Re: JESS: Maintaining session in JESS
On Jun 24, 2008, at 2:51 PM, Deepak Pol wrote: Now following are some questions I have: 1. Since the rules defined are being applied to any data, I want the rules to be created once and shared by different sessions for different data. For eg there can be a rule which says if total 100 then return list of users u1, u2 and u3. Now for different organizations total can be different and each organization can run rules engine with its own data but the rules themselves are same so I want to share them across different organizations. Each organization will have its own session and data and the same rules in the memory are executed with this data. What I found in Jess docs was, you need to initialize the rule engine by using new Rete(); and add the rule language file (*.clp) and the data to the working memory. But like in above example, if I want to add the data for some other organization but for the same rules then I need to create another instance of Rete and provide the rule language file to it in which case I end up having one file in working memory for each organization. Is there any way to avoid this and share the file for different data or for different sessions? Yes, in several different ways. First of all, you don't need to hard code values like 100 in the rules; you can supply these as data. For example, a rule might say if total threshold then return list of users and then each client could supply their own value of threshold. That way the rules are the same for everybody. Secondly, you can have multiple values of threshold in the same engine at the same time. You could have if processing client #1 and total for client #1 threshold for client #1 then... Finally, multiple instances of the rule engine can share a single loaded set of rules; this is called peering and it's new in Jess 7.1, which is about to go final. 2. As per my understanding, the only way to control the flow of rules execution is by creating different modules. No, that's just one way. If I have a condition like if Module_1 fires (i.e at least one rule from module is fired) the focus module_2 else focus module_3. This conditions can get even more complex. And also note that all rules from module_1 should get fired so I can't have focus statement in action part of any rule of module_1 since it will immediately focus to new module and other rules from module_1 would be skipped. Currenly I am planning to do it by having a global variable for each such condition. For eg if any rule from module_1 is fired then make this variable true and use it for further control. But as the conditions become more and more complex and provided that I want to create the language through some apis against using an existing one; I am not sure how much feasible this would be. Any suggestions on this? There's a concept of a focus stack. The focus stack keeps track of the order in which modules will be activated. You can add and remove modules from the stack at any time. So you an easily express when all the rules in this module have fired, proceed to module 2. 3. I want to have some modules (which would be set of rules) which are exclusive i.e. only one of them should fire even if others also match. I can do this with auto-focus for the first rule in each module but how to avoid others from firing. I tried halt but didn't work. Retracting the facts as soon as they fire is not a feasible option since the same fact might be used in some other rule in the same module which I still want to fire. There are other ways to do this besides retracting facts; for instance, you can do it by asserting a fact signaling that one of the rules has fired, then make all the rules in the set match the absence of that fact. Any help in above ragards would be really appreciable. Thanks in advance, - Deepak - Ernest Friedman-Hill Informatics Decision Sciences, Sandia National Laboratories PO Box 969, MS 9012, Livermore, CA 94550 http://www.jessrules.com To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: Maintaining session in JESS
Deepak Pol wrote: Now following are some questions I have: 1. Since the rules defined are being applied to any data, I want the rules to be created once and shared by different sessions for different data. For eg there can be a rule which says if total 100 then return list of users u1, u2 and u3. Now for different organizations total can be different and each organization can run rules engine with its own data but the rules themselves are same so I want to share them across different organizations. Each organization will have its own session and data and the same rules in the memory are executed with this data. What I found in Jess docs was, you need to initialize the rule engine by using new Rete(); and add the rule language file (*.clp) and the data to the working memory. But like in above example, if I want to add the data for some other organization but for the same rules then I need to create another instance of Rete and provide the rule language file to it in which case I end up having one file in working memory for each organization. Is there any way to avoid this and share the file for different data or for different sessions? You could write the rules so that they use the data that depends on the organization via defglobal variables or as slots of some Parameter fact(s). This means that you have one file, say, rules.clp that can be used in each session/Rete. The setup of the defglobals or the Parameter fact(s) would require one additional .clp file for each organization. 