/**
* Get a WMSTile or an empty lockable WMSTile. Used to avoid index queries for the same
* information.
*
* @param query Search url params to store as String.
* @param colourmode colourmode as String
* @param pointType data resolution as PointType
* @return WMSTile that can be in varying states: - being filled when !getCached() and
* isCacheable() and is locked - will not be filled when !isCacheable() - ready to use when
* getCached()
*/
public WMSTile get(String query, String colourmode, PointType pointType) {
String key = getKey(query, colourmode, pointType);
WMSTile obj = null;
synchronized (getLock) {
obj = cache.get(key);
if (obj != null && obj.getCreated() + maxAge < System.currentTimeMillis()) {
cache.remove(key);
obj = null;
}
if (obj == null) {
obj = new WMSTile();
cache.put(key, obj);
}
}
if (obj != null) {
obj.lastUse = System.currentTimeMillis();
}
return obj;
}
/**
* Store search params and return key.
*
* @param q Search url params to store as String.
* @param colourMode to store as String
* @param pointType resolution of data to store as PointType
* @param wco data to store as WMSTile
* @return true when successfully added to the cache. WMSCache must be enabled, not full. wco must
* be not too large and not cause the cache to exceed max size when added.
*/
public boolean put(String q, String colourMode, PointType pointType, WMSTile wco) {
if (isFull() || !isEnabled()) {
return false;
}
wco.updateSize();
synchronized (counterLock) {
if (cacheSize + wco.getSize() > maxCacheSize) {
return false;
}
cache.put(getKey(q, colourMode, pointType), wco);
cacheSize += wco.getSize();
logger.debug("new cache size: " + cacheSize);
updateTriggerCleanSize();
if (cacheSize > triggerCleanSize) {
counter.countDown();
}
}
wco.setCached(true);
return true;
}