/*
* 2012-3 Red Hat Inc. and/or its affiliates and other contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.overlord.rtgov.activity.model.bpm;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import javax.persistence.Entity;
import org.overlord.rtgov.activity.model.ActivityType;
import org.overlord.rtgov.activity.model.Context;
/**
* This activity type represents a BPM actvity.
*
*/
@Entity
public abstract class BPMActivityType extends ActivityType implements java.io.Externalizable {
private static final int VERSION = 1;
private String _processType=null;
private String _instanceId=null;
/**
* The default constructor.
*/
public BPMActivityType() {
}
/**
* The copy constructor.
*
* @param ba The bpm activity to copy
*/
public BPMActivityType(BPMActivityType ba) {
super(ba);
_processType = ba._processType;
_instanceId = ba._instanceId;
}
/**
* This method sets the process type.
*
* @param processType The process type
*/
public void setProcessType(String processType) {
_processType = processType;
updateEndpointContext();
}
/**
* This method gets the process type.
*
* @return The process type
*/
public String getProcessType() {
return (_processType);
}
/**
* This method sets the instance id. The information is
* actually stored as a context entry for the Endpoint type.
*
* @param instanceId The instance id
*/
public void setInstanceId(String instanceId) {
_instanceId = instanceId;
updateEndpointContext();
}
/**
* This method gets the instance id.
*
* @return The instance id
*/
public String getInstanceId() {
return (_instanceId);
}
/**
* This method updates the endpoint context value
* when the process type and/or instance id are
* changed.
*/
protected void updateEndpointContext() {
Context current=null;
try {
for (Context context : getContext()) {
if (context.getType() == Context.Type.Endpoint) {
current = context;
break;
}
}
if (current == null) {
current = new Context();
current.setType(Context.Type.Endpoint);
getContext().add(current);
}
String endpoint="";
if (_processType != null) {
endpoint = _processType;
if (_instanceId != null) {
endpoint += ":";
}
}
if (_instanceId != null) {
endpoint += _instanceId;
}
current.setValue(endpoint);
} catch (Throwable t) {
// RTGOV-278 NPE exception occurs when de-serializing
// BPM activity type events with Hibernate, where the
// query accesses the context information.
current = null;
}
}
/**
* {@inheritDoc}
*/
public String toString() {
return (getClass().getSimpleName()+":"
+" processType="+_processType
+" instanceId="+_instanceId);
}
/**
* {@inheritDoc}
*/
public void writeExternal(ObjectOutput out) throws IOException {
super.writeExternal(out);
out.writeInt(VERSION);
out.writeObject(_processType);
out.writeObject(_instanceId);
}
/**
* {@inheritDoc}
*/
public void readExternal(ObjectInput in) throws IOException,
ClassNotFoundException {
super.readExternal(in);
in.readInt(); // Consume version, as not required for now
_processType = (String)in.readObject();
_instanceId = (String)in.readObject();
}
}