2. As per my understanding, the only way to control the flow of rules execution is by creating different modules. If I have a condition like if Module_1 fires (i.e at least one rule from module is fired) the focus module_2 else focus module_3. This conditions can get even more complex. And also note that all rules from module_1 should get fired so I can't have focus statement in action part of any rule of module_1 since it will immediately focus to new module and other rules from module_1 would be skipped. Currenly I am planning to do it by having a global variable for each such condition. For eg if any rule from module_1 is fired then make this variable true and use it for further control. But as the conditions become more and more complex and provided that I want to create the language through some apis against using an existing one; I am not sure how much feasible this would be. Any suggestions on this? The paradigm of controlling the execution flow is somewhat contradictionary to the principle of rule firing. I'd suggest that you reconsider the requirement you have formulated here. Do the rules of module_2 really depend on some modification made by module_1? In this case, consider the solution I propose for your 3rd question, and generalize it so that the todo value enables or disables various rule sets (which would not even be in different modules). Or is it just so that the outputs from rule firing should appear in some order? Then, just collect them in some Bag fact or slot and output them at the end. 3. I want to have some modules (which would be set of rules) which are exclusive i.e. only one of them should fire even if others also match. I can do this with auto-focus for the first rule in each module but how to avoid others from firing. I tried halt but didn't work. Retracting the facts as soon as they fire is not a feasible option since the same fact might be used in some other rule in the same module which I still want to fire. The standard solution to this scenario is to add a todo slot to your fact(s), initialize it with TRUE (deftemplate Foo (slot a)... (slot todo (type SYMBOL)(default TRUE))) and modify it to FALSE as soon as it is processed by some rule: (defrule Bar ?f - (Foo (a ?a)...(todo TRUE)) = ... (modify ?f (todo FALSE)) ) HTH Wolfgang Any help in above ragards would be really appreciable. Thanks in advance, - Deepak To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: NRL for Jess
On Jun 24, 2008, at 8:53 AM, Peter Lin wrote: I'm going to disagree that NRL is an anti-pattern. OK. It all depends on how you use it. Agreed... though since I having a tendency to be querolous, I'd change how to when. I've successfully designed and built custom business rule languages in the past. The key is keeping the domain well defined and narrow. I am tempted to envy you a bit here (in that the scope has been defined and narrow enough to capture in a DSL, but interesting enough to warrant an expert system shell). Don't try to make a DSL that is a general purpose language. Agreed. Unfortunately, it's been my experience that there is a significant risk that a customer will drive DSLs inexorably towards a general rule language. For example, say I want to create a rule language for defining privacy rules for mobile phones. ...crisp example elided (nothing to quibble about) ... Once you have enough rules to get a good idea of the scope, you can start designing the language. Generally at the point the scope is clearly resolved in the projects I'm thinking of, the bulk of the rules work has mostly been done. The rules development coincided with exploring the subject domain with one (or a handful) of experts. The maintenance of the rules that followed been associated with a few experts at most, along with a knowledge engineer, and at fairly low change rates. Changing the rules in a mobile phone privacy system or a message routing system would seem to have a lot more rule-editing users, and a more constrained capability than sendmail + scripting would still be useful without a high risk of scope creep. Writing the parser is heavily dependent on how solid the DSL is. Once you have the parser, converting to JESS is straight forward. That seems reasonable. No argument that the parser - Jess conversion should be mechanical, if a good DSL can be designed. But the effort requires enough users/usage to justify. Some rule patterns can even be simplified into fact assertions, meta- rule to interpret them. OTOH, the problem has to be constrained very well, or this approach can fail in a manner analogous to a overly specific DSL. Perhaps the key is that one must the problem well enough defined before attempting to define a DSL. Analysis first, /then/ DSL design decisions. - Mike To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: How to parse the Conditions ?
Hi,
I am trying to parse this .clp file from the documentation.
(deftemplate person (slot firstname) (slot lastname) (slot age))
(defrule welcome-toddlers
Give a special greeting to young children
(person {age 3})
=
(printout t Hello, little one! crlf))
Here my Code:
public static void main(String[] args) throws FileNotFoundException,
IOException, JessException {
Rete engine = new Rete();
FileReader file = new FileReader(M:/ikor/myrules.txt);
Context context = engine.getGlobalContext();
try {
Jesp parser = new Jesp(file, engine);
Object result = Funcall.TRUE;
while (!result.equals(Funcall.EOF)) {
result = parser.parseExpression(context, false);
if (result instanceof Defrule) {
Defrule rule = (Defrule) result;
ConditionalElement ce = rule.getConditionalElements();
int gs = ce.getGroupSize();
for (int j=0;jgs;j++) {
ConditionalElement e = ce.getConditionalElement(j);
System.out.println(e.toString());
}
}
}
} finally {
file.close();
}
}
I only get Main:: person .
How can I get {age 3} ?
