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Hello!
Can somebody tell me how SODA behaves for querying Lists? Assumed that Foo is a class which got a field (List _bars) which holds Bar-Objects and I want to get all Foos which got a special Bar. Does this Query
Query q = _objectContainer.query();q.constrain(Foo.class);q.descend(''_bars'').constrain(special_bar); // special_bar is a ...
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hi All,
We are using DB4o as our cache layer in our web-app - we get all the benefits of the B-Tree based system for free :). It works great. However there are couple of problems that keep surfacing intermittently all the time
1. S.O.D.A query doesnt fetch an object present in the db. We opened the file in ObjectManager and tried the same query, ...
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Hi,we are new users in db4o and have the following problem using a java class construct like:class Folder { Stirng name; List mails;}
class Mail { String subject;}Now we have some folders (e.g. ''inbox'', ''sent'' ...) containing mails.We are trying to search for mails with a subject ...
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Hi,
Sorry for late feedback - I have been busy with other development. Just wanted to summarize:
- On the original question about OR union and custom evaluators - I solved my problem by running several queries and then using collections and operating on them to make the OR or AND. Maybe not as quick and politically correct, but it gets the job ...
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Db4o does not respond correctly to a query on an index field of type long.
The query in this example restricts the result set to a range of values.
query.execute() delivers an empty result set if the upper limit of the range is a value which does not exist in the database.
I have not investigated wether this bug also appears if ...
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