Since no one else is repling, i will tell you how i do it.
It is most diffently wrong by any standard, but it does work quite well
for us, and has over many different situation including
develpment in eclipse.
deployed in a war.
deployed in a unpacked war.
unit tests via ant & cruise control.
it's a bit complex, so i'll layout the basics.
I will send the files i use if you want them, but i'm pretty sure the list
server strips attachments off, so i'll do it by request.
first, we create a convience function to setup the parameters.
then when you want to parse a template. call it and pass a context aware
as a call back.
lets look at the setup. you will still need some sort of configuration,
for us, it's lumped with all are other configurations for the purpose of a
single file. but for here i'm going to hard code.
there is a natural refactoring here that creates to functions.
the very generic.
public static Writer parse(String template, Properties props,
ContextAware process[], Writer out)
the semi generic
public static String parse(String template, Properties props,
ContextAware[] process)
and of course the project specific. which is what you would write.
again, since we are either reading from jar / file, here's mine.
/***********************************************************************/
public static String parseJarFile(String template, ContextAware process)
{
Properties props = getProperties();
return VelocityParser.parse(template, props, new
ContextAware[]{process, Default.INSTANCE});
}
/***********************************************************************/
private static Properties getProperties()
{
Properties props = new Properties();
if (Config.FORCE_ACTUAL_FILE_INSTEAD_OF_JAR)
{
props.put("resource.loader", "file");
props.put("file.resource.loader.path", getPath());
props.put("file.resource.cache", "" + true);
}
else
{
props.put("resource.loader", "class");
props.put("class.resource.loader.description", "Velocity
ServletContext Resource Loader");
props.put("class.resource.loader.class",
"com.spun.util.velocity.ServletContextLoader");
props.put("class.resource.cache", "" + true);
ServletContextLoader.registerServletContext(BasicCompanyServlet.getContext());
props.put("class.resource.loader.path",
"/WEB-INF/resources/templates/" + ", " +"/");
}
props.put("runtime.introspector.uberspect",
"com.spun.util.velocity.TestableUberspect");
props.put("velocimacro.context.localscope", "" + true);
props.put("velocimacro.permissions.allow.inline.local.scope", "" + true);
return props;
}
/***********************************************************************/
private static String getPath()
{
if (path == null)
{
path = Config.ALTERNATIVE_TEMPLATE_DIRECTORY + ", " +
Config.TEMPLATE_DIRECTORY + ", " +
convertDirectory(Config.getAlternativeHtmlDirectory())
+ ", " + convertDirectory(Config.getHtmlDirectory());
My_System.variable("path", path);
}
return path;
}
/***********************************************************************/
as i understand your situation, you would just want the file reader part
of this.
the last part is to write a class that can be parsed. i'll make and
example here.
class Family implement ContextAware
{
Person mom, dad, brother, sister;
String getFamilyTreeAsHtml()
{
VelocityParser.parse("template.htm", this);
}
public void setupContext(Context context)
{
context.put("mom",mom);
context.put("dad",dad);
context.put("sister",sister);
context.put("brother",brother);
}
}
anyways, this works well for us, has the distinct advantage, of being able
to break/log/troubleshoot the different settings you are passing in. if
you want more just ask.
llewellyn
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