Thanks a lot
Bernd Enders
--
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Re: JESS: NRL for Jess
the cost versus benefit definitely is an important consideration. In the past, I built custom languages for privacy rules and regulatory compliance rules, which are sufficiently narrow. I definitely wouldn't attempt a DSL for general business rules. That will most likely result in a nightmare. peter On Wed, Jun 25, 2008 at 1:50 AM, Michael Smith [EMAIL PROTECTED] wrote: On Jun 24, 2008, at 8:53 AM, Peter Lin wrote: I'm going to disagree that NRL is an anti-pattern. OK. It all depends on how you use it. Agreed... though since I having a tendency to be querolous, I'd change how to when. I've successfully designed and built custom business rule languages in the past. The key is keeping the domain well defined and narrow. I am tempted to envy you a bit here (in that the scope has been defined and narrow enough to capture in a DSL, but interesting enough to warrant an expert system shell). Don't try to make a DSL that is a general purpose language. Agreed. Unfortunately, it's been my experience that there is a significant risk that a customer will drive DSLs inexorably towards a general rule language. For example, say I want to create a rule language for defining privacy rules for mobile phones. ...crisp example elided (nothing to quibble about) ... Once you have enough rules to get a good idea of the scope, you can start designing the language. Generally at the point the scope is clearly resolved in the projects I'm thinking of, the bulk of the rules work has mostly been done. The rules development coincided with exploring the subject domain with one (or a handful) of experts. The maintenance of the rules that followed been associated with a few experts at most, along with a knowledge engineer, and at fairly low change rates. Changing the rules in a mobile phone privacy system or a message routing system would seem to have a lot more rule-editing users, and a more constrained capability than sendmail + scripting would still be useful without a high risk of scope creep. Writing the parser is heavily dependent on how solid the DSL is. Once you have the parser, converting to JESS is straight forward. That seems reasonable. No argument that the parser - Jess conversion should be mechanical, if a good DSL can be designed. But the effort requires enough users/usage to justify. Some rule patterns can even be simplified into fact assertions, meta- rule to interpret them. OTOH, the problem has to be constrained very well, or this approach can fail in a manner analogous to a overly specific DSL. Perhaps the key is that one must the problem well enough defined before attempting to define a DSL. Analysis first, /then/ DSL design decisions. - Mike To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: How to parse the Conditions ?
On Jun 25, 2008, at 7:12 AM, benders wrote:
Hi,
I am trying to parse this .clp file from the documentation.
You've already parsed it with the parseExpression line. I'm not sure
what you're trying to do after that, but it's not parsing. Just
examining the data structures for the rule? If you let us know what
you're doing we might have more helpful advice.
for (int j=0;jgs;j++) {
ConditionalElement e =
ce.getConditionalElement(j);
System.out.println(e.toString());
A ConditionalElement is either a Pattern or a Group; you can use
isGroup() to tell the difference. If it's not a Group, you can cast
it to jess.Pattern, and use the (much larger) API of that class to
extract information about the slots and the tests they contain.
-
Ernest Friedman-Hill
Informatics Decision Sciences, Sandia National Laboratories
PO Box 969, MS 9012, Livermore, CA 94550
http://www.jessrules.com
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Re: JESS: How to parse the Conditions ?
You have to determine the class of a ConditionalElement (this is an
interface for things common to Pattern, Group and Accumulate. If it is a
Pattern, you proceed by iterating over the tests, either thos in a
particular slot or over all.
Add this after your println:
if( e instanceof Pattern ){
Pattern p = (Pattern)e;
Iterator? titer = p.getTests( );
while( titer.hasNext() ){
Object o = titer.next();
System.out.println( test: + o.toString() );
}
}
On 6/25/08, benders [EMAIL PROTECTED] wrote:
Hi,
I am trying to parse this .clp file from the documentation.
(deftemplate person (slot firstname) (slot lastname) (slot age))
(defrule welcome-toddlers
Give a special greeting to young children
(person {age 3})
=
(printout t Hello, little one! crlf))
Here my Code:
public static void main(String[] args) throws FileNotFoundException,
IOException, JessException {
Rete engine = new Rete();
FileReader file = new FileReader(M:/ikor/myrules.txt);
Context context = engine.getGlobalContext();
try {
Jesp parser = new Jesp(file, engine);
Object result = Funcall.TRUE;
while (!result.equals(Funcall.EOF)) {
result = parser.parseExpression(context, false);
if (result instanceof Defrule) {
Defrule rule = (Defrule) result;
ConditionalElement ce = rule.getConditionalElements();
int gs = ce.getGroupSize();
for (int j=0;jgs;j++) {
ConditionalElement e = ce.getConditionalElement(j);
System.out.println(e.toString());
}
}
}
} finally {
file.close();
}
}
I only get Main:: person .
