In 1.8, if too much data is entered in a doc's ?editor=object fieldXWiki.JavaScriptExtension[] (say a big chunk of JSON on the order of 97783 bytes) you can no longer save without getting an underlying error. This appears related to the following: com.xpn.xwiki.objects.LargeStringProperty --> com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'XWL_VALUE' at row 1 How can this be changed to allow for a larger limit on entries? Fortunately, http://nielsmayer.com/xwiki/bin/view/Exhibit/Presidents3 ( src <http://nielsmayer.com/xwiki/bin/download/Exhibit/Presidents3/Exhibit.Presidents3.xar>) has entries small enough, but as you grow the amount of Javascript data you hold in a XWiki.JavaScriptExtension you eventually get a failure like this: A problem occured while trying to process your request. Please contact the

webmaster if this happens again.

Detailed information:

Error number 3201 in 3: Exception while saving document Exhibit.pods Wrapped Exception: could not update: [com.xpn.xwiki.objects.LargeStringProperty#component[id,name]{id=-2025184002, name=code}] com.xpn.xwiki.XWikiException: Error number 3201 in 3: Exception while saving document Exhibit.pods Wrapped Exception: could not update: [com.xpn.xwiki.objects.LargeStringProperty#component[id,name]{id=-2025184002, name=code}] at com.xpn.xwiki.store.XWikiHibernateStore.saveXWikiDoc(XWikiHibernateStore.java:595) at com.xpn.xwiki.store.XWikiCacheStore.saveXWikiDoc(XWikiCacheStore.java:135) at com.xpn.xwiki.store.XWikiCacheStore.saveXWikiDoc(XWikiCacheStore.java:128) at com.xpn.xwiki.XWiki.saveDocument(XWiki.java:1282) at com.xpn.xwiki.web.SaveAction.save(SaveAction.java:176) at com.xpn.xwiki.web.SaveAndContinueAction.action(SaveAndContinueAction.java:64) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:215) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:115) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)

...

Wrapped Exception:

com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'XWL_VALUE' at row 1 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2983) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723) at com.mysql.jdbc.Connection.execSQL(Connection.java:3256) at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1313) at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1585) at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1500) at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1485) at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:101) at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:101) at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2412) at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2312) at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2612) at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:96) at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:263) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:168) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000) at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338) at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106) at com.xpn.xwiki.store.XWikiHibernateBaseStore.endTransaction(XWikiHibernateBaseStore.java:866) at com.xpn.xwiki.store.XWikiHibernateBaseStore.endTransaction(XWikiHibernateBaseStore.java:837) at com.xpn.xwiki.store.XWikiHibernateStore.saveXWikiDoc(XWikiHibernateStore.java:585) at com.xpn.xwiki.store.XWikiCacheStore.saveXWikiDoc(XWikiCacheStore.java:135) at com.xpn.xwiki.store.XWikiCacheStore.saveXWikiDoc(XWikiCacheStore.java:128) at com.xpn.xwiki.XWiki.saveDocument(XWiki.java:1282) at com.xpn.xwiki.web.SaveAction.save(SaveAction.java:176) at com.xpn.xwiki.web.SaveAndContinueAction.action(SaveAndContinueAction.java:64)

Thanks. Niels http://nielsmayer.com