[rules-users] how to create a list obj for a rule using 'memberOf'

[Wolfgang Laun]

You should add '^' and '$' to avoid matching with part of the type String.
-W

2010/5/10 eyal edri <eyal.edri at gmail.com>

> Thanks!
>
> I've found another way by using 'matches'. though i don't know which one
> is preferable (performance speaking..).
>
> rule "Filter File Types"
>  salience 100 // priority
> when
>  FileType( type matches "(ico|gif|jpg|mov|wmv|jpeg|css|bmp|avi|swf|png)" )
>  then
> //TODO: change to actual action
>  System.out.println("ALLOW");
> end
>
>
> 2010/5/10 Esteban Aliverti <esteban.aliverti at gmail.com>
>
>> Maybe you can define a global List so you would not need to add it as a
>> Fact:
>>
>>
>> *package com.test.drools*
>> * *
>> *import com.test.drools.Facts.FileType;*
>> *
>> *
>> *global java.util.List allowedExtensions;*
>>  * *
>> *rule "Filter File Types"*
>> * *
>> * **when**                *
>> * **FileType( type memberOf allowedExtensions )*
>> * **then*
>> * **System.out.println("ALLOW");*
>> *end*
>>
>> You will need to set the global list before inserting any Fact:
>> ksession.setGlobal("allowedExtensions",somePrePopulatedList);
>>
>> Best,
>>
>>
>> 2010/5/9 eyal edri <eyal.edri at gmail.com>
>>
>>>  Hi,
>>>
>>> sorry for the newbi question, i'm just starting to find my way in Drools.
>>>
>>> i want to  write a rule that filters URLs with a certain suffix (e.g.
>>> jpg, gif, css, etc...).
>>>
>>> i read about global vars and other variables and i'm not sure what to do.
>>>
>>> i need to create a List with all the suffixes i want to filter, should i
>>> create it inside FileType?
>>>
>>> can you help?
>>>
>>> Eyal.
>>> -------------------------------------------
>>>
>>> here's why i had so far:
>>>
>>>
>>> the .drl file:
>>>
>>> *package com.test.drools*
>>> * *
>>> *import com.test.drools.Facts.FileType;*
>>> *
>>> *
>>> * *
>>> *rule "Filter File Types"*
>>> * *
>>> * **when*
>>> *                $fileTypes : ??? *
>>> * **FileType( type memberOf $fileTypes )*
>>> * **then*
>>> * **System.out.println("ALLOW");*
>>> *end*
>>>
>>> here's FileType:
>>>
>>> package com.commtouch.drools;
>>>
>>> import java.net.*;
>>> import java.util.regex.Matcher;
>>> import java.util.regex.Pattern;
>>>
>>> public class Facts {
>>>  // return a file type of a url
>>>  public static class FileType {
>>>
>>> private String type = "html";
>>>
>>> public FileType (URL url) {
>>>  // get the path from the url
>>>  //TODO: use parser to do it?
>>>  String path = url.getPath();
>>>  if (path != null) {
>>>  // define regex to extract file from path
>>>  Pattern fileRegex = Pattern.compile("([^/]+)$");
>>>  Matcher fileMatcher = fileRegex.matcher(path);
>>>      // get regex capure $1 (filename)
>>>  String file = null;
>>>      while (fileMatcher.find())
>>>      file = fileMatcher.group(1);
>>>
>>>      String suffix = null;
>>>      if (file != null)
>>>      {
>>>      //try to extract suffix from file
>>>      Pattern suffixRegex = Pattern.compile("\\.([^\\.]+)$");
>>>  Matcher suffixMatcher = suffixRegex.matcher(file);
>>>  while (suffixMatcher.find())
>>>      suffix = suffixMatcher.group(1);
>>>  //verify that the suffix is a valid suffix
>>>  if (suffix != null && (suffix.length()> 1 && suffix.length() < 6))
>>>  setType(suffix);
>>>      }
>>>  }
>>>  }
>>>
>>>  public void setType(String type) {
>>>  this.type = type;
>>>  }
>>>  public String getType() {
>>>  return type;
>>>  }
>>> }
>>> }
>>>
>>>
>>> --
>>> Eyal Edri
>>>
>>> _______________________________________________
>>> rules-users mailing list
>>> rules-users at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
>>>
>>
>>
>> --
>> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>>
>> Esteban Aliverti
>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>
>
> --
> Eyal Edri
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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