How can I get {age 3} ?
Thanks a lot
Bernd Enders
--
View this message in context:
http://www.nabble.com/How-to-parse-the-Conditions---tp18109883p18109883.html
Sent from the Jess mailing list archive at Nabble.com.
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in the BODY of a message to [EMAIL PROTECTED], NOT to the list
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Re: JESS: Clues on the Crash-On-Save issue
Hi, Just letting everybody know that I have the problem again... Eclipse EE + Jess 71RC1 + Subclipse = random crash on save Don't know if Subclipse brings anything new, though... Cheers, Henrique Jason Morris wrote: Hi Henrique, I just did the same thing since I was crashing Eclipse almost every time I saved from the Jess editor. Ernest is evaluating whether or not the problem is coming from the MyEclipseIDE plugins or if there is a conflict with Eclipse proper. So far, running a pristine Eclipse Europa Winter version without the MyEclipseIDE installed but with the stable Jess 7.0p2 plugins and not the betas, I have not locked-up (yet). Keep us posted on anything you find out! :-) Cheers, Jason On Mon, Mar 17, 2008 at 8:17 AM, Henrique Lopes Cardoso [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Hi all, After a morning starting with those annoying crashes, I decided to install the latest Eclipse IDE for Java EE Developers. Then I installed Jess 71b2 plugins for Eclipse. Apparently the crash-on-save problems are gone! But you never know -- it might be too soon to open the champagne... ;) Cheers, --- Jason Morris Morris Technical Solutions LLC http://www.morris-technical-solutions.com To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: Clues on the Crash-On-Save issue
Hi Henrique , I know. :-) Mine still does it too. I guess all the other Jess users just aren't doing it right. :-D I use the latest stable Subversive plugin for my SVN, but that doesn't seem to affect stability. What does is when I try to run Jess on an Eclipse install that has the MyEclipseIDE plugins installed. I've been maintaining two installs of Eclipse to avoid this, but it's an awful kludge. As always, the Save completes, but the editor hangs Eclipse and it never recovers. I have to kill the Eclipse process in Task Manager and restart the workbench -- often with loss of workbench state. So far, it's been like trying to provide Ernest with pictures of Bigfoot. You and I have seen it... but nobody else believes us. :-) Cheers, Jason On Wed, Jun 25, 2008 at 10:52 AM, Henrique Lopes Cardoso [EMAIL PROTECTED] wrote: Hi, Just letting everybody know that I have the problem again... Eclipse EE + Jess 71RC1 + Subclipse = random crash on save Don't know if Subclipse brings anything new, though... Cheers, Henrique Jason Morris wrote: Hi Henrique, I just did the same thing since I was crashing Eclipse almost every time I saved from the Jess editor. Ernest is evaluating whether or not the problem is coming from the MyEclipseIDE plugins or if there is a conflict with Eclipse proper. So far, running a pristine Eclipse Europa Winter version without the MyEclipseIDE installed but with the stable Jess 7.0p2 plugins and not the betas, I have not locked-up (yet). Keep us posted on anything you find out! :-) Cheers, Jason On Mon, Mar 17, 2008 at 8:17 AM, Henrique Lopes Cardoso [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Hi all, After a morning starting with those annoying crashes, I decided to install the latest Eclipse IDE for Java EE Developers. Then I installed Jess 71b2 plugins for Eclipse. Apparently the crash-on-save problems are gone! But you never know -- it might be too soon to open the champagne... ;) Cheers, --- Jason Morris Morris Technical Solutions LLC http://www.morris-technical-solutions.com To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] -- --- Jason Morris Morris Technical Solutions LLC [EMAIL PROTECTED] (517) 304-5883
Re: JESS: Clues on the Crash-On-Save issue
I definitely believe you, I just don't know how to proceed. Any stack traces or other info about a hung Eclipse instance would be most welcome. On Jun 25, 2008, at 12:00 PM, Jason Morris wrote: Hi Henrique , I know. :-) Mine still does it too. I guess all the other Jess users just aren't doing it right. :-D I use the latest stable Subversive plugin for my SVN, but that doesn't seem to affect stability. What does is when I try to run Jess on an Eclipse install that has the MyEclipseIDE plugins installed. I've been maintaining two installs of Eclipse to avoid this, but it's an awful kludge. As always, the Save completes, but the editor hangs Eclipse and it never recovers. I have to kill the Eclipse process in Task Manager and restart the workbench -- often with loss of workbench state. So far, it's been like trying to provide Ernest with pictures of Bigfoot. You and I have seen it... but nobody else