Hi Matthew,
On Dec 22, 2008, at 9:45 AM, Matthew Adams wrote:
Looks pretty good to me. One question, below, though.
On Dec 21, 2008, at 3:41 PM, Craig L Russell wrote:
-<option>: If a parameter begins with a "-" is found, it is added
to the other options list via the addOptions method.
What is the format of the -<option> arguments for unary and non-
unary arguments?
The proposal is that non-standard options are unary only. If you need
parameters, do what Java does with system properties: -
Danything.you.want.here=whatever.value.makes.sense
That is, some options may take no arguments, one argument, or more
than one argument. How does the standard enhancer analyze and pass
these to the implementation?
I struggled with trying to make it work and came up way short.
For example, if I have three vendor-specific arguments foo, bar, and
goo, used like this,
... -r -v -foo -bar bararg -goo gooarg1 gooarg2 acme-domain.jar
how does the standard enhancer know that gooarg1 and gooarg2 are
arguments to not resource or directory names? If the syntax is
<option>[<whitespace><option-value>[<whitespace><option-value>[...]]
I don't think it could. This might require a different format of
the form
<option>[:<option-value>[<whitespace><option-value>[...]]
and the use of platform-specific characters (quotes, double quotes,
etc) to indicate that the option's arguments should be read
together. To avoid this, the form could be instead
<option>[:<option-value>[<option-value-separator><option-value>[...]]
where <option-value-separator> could be in some list of specified
values like comma, semicolon, colon, etc.
WDYT?
I think that we don't need to do anything with -options that are not
standard. Just dump them as is into the options list. There is plenty
of flexibility in the -D pattern. In fact, the main reason for using
white space in the -option <option-parameter> is for ease of parsing
(implementation view) and ease of use (user view). Win win!
Craig
-matthew
Craig L Russell
Architect, Sun Java Enterprise System http://db.apache.org/jdo
408 276-5638 mailto:[email protected]
P.S. A good JDO? O, Gasp!
