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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.ote.client.msg.core.db;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Level;
import org.eclipse.osee.framework.logging.OseeLog;
import org.eclipse.osee.framework.plugin.core.util.ExportClassLoader;
import org.eclipse.osee.ote.client.msg.core.internal.MessageReference;
import org.eclipse.osee.ote.message.Message;
import org.eclipse.osee.ote.message.data.MessageData;
import org.eclipse.osee.ote.message.enums.DataType;
import org.eclipse.osee.ote.message.interfaces.IMsgToolServiceClient;
import org.eclipse.osee.ote.message.interfaces.IRemoteMessageService;
import org.eclipse.osee.ote.message.tool.MessageMode;
import org.eclipse.osee.ote.messaging.dds.entity.DataReader;
import org.eclipse.osee.ote.messaging.dds.entity.EntityFactory;
/**
* @author Ken J. Aguilar
*/
public abstract class AbstractMessageDataBase {
private final HashMap<MessageReference, MessageInstance> referenceToMsgMap =
new HashMap<MessageReference, MessageInstance>();
private final ConcurrentHashMap<Integer, MessageInstance> idToMsgMap =
new ConcurrentHashMap<Integer, MessageInstance>();
private IMsgToolServiceClient client;
private IRemoteMessageService service;
private final DataReader reader = new DataReader(null, null, true, null, new EntityFactory() {
@Override
public boolean isEnabled() {
return true;
}
});
protected AbstractMessageDataBase() {
}
public MessageInstance findInstance(String name, MessageMode mode, DataType type) {
MessageReference reference = new MessageReference(type, mode, name);
return referenceToMsgMap.get(reference);
}
public MessageInstance acquireInstance(String name) throws Exception {
return acquireInstance(name, MessageMode.READER, (DataType) null);
}
public MessageInstance acquireInstance(String name, MessageMode mode, DataType type) throws Exception {
if (type == null) {
Class<? extends Message> msgClass = ExportClassLoader.getInstance().loadClass(name).asSubclass(Message.class);
type = msgClass.newInstance().getDefaultMessageData().getType();
}
MessageReference reference = new MessageReference(type, mode, name);
MessageInstance instance = referenceToMsgMap.get(reference);
if (instance == null) {
Class<? extends Message> msgClass = ExportClassLoader.getInstance().loadClass(name).asSubclass(Message.class);
Message msg = createMessage(msgClass);
for (ArrayList<MessageData> dataList : (Collection<ArrayList<MessageData>>) msg.getAllData()) {
for (MessageData data : dataList) {
data.setReader(reader);
}
}
msg.setMemSource(type);
instance = new MessageInstance(msg, mode, type);
referenceToMsgMap.put(reference, instance);
}
instance.incrementReferenceCount();
if (service != null && !instance.isAttached()) {
doInstanceAttach(instance, service);
}
return instance;
}
public MessageInstance acquireInstance(String name, MessageMode mode, String dataType) throws Exception {
Class<? extends Message> msgClass = ExportClassLoader.getInstance().loadClass(name).asSubclass(Message.class);
Message msg = msgClass.newInstance();
//Set<DataType> available = msg.getAvailableMemTypes();
Set<DataType> available = msg.getAssociatedMessages().keySet();
DataType requestDataType = msg.getDefaultMessageData().getType();
for (DataType type : available) {
if (type.name().equals(dataType)) {
requestDataType = type;
break;
}
}
MessageReference reference = new MessageReference(requestDataType, mode, name);
MessageInstance instance = referenceToMsgMap.get(reference);
if (instance == null) {
msg = createMessage(msgClass);
msg.setMemSource(requestDataType);
for (ArrayList<MessageData> dataList : (Collection<ArrayList<MessageData>>) msg.getAllData()) {
for (MessageData data : dataList) {
data.setReader(reader);
}
}
instance = new MessageInstance(msg, mode, requestDataType);
referenceToMsgMap.put(reference, instance);
}
instance.incrementReferenceCount();
if (service != null && !instance.isAttached()) {
doInstanceAttach(instance, service);
}
return instance;
}
public void releaseInstance(MessageInstance instance) throws Exception {
instance.decrementReferenceCount();
if (!instance.hasReferences()) {
if (instance.isAttached()) {
doInstanceDetach(instance, service);
}
MessageReference reference =
new MessageReference(instance.getType(), instance.getMode(), instance.getMessage().getClass().getName());
referenceToMsgMap.remove(reference);
destroyMessage(instance.getMessage());
}
}
protected abstract Message createMessage(Class<? extends Message> msgClass) throws Exception;
protected abstract void destroyMessage(Message message) throws Exception;
public void attachToService(IRemoteMessageService service, IMsgToolServiceClient client) {
this.service = service;
this.client = client;
for (MessageInstance instance : referenceToMsgMap.values()) {
try {
doInstanceAttach(instance, service);
} catch (Exception e) {
OseeLog.log(AbstractMessageDataBase.class, Level.SEVERE,
"could not attach instance for " + instance.toString(), e);
}
}
}
public void detachService(IRemoteMessageService service) {
for (MessageInstance instance : referenceToMsgMap.values()) {
doInstanceDetach(instance, service);
}
this.service = null;
this.client = null;
}
public MessageInstance findById(int id) {
return idToMsgMap.get(id);
}
private boolean doInstanceAttach(MessageInstance instance, IRemoteMessageService service) throws Exception {
Integer id = instance.attachToService(service, client);
if (id == null) {
// can't subscribe because environment does not support this type
return false;
}
idToMsgMap.put(id, instance);
return true;
}
private void doInstanceDetach(MessageInstance instance, IRemoteMessageService service) {
try {
Integer id = instance.getId();
if (id != null) {
idToMsgMap.remove(id);
}
instance.detachService(service, client);
} catch (Exception e) {
e.printStackTrace();
}
}
}
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