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From b..@apache.org
Subject cvs commit: db-ojb/src/doc/forrest/src/documentation/content/xdocs/docu/guides query.xml
Date Sat, 15 Jan 2005 13:09:22 GMT
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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