- For Managers: 8 Ways to Build Trust, 3 to Break It
- Real leaders make space for others to shine. So true and the word "space" is quite meaningful.
- Team Trap #5: Withholding Information
- The Blame Game
From Christopher Avery :
Friday, January 14, 2011
The Path to Management
From Esther Derby :
From Christopher Avery :
From Christopher Avery :
Tuesday, January 4, 2011
About Estimation
Scrum Project Estimation Beyond the Near-Term?
This sort of article (that summarize ML thread) is very very valuable. Thanks to Dan Puckett.
This sort of article (that summarize ML thread) is very very valuable. Thanks to Dan Puckett.
Monday, January 3, 2011
JSF beans getter with Spring AOP
Introduction
JSF can call a getter more than once per request.
For example in the following JSF file :
<html>
<body>
<h:dataTable var="car" value="#{carService.cars}">
<h:column>
<f:facet name="header">
Model
</f:facet>
<h:outputText value="#{car.model}"/>
</h:column>
<h:column>
<f:facet name="header">
Year
</f:facet>
<h:outputText value="#{car.year}"/>
</h:column>
<h:column>
<f:facet name="header">
Manufacturer
</f:facet>
<h:outputText value="#{car.manufacturer}"/>
</h:column>
</h:dataTable>
</body>
</html>JSF will call the carService.cars getter more than once inside the same request.
In this example, JSF calls it three times :
13:39:40 DEBUG : CarService.getCars:17 - qtp17489534-18
13:39:40 DEBUG : CarService.getCars:17 - qtp17489534-18
13:39:40 DEBUG : CarService.getCars:17 - qtp17489534-18
A getter obviously returns a value. This value can be a bean property or a calculated value.
If the value is calculated, this can potentially be a problem.
I googled a bit and found some workarounds.
- The first one was to include a check and see if it has already been calculated.
- The second one was to use the getter only to access bean properties
- The third one was to use Spring AOP and cache the value.
For me, the last workaround is the best one because you do not have to modify the view.
And thanks to Spring, it's quite simple to add AOP with a few annotations.
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