public URL getLocalURL(String location) throws IOException {
if (isUpToDate(location)) {
return local.getURL(location);
}
Map<String, Object> metadata = new HashMap<String, Object>();
InputStream is = remote.getContents(location, metadata);
local.storeData(location, is, metadata);
return local.getURL(location);
}
public void flushCache() {
try {
local.flushAll();
} catch (IOException e) {
logger.error("Error: ", e);
}
}
public boolean isUpToDate(String location) throws IOException {
if (!hasLocal(location)) {
return false;
}
long localMod = local.getLocalModificationDate(location);
long remoteMod = remote.getRemoteModificationDate(location);
if (localMod >= remoteMod) {
return true;
}
return false;
}
public boolean hasLocal(String location) throws IOException {
return local.hasLocal(location);
}