org.jbpm.marshalling.impl
Class ProcessInstanceResolverStrategy

java.lang.Object
  org.jbpm.marshalling.impl.ProcessInstanceResolverStrategy

All Implemented Interfaces:

ObjectMarshallingStrategy

public class ProcessInstanceResolverStrategy
extends Object
implements ObjectMarshallingStrategy

When using this strategy, knowledge session de/marshalling process will make sure that the processInstance is not serialized as a part of the the session/network.

Instead, this strategy, which may only be used for ProcessInstance objects, saves the process instance in the ProcessInstanceManager, and later retrieves it from there.

If you're doing tricky things with serialization and persistence, please make sure to remember that the ProcessInstanceManager cache of process instances is emptied at the end of every transaction (commit).

Nested Class Summary

Nested classes/interfaces inherited from interface org.drools.marshalling.ObjectMarshallingStrategy

ObjectMarshallingStrategy.Context

Constructor Summary

ProcessInstanceResolverStrategy()

Method Summary

boolean	accept(Object object)
ObjectMarshallingStrategy.Context	createContext() Creates a new marshalling context
byte[]	marshal(ObjectMarshallingStrategy.Context context, ObjectOutputStream os, Object object) This method is analogous to the write() method, but instead of writing the object into an output stream, it returns the marshalled object as a byte[].
Object	read(ObjectInputStream is)
static org.drools.common.InternalKnowledgeRuntime	retrieveKnowledgeRuntime(Object streamContext) Retrieve the ProcessInstanceManager object from the ObjectOutput- or ObjectInputStream.
static ProcessInstanceManager	retrieveProcessInstanceManager(Object streamContext) Retrieve the ProcessInstanceManager object from the ObjectOutput- or ObjectInputStream.
Object	unmarshal(ObjectMarshallingStrategy.Context context, ObjectInputStream is, byte[] object, ClassLoader classloader) This method is analogous to the read method, but instead of reading it from an input stream, it reads it from a byte[]
void	write(ObjectOutputStream os, Object object)

Methods inherited from class java.lang.Object

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

Constructor Detail

ProcessInstanceResolverStrategy

public ProcessInstanceResolverStrategy()

Method Detail

accept

public boolean accept(Object object)

Specified by:

accept in interface ObjectMarshallingStrategy

write

public void write(ObjectOutputStream os,
                  Object object)
           throws IOException

Specified by:

write in interface ObjectMarshallingStrategy

Throws:

IOException

read

public Object read(ObjectInputStream is)
            throws IOException,
                   ClassNotFoundException

Specified by:

read in interface ObjectMarshallingStrategy

Throws:

IOException

ClassNotFoundException

retrieveProcessInstanceManager

public static ProcessInstanceManager retrieveProcessInstanceManager(Object streamContext)

Retrieve the ProcessInstanceManager object from the ObjectOutput- or ObjectInputStream. The stream object will secretly also either be a MarshallerReaderContext or a MarshallerWriteContext.

Parameters:

streamContext - The marshaller stream/context.

Returns:

A ProcessInstanceManager object.

retrieveKnowledgeRuntime

public static org.drools.common.InternalKnowledgeRuntime retrieveKnowledgeRuntime(Object streamContext)

Retrieve the ProcessInstanceManager object from the ObjectOutput- or ObjectInputStream. The stream object will secretly also either be a MarshallerReaderContext or a MarshallerWriteContext.

The knowledge runtime object is useful in order to reconnect the process instance to the process and the knowledge runtime object.

Parameters:

streamContext - The marshaller stream/context.

Returns:

A InternalKnowledgeRuntime object.

marshal

public byte[] marshal(ObjectMarshallingStrategy.Context context,
                      ObjectOutputStream os,
                      Object object)
               throws IOException

Description copied from interface: ObjectMarshallingStrategy

This method is analogous to the write() method, but instead of writing the object into an output stream, it returns the marshalled object as a byte[].

Specified by:

marshal in interface ObjectMarshallingStrategy

object - the object to be marshalled

Returns:

the marshalled byte[] of the input object

Throws:

IOException

unmarshal

public Object unmarshal(ObjectMarshallingStrategy.Context context,
                        ObjectInputStream is,
                        byte[] object,
                        ClassLoader classloader)
                 throws IOException,
                        ClassNotFoundException

Description copied from interface: ObjectMarshallingStrategy

This method is analogous to the read method, but instead of reading it from an input stream, it reads it from a byte[]

Specified by:

unmarshal in interface ObjectMarshallingStrategy

object - the marshalled object in a byte[]

Returns:

the unmarshalled Object

Throws:

IOException

ClassNotFoundException

createContext

public ObjectMarshallingStrategy.Context createContext()

Description copied from interface: ObjectMarshallingStrategy

Creates a new marshalling context

Specified by:

createContext in interface ObjectMarshallingStrategy