<style>
/* Changing the layout to use less space for mobiles */
@media screen and (max-device-width: 480px), screen and (-webkit-min-device-pixel-ratio: 2) {
#email-body { min-width: 30em !important; }
#email-page { padding: 8px !important; }
#email-banner { padding: 8px 8px 0 8px !important; }
#email-avatar { margin: 1px 8px 8px 0 !important; padding: 0 !important; }
#email-fields { padding: 0 8px 8px 8px !important; }
#email-gutter { width: 0 !important; }
}
</style>
<div id="email-body">
<table id="email-wrap" align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#f0f0f0;color:#000000;width:100%;">
<tr valign="top">
<td id="email-page" style="padding:16px !important;">
<table align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#ffffff;border:1px solid #bbbbbb;color:#000000;width:100%;">
<tr valign="top">
<td bgcolor="#3e4c4e" style="background-color:#3e4c4e;color:#ffffff;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;line-height:1;"><img src="https://www.jboss.org/dms/hibernate/images/jira/jiraheader_hibernate.png" alt="" style="vertical-align:top;" /></td>
</tr><tr valign="top">
<td id="email-banner" style="padding:32px 32px 0 32px;">
<table align="left" border="0" cellpadding="0" cellspacing="0" width="100%" style="width:100%;">
<tr valign="top">
<td style="color:#505050;font-family:Arial,FreeSans,Helvetica,sans-serif;padding:0;">
<img id="email-avatar" src="https://hibernate.onjira.com/secure/useravatar?avatarId=10162" alt="" height="48" width="48" border="0" align="left" style="padding:0;margin: 0 16px 16px 0;" />
<div id="email-action" style="padding: 0 0 8px 0;font-size:12px;line-height:18px;">
<a class="user-hover" rel="yujianok" id="email_yujianok" href="https://hibernate.onjira.com/secure/ViewProfile.jspa?name=yujianok" style="color:#6c797f;">yujian</a>
created <img src="https://hibernate.onjira.com/images/icons/bug.gif" height="16" width="16" border="0" align="absmiddle" alt="Bug"> <a style='color:#6c797f;text-decoration:none;' href='https://hibernate.onjira.com/browse/HHH-7389'>HHH-7389</a>
</div>
<div id="email-summary" style="font-size:16px;line-height:20px;padding:2px 0 16px 0;">
<a style='color:#6c797f;text-decoration:none;' href='https://hibernate.onjira.com/browse/HHH-7389'><strong>NullPointerException when use multi-tenancy and TableGenerator</strong></a>
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<td id="email-fields" style="padding:0 32px 32px 32px;">
<table border="0" cellpadding="0" cellspacing="0" style="padding:0;text-align:left;width:100%;" width="100%">
<tr valign="top">
<td id="email-gutter" style="width:64px;white-space:nowrap;"></td>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 10px 10px 0;white-space:nowrap;">
<strong style="font-weight:normal;color:#505050;">Issue Type:</strong>
</td>
<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
<img src="https://hibernate.onjira.com/images/icons/bug.gif" height="16" width="16" border="0" align="absmiddle" alt="Bug"> Bug
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 10px 10px 0;white-space:nowrap;">
<strong style="font-weight:normal;color:#505050;">Affects Versions:</strong>
</td>
<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
4.1.3 </td>
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<strong style="font-weight:normal;color:#505050;">Assignee:</strong>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
Unassigned </td>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 10px 10px 0;white-space:nowrap;">
<strong style="font-weight:normal;color:#505050;">Components:</strong>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
core </td>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 10px 10px 0;white-space:nowrap;">
<strong style="font-weight:normal;color:#505050;">Created:</strong>
</td>
<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
13/Jun/12 8:58 PM
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<strong style="font-weight:normal;color:#505050;">Description:</strong>
</td>
<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
<p style='margin-top:0;margin-bottom:10px;'>Im using schema based multi-tenancy and entity id generation strategy is TABLE.When I save a new entity into database, NullPointerException occur.</p>
<p style='margin-top:0;margin-bottom:10px;'>java.lang.NullPointerException<br/>
at org.hibernate.engine.transaction.internal.jdbc.JdbcIsolationDelegate.delegateWork(JdbcIsolationDelegate.java:68)<br/>
