Re: [flexcoders] Flex with EJB3
Guessing that the AMF deserializer on the client can't rebuild the classes to ActionScript equivalent objects. Can you make a POJO, copy the properties, and put those new objects back in the Array (or Object slots)? Maybe if you put in a basic object that the AMF deserializer understands, you won't get undefined? - Original Message - From: flowbacktome [EMAIL PROTECTED] To: flexcoders@yahoogroups.com Sent: Wednesday, September 28, 2005 9:34 AM Subject: [flexcoders] Flex with EJB3 Hi there, having a strange Problem here: I started using EJB3 and thought that this is a very good choice for middleware coding. So i built my model with it and tested it with Swingclients and it worked out well. So i tried to use Flex1.5 to build a Client. I used the RemoteObject tag and tried to call the amfgateway that comes with Flex - no possibility to call an EJB3, though EJB2 is working. After this experience I installed openamf - with the same result. But having the sourcecode I managed that openamf now is able to call EJB3 after a recompile of the openamf- sources. That worked very well but now I experience a problem when I receive EntityBeans with a ManyToMany relationship: suddenly Objects get transformed to undefined, not all but some. I debugged that on the serverside inside the EJB's, in the openamf- gateway and on the client with no irregularities that caught my eye. So now I am clueless about what causes Objects to get rendered undefined and would appreciate every clue that might help me to deal with this situation. Greetings Bjoern -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links Yahoo! Groups Sponsor ~-- Most low income households are not online. Help bridge the digital divide today! http://us.click.yahoo.com/cd_AJB/QnQLAA/TtwFAA/nhFolB/TM ~- -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [flexcoders] Flex with EJB3
One other thing; are you SURE they are undefined? Sometimes, OpenAMF is notorious for wiping out the toString() method that comes with extending Object, so a trace outputs undefined or null, but it really is an object with valid properties. - Original Message - From: JesterXL [EMAIL PROTECTED] To: flexcoders@yahoogroups.com Sent: Wednesday, September 28, 2005 10:11 AM Subject: Re: [flexcoders] Flex with EJB3 Guessing that the AMF deserializer on the client can't rebuild the classes to ActionScript equivalent objects. Can you make a POJO, copy the properties, and put those new objects back in the Array (or Object slots)? Maybe if you put in a basic object that the AMF deserializer understands, you won't get undefined? - Original Message - From: flowbacktome [EMAIL PROTECTED] To: flexcoders@yahoogroups.com Sent: Wednesday, September 28, 2005 9:34 AM Subject: [flexcoders] Flex with EJB3 Hi there, having a strange Problem here: I started using EJB3 and thought that this is a very good choice for middleware coding. So i built my model with it and tested it with Swingclients and it worked out well. So i tried to use Flex1.5 to build a Client. I used the RemoteObject tag and tried to call the amfgateway that comes with Flex - no possibility to call an EJB3, though EJB2 is working. After this experience I installed openamf - with the same result. But having the sourcecode I managed that openamf now is able to call EJB3 after a recompile of the openamf- sources. That worked very well but now I experience a problem when I receive EntityBeans with a ManyToMany relationship: suddenly Objects get transformed to undefined, not all but some. I debugged that on the serverside inside the EJB's, in the openamf- gateway and on the client with no irregularities that caught my eye. So now I am clueless about what causes Objects to get rendered undefined and would appreciate every clue that might help me to deal with this situation. Greetings Bjoern -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links Yahoo! Groups Sponsor ~-- Fair play? Video games influencing politics. Click and talk back! http://us.click.yahoo.com/T8sf5C/tzNLAA/TtwFAA/nhFolB/TM ~- -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [flexcoders] Flex with EJB3
...hey, I'm with you about breaking the elegance, but if I as a developer can create ActionScript objects, and you as the Java developer can understand them, who cares if the underpinnings aren't elegant, it works. Still, it'd be nice to know what is going on... - Original Message - From: Björn Abt [EMAIL PROTECTED] To: flexcoders@yahoogroups.com Sent: Wednesday, September 28, 2005 10:30 AM Subject: AW: [flexcoders] Flex with EJB3 Hi! Thanks for the quick answer. Well, the EJB3 EntityBeans are basically POJO's. The Beans get deserialized and reach the Flash-App. It fails only when a ManyToMany Relationship exists, but not all the time. Sometimes they get deserialzed and sometimes not. There isn't really a pattern, or at least none that i can see. Maybe i have to rebuild the Model with plain POJO's, but this would in a way break the elegance of the system... Thanks Bjoern -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links Yahoo! Groups Sponsor ~-- Get Bzzzy! (real tools to help you find a job). Welcome to the Sweet Life. http://us.click.yahoo.com/A77XvD/vlQLAA/TtwFAA/nhFolB/TM ~- -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [flexcoders] Flex with EJB3
This almost sounds like it could be related to actionscript not having the correct Java mappings. This can cause these types of headaches. Try creating dummy variables for all the classes used in the transaction at Flex application layer. I.E. var dummyObject : DummyObject (Where DummyObject is your actual ActionScript class) Heres why: Lets say you have a one-to-many relationship with 2 objects. If Object1 has many Object2s, then Object1 should have an array containing multiple Object2s. If Object2 has never been declared in actionscript yet, then Object2 will be undefined (Yet you will be able to trace its properties) Make sure Object1 is registered with actionscript (Object.registerClass) and Object2 is also registered with Actionscript (Try making dummy variables for each of these). Since the Object.registerClass is in the AS class, it will only be executed if the class has been declared in your application somewhere. Complex objects will come back as undefined if they dont have mapped AS counterparts. The reason there may not be a pattern to this is because certain objects will be declared in certain methods only, and those methods may not be executed yet. Object Casting can also be enough to kick in the object mappings. Thats why you usually dont have to declare any dummy variables. Dustin Mercer From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com] On Behalf Of JesterXL Sent: Wednesday, September 28, 2005 8:23 AM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] Flex with EJB3 ...hey, I'm with you about breaking the elegance, but if I as a developer can create ActionScript objects, and you as the Java developer can understand them, who cares if the underpinnings aren't elegant, it works. Still, it'd be nice to know what is going on... - Original Message - From: Björn Abt [EMAIL PROTECTED] To: flexcoders@yahoogroups.com Sent: Wednesday, September 28, 2005 10:30 AM Subject: AW: [flexcoders] Flex with EJB3 Hi! Thanks for the quick answer. Well, the EJB3 EntityBeans are basically POJO's. The Beans get deserialized and reach the Flash-App. It fails only when a ManyToMany Relationship exists, but not all the time. Sometimes they get deserialzed and sometimes not. There isn't really a pattern, or at least none that i can see. Maybe i have to rebuild the Model with plain POJO's, but this would in a way break the elegance of the system... Thanks Bjoern -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com SPONSORED LINKS Web site design development Computer software development Software design and development Macromedia flex Software development best practice YAHOO! GROUPS LINKS Visit your group "flexcoders" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
