/*
, byte[] coverData
*/
public void StoreFile(BaseFile file)
{
byte[] coverData = null;
try {
coverData = Encode(file.MaybeGetCover());
}
catch (Exception) {
// Ignore and store null.
}
_store.MaybeStoreFile(file, Encode(file), coverData);
}
internal void UpdateFileCache(BaseFile aFile)
{
if (store != null) {
store.MaybeStoreFile(aFile);
}
}
internal Cover GetCover(BaseFile file)
{
if (store != null) {
return store.MaybeGetCover(file);
}
return null;
}
void AddPending(BaseFile file)
{
lock (pendingFiles) {
if (pendingFiles.Any(f => ((BaseFile)f.Target).Path == file.Path)) return;
pendingFiles.Add(new WeakReference(file));
}
}
internal void UpdateFileCache(BaseFile aFile)
{
if (_storeWriter != null) {
_storeWriter.StoreFile(aFile);
}
}
internal Cover GetCover(BaseFile file)
{
if (_storeReader != null) {
return _storeReader.GetCover(file);
}
return null;
}
internal void MaybeStoreFile(BaseFile file)
{
if (connection == null) {
return;
}
if (!file.GetType().Attributes.HasFlag(TypeAttributes.Serializable)) {
return;
}
try {
using (var s = new MemoryStream()) {
var ctx = new StreamingContext(StreamingContextStates.Persistence, null);
var formatter = new BinaryFormatter(null, ctx) { TypeFormat = FormatterTypeStyle.TypesWhenNeeded, AssemblyFormat = FormatterAssemblyStyle.Simple };
formatter.Serialize(s, file);
lock (connection) {
insertKey.Value = file.Item.FullName;
insertSize.Value = file.Item.Length;
insertTime.Value = file.Item.LastWriteTimeUtc.Ticks;
insertData.Value = s.ToArray();
var cover = file.MaybeGetCover();
if (cover != null) {
using (var c = new MemoryStream()) {
formatter.Serialize(c, cover);
insertCover.Value = c.ToArray();
}
}
else {
insertCover.Value = null;
}
try {
insert.ExecuteNonQuery();
}
catch (DbException ex) {
Error("Failed to put file cover into store", ex);
return;
}
}
}
}
catch (Exception ex) {
Error("Failed to serialize an object of type " + file.GetType(), ex);
throw;
}
}
internal Cover MaybeGetCover(BaseFile file)
{
if (connection == null) {
return null;
}
var info = file.Item;
byte[] data;
lock (connection) {
selectCoverKey.Value = info.FullName;
selectCoverSize.Value = info.Length;
selectCoverTime.Value = info.LastWriteTimeUtc.Ticks;
try {
data = selectCover.ExecuteScalar() as byte[];
}
catch (DbException ex) {
Error("Failed to lookup file cover from store", ex);
return null;
}
}
if (data == null) {
return null;
}
try {
using (var s = new MemoryStream(data)) {
var ctx = new StreamingContext(StreamingContextStates.Persistence, new DeserializeInfo(null, info, DlnaMime.JPEG));
var formatter = new BinaryFormatter(null, ctx) { TypeFormat = FormatterTypeStyle.TypesWhenNeeded, AssemblyFormat = FormatterAssemblyStyle.Simple };
var rv = formatter.Deserialize(s) as Cover;
return rv;
}
}
catch (SerializationException ex) {
Debug("Failed to deserialize a cover", ex);
return null;
}
catch (Exception ex) {
Fatal("Failed to deserialize a cover", ex);
throw;
}
}
internal bool HasCover(BaseFile file)
{
if (connection == null) {
return false;
}
var info = file.Item;
lock (connection) {
selectCoverKey.Value = info.FullName;
selectCoverSize.Value = info.Length;
selectCoverTime.Value = info.LastWriteTimeUtc.Ticks;
try {
var data = selectCover.ExecuteScalar();
return (data as byte[]) != null;
}
catch (DbException ex) {
Error("Failed to lookup file cover existence from store", ex);
return false;
}
}
}