Looks like the code in
net.sf.navigator.displayer.VelocityMenuDisplayer.init() does a bit of
setup, checks for the existence of an overriding velocity.properties
resource bundle, does a bit of looping to set up a new Properties, and then
calls Velocity.init each time the menu is being loaded:
// MR: Copied from VelocityViewServlet to initialize
WebappLoader
Velocity.setApplicationAttribute(SERVLET_CONTEXT_KEY,
pageContext
.getServletContext());
// default to servletlogger, which logs to the servlet
engines log
Velocity.setProperty(RuntimeConstants.RUNTIME_LOG_LOGSYSTEM_CLASS,
ServletLogger.class.getName());
// by default, load resources with webapp resource loader
Velocity.setProperty(RuntimeConstants.RESOURCE_LOADER,
"webapp");
Velocity.setProperty("webapp.resource.loader.class",
WebappLoader.class.getName());
// now all is ready - init Velocity
try {
// look to see if the user has overridden
velocity.properties by
// placing velocity.properties in WEB-INF/classes
ResourceBundle rb = null;
try {
rb = ResourceBundle.getBundle("velocity");
log.debug("got custom velocity.properties
resource bundle");
} catch (MissingResourceException mre) {
// use default
rb = ResourceBundle
.getBundle
("net.sf.navigator.displayer.velocity");
log.debug("using default velocity.properties
resource bundle");
}
Properties props = new Properties();
for (Enumeration keys = rb.getKeys();
keys.hasMoreElements();) {
String key = (String) keys.nextElement();
props.put(key, rb.getString(key));
}
// only initialized the first time it's called,
from:
//
http://jakarta.apache.org/velocity/developer-guide.html
// it's ignored for subsequent calls
Velocity.init(props);
} catch (Exception e) {
log.error("Error initializing Velocity: " +
e.getMessage());
e.printStackTrace();
}
I assume Velocity.init gets cached internally, but reading of the resource
bundle, creating the Properties, etc is getting done each time.
Matt, when you get time, you may want to look at this.
Steve
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