/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.drools.persistence.infinispan;
import org.drools.persistence.api.PersistenceContext;
import org.drools.persistence.api.PersistentSession;
import org.drools.persistence.api.PersistentWorkItem;
import org.drools.persistence.info.EntityHolder;
import org.infinispan.Cache;
public class InfinispanPersistenceContext implements PersistenceContext {
private static long SESSIONINFO_KEY = 1;
private static long WORKITEMINFO_KEY = 1;
private static final Object syncObject = new Object();
private Cache<String, Object> cache;
private boolean isJTA;
public InfinispanPersistenceContext(Cache<String, Object> cache) {
this(cache, true);
}
public InfinispanPersistenceContext(Cache<String, Object> cache, boolean isJTA) {
this.cache = cache;
this.isJTA = isJTA;
}
public PersistentSession persist(PersistentSession entity) {
if (entity.getId() == null) {
entity.setId(generateSessionInfoId());
}
String key = createSessionKey(entity.getId());
entity.transform();
this.cache.put(key , new EntityHolder(key, entity) );
return entity;
}
private Long generateSessionInfoId() {
synchronized (syncObject) {
while (cache.containsKey("sessionInfo" + SESSIONINFO_KEY)) {
SESSIONINFO_KEY++;
}
}
return SESSIONINFO_KEY;
}
private Long generateWorkItemInfoId() {
synchronized (syncObject) {
while (cache.containsKey("workItem" + WORKITEMINFO_KEY)) {
WORKITEMINFO_KEY++;
}
}
return WORKITEMINFO_KEY;
}
private String createSessionKey(Long id) {
return "sessionInfo" + safeId(id);
}
private String createWorkItemKey(Long id) {
return "workItem" + safeId(id);
}
private String safeId(Number id) {
return String.valueOf(id); //TODO
}
public PersistentSession findSession(Long id) {
EntityHolder holder = (EntityHolder) this.cache.get( createSessionKey(id) );
if (holder == null) {
return null;
}
return holder.getSessionInfo();
}
@Override
public void remove(PersistentSession sessionInfo) {
cache.remove( createSessionKey(sessionInfo.getId()) );
cache.evict( createSessionKey(sessionInfo.getId()) );
}
public boolean isOpen() {
//cache doesn't close
return true;
}
public void joinTransaction() {
if (isJTA) {
//cache.getAdvancedCache().getTransactionManager().getTransaction().???? TODO
}
}
public void close() {
//cache doesn't close
}
public PersistentWorkItem persist(PersistentWorkItem workItemInfo) {
if (workItemInfo.getId() == null) {
workItemInfo.setId(generateWorkItemInfoId());
}
String key = createWorkItemKey(workItemInfo.getId());
workItemInfo.transform();
cache.put(key, new EntityHolder(key, workItemInfo));
return workItemInfo;
}
public PersistentWorkItem findWorkItem(Long id) {
EntityHolder holder = (EntityHolder) cache.get(createWorkItemKey(id));
if (holder == null) {
return null;
}
return holder.getWorkItemInfo();
}
public void remove(PersistentWorkItem workItemInfo) {
cache.remove( createWorkItemKey(workItemInfo.getId()) );
cache.evict( createWorkItemKey(workItemInfo.getId()) );
}
public PersistentWorkItem merge(PersistentWorkItem workItemInfo) {
String key = createWorkItemKey(workItemInfo.getId());
workItemInfo.transform();
EntityHolder entityHolder = new EntityHolder(key, workItemInfo);
cache.put(key, entityHolder);
return workItemInfo;
}
public Cache<String, Object> getCache() {
return cache;
}
public void lock(PersistentWorkItem workItemInfo) {
// no-op: no locking implemented here
}
}