Thanks for looking in to it. I am using a raw SQL query until I get it
all figured out.
Ted
Mike Kienenberger wrote:
As far as I can tell, it looks ok to me. I've never used the XML
encoder, but if it were a SelectQuery qualifier, I'd expect it to
work.
On 3/3/08, Ted Moens <[EMAIL PROTECTED]> wrote:
Hi Mike:
Thanks and I understand the need for details. The relationship is a
simple one. A "Game" belongs to a "Grouping" and there are many games
in a grouping. My model is full of similar relationships.
When I use the XML encoder to dump all the games in a grouping to the
client, there is no problem. Or, when I use the XML encoder to show
attributes of the grouping associated with a particular game, it also
works fine.
Here are two expressions I use in the code the first is based on a test
against a simple attribute:
expressionList.add(ExpressionFactory.matchExp("gameState", new
ExpressionParameter("gameState")));
No problem, queries work. Here is the one for comparing to a Game's
Grouping's name:
expressionList.add(ExpressionFactory.matchExp("toGrouping.groupingName",
new ExpressionParameter("groupingId")));
This is where I get the runtime error:
Can't resolve path component: [Grouping.groupingName]
Here is the data model for my "Game" class minus a lot of noise
attributes...
---------------- db part ---------------------
<db-entity name="game" catalog="ultiscore">
sMandatory="true" length="10"/>
<db-attribute name="gameState" type="CHAR" isMandatory="true"
length="11"/>
<db-attribute name="groupingId" type="INTEGER"
isMandatory="true"
length="10"/>
</db-entity>
-------------------- db relationship part ------------------
<db-relationship name="toGrouping" source="game" target="grouping"
toMany="false">
<db-attribute-pair source="groupingId" target="groupingId"/>
</db-relationship>
------------------ object part --------------------
<obj-entity name="Game" className="org.tsw.ultiserver.Game"
dbEntityName="game">
<obj-attribute name="gameState" type="java.lang.String"
db-attribute-path="gameState"/>
</obj-entity>
------------------ object relationship part --------------------
<obj-relationship name="toGrouping" source="Game" target="Grouping"
db-relationship-path="toGrouping"/>
And here is the Grouping Class again minus the junk:
--------------------------------------
<db-entity name="grouping" catalog="ultiscore">
<db-attribute name="groupingName" type="VARCHAR"
isMandatory="true"
length="50"/>
</db-entity>
--------------------------------------
<db-relationship name="gameArray" source="grouping" target="game"
toMany="true">
<db-attribute-pair source="groupingId" target="groupingId"/>
</db-relationship>
--------------------------------------
<obj-entity name="Grouping" className="org.tsw.ultiserver.Grouping"
dbEntityName="grouping">
<obj-attribute name="groupingName" type="java.lang.String"
db-attribute-path="groupingName"/>
</obj-entity>
--------------------------------------
<obj-relationship name="gameArray" source="Grouping" target="Game"
db-relationship-path="gameArray"/>
============================
Ted
Mike Kienenberger wrote:
> The first thing I would check is to verify that you have an
> ObjRelationship named "Artist" from your root entity. Note that the
> name is "toArtist" in the analogous code.
>
> It's somewhat difficult to comment on the cause of a concrete error
> given only theoretical environment information :-)
>
> The relevant sections of your DataMap + the actual code would be helpful.
>
> On 3/3/08, Ted Moens <[EMAIL PROTECTED]> wrote:
>> Greetings:
>>
>> I am trying to do a parameterized select query. My situation is
>> directly analogous to the example:
>>
>> list.add(ExpressionFactory.matchExp("paintingTitle",
>> new ExpressionParameter("pname")));
>> list.add(ExpressionFactory.matchExp("toArtist.artistName",
>> new ExpressionParameter("aname")));
>>
>> I follow this pattern but I run into troubles with when the first
>> argument to the matchExp is an attribute of an object other than the
>> target class itself. So in the above example, the first expression
>> works fine but the second would fail with the following:
>>
>> Can't resolve path component: [Artist.artistName])
>>
>> I've very carefully checked that in other situations the attribute
>> analogous to Artist.artistName is in fact accessible.
>>
>> Is there a common error made in these situations?
>>
>> Thanks in advance for any help.
>>
>> Ted
>>
>> FYI...
>>
>>
>> at org.apache.cayenne.map.Entity$PathIterator.next(Entity.java:375)
>> at
>>
org.apache.cayenne.access.trans.QueryAssemblerHelper.appendObjPath(QueryAssemblerHelper.java:90)
>> at
>>
org.apache.cayenne.access.trans.QualifierTranslator.objectNode(QualifierTranslator.java:338)
>> at org.apache.cayenne.exp.Expression.traverse(Expression.java:455)
>> at org.apache.cayenne.exp.Expression.traverse(Expression.java:452)
>> at org.apache.cayenne.exp.Expression.traverse(Expression.java:432)
>> at
>>
org.apache.cayenne.access.trans.QualifierTranslator.doTranslation(QualifierTranslator.java:74)
>> at
>>
org.apache.cayenne.access.trans.SelectTranslator.createSqlString(SelectTranslator.java:123)
>> at
>>
org.apache.cayenne.dba.mysql.MySQLSelectTranslator.createSqlString(MySQLSelectTranslator.java:31)
>> at
>>
org.apache.cayenne.access.trans.QueryAssembler.createStatement(QueryAssembler.java:95)
>> at
>>
org.apache.cayenne.access.jdbc.SelectAction.performAction(SelectAction.java:71)
>> at
>>
org.apache.cayenne.access.DataNodeQueryAction.runQuery(DataNodeQueryAction.java:57)
>> at
org.apache.cayenne.access.DataNode.performQueries(DataNode.java:236)
>> at
>>
org.apache.cayenne.access.DataDomainQueryAction.runQuery(DataDomainQueryAction.java:446)
>> at
>>
org.apache.cayenne.access.DataDomainQueryAction.access$000(DataDomainQueryAction.java:67)
>> at
>>
org.apache.cayenne.access.DataDomainQueryAction$2.transform(DataDomainQueryAction.java:418)
>> at
>> org.apache.cayenne.access.DataDomain.runInTransaction(DataDomain.java:853)
>> at
>>
org.apache.cayenne.access.DataDomainQueryAction.runQueryInTransaction(DataDomainQueryAction.java:415)
>> at
>>
org.apache.cayenne.access.DataDomainQueryAction.execute(DataDomainQueryAction.java:119)
>> at org.apache.cayenne.access.DataDomain.onQuery(DataDomain.java:746)
>> at
>>
org.apache.cayenne.util.ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java:282)
>> at
>>
org.apache.cayenne.access.DataContextQueryAction.execute(DataContextQueryAction.java:59)
>> at
org.apache.cayenne.access.DataContext.onQuery(DataContext.java:1323)
>> at
>> org.apache.cayenne.access.DataContext.performQuery(DataContext.java:1312)
>> at org.tsw.ultiserver.getXMLData.processRequest(getXMLData.java:138)
>> at org.tsw.ultiserver.getXMLData.doGet(getXMLData.java:159)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>> at
>>
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
>> at
>>
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
>> at
>>
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
>> at
>>
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
>> at
>>
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
>> at
>>
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
>> at
>>
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
>> at
>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
>> at
>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
>> at
>>
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
>> at
>>
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
>> at
>>
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
>> at
>>
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
>> at java.lang.Thread.run(Unknown Source)
>>
>>
>
>
