To add on,

I am using Oracle 10g R1 and hibernate 3.2.5ga. This problem seem to lie on the hibernate portion where it failed to resolve the alias in the GROUP BY clauses
in WatchSheets.WebHome document.The code causing this problem is as follow:

.....
#set($tagsQuery = "select elements(entry.tags), count(*) from XWiki.FeedEntryClass as entry, XWikiDocument as doc, BaseObject as obj where doc.fullName=obj.name and obj.id=entry.id and doc.web='${doc.space}' group by col_0_0_)
#set($tagList = $xwiki.search($tagsQuery))

How can i resolve this issue or else the watch application could not be used.

Regards,
Colin

----- Original Message ----
From: Colin Tay <lee_hyeok@yahoo.com.sg>
To: XWiki Developers <devs@xwiki.org>
Sent: Wednesday, 13 February 2008 8:55:02
Subject: [xwiki-devs] Problem loading Watch.Reader Application

Hi all,

I am using the Xwiki enterprise 1.2.1 with rev 7495.
After importing the watch application successfully, i opened the http://localhost:8080/xwiki/bin/view/watch/reader url.
An exception occured, may i know what causes this?

The errors are as follows:

Thanks in adv,
Colin

2008-02-13 08:59:33,359 [http://localhost:8080/xwiki/XWikiService] [P1-17] WARN  util.JDBCExceptionReporter      - SQL Error: 932, SQLState: 42000
2008-02-13 08:59:33,359 [http://localhost:8080/xwiki/XWikiService] [P1-17] ERROR util.JDBCExceptionReporter      - ORA-00932: inconsistent datatypes: expected - got CLOB
 
2008-02-13 08:59:33,359 [http://localhost:8080/xwiki/XWikiService] [P1-17] ERROR xwiki.XWiki                     - Unhandled exception on the server
com.xpn.xwiki.XWikiException: Error number 3223 in 3: Exception while searching documents with sql select entry.feedname, sum(1-coalesce(entry.read,0)) from XWiki.FeedEntryClass as entry, XWikiDocument as doc, BaseObject as obj where doc.fullName=obj.name and obj.id=entry.id and doc.web='Watch' group by entry.feedname
Wrapped Exception: could not execute query
    at com.xpn.xwiki.store.XWikiHibernateStore.search(XWikiHibernateStore.java:1809)
    at com.xpn.xwiki.store.XWikiHibernateStore.search(XWikiHibernateStore.java:1746)
    at com.xpn.xwiki.store.XWikiHibernateStore.search(XWikiHibernateStore.java:1735)
    at com.xpn.xwiki.store.XWikiCacheStore.search(XWikiCacheStore.java:420)
    at com.xpn.xwiki.gwt.api.server.XWikiServiceImpl.customQuery(XWikiServiceImpl.java:740)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:281)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:167)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:616)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:428)
    at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:830)
    at com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117)
    at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
    at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:471)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:568)
    at org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
    at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:633)
    at org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
    at org.mortbay.http.HttpServer.service(HttpServer.java:954)
    at org.mortbay.http.HttpConnection.service(HttpConnection.java:816)
    at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:983)
    at org.mortbay.http.HttpConnection.handle(HttpConnection.java:833)
    at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
    at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
    at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)


Wrapped Exception:


java.sql.SQLException: ORA-00932: inconsistent datatypes: expected - got CLOB

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:305)
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:272)
    at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:623)
    at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:181)
    at oracle.jdbc.driver.T4CPreparedStatement.execute_for_describe(T4CPreparedStatement.java:420)
    at oracle.jdbc.driver.OracleStatement.execute_maybe_describe(OracleStatement.java:896)
    at oracle.jdbc.driver.T4CPreparedStatement.execute_maybe_describe(T4CPreparedStatement.java:452)
    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:986)
    at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:2888)
    at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:2929)
    at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:92)
    at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:92)
    at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
    at org.hibernate.loader.Loader.getResultSet(Loader.java:1787)
    at org.hibernate.loader.Loader.doQuery(Loader.java:674)
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
    at org.hibernate.loader.Loader.doList(Loader.java:2220)
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
    at org.hibernate.loader.Loader.list(Loader.java:2099)
    at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378)
    at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
    at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
    at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
    at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
    at com.xpn.xwiki.store.XWikiHibernateStore.search(XWikiHibernateStore.java:1801)
    at com.xpn.xwiki.store.XWikiHibernateStore.search(XWikiHibernateStore.java:1746)
    at com.xpn.xwiki.store.XWikiHibernateStore.search(XWikiHibernateStore.java:1735)
    at com.xpn.xwiki.store.XWikiCacheStore.search(XWikiCacheStore.java:420)
    at com.xpn.xwiki.gwt.api.server.XWikiServiceImpl.customQuery(XWikiServiceImpl.java:740)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:281)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:167)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:616)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:428)
    at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:830)
    at com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117)
    at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
    at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:471)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:568)
    at org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
    at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:633)
    at org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
    at org.mortbay.http.HttpServer.service(HttpServer.java:954)
    at org.mortbay.http.HttpConnection.service(HttpConnection.java:816)
    at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:983)
    at org.mortbay.http.HttpConnection.handle(HttpConnection.java:833)
    at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
    at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
    at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)
2008-02-13 08:59:33,718 [http://localhost:8080/xwiki/XWikiService] [P1-18] WARN  util.JDBCExceptionReporter      - SQL Error: 904, SQLState: 42000
2008-02-13 08:59:33,718 [http://localhost:8080/xwiki/XWikiService] [P1-18] ERROR util.JDBCExceptionReporter      - ORA-00904: "COL_0_0_": invalid identifier
 
