Hello,
I'm working on an java swing application, using ROP (configuration is:
Tomcat 6, Cayenne 2.0.4 with mysql).
Since now everything worked perfectly, the swing application ( and all
javabeans, that i created) works as expected.
When i started plugging more that one client to the ORM, i start having some
problems with caching, more precisely
considering the following entity:
<obj-entity name="GcUtenti" className="entities.GcUtenti"
clientClassName="Client.GcUtenti" dbEntityName="GC_UTENTI">
<obj-attribute name="gcConsulten" type="java.lang.Boolean"
db-attribute-path="GC_CONSULTEN"/>
<obj-attribute name="gcCostoRisorsa" type="java.lang.Double"
db-attribute-path="GC_COSTO_RISORSA"/>
<obj-attribute name="gcEmail" type="java.lang.String"
db-attribute-path="GC_EMAIL"/>
<obj-attribute name="gcFax" type="java.lang.String"
db-attribute-path="GC_FAX"/>
<obj-attribute name="gcFornadmin" type="java.lang.Boolean"
db-attribute-path="GC_FORNADMIN"/>
<obj-attribute name="gcIsadmin" type="java.lang.Boolean"
db-attribute-path="GC_ISADMIN"/>
<obj-attribute name="gcMob" type="java.lang.String"
db-attribute-path="GC_MOB"/>
<obj-attribute name="gcNome" type="java.lang.String"
db-attribute-path="GC_NOME"/>
<obj-attribute name="gcPassword" type="java.lang.String"
db-attribute-path="GC_PASSWORD"/>
<obj-attribute name="gcTel" type="java.lang.String"
db-attribute-path="GC_TEL"/>
<obj-attribute name="gcUsername" type="java.lang.String"
db-attribute-path="GC_USERNAME"/>
</obj-entity>
with the follwing relationships
<db-relationship name="commesseAssegnateEst" source="GC_UTENTI"
target="COMMESSE" toMany="true">
<db-attribute-pair source="GC_PK" target="GCCOM_RES_EST_FK"/>
</db-relationship>
<db-relationship name="commesseReposabileDi" source="GC_UTENTI"
target="COMMESSE" toMany="true">
<db-attribute-pair source="GC_PK" target="GCCOM_RES_INT_FK"/>
</db-relationship>
<db-relationship name="gcOreAccettate" source="GC_UTENTI" target="GC_ORE"
toMany="true">
<db-attribute-pair source="GC_PK" target="GCO_ACC_USER_FK"/>
</db-relationship>
<db-relationship name="gcOreLavorate" source="GC_UTENTI" target="GC_ORE"
toMany="true">
<db-attribute-pair source="GC_PK" target="GCO_RISORSA_FK"/>
</db-relationship>
<db-relationship name="gcOreVerificateEst" source="GC_UTENTI"
target="GC_ORE" toMany="true">
<db-attribute-pair source="GC_PK" target="GCO_VER_USER_FK"/>
</db-relationship>
<db-relationship name="toGcForn" source="GC_UTENTI" target="GC_FORN"
toMany="false">
<db-attribute-pair source="GC_FORN_FK" target="GCF_PK"/>
</db-relationship>
<db-relationship name="toScaglioni" source="GC_UTENTI" target="SCAGLIONI"
toMany="false">
<db-attribute-pair source="GC_SCA_FK" target="SCA_PK"/>
</db-relationship>
<db-relationship name="toTipOper" source="GC_UTENTI" target="TIP_OPER"
toMany="false">
<db-attribute-pair source="GC_TIPOP_FK" target="TIO_PK"/>
</db-relationship>
if a client alter and commpit one relation, for example "toGcForn", the
other client isn't unware of that change, by otherway changing gcNome the other
clients get aware.
Currently im not using any kind of Shared_session, its that dued by this
fact?
Btw i tried to configure XMPP for managing shadred_session. I saw that ther
are other options like JGroups, but there no kind of documentation about usign
them with Cayenne.
I configured openfire 3.6.4 and i added on both java client and to
webapplication XMPP clients (smack-2.2.1.jar and smackx-2.2.1.jar), and
configured the XMPP servlet on the web.xml:
<init-param>
<param-name>cayenne.RemoteService.EventBridge.factory</param-name>
<param-value>org.apache.cayenne.event.XMPPBridgeFactory</param-value>
</init-param>
<init-param>
<param-name>cayenne.XMPPBridge.xmppHost</param-name>
<param-value>127.0.0.1</param-value>
</init-param>
<init-param>
<param-name>cayenne.XMPPBridge.xmppPort</param-name>
<param-value>5222</param-value>
</init-param>
<init-param>
<param-name>cayenne.XMPPBridge.xmppChatService</param-name>
<param-value>conference</param-value>
</init-param>
After doing that cayenne starts throwing exceptions on server side
org.apache.cayenne.CayenneRuntimeException: [v.2.0.4 October 8 2007] Error
starting EventBridge org.apache.cayenne.event.xmppbri...@f6438d
at
org.apache.cayenne.remote.ClientChannel.setupRemoteChannelListener(ClientChannel.java:228)
at org.apache.cayenne.remote.ClientChannel.<init>(ClientChannel.java:79)
at org.apache.cayenne.remote.ClientChannel.<init>(ClientChannel.java:69)
at org.apache.cayenne.remote.ClientChannel.<init>(ClientChannel.java:65)
at System.Instance.Login(Instance.java:53)
.....................................
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Caused by: org.apache.cayenne.CayenneRuntimeException: [v.2.0.4 October 8 2007]
Error connecting to XMPP ServerXMPPError connecting to 127.0.0.1:5222.
at
org.apache.cayenne.event.XMPPBridge.startupExternal(XMPPBridge.java:180)
at org.apache.cayenne.event.EventBridge.startup(EventBridge.java:275)
at
org.apache.cayenne.remote.ClientChannel.setupRemoteChannelListener(ClientChannel.java:225)
... 38 more
Looking at the error its seems to be caused by the XMPP server not working, but
i checked and it works. Looking with tcpdump i didn't see any incoming packet
while Cayenne tries to connect to it.
Im doing something wrong?
Maybe some tomcat security feature blocking it?
Another question, to enable shared sessions via XMPP, something other that what
i configured must to be done? I mean nothing else (than the parameters in
web.xml) has to be specified to clients?
Thanks in advice,
Emanuele
