/// <summary>
/// Insert configuration value to database.
/// </summary>
/// <param name="columnName">Configuration column name.</param>
/// <param name="value">New value.</param>
private void UpdateConfigurationValue <T>(string columnName, T value)
{
UseDatabase(() =>
{
IWantToDatabase.UpdateConfiguration(columnName, value);
_log.InfoFormat("Written Configuration '{0}' = '{1}'", columnName, value);
});
}
/// <summary>
/// Read configuration value from database.
/// </summary>
/// <param name="columnName">Configuration column name.</param>
/// <returns>Value from user configuration.</returns>
private T ReadConfigurationValue <T>(string columnName)
{
var ret = default(T);
UseDatabase(() =>
{
ret = IWantToDatabase.GetConfiguration <T>(columnName);
_log.InfoFormat("Readed Configuration '{0}' = '{1}'", columnName, ret);
});
return(ret);
}
/// <summary>
/// Gets full or preview image from cache. If missing null is returned.
/// </summary>
/// <param name="key">Image key, it can be URL or image Path.</param>
/// <param name="preview">True for requesting preview image, false if we need full size image.</param>
/// <returns>Bitmap or null if image doesn't exist in cache.</returns>
public Bitmap TryGetImage(string key, bool preview)
{
Bitmap retBitmap = null;
var record = IWantToDatabase.GetFileLruCache(key);
if (record != null)
{
_log.InfoFormat("Image with key: '{0}' already stored in cache.", key);
var data = (preview) ? record.Preview : record.Data;
var bitmap = BitmapFactory.DecodeByteArray(data, 0, data.Length);
retBitmap = bitmap;
}
else
{
_log.WarnFormat("Image with key: '{0}' missing in cache.", key);
}
return(retBitmap);
}
/// <summary>
/// Stores downloaded image to database LruCache.
/// </summary>
/// <param name="key">Image key, it can be URL or Path.</param>
/// <param name="fullImage">Full Bitmap.</param>
/// <param name="previewImage">Preview Bitmap.</param>
/// <param name="addData">Additional data. Note: it is not used in this time.</param>
public void InsertImageToCache(string key, Bitmap fullImage, Bitmap previewImage, long addData)
{
var cacheRecord = new FileLruCache(key, ImageUtils.Instance.TransformBitmapToByteArray(fullImage), ImageUtils.Instance.TransformBitmapToByteArray(previewImage), addData);
IWantToDatabase.InsertFileLruCache(cacheRecord);
}
