public static async Task UpdateTaxonAsync(this SQLiteDatabase database, ITaxon taxon)
{
string tableName = GetTableNameForRank(taxon.GetRank());
if (!string.IsNullOrEmpty(tableName))
{
string parentColumnName = GetFieldNameForRank(taxon.GetParentRank());
string updateParentColumnStr = string.Empty;
if (!string.IsNullOrEmpty(parentColumnName) && taxon.ParentId.HasValue)
{
updateParentColumnStr = string.Format(", {0}=$parent_id", parentColumnName);
}
using (SQLiteCommand cmd = new SQLiteCommand(string.Format("UPDATE {0} SET name = $name, description = $description, pics = $pics{1}, common_name = $common_name WHERE id = $id",
tableName, updateParentColumnStr))) {
cmd.Parameters.AddWithValue("$id", taxon.Id);
cmd.Parameters.AddWithValue("$name", taxon.Name.ToLowerInvariant());
cmd.Parameters.AddWithValue("$description", taxon.Description);
cmd.Parameters.AddWithValue("$pics", taxon.GetPictureUrl());
// Because this field was added in a database update, it's possible for it to be null rather than the empty string.
cmd.Parameters.AddWithValue("$common_name", string.IsNullOrEmpty(taxon.GetCommonName()) ? "" : taxon.GetCommonName().ToLowerInvariant());
if (!string.IsNullOrEmpty(parentColumnName) && taxon.ParentId.HasValue)
{
cmd.Parameters.AddWithValue("$parent_column_name", parentColumnName);
cmd.Parameters.AddWithValue("$parent_id", taxon.ParentId);
}
await database.ExecuteNonQueryAsync(cmd);
}
}
}