believes us. :-) Cheers, Jason On Wed, Jun 25, 2008 at 10:52 AM, Henrique Lopes Cardoso [EMAIL PROTECTED] wrote: Hi, Just letting everybody know that I have the problem again... Eclipse EE + Jess 71RC1 + Subclipse = random crash on save Don't know if Subclipse brings anything new, though... Cheers, Henrique Jason Morris wrote: Hi Henrique, I just did the same thing since I was crashing Eclipse almost every time I saved from the Jess editor. Ernest is evaluating whether or not the problem is coming from the MyEclipseIDE plugins or if there is a conflict with Eclipse proper. So far, running a pristine Eclipse Europa Winter version without the MyEclipseIDE installed but with the stable Jess 7.0p2 plugins and not the betas, I have not locked-up (yet). Keep us posted on anything you find out! :-) Cheers, Jason On Mon, Mar 17, 2008 at 8:17 AM, Henrique Lopes Cardoso [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Hi all, After a morning starting with those annoying crashes, I decided to install the latest Eclipse IDE for Java EE Developers. Then I installed Jess 71b2 plugins for Eclipse. Apparently the crash-on-save problems are gone! But you never know -- it might be too soon to open the champagne... ;) Cheers, --- Jason Morris Morris Technical Solutions LLC http://www.morris-technical-solutions.com To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] . -- --- Jason Morris Morris Technical Solutions LLC [EMAIL PROTECTED] (517) 304-5883 - Ernest Friedman-Hill Informatics Decision Sciences, Sandia National Laboratories PO Box 969, MS 9012, Livermore, CA 94550 http://www.jessrules.com To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: installing JessDE
Hi It's been more than a month for me trying frustaingly to install the JessDE on Eclipse but they all failed. To install JessDE, I've downloaded both the Eclipse Classic 3.4 and the Eclipse IDE for Java EE Developers from the Eclipse website, then saved them both on my desktop, installed and ran Eclipse. After exitting Eclipse, for each Eclipse version, I coppied all the files from Jess70/eclipse and pasted in my Desktop/eclipse file, then extracted them. When I checked the Desktop/eclipse/plugins, but the gov.sandia.jess_7.0.0 did not appear, nor did any of the other gov.sandia... files exist under their corresponding directories. Therefore, no such Jess logo appeared in the EclipseHelpAbout Eclipse Platform. I even tried transferring the Jess files to their Eclipse directories manually but they still didn't show up in the Plugin Details under EclipseHelpAbout Eclipse Platform. Could anyone tell me where I'm wrong. Where is the top-level Eclipse installation directory meant to be? Is extracting a file equavalent to unzipping a file (unzip was not an option for the files, only extract was there)? Once Jess does function in Eclipse, how do we open/create a *.clp file in it? Thank you
Re: JESS: installing JessDE
Hi Seyed, I've personally not tried JESS in 3.4 yet. (it get's officially released today), however i wouldn't expect any major problems due to backward compatibility. Please could you go into help-software updates - manage configuration. You should have 3 buttons, that show various groups in the tree below. Make sure all three are on, especially the 3rd one, show disabled features. Now navigate the tree and see if you can find any reference to JESS. If it is there, check what issues jess has and report them to us for further advice, If you have no JESS entries, then the problem rests with where the plugins and features are put on your system. Close eclipse The base directory is eclipse (from what you have said, Desktop/Eclipse) and should contain a plugins and features directory as well as the eclipse binary. The jess download has a folder called eclipse, and in that there are 5 zip files. If you extract these 5 zip files to the one directory (say c:\temp\jess) you should find 2 folders. These two folders are plugins and features. Copy both folders to your eclipse directory (overwrite is ok, as it will merge old folders with new) Now run eclipse, and follow the same checks for the features... (remember to clean up your temp directory afterwards) Hope that helps. Gary seyed hossein wrote: Hi It's been more than a month for me trying frustaingly to install the JessDE on Eclipse but they all failed. To install JessDE, I've downloaded both the Eclipse Classic 3.4 and the Eclipse IDE for Java EE Developers from the Eclipse website, then saved them both on my desktop, installed and ran Eclipse. After exitting Eclipse, for each Eclipse version, I coppied all the files from Jess70/eclipse and pasted in my Desktop/eclipse file, then extracted them. When I checked the Desktop/eclipse/plugins, but the gov.sandia.jess_7.0.0 did not appear, nor did any of the other gov.sandia... files exist under their corresponding