package org.neo4j.kernel.impl.management;
import java.security.AccessControlException;
import javax.management.MBeanOperationInfo;
import javax.management.NotCompliantMBeanException;
import org.neo4j.kernel.impl.core.NodeManager;
import org.neo4j.kernel.management.Cache;
@Description( "Information about the caching in Neo4j" )
class CacheBean extends Neo4jMBean implements Cache
{
private final NodeManager nodeManager;
CacheBean( int instanceId, NodeManager nodeManager ) throws NotCompliantMBeanException
{
super( instanceId, Cache.class );
this.nodeManager = nodeManager;
}
@Description( "The type of cache used by Neo4j" )
public String getCacheType()
{
return nodeManager.isUsingSoftReferenceCache() ? "soft reference cache" : "lru cache";
}
@Description( "The number of Nodes currently in cache" )
public int getNodeCacheSize()
{
return nodeManager.getNodeCacheSize();
}
@Description( "The number of Relationships currently in cache" )
public int getRelationshipCacheSize()
{
return nodeManager.getRelationshipCacheSize();
}
@Description( value = "Clears the Neo4j caches", impact = MBeanOperationInfo.ACTION )
public void clear()
{
if ( true )
throw new AccessControlException( "Clearing cache through JMX not permitted." );
nodeManager.clearCache();
}
}