2008-02-13 08:59:33,718 [http://localhost:8080/xwiki/XWikiService] [P1-18] ERROR xwiki.XWiki                     - Unhandled exception on the server
com.xpn.xwiki.XWikiException: Error number 3223 in 3: Exception while searching documents with sql select elements(entry.tags), count(*) from XWiki.FeedEntryClass as entry, XWikiDocument as doc, BaseObject as obj where doc.fullName=obj.name and obj.id=entry.id and doc.web='Watch' group by col_0_0_
Wrapped Exception: could not execute query
    at com.xpn.xwiki.store.XWikiHibernateStore.search(XWikiHibernateStore.java:1809)
    at com.xpn.xwiki.store.XWikiHibernateStore.search(XWikiHibernateStore.java:1746)
    at com.xpn.xwiki.store.XWikiHibernateStore.search(XWikiHibernateStore.java:1735)
    at com.xpn.xwiki.store.XWikiCacheStore.search(XWikiCacheStore.java:420)
    at com.xpn.xwiki.gwt.api.server.XWikiServiceImpl.customQuery(XWikiServiceImpl.java:740)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:281)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:167)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:616)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:428)
    at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:830)
    at com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117)
    at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
    at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:471)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:568)
    at org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
    at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:633)
    at org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
    at org.mortbay.http.HttpServer.service(HttpServer.java:954)
    at org.mortbay.http.HttpConnection.service(HttpConnection.java:816)
    at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:983)
    at org.mortbay.http.HttpConnection.handle(HttpConnection.java:833)
    at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
    at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
    at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)


Wrapped Exception:


java.sql.SQLException: ORA-00904: "COL_0_0_": invalid identifier

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:305)
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:272)
    at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:623)
    at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:181)
    at oracle.jdbc.driver.T4CPreparedStatement.execute_for_describe(T4CPreparedStatement.java:420)
    at oracle.jdbc.driver.OracleStatement.execute_maybe_describe(OracleStatement.java:896)
    at oracle.jdbc.driver.T4CPreparedStatement.execute_maybe_describe(T4CPreparedStatement.java:452)
    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:986)
    at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:2888)
    at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:2929)
    at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:92)
    at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:92)
    at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
    at org.hibernate.loader.Loader.getResultSet(Loader.java:1787)
    at org.hibernate.loader.Loader.doQuery(Loader.java:674)
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
    at org.hibernate.loader.Loader.doList(Loader.java:2220)
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
    at org.hibernate.loader.Loader.list(Loader.java:2099)
    at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378)
    at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
    at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
    at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
    at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
    at com.xpn.xwiki.store.XWikiHibernateStore.search(XWikiHibernateStore.java:1801)
    at com.xpn.xwiki.store.XWikiHibernateStore.search(XWikiHibernateStore.java:1746)
    at com.xpn.xwiki.store.XWikiHibernateStore.search(XWikiHibernateStore.java:1735)
    at com.xpn.xwiki.store.XWikiCacheStore.search(XWikiCacheStore.java:420)
    at com.xpn.xwiki.gwt.api.server.XWikiServiceImpl.customQuery(XWikiServiceImpl.java:740)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:281)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:167)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:616)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:428)
    at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:830)
    at com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117)
    at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
    at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:471)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:568)
    at org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
    at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:633)
    at org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
    at org.mortbay.http.HttpServer.service(HttpServer.java:954)
    at org.mortbay.http.HttpConnection.service(HttpConnection.java:816)
    at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:983)
    at org.mortbay.http.HttpConnection.handle(HttpConnection.java:833)
    at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
    at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
    at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)




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