied.

resetSubDirtyableOwners

protected void resetSubDirtyableOwners(java.util.List children)

Resets the owner of each element listed. Ownership here refers to the element that owns a SubDirtyable element. When a sub-dirtyable element is made dirty it actually makes its owner dirty.

setSubDirtyableOwner

protected void setSubDirtyableOwner(Element element,
                                    Dirtyable owner)

Sets the owner of this element to the specified element. When a sub-dirtyable object is made dirty it actually makes its owner dirty.