erreur Cayenne null pointeur lors de la tentative de validation

Question

Je cours le code suivant que des erreurs lorsque j'essaie de valider mes modifications en utilisant Cayenne comme mon ORM. Le code est collé ci-dessous et des erreurs sur la ligne context.commitChanges(); Les messages de sortie sont collés sous le code. Toute aide pour comprendre cela serait appréciée.

import org.apache.cayenne.access.DataContext; 
import java.util.*; 

import com.jared.*; 
public class Main { 

    public static void main(String[] args) { 
     DataContext context = DataContext.createDataContext(); 
     Stocks theStock=(Stocks) context.createAndRegisterNewObject(Stocks.class); 
theStock.setAsk(3.4); 
theStock.setAvgdailyvolume(323849); 
theStock .setBid(5.29); 
theStock.setChange(-1.22); 
theStock.setDayhigh(9.21); 
theStock.setDaylow(2.11); 
theStock.setLasttradeprice(5.11); 
theStock.setLasttradesize(3827); 
theStock.setOpen(6.21); 
theStock.setPriorclose(4.21); 
theStock.setShortratio(1.1); 
theStock.setSymbol("^SP%"); 
theStock.setVolume(28193); 
theStock.setLasttradedate(new Date()); 
    context.commitChanges(); 
    System.out.println("Done with the database"); 
    } 
} 

Nov 20, 2008 11:20:37 PM org.apache.cayenne.conf.RuntimeLoadDelegate startedLoading 
INFO: started configuration loading. 
Nov 20, 2008 11:20:37 PM org.apache.cayenne.conf.RuntimeLoadDelegate shouldLoadDataDomain 
INFO: loaded domain: stocks 
Nov 20, 2008 11:20:37 PM org.apache.cayenne.conf.RuntimeLoadDelegate loadDataMap 
INFO: loaded . 
Nov 20, 2008 11:20:37 PM org.apache.cayenne.conf.RuntimeLoadDelegate shouldLoadDataNode 
INFO: loading . 
Nov 20, 2008 11:20:37 PM org.apache.cayenne.conf.RuntimeLoadDelegate shouldLoadDataNode 
INFO: using factory: org.apache.cayenne.conf.DriverDataSourceFactory 
Nov 20, 2008 11:20:37 PM org.apache.cayenne.conf.DriverDataSourceFactory load 
INFO: loading driver information from 'stocksNode.driver.xml'. 
Nov 20, 2008 11:20:37 PM org.apache.cayenne.conf.DriverDataSourceFactory$DriverHandler init 
INFO: loading driver org.hsqldb.jdbcDriver 
Nov 20, 2008 11:20:37 PM org.apache.cayenne.conf.DriverDataSourceFactory$LoginHandler init 
INFO: loading user name and password. 
Nov 20, 2008 11:20:37 PM org.apache.cayenne.access.QueryLogger logPoolCreated 
INFO: Created connection pool: jdbc:hsqldb:file:/hsqldb/data/stocks 
    Driver class: org.hsqldb.jdbcDriver 
    Min. connections in the pool: 1 
    Max. connections in the pool: 1 
Nov 20, 2008 11:20:37 PM org.apache.cayenne.conf.RuntimeLoadDelegate shouldLoadDataNode 
INFO: loaded datasource. 
Nov 20, 2008 11:20:37 PM org.apache.cayenne.conf.RuntimeLoadDelegate initAdapter 
INFO: no adapter set, using automatic adapter. 
Nov 20, 2008 11:20:37 PM org.apache.cayenne.conf.RuntimeLoadDelegate finishedLoading 
INFO: finished configuration loading in 203 ms. 
Exception in thread "main" org.apache.cayenne.CayenneRuntimeException: [v.3.0M4 May 18 2008 16:32:02] Commit Exception 
    at org.apache.cayenne.access.DataContext.flushToParent(DataContext.java:1192) 
    at org.apache.cayenne.access.DataContext.commitChanges(DataContext.java:1066) 
    at Main.main(Main.java:24) 
Caused by: java.lang.NullPointerException 
    at org.apache.cayenne.access.DataDomainInsertBucket.createPermIds(DataDomainInsertBucket.java:101) 
    at org.apache.cayenne.access.DataDomainInsertBucket.appendQueriesInternal(DataDomainInsertBucket.java:76) 
    at org.apache.cayenne.access.DataDomainSyncBucket.appendQueries(DataDomainSyncBucket.java:80) 
    at org.apache.cayenne.access.DataDomainFlushAction.preprocess(DataDomainFlushAction.java:183) 
    at org.apache.cayenne.access.DataDomainFlushAction.flush(DataDomainFlushAction.java:135) 
    at org.apache.cayenne.access.DataDomain.onSyncFlush(DataDomain.java:821) 
    at org.apache.cayenne.access.DataDomain$2.transform(DataDomain.java:788) 
    at org.apache.cayenne.access.DataDomain.runInTransaction(DataDomain.java:847) 
    at org.apache.cayenne.access.DataDomain.onSync(DataDomain.java:785) 
    at org.apache.cayenne.access.DataContext.flushToParent(DataContext.java:1164) 
    ... 2 more 

Answer 1

nom d'utilisateur, mot de passe?

connexion ClientConnection = new HessianConnection ("http://localhost:8080/cayenne-service" "cayenne-utilisateur", "secret",
null);