at org.hibernate.id.TableGenerator.generateHolder(TableGenerator.java:148)<br/>
at org.hibernate.id.TableHiLoGenerator$1.getNextValue(TableHiLoGenerator.java:84)<br/>
at org.hibernate.id.enhanced.OptimizerFactory$LegacyHiLoAlgorithmOptimizer.generate(OptimizerFactory.java:393)<br/>
at org.hibernate.id.TableHiLoGenerator.generate(TableHiLoGenerator.java:81)<br/>
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:118)<br/>
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:204)<br/>
at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)<br/>
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:189)<br/>
at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)<br/>
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)<br/>
at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:757)<br/>
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:749)<br/>
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:745)</p>
<p style='margin-top:0;margin-bottom:10px;'>Then I dig into hibernate source code, and find that:<br/>
When hibernate's MultiTenancyStrategy is not NONE, JdbcServicesImpl.connectionProvider will must be null.And when id generation strategy is table, hibernate will use hilo algorithm to generate id, and use JdbcIsolationDelegate.delegateWork do this work.But dJdbcIsolationDelegate.delegateWork get connection from JdbcServicesImpl.connectionProvider, then NullPointerException occur.</p>
<p style='margin-top:0;margin-bottom:10px;'>hibernate's source code:</p>
<p style='margin-top:0;margin-bottom:10px;'>public class JdbcServicesImpl implements ... {</p>
<p style='margin-top:0;margin-bottom:10px;'>...<br/>
private JdbcConnectionAccess buildJdbcConnectionAccess(Map configValues) {<br/>
final MultiTenancyStrategy multiTenancyStrategy = MultiTenancyStrategy.determineMultiTenancyStrategy( configValues );</p>
<p style='margin-top:0;margin-bottom:10px;'> if ( MultiTenancyStrategy.NONE == multiTenancyStrategy ) {
connectionProvider = serviceRegistry.getService( ConnectionProvider.class );
return new ConnectionProviderJdbcConnectionAccess( connectionProvider );
}<br/>
else {
connectionProvider = null;
final MultiTenantConnectionProvider multiTenantConnectionProvider = serviceRegistry.getService( MultiTenantConnectionProvider.class );
return new MultiTenantConnectionProviderJdbcConnectionAccess( multiTenantConnectionProvider );
}<br/>
}<br/>
...<br/>
}</p>
<p style='margin-top:0;margin-bottom:10px;'>public class JdbcIsolationDelegate implements IsolationDelegate {<br/>
public <T> T delegateWork(WorkExecutorVisitable<T> work, boolean transacted) throws HibernateException {<br/>
boolean wasAutoCommit = false;<br/>
try {
// todo : should we use a connection proxy here?
Connection connection = connectionProvider().getConnection();
....
}</p>
</td>
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<tr valign="top">
<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 10px 10px 0;white-space:nowrap;">
<strong style="font-weight:normal;color:#505050;">Environment:</strong>
</td>
<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
Hibernate 4.1.3, using JPA annotations
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 10px 10px 0;white-space:nowrap;">
<strong style="font-weight:normal;color:#505050;">Project:</strong>
</td>
<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
<a style="color:#6c797f;" href="https://hibernate.onjira.com/browse/HHH">Hibernate ORM</a>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 10px 10px 0;white-space:nowrap;">
<strong style="font-weight:normal;color:#505050;">Priority:</strong>
</td>
<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
<img src="https://hibernate.onjira.com/images/icons/priority_major.gif" height="16" width="16" border="0" align="absmiddle" alt="Major"> Major
</td>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 10px 10px 0;white-space:nowrap;">
<strong style="font-weight:normal;color:#505050;">Reporter:</strong>
</td>
<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
<a class="user-hover" rel="yujianok" id="email_yujianok" href="https://hibernate.onjira.com/secure/ViewProfile.jspa?name=yujianok" style="color:#6c797f;">yujian</a>
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</table>
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</table>
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</table>
</td><!-- End #email-page -->
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</table><!-- End #email-wrap -->
</div><!-- End #email-body -->