Re: Tutorial marketplace scenario ready
Antollini, Mario wrote: Comments in-line... Mario -Original Message- From: Jean-Sebastien Delfino [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 15, 2008 6:17 AM To: tuscany-dev@ws.apache.org Subject: Re: Tutorial marketplace scenario ready Antollini, Mario wrote: I have finished coding the tutorial marketplace scenario. I have attached all the necessary files in https://issues.apache.org/jira/browse/TUSCANY-2224 Mario, that looks pretty good, I just got it working :) One minor comment: MarketCatalogImpl could be simplified a bit to call each catalog once instead of twice. OK, I can do it for sure. I did not focus on having an efficient MarketCatalog implementation. But you are right, I need to fix that. And some ideas: - We could add more catalogs to the list (a local one, the Web service ones, and the EJB catalog running on Geronimo) to really leverage the reference with multiplicity 0..n. We'd just need to change the contents of the different catalogs (for example have fruits/vegetables from different places). That raises an interesting question about the mix of bindings that can be used on a reference with multiplicity 0..n. Can different targets use different bindings or do they have to all use the same binding? I think it's worth investigating. I am glad that you brought this up. Actually, I struggled with this many hours. At first, I tried to do what you suggested (having heterogeneous bindings for the catalog reference). I wanted the Market catalog to bind to the Fruit catalog locally (an internal component) and the Vegetables one through web services. I tried very hard, but I did not manage to get it working. I tried different approaches but none worked. Therefore I decided to use bind to both the fruits and vegetables catalog through web services (this worked right away). Do you think this heterogeneous binding issue could be a Tuscany issue? I think so. It would be worth double checking with the spec but I think that the following pattern: ... should just work and for each target pick the binding that matches the target service binding. If it doesn't it's a bug, which can be fixed :) - Use standalone elements in a different .composite file in a different contribution to wire the goodsCatalog reference to the catalogs. IMO this is a typical scenario where people want to add catalogs without changing the market contribution which has already been installed in the domain. I tried with the element as well but it did not work either. I think it's worth investigating. What error are you getting with wires? However, I did not try with different composite files. Can you give me more details about this, please? The idea is that the wires can be put in any composite (you just need to add that composite to your domain): - the composite containing the client component, this is very much like using the target attribute on its references - the composite containing the target component, more interesting as it allows that new component to be wired to an existing component reference without touching the contribution containing that existing component. - any other composite, even more interesting as it allows you to wire two components together without touching their contributions at all. - Another idea, add a Web Service binding to your StoreMarket catalog component, add a markup to the prices, and that makes it a broker :) Do you mean to expose the marketplace as a service using web services? Yes, just add a to it. Thoughts? -- Jean-Sebastien -- Jean-Sebastien - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tutorial marketplace scenario ready
Comments in-line... Mario -Original Message- From: Jean-Sebastien Delfino [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 15, 2008 6:17 AM To: tuscany-dev@ws.apache.org Subject: Re: Tutorial marketplace scenario ready Antollini, Mario wrote: >> I have finished coding the tutorial marketplace scenario. >> >> I have attached all the necessary files in >> https://issues.apache.org/jira/browse/TUSCANY-2224 >> > > Mario, that looks pretty good, I just got it working :) > > One minor comment: > > MarketCatalogImpl could be simplified a bit to call each catalog once > instead of twice. OK, I can do it for sure. I did not focus on having an efficient MarketCatalog implementation. But you are right, I need to fix that. > And some ideas: > > - We could add more catalogs to the list (a local one, the Web service > ones, and the EJB catalog running on Geronimo) to really leverage the > reference with multiplicity 0..n. We'd just need to change the contents > of the different catalogs (for example have fruits/vegetables from > different places). > > That raises an interesting question about the mix of bindings that can > be used on a reference with multiplicity 0..n. Can different targets use > different bindings or do they have to all use the same binding? I think > it's worth investigating. I am glad that you brought this up. Actually, I struggled with this many hours. At first, I tried to do what you suggested (having heterogeneous bindings for the catalog reference). I wanted the Market catalog to bind to the Fruit catalog locally (an internal component) and the Vegetables one through web services. I tried very hard, but I did not manage to get it working. I tried different approaches but none worked. Therefore I decided to use bind to both the fruits and vegetables catalog through web services (this worked right away). Do you think this heterogeneous binding issue could be a Tuscany issue? > - Use standalone elements in a different .composite file in a > different contribution to wire the goodsCatalog reference to the catalogs. > IMO this is a typical scenario where people want to add catalogs without > changing the market contribution which has already been installed in the > domain. I tried with the element as well but it did not work either. However, I did not try with different composite files. Can you give me more details about this, please? > - Another idea, add a Web Service binding to your StoreMarket catalog > component, add a markup to the prices, and that makes it a broker :) Do you mean to expose the marketplace as a service using web services? > Thoughts? > -- > Jean-Sebastien - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tutorial marketplace scenario ready
Antollini, Mario wrote: I have finished coding the tutorial marketplace scenario. I have attached all the necessary files in https://issues.apache.org/jira/browse/TUSCANY-2224 Mario, that looks pretty good, I just got it working :) One minor comment: MarketCatalogImpl could be simplified a bit to call each catalog once instead of twice. And some ideas: - We could add more catalogs to the list (a local one, the Web service ones, and the EJB catalog running on Geronimo) to really leverage the reference with multiplicity 0..n. We'd just need to change the contents of the different catalogs (for example have fruits/vegetables from different places). That raises an interesting question about the mix of bindings that can be used on a reference with multiplicity 0..n. Can different targets use different bindings or do they have to all use the same binding? I think it's worth investigating. - Use standalone elements in a different .composite file in a different contribution to wire the goodsCatalog reference to the catalogs. IMO this is a typical scenario where people want to add catalogs without changing the market contribution which has already been installed in the domain. - Another idea, add a Web Service binding to your StoreMarket catalog component, add a markup to the prices, and that makes it a broker :) Thoughts? -- Jean-Sebastien - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
