Hello, ... Really? Actually I think this is more theory than practice. The way I see it, there are users that would like a more hands on approach document so...
Hello, I have just implemented the support to test the presence of an object in a collection used to establish an 1-many or many-many relationship. That is...
Hello, I have just implemented the support to test the presence of an object in a collection used to establish an 1-many or many-many relationship. That is...
... I think an EXIST sub-select is semantically the right thing to use for the in-operator. After all, we are interested in filtering out the objects or rows...
Hi there ! Thanks for implementing the "in" operator. However, I found a slight bug... I have two classes(tabArt and tabCarModel) that are related(collections...
Hello, ... I tried this and it generates the SQL the way it is intended. I even added a function addtocollection to confirm that the in operand is using the...
Indeed, it seems I got it wrong regarding the patch. What do you think about using EXIST for implementing the "in"-operator ? Regards, Carl Michael Skog...
Hello, ... The in operator should not use sub-selects there is a solution that does not require sub-selects, and so, it works on databases that do not support...
Hello, ... Maybe I am missing something here but in practice using NOT EXISTS or NOT IN, it is the same thing. ... Right, but I am trying to avoid sub-selects...
... Hi ! ... More or less. IN subquery enumerates values to be used the query, whereas enumerates rows. These are equivalent: SELECT * FROM t1 WHERE id IN...
Hello, ... Right, this difference detail will be more important when multiple explicit OID fields will be supported. I think that is a good reason to opt for...
Hello ! ... The "in" operator is about filtering a set of objects on the property of the objects in that set being part of a relation to another class of...
Hello, ... I am not sure if that is what you are thinking but currently an object may not be related to another object more than once. Even if by design you...
Hello, ... Thanks. I need to study this better to decide whether it is worth to try LEFT JOIN or NOT EXISTS for implementing not in. I want to release a new...
Hello, I have just finished to integrate with the Metastorage distribution the XMI to Metastorage tool developed by Peter Howard. In case you do not know, XMI...
Hello, A new version of Metastorage was released to introduce two new operators of the Object Query Language (OQL) that provide better capabilities to browse...
Hi all, I'm trying to generate a simple appliction with metastorage, but when I try to compile I'm getting this error: Compilation results Status: Failed ...
Hello, ... I suspect you are using HTML entities. You cannot use HTML entities unless you declare them in the DTD, except for < > and &. If you use HTML...
Hello, This messages is just to let you know about another system developed with code generated by Metastorage. It is the PHP Classes site blog. It has means...
Hi, I'm new to metastorage. I installed and created a component and some classes and ran the metastorage command line tool to generate things. FYI, I'm using...
Hello, ... I suspect that this has to due with known bugs in PHP <= 5.0.4 (and also PHP <= 4.4.1) that make PHP not be able to traverse array structures ...
Hello, ... Now, that you mentioned, I double checked and there was indeed a bug of complaining about missing class definitions when all classes are defined ...
I downloaded from http://www.meta-language.net/download.html I wouldn't have expected to have to download from CVS for a "current" version. I would normally...
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