带有SQLite的数据核JDO

问题描述

| 对于我们应用程序中的JUnit测试，我正在尝试初始化datanucleus以使用sqlite数据库。但是，当我尝试获取

PersistenceManager

时，它在尝试创建fails1 fails表时会失败（我不完全知道为什么还需要此表）。 由于某些标识符长度问题，它在truncate（）期间似乎失败。我试图调整各种数据核的各种配置属性都无济于事。 谁能向我解释为什么datanucleus觉得有必要创建这些“ 2”表，以及什么可能导致sqlite（org.sqlite.JDBC）数据库而不是MysqL导致这种截断失败？ 日志：

Apr 12,2011 1:30:16 PM org.datanucleus.store.rdbms.table.AbstractTable create
INFO: Creating table DELETEME1302640216142
Apr 12,2011 1:32:10 PM org.datanucleus.store.rdbms.RDBMsstoreManager <init>
SEVERE: Failed initialising database. Please check that your database JDBC driver is accessible,and the database URL and username/password are correct. Exception : The length argument (=-3) is less than HASH_LENGTH(=4)!
java.lang.IllegalArgumentException: The length argument (=-3) is less than HASH_LENGTH(=4)!

完整堆栈跟踪：

java.lang.IllegalArgumentException: The length argument (=-3) is less than HASH_LENGTH(=4)!
    at org.datanucleus.store.mapped.identifier.AbstractIdentifierFactory.truncate(AbstractIdentifierFactory.java:314)
    at org.datanucleus.store.mapped.identifier.AbstractIdentifierFactory.newPrimaryKeyIdentifier(AbstractIdentifierFactory.java:661)
    at org.datanucleus.store.rdbms.key.PrimaryKey.<init>(PrimaryKey.java:37)
    at org.datanucleus.store.rdbms.table.TableImpl.getPrimaryKey(TableImpl.java:128)
    at org.datanucleus.store.rdbms.table.TableImpl.getsqlCreateStatements(TableImpl.java:1264)
    at org.datanucleus.store.rdbms.table.AbstractTable.create(AbstractTable.java:419)
    at org.datanucleus.store.rdbms.RDBMsstoreManager.initialiseSchema(RDBMsstoreManager.java:676)
    at org.datanucleus.store.rdbms.RDBMsstoreManager.<init>(RDBMsstoreManager.java:350)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at org.datanucleus.plugin.NonManagedpluginRegistry.createExecutableExtension(NonManagedpluginRegistry.java:597)
    at org.datanucleus.plugin.PluginManager.createExecutableExtension(PluginManager.java:300)
    at org.datanucleus.ObjectManagerFactoryImpl.initialiseStoreManager(ObjectManagerFactoryImpl.java:227)
    at org.datanucleus.jdo.JDOPersistenceManagerFactory.freezeConfiguration(JDOPersistenceManagerFactory.java:591)
    at org.datanucleus.jdo.JDOPersistenceManagerFactory.createPersistenceManagerFactory(JDOPersistenceManagerFactory.java:293)
    at org.datanucleus.jdo.JDOPersistenceManagerFactory.getPersistenceManagerFactory(JDOPersistenceManagerFactory.java:189)
    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 javax.jdo.JDOHelper$16.run(JDOHelper.java:1965)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.jdo.JDOHelper.invoke(JDOHelper.java:1960)
    at javax.jdo.JDOHelper.invokeGetPersistenceManagerFactoryOnImplementation(JDOHelper.java:1166)
    at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:808)
    at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:701)

    

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