directories. Therefore, no such Jess logo appeared in the EclipseHelpAbout Eclipse Platform. I even tried transferring the Jess files to their Eclipse directories manually but they still didn't show up in the Plugin Details under EclipseHelpAbout Eclipse Platform. Could anyone tell me where I'm wrong. Where is the top-level Eclipse installation directory meant to be? Is extracting a file equavalent to unzipping a file (unzip was not an option for the files, only extract was there)? Once Jess does function in Eclipse, how do we open/create a *.clp file in it? Thank you -- _ Gary Napier Alpha Lab Institute for Energy and Environment Department of Electronic and Electrical Engineering University of Strathclyde Royal College Building 204 George Street Glasgow G1 1XW e: [EMAIL PROTECTED] t: 0141 548 2665 To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: installing JessDE
Hi Seyed, It's been more than a month for me trying frustaingly to install the JessDE on Eclipse but they all failed. Hers is another thing that you may want to try: You said that you installed Eclipse to the Windows Desktop. Typically, the DOS path to the desktop looks like: C:\Documents and Settings\(username)\Desktop Now, historically there have been issues with running Eclipse from a directory which has spaces in its full path, especially its plugins. See http://dev.eclipse.org/newslists/news.eclipse.technology.imp/msg00089.html For that reason, you might want to install Eclipse to C:\ or C:\Programs(but not C:\Program Files where program code would normally go). In any case, it's probably not a good idea to install application code to your desktop for Windows security reasons. The Documents and Settings folder is a high priority target of many viruses, and it's usually public so that apps can access it. For example, you can see that cookies get written there. Hope this helps, too! Cheers, Jason On Wed, Jun 25, 2008 at 2:59 PM, Gary Napier [EMAIL PROTECTED] wrote: Hi Seyed, I've personally not tried JESS in 3.4 yet. (it get's officially released today), however i wouldn't expect any major problems due to backward compatibility. Please could you go into help-software updates - manage configuration. You should have 3 buttons, that show various groups in the tree below. Make sure all three are on, especially the 3rd one, show disabled features. Now navigate the tree and see if you can find any reference to JESS. If it is there, check what issues jess has and report them to us for further advice, If you have no JESS entries, then the problem rests with where the plugins and features are put on your system. Close eclipse The base directory is eclipse (from what you have said, Desktop/Eclipse) and should contain a plugins and features directory as well as the eclipse binary. The jess download has a folder called eclipse, and in that there are 5 zip files. If you extract these 5 zip files to the one directory (say c:\temp\jess) you should find 2 folders. These two folders are plugins and features. Copy both folders to your eclipse directory (overwrite is ok, as it will merge old folders with new) Now run eclipse, and follow the same checks for the features... (remember to clean up your temp directory afterwards) Hope that helps. Gary seyed hossein wrote: Hi It's been more than a month for me trying frustaingly to install the JessDE on Eclipse but they all failed. To install JessDE, I've downloaded both the Eclipse Classic 3.4 and the Eclipse IDE for Java EE Developers from the Eclipse website, then saved them both on my desktop, installed and ran Eclipse. After exitting Eclipse, for each Eclipse version, I coppied all the files from Jess70/eclipse and pasted in my Desktop/eclipse file, then extracted them. When I checked the Desktop/eclipse/plugins, but the gov.sandia.jess_7.0.0 did not appear, nor did any of the other gov.sandia... files exist under their corresponding directories. Therefore, no such Jess logo appeared in the EclipseHelpAbout Eclipse Platform. I even tried transferring the Jess files to their Eclipse directories manually but they still didn't show up in the Plugin Details under EclipseHelpAbout Eclipse Platform. Could anyone tell me where I'm wrong. Where is the top-level Eclipse installation directory meant to be? Is extracting a file equavalent to unzipping a file (unzip was not an option for the files, only extract was there)? Once Jess does function in Eclipse, how do we open/create a *.clp file in it? Thank you -- _ Gary Napier Alpha Lab Institute for Energy and Environment Department of Electronic and Electrical Engineering University of Strathclyde Royal College Building 204 George Street Glasgow G1 1XW e: [EMAIL PROTECTED] t: 0141 548 2665 To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] -- --- Jason Morris Morris Technical Solutions LLC [EMAIL PROTECTED] (517) 304-5883
