[OT] Entity Modeler, how to create a many to many
Hello, I've been trying to work with Eclipse/WOProject for my latest project, and it seems I can make it:) But actually I'm stick on something which might be obvious: creating a many to many relationship in Entity Modeler. I used to have to select the 2 entities in EOModeler and do join in many to many, but I can't find where's that feature in Entity Modeler... I know I could create the join table, etc but I think I recall a demo of EM at WWDC by Mike Schrag doing something like this...but maybe I'm wrong. Could someone tell me how to make a many to many using Entity Modeler:) Thanks Xavier ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to archive@mail-archive.com
Re: [OT] Entity Modeler, how to create a many to many
And your recall would be right :) Actually, the latest builds have a much fancier relationship dialog, so you might want to upgrade to get all the relationshippy goodness if you haven't already. If you select two entities in the entity tree (outline view), you can then click the New Relationship action and it will bring up the New Relationship Dialog. I love the new versions of this because it even has an option to add the foreign key attribute for you, too, for non- many-to-many's (though I don't recall what it does if you don't use Project Wonder -- it uses prototype 'id' when you have Project Wonder). In the dialog, you can select which sides (or both) of the relationship are to-many, you can name the relationships, you can optionally have it create a foreign key attribute for one-to-many (single foreign key), or you can select the join attributes. ms On Jan 6, 2007, at 3:37 AM, Dev WO wrote: Hello, I've been trying to work with Eclipse/WOProject for my latest project, and it seems I can make it:) But actually I'm stick on something which might be obvious: creating a many to many relationship in Entity Modeler. I used to have to select the 2 entities in EOModeler and do join in many to many, but I can't find where's that feature in Entity Modeler... I know I could create the join table, etc but I think I recall a demo of EM at WWDC by Mike Schrag doing something like this...but maybe I'm wrong. Could someone tell me how to make a many to many using Entity Modeler:) Thanks Xavier ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/mschrag% 40mdimension.com This email sent to [EMAIL PROTECTED] ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to archive@mail-archive.com
Re: [OT] Entity Modeler, how to create a many to many
Thanks a lot Mike, it's just perfect:) Have a nice week end Xavier And your recall would be right :) Actually, the latest builds have a much fancier relationship dialog, so you might want to upgrade to get all the relationshippy goodness if you haven't already. If you select two entities in the entity tree (outline view), you can then click the New Relationship action and it will bring up the New Relationship Dialog. I love the new versions of this because it even has an option to add the foreign key attribute for you, too, for non-many-to-many's (though I don't recall what it does if you don't use Project Wonder -- it uses prototype 'id' when you have Project Wonder). In the dialog, you can select which sides (or both) of the relationship are to-many, you can name the relationships, you can optionally have it create a foreign key attribute for one-to-many (single foreign key), or you can select the join attributes. ms On Jan 6, 2007, at 3:37 AM, Dev WO wrote: Hello, I've been trying to work with Eclipse/WOProject for my latest project, and it seems I can make it:) But actually I'm stick on something which might be obvious: creating a many to many relationship in Entity Modeler. I used to have to select the 2 entities in EOModeler and do join in many to many, but I can't find where's that feature in Entity Modeler... I know I could create the join table, etc but I think I recall a demo of EM at WWDC by Mike Schrag doing something like this...but maybe I'm wrong. Could someone tell me how to make a many to many using Entity Modeler:) Thanks Xavier ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/mschrag% 40mdimension.com This email sent to [EMAIL PROTECTED] ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/webobjects% 40anazys.com This email sent to [EMAIL PROTECTED] ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to archive@mail-archive.com
EOSQLExpression's formatValueForAttribute()
Hi All, There is a method in EOSQLExpression as follows: public String formatValueForAttribute(Object value, EOAttribute attribute) which is supposed to format a value as a string ready for inclusion in a SQL statement / query. However the method doesn't seem to really do what it advertises. It always returns NULL. So I went ahead and decompiled the subclasses all the way to the super class EOSQLExpression: OraclePlugIn$OracleExpression.javaextends JDBCExpression.javaextendsEOSQLExpression.java What I found out is that I'm right. The method doesn't do anything. Either that or I'm missing something. I was interested in formatting NSTimestamp and String values mostly. I see EOSQLExpression has formatStringValue() which I may be able to use for String values. I still need something for NSTimestamp values and I may have to write my own. Any advise on this is appreciated. Thanks ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to archive@mail-archive.com
Re: EOSQLExpression's formatValueForAttribute()
On Jan 6, 2007, at 8:17 AM, Ricardo Parada wrote: Hi All, There is a method in EOSQLExpression as follows: public String formatValueForAttribute(Object value, EOAttribute attribute) which is supposed to format a value as a string ready for inclusion in a SQL statement / query. However the method doesn't seem to really do what it advertises. It always returns NULL. So I went ahead and decompiled the subclasses all the way to the super class EOSQLExpression: OraclePlugIn$OracleExpression.javaextends JDBCExpression.javaextendsEOSQLExpression.java What I found out is that I'm right. The method doesn't do anything. Either that or I'm missing something. I was interested in formatting NSTimestamp and String values mostly. I see EOSQLExpression has formatStringValue() which I may be able to use for String values. I still need something for NSTimestamp values and I may have to write my own. Any advise on this is appreciated. Thanks Decompilation is not guaranteed to give you the complete method. In this method, one of the things it does is return null, but that is not all it does. But it does not have any smarts about any particular adaptor and all it can do is call toString() on something. But this is why the javadoc for the method says: This method should be overridden by subclasses to return a string representation of value suitable for use in an SQL statement, depending on attribute's externalType. This is also why the EOSQLExpression class is abstract. There are implementations for some things, so that subclasses are saved some heavy lifting, but there are things it should not try to do. What is the behavior of the subclass of EOSQLExpression in the adaptor that you are using? Perhaps it is not doing enough in this case. - ray ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to archive@mail-archive.com
