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From "Michael Gentry" <blackn...@gmail.com>
Subject Re: No DataMap found, can't route query
Date Tue, 04 Mar 2008 21:55:09 GMT
Look at where Eclipse built your .class files/etc and make sure that
it did indeed put your cayenne.xml file in there when it built the
project.  It needs to be at the top-level of that classpath.

/dev/mrg


On Tue, Mar 4, 2008 at 4:02 PM, Mary-Anne Wolf <mgw@mocasystems.com> wrote:
> I am just starting to use Cayenne.  After successfully reverse
>  engineering a database and generating Java classes, I have written this
>  minimal program
>
>     public static void main(String[] args) {
>
>         DataContext context = DataContext.createDataContext();
>         SelectQuery q = new SelectQuery(Mocauser.class);
>         List list = context.performQuery(q);
>         System.out.println(list.size());
>     }
>
>  When I run this code in Eclipse, I get this Exception stack:
>  Exception in thread "main" org.apache.cayenne.CayenneRuntimeException:
>  [v.2.0.4 October 8 2007] No DataMap found, can't route query
>  org.apache.cayenne.query.SelectQuery@43462851[root=class
>  com.mocasystems.apui.db.Mocauser,name=<null>]
>     at org.apache.cayenne.query.AbstractQuery.route(AbstractQuery.java:137)
>     at org.apache.cayenne.query.SelectQuery.route(SelectQuery.java:171)
>     at
>  org.apache.cayenne.access.DataDomainQueryAction.runQuery(DataDomainQueryAction.java:292)
>     at
>  org.apache.cayenne.access.DataDomainQueryAction.access$000(DataDomainQueryAction.java:60)
>     at
>  org.apache.cayenne.access.DataDomainQueryAction$1.transform(DataDomainQueryAction.java:273)
>     at
>  org.apache.cayenne.access.DataDomain.runInTransaction(DataDomain.java:836)
>     at
>  org.apache.cayenne.access.DataDomainQueryAction.runQueryInTransaction(DataDomainQueryAction.java:270)
>     at
>  org.apache.cayenne.access.DataDomainQueryAction.execute(DataDomainQueryAction.java:110)
>     at org.apache.cayenne.access.DataDomain.onQuery(DataDomain.java:746)
>     at
>  org.apache.cayenne.util.ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java:217)
>     at
>  org.apache.cayenne.access.DataContextQueryAction.execute(DataContextQueryAction.java:54)
>     at org.apache.cayenne.access.DataContext.onQuery(DataContext.java:1395)
>     at
>  org.apache.cayenne.access.DataContext.performQuery(DataContext.java:1384)
>     at com.mocasystems.apui.Main.main(Main.java:19)
>
>  My two XML files, currently named cayenne.xml and UntitledMap.map.xml
>  are in a config directory which I have listed in Eclipse as a source
>  directory.  This means that the cayenne.xml file, at least, can be
>  found, because it is on the classpath.
>
>  I have verified that the name of the map file is accurately listed in
>  cayenne.xml.
>  <domains project-version="2.0">
>   <domain name="UntitledDomain">
>     <map name="UntitledMap" location="UntitledMap.map.xml"/>
>   </domain>
>  </domains>
>
>  Can anyone give me some help about how the map file is supposed to be
>  found, and what might cause my problem in finding the map file?
>
>  Thanks,
>
>  Mary-Anne
>
>

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