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<p style="margin: 10px 0 0 0">I ran across the same issue. I was storing elements in a cache with a tenantId, but I found out that when evicting those elements the CacheImpl builds a CacheKey without a tenantId, so the hash of the key at evicting will never match the hash of the key that was used at storing.</p>
<p style="margin: 10px 0 0 0">Because I suspect I won't be the only one who struggled with this, here's my way around the issue:</p>
<p style="margin: 10px 0 0 0">I extended CacheImpl with a version that adds the correct tenantId to the CacheKey and because I was building the SessionFactory programatically I was able to replace the right services so that my CacheImpl was used in the SessionFactory.</p>
<p style="margin: 10px 0 0 0">Classes I build:<br /> XXCacheImpl - as described above, builds CacheKey with tenantId<br /> XXCacheServiceInitiator - implements SessionFactoryServiceInitiator<CacheImplementor>, creates XXCacheImpl<br /> XXSessionFactoryServiceRegistryFactory - implements SessionFactoryServiceRegistryFactory, the buildServiceRegistry returns XXSessionFactoryServiceRegistryImpl<br /> XXSessionFactoryServiceRegistryImpl - extends SessionFactoryServiceRegistryImpl but overrides createServiceBinding with the following implementation:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@Override
<span class="code-keyword" style="color: #000091">protected</span> <R <span class="code-keyword" style="color: #000091">extends</span> Service> void createServiceBinding(ServiceInitiator<R> initiator) {
        <span class="code-keyword" style="color: #000091">if</span> (initiator <span class="code-keyword" style="color: #000091">instanceof</span> CacheInitiator) {
                <span class="code-keyword" style="color: #000091">super</span>.createServiceBinding(XXCacheServiceInitiator.INSTANCE);
        } <span class="code-keyword" style="color: #000091">else</span> {
                <span class="code-keyword" style="color: #000091">super</span>.createServiceBinding(initiator);
        }
}
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<p style="margin: 10px 0 0 0">I build the SessionFactory with a SessionFactory builder and a StandardServiceRegistryImpl. To add my own SessionFactoryServiceRegistryFactory to the StandardServiceRegistryImpl I call the next line before building the SessionFactory itself:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
sr.locateServiceBinding(SessionFactoryServiceRegistryFactory.class).setService(<span class="code-keyword" style="color: #000091">new</span> XXSessionFactoryServiceRegistryFactory(sr));
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<p style="margin: 10px 0 0 0">This approach is able to evict elements from the cache for a specific tenant.</p>
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