#triggerCommit and #triggerFlush. This Trigger class works around an inconvenient situation when using a general ValueHolder as trigger channel of a BufferedValueModel. BufferedValueHolder performs commit and flush events only if the trigger channel value reports a change. And a ValueHolder doesn't report a change if #setValue tries to set the current value. For example if you set Boolean.TRUE twice, the latter doesn't fire a property change event. The methods #triggerCommit and #triggerFlush check for the current state and guarantee that the appropriate PropertyChangeEvent is fired. On the other hand, the implementation minimizes the number of events necessary to commit or flush buffered values.
Constraints: The value is of type Boolean.
The following example delays the commit of a buffered value:
ValueModel subject = new ValueHolder(); Trigger trigger = new Trigger(); BufferedValueModel buffer = new BufferedValueModel(subject, trigger); buffer.setValue("value"); ... trigger.triggerCommit();
@author Karsten Lentzsch
@version $Revision: 1.5 $
@see BufferedValueModel Copyright (c) 2002-2005 JGoodies Karsten Lentzsch. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: o Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. o Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. o Neither the name of JGoodies Karsten Lentzsch nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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