Hi,
I want to parse a file and match the file for several regular expressions.
Based on what I match, I write more
rules so that based on all the rules, I can set my results.
Brute force method : Parse the entire file and add all the lines into the
working memory. Write rules that
check each line for some regular expression. This works great.
I want to optimize the above, as we are checking each line, if we got we are
looking for, then I want to get out.
So, I wrote a function inside the rule file like the below
function String getLine(BufferedReader fileReader) {
String line;
try {
if ((line = fileReader.readLine()) != null) {
return line.toLowerCase();
} else {
System.out.println("This is an empty line.");
}
} catch (Exception ex) {
}
return line;
}
Now, I need to write the rules that will use this.
rule "Generate New Line"
when
eval (getLine(fileReader) != null)
then
System.out.println("Generate new line");
//assert(getLine(fileReader)); // need to somehow assert the line
specified in the eval condition
end
Also, I am confused, how to specify file end.
rule "File End"
when
eval (getLine(fileReader) == null)
then
System.out.println("Reached end of file"); // I am assuming this is
not needed since if all rules are executed, then it will get out of
fireRules() anyways ?
end
Any help is appreciated.
TIA,
Krishnan (newbie)
-
Sivaramakrishna Iyer Krishnan (Anand)
Never assume the obvious is true.
- William Safire
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