com.ashtonit.odb.jndi

Class OPDPFObjectFactory

java.lang.Object

com.ashtonit.odb.jndi.OPDPFObjectFactory

All Implemented Interfaces:

ObjectFactory

public class OPDPFObjectFactory
extends Object
implements ObjectFactory

An implementation of ObjectFactory that returns an OPartitionedDatabasePoolFactory instance in response to a JNDI lookup.

The auth attribute should have the value "Container".

The maximum number of connections can be set with the capacity attribute.

The resource should always be a singleton and a closeMethod attribute with the value "close " should also be present.

Use the name of this class as the value of the factory attribute of the <Resource> tag.

The server attribute is optional and should be used when running an embedded database. It references an OServer instance produced by an OServerObjectFactory factory. If the server attribute is present and this element is not, you will get a naming exception. If the other resource element is present but the server attribute is not declared here, your server may never be started because the JNDI lookup never occurs.

The type attribute is com.orientechnologies.orient.core.db.OPartitionedDatabasePoolFactory.

An example resource declaration:

 <Resource
   auth="Container"
   capacity="100"
   closeMethod="close"
   factory="com.ashtonit.odb.OPDPFObjectFactory"
   name="opdpfactory"
   server="oserver"
   singleton="true"
   type="com.orientechnologies.orient.core.db.OPartitionedDatabasePoolFactory"
 />
 

Author:

Bruce Ashton

Constructor Summary

Constructors

Constructor and Description
OPDPFObjectFactory()

Method Summary

Modifier and Type	Method and Description
com.orientechnologies.orient.core.db.OPartitionedDatabasePoolFactory	getObjectInstance(Object obj, Name name, Context nameCtx, Hashtable<?,?> environment) Returns an OPartitionedDatabasePoolFactory instance and optionally initializes an embedded OServer instance if the resource name is passed in as an attribute.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OPDPFObjectFactory

public OPDPFObjectFactory()

Method Detail

getObjectInstance

public com.orientechnologies.orient.core.db.OPartitionedDatabasePoolFactory getObjectInstance(Object obj,
                                                                                              Name name,
                                                                                              Context nameCtx,
                                                                                              Hashtable<?,?> environment)
                                                                                       throws NamingException

Returns an OPartitionedDatabasePoolFactory instance and optionally initializes an embedded OServer instance if the resource name is passed in as an attribute. This instance is always a singleton, regardless of attributes in server.xml files etc.

The OServer instance is just looked up in JNDI, if it is declared in the resource element. It is the responsibility of the OServer object factory to actually start the server up. Be sure to add a OServerObjectFactory resource element for the server if you do reference it here.

Specified by:

getObjectInstance in interface ObjectFactory

Parameters:

obj - the naming reference

name - not used

nameCtx - the naming context used if present

environment - used to create an initial context if a naming context is not passed in

Returns:

the OPartitionedDatabasePoolFactory instance

Throws:

NamingException - if the declared server instance cannot be found in the JNDI context

See Also:

ObjectFactory.getObjectInstance(Object, Name, Context, Hashtable)