brj 2005/01/15 05:09:22
Modified: src/doc/forrest/src/documentation/content/xdocs/docu/guides
query.xml
Log:
limitations of report-queries: added problem with expressions
Revision Changes Path
1.3 +6 -2
db-ojb/src/doc/forrest/src/documentation/content/xdocs/docu/guides/query.xml
Index: query.xml
===================================================================
RCS file:
/home/cvs/db-ojb/src/doc/forrest/src/documentation/content/xdocs/docu/guides/query.xml,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -r1.2 -r1.3
--- query.xml 8 Sep 2004 18:38:40 -0000 1.2
+++ query.xml 15 Jan 2005 13:09:22 -0000 1.3
@@ -294,7 +294,7 @@
Collection results = broker.getCollectionByQuery(q);]]></source>
<note>
- Subqueries are not extent aware. Thus it's not possible
to use an abstract class or an interface as search
+ Subqueries are not extent aware. Thus it's not possible
to use an abstract class or an interface as search
class of a subquery.
</note>
</section>
@@ -663,6 +663,10 @@
<section>
<title>Limitations of Report Queries</title>
+ <p>
+ ReportQueries currently only support simple arithmetic
expressions (ie. price * 1.05).
+ Expressions based on multiple attributes (ie. price -
bonus) do not work.
+ </p>
<p>
ReportQueries should not be used with columns referencing
classes with extents. Assume we want to select all ProductGroups
and summarize the amount and prize of items in stock per
group. The class Article referenced by <strong>allArticlesInGroup</strong>
has the extents Books and CDs.
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