protected CacheEntry getCache() {
if (_cacheEntry == null) {
synchronized (_cache) {
_cacheEntry = _cache.get(getPath());
if (_cacheEntry == null) {
_cacheEntry = new CacheEntry();
_cache.put(getPath(), _cacheEntry);
}
}
}
long now;
now = Alarm.getCurrentTime();
synchronized (_cacheEntry) {
try {
if (_cacheEntry.expires > now) return _cacheEntry;
HttpStreamWrapper stream = (HttpStreamWrapper) openReadImpl();
stream.setHead(true);
stream.setSocketTimeout(120000);
String status = (String) stream.getAttribute("status");
if (status.equals("200")) {
String lastModified = (String) stream.getAttribute("last-modified");
_cacheEntry.lastModified = 0;
if (lastModified != null) {
QDate date = QDate.getGlobalDate();
synchronized (date) {
_cacheEntry.lastModified = date.parseDate(lastModified);
}
}
String length = (String) stream.getAttribute("content-length");
_cacheEntry.length = 0;
if (length != null) {
_cacheEntry.length = Integer.parseInt(length);
}
} else _cacheEntry.lastModified = -1;
_cacheEntry.expires = now + 5000;
stream.close();
return _cacheEntry;
} catch (Exception e) {
_cacheEntry.lastModified = -1;
_cacheEntry.expires = now + 5000;
return _cacheEntry;
}
}
}
/*
* (non-Javadoc)
*
* @see ch.elexis.data.cache.IPersistentObjectCache#purge()
*/
public void purge() {
synchronized (cache) {
Iterator<Entry<K, CacheEntry>> it = cache.entrySet().iterator();
long freeBefore = Runtime.getRuntime().freeMemory();
while (it.hasNext()) {
Entry<K, CacheEntry> e = it.next();
CacheEntry ce = e.getValue();
ce.expires = 0;
ce.get();
it.remove();
}
if (Hub.plugin.DEBUGMODE) {
long freeAfter = Runtime.getRuntime().freeMemory();
StringBuilder sb = new StringBuilder();
sb.append("Cache purge: Free memore before: ")
.append(freeBefore)
.append(", free memory after: ")
.append(freeAfter)
.append("\n");
Hub.log.log(sb.toString(), Log.INFOS);
}
}
}