/// <summary>
/// Get all database information
/// </summary>
public BsonObject GetDatabaseInfo()
{
this.Transaction.AvoidDirtyRead();
var info = new BsonObject();
var param = new BsonObject();
info["filename"] = this.ConnectionString.Filename;
info["journal"] = this.ConnectionString.JournalEnabled;
info["timeout"] = this.ConnectionString.Timeout.TotalSeconds;
info["version"] = this.Cache.Header.UserVersion;
info["changeID"] = this.Cache.Header.ChangeID;
info["fileLength"] = (this.Cache.Header.LastPageID + 1) * BasePage.PAGE_SIZE;
info["lastPageID"] = this.Cache.Header.LastPageID;
info["pagesInCache"] = this.Cache.PagesInCache;
info["dirtyPages"] = this.Cache.GetDirtyPages().Count();
// parameters info
param[MAX_FILE_LENGTH] = this.Cache.Header.MaxFileLength == long.MaxValue ? BsonValue.Null : new BsonValue(this.Cache.Header.MaxFileLength);
param[INDEX_IGNORE_CASE] = true;
param[INDEX_WHITESPACE_TO_NULL] = true;
info["parameters"] = param;
return(info);
}
internal FileEntry(LiteEngine engine, BsonDocument doc)
{
_engine = engine;
this.Id = doc.Id.ToString();
this.Filename = doc["filename"].AsString;
this.MimeType = doc["mimeType"].AsString;
this.Length = doc["length"].AsLong;
this.UploadDate = doc["uploadDate"].AsDateTime;
this.Metadata = doc["metadata"].AsObject;
}
public BsonObject Stats()
{
_engine.Transaction.AvoidDirtyRead();
var col = this.GetCollectionPage(false);
if (col == null)
{
return(new BsonObject());
}
var stats = new BsonObject();
stats["name"] = col.CollectionName;
stats["documents"] = col.DocumentCount;
//TODO: Não tenho como fazer de forma eficiente.
// Não tenho um link de todas as paginas de uma mesma colecao
// Somente quando implementar os Drop/DropCollection corretos vou conseguir isso
//
// db.collection.dataSize(): data size in bytes for the collection.
// db.collection.storageSize(): allocation size in bytes, including unused space.
// db.collection.totalSize(): the data size plus the index size in bytes.
// db.collection.totalIndexSize(): the index size in bytes.
// indexes
stats["indexes"] = new BsonArray();
for (var i = 0; i < col.Indexes.Length; i++)
{
var index = col.Indexes[i];
if (index.IsEmpty)
{
continue;
}
var idx = new BsonObject();
idx["field"] = index.Field;
idx["unique"] = index.Unique;
// nullCount
// avg key size
// % (0.00-1.00) distinct > quanto mais proximo do 1 melhor, mais seletivo
stats["indexes"].AsArray.Add(idx);
}
return(stats);
}
public FileEntry(string id, string filename)
{
if (!Regex.IsMatch(id, ID_PATTERN))
{
throw new LiteException("Invalid file id format.");
}
this.Id = id;
this.Filename = Path.GetFileName(filename);
this.MimeType = MimeTypeConverter.GetMimeType(this.Filename);
this.Length = 0;
this.UploadDate = DateTime.Now;
this.Metadata = new BsonObject();
}
/// <summary>
/// Get all database information
/// </summary>
public BsonObject GetDatabaseInfo()
{
this.Transaction.AvoidDirtyRead();
var info = new BsonObject();
info["filename"] = this.ConnectionString.Filename;
info["journal"] = this.ConnectionString.JournalEnabled;
info["timeout"] = this.ConnectionString.Timeout.TotalSeconds;
info["version"] = this.Cache.Header.UserVersion;
info["changeID"] = this.Cache.Header.ChangeID;
info["fileLength"] = (this.Cache.Header.LastPageID + 1) * BasePage.PAGE_SIZE;
info["lastPageID"] = this.Cache.Header.LastