Hi, Just so you don't think you're being ignored - what you are doing looks correct to me.
I'm afraid I don't know why you are getting that exception, and I'm sorry but I've not currently got any time to look in any detail; hopefully Armin or someone will be able to look closer... Cheers, Charles. -----Original Message----- From: Cornillon Cecile [mailto:[EMAIL PROTECTED] Sent: 20 July 2005 15:52 To: OJB users List Subject: Joins on several tables (at least 3) Hello, I am just starting with OJB, and I haven't found the answer to the following question in neither the archives neither the tutorials... (there was a pretty similar question back in February 2005 ( "Using join-queries to build up (complex) object trees") but I have not found an answer in the archives ....) Basically what I am trying to achieve is the following : SELECT Domain.IDDOM FROM Context, Fonction, Domain WHERE Context.IDCTXT=266353 AND Context.IDFONCTION=Fonction.IDFONCTION AND Fonction.IDDOM=Domain.IDDOM with the following 3 tables : Domain : idDom (primary key) codeDom libDom .... Fonction : idFonction (primary key) codeFonction libFonction idDom (foreign key to table Domain) ... Context : idCtxt (primary key) idFonction (foreign key to table Fonction) ... One domain can be linked to several fonctions (1:n) One fonction can be linked to several contexts (1:n) I want to get the domain associated to one specific context, via the foreign keys. My Java method is the following : PersistenceBroker broker = null; Criteria crit = new Criteria(); crit.addEqualTo("listeFonctions.listeContextes.idCtxt", new Integer(idCtxt)); QueryByCriteria query = new QueryByCriteria(Domain.class, crit); log.debug("query.toString() = " + query.toString()); broker = PersistenceBrokerFactory.defaultPersistenceBroker(); Collection domaines = broker.getCollectionByQuery(query); I get java.lang.ArrayIndexOutOfBoundsException: 1 at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement$Join.appendJoinEqual ities(SqlQueryStatement.java:2055) Am I using the right request ? ("listeFonctions.listeContextes.idCtxt" ?) For information, my repository is the following : <!-- TABLE FONCTION --> <class-descriptor class="com.inetpsa.infotec.sht.dtb.Fonction" table="FONCTION"> <field-descriptor id="1" name="idFonction" column="idFonction" jdbc-type="INTEGER" nullable="false" primarykey="true" /> <field-descriptor id="2" name="ordreFonction" column="ordreFonction" jdbc-type="INTEGER" /> <field-descriptor id="3" name="codeFonction" column="codeFonction" jdbc-type="VARCHAR" /> <field-descriptor id="4" name="libFonction" column="libFonction" jdbc-type="VARCHAR" /> <field-descriptor id="5" name="thFonction" column="thFonction" jdbc-type="VARCHAR" /> <field-descriptor id="6" name="idDom" column="idDom" jdbc-type="INTEGER" nullable="false" indexed="true" primarykey="true" /> <collection-descriptor name="listeContextes" element-class-ref="com.inetpsa.infotec.sht.dtb.Context" proxy="false" auto-retrieve="true" auto-delete="false" auto-update="false" > <inverse-foreignkey field-ref="idFonction"/> </collection-descriptor> </class-descriptor> <!-- TABLE DOMAIN --> <class-descriptor class="com.inetpsa.infotec.sht.dtb.Domain" table="DOMAIN"> <field-descriptor id="1" name="idDom" column="idDom" jdbc-type="INTEGER" nullable="false" primarykey="true" /> <field-descriptor id="2" name="codeDom" column="codeDom" jdbc-type="VARCHAR" /> <field-descriptor id="3" name="libDom" column="libDom" jdbc-type="VARCHAR" /> <field-descriptor id="4" name="thDom" column="thDom" jdbc-type="VARCHAR" /> <collection-descriptor name="listeFonctions" element-class-ref="com.inetpsa.infotec.sht.dtb.Fonction" proxy="false" auto-retrieve="true" auto-delete="false" auto-update="false" > <inverse-foreignkey field-ref="idDom"/> </collection-descriptor> </class-descriptor> <!-- TABLE CONTEXT --> <class-descriptor class="com.inetpsa.infotec.sht.dtb.Context" table="CONTEXT" > <field-descriptor id="1" name="idCtxt" column="idCtxt" jdbc-type="INTEGER" nullable="false" primarykey="true" /> <field-descriptor id="2" name="idFonction" column="idFonction" jdbc-type="INTEGER" nullable="false" indexed="true" primarykey="true" /> <field-descriptor id="3" name="idDAM" column="idDAM" jdbc-type="INTEGER" nullable="false" indexed="true" primarykey="true" /> <field-descriptor id="4" name="idGrpDescs" column="IdGrpDescs" jdbc-type="INTEGER" nullable="false" indexed="true" primarykey="true" /> </class-descriptor> Thanks a lot for your time and help ... Cécile --------------------------------- Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! Messenger Téléchargez le ici ! ___________________________________________________________ HPD Software Ltd. - Helping Business Finance Business Email terms and conditions: www.hpdsoftware.com/disclaimer --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
