org.apache.tapestry.record
Class SessionPageRecorder
java.lang.Object
|
+--org.apache.tapestry.record.PageRecorder
|
+--org.apache.tapestry.record.SessionPageRecorder
- All Implemented Interfaces:
- ChangeObserver, IPageRecorder
- public class SessionPageRecorder
- extends PageRecorder
Simple implementation of org.apache.tapestry.IPageRecorder
that stores page changes as HttpSession
attributes.
- Version:
- $Id: SessionPageRecorder.java,v 1.4 2003/04/21 13:15:41 glongman Exp $
- Author:
- Howard Ship
Method Summary |
void |
commit()
Simply clears the dirty flag, because there is no external place
to store changed page properties. |
void |
discard()
Invoked at the end of a request cycle in which the
page recorder is discarded (either implicitly, because
the page recorder has no changes, or explicitly
because of IEngine#forgetPage(String) or
PageRecorder.markForDiscard() . |
Collection |
getChanges()
Returns a Collection of
org.apache.tapestry.IPageChange objects
identifying changes to the page and its components. |
boolean |
getHasChanges()
Returns true if the recorder has any changes recorded. |
void |
initialize(String pageName,
IRequestCycle cycle)
Invoked after the recorder is instantiated to initialize
it for the current request cycle. |
protected void |
recordChange(String componentPath,
String propertyName,
Object newValue)
Records a change to a particular component. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
SessionPageRecorder
public SessionPageRecorder()
initialize
public void initialize(String pageName,
IRequestCycle cycle)
- Description copied from interface:
IPageRecorder
- Invoked after the recorder is instantiated to initialize
it for the current request cycle.
- Following copied from interface:
org.apache.tapestry.engine.IPageRecorder
- Parameters:
pageName
- the fully qualified page namecycle
- the current request cycle
discard
public void discard()
- Description copied from interface:
IPageRecorder
- Invoked at the end of a request cycle in which the
page recorder is discarded (either implicitly, because
the page recorder has no changes, or explicitly
because of
IEngine#forgetPage(String)
or
IPageRecorder.markForDiscard()
.
commit
public void commit()
- Simply clears the dirty flag, because there is no external place
to store changed page properties. Sets the locked flag to prevent
subsequent changes from occuring now.
- Overrides:
commit
in class PageRecorder
getHasChanges
public boolean getHasChanges()
- Returns true if the recorder has any changes recorded.
getChanges
public Collection getChanges()
- Description copied from class:
PageRecorder
- Returns a
Collection
of
org.apache.tapestry.IPageChange
objects
identifying changes to the page and its components.
- Overrides:
getChanges
in class PageRecorder
recordChange
protected void recordChange(String componentPath,
String propertyName,
Object newValue)
- Description copied from class:
PageRecorder
- Records a change to a particular component. Subclasses may
cache these in memory, or record them externally at this time.
This method is responsible for setting the dirty flag if
the described change is real.
- Overrides:
recordChange
in class PageRecorder
- Following copied from class:
org.apache.tapestry.record.PageRecorder
- Parameters:
componentPath
- the name of the component relative to the
page which contains it. May be null if the change was to a
property of the page itself.propertyName
- the name of the property which changed.newValue
- the new value for the property, which may also
be null.- See Also:
IComponent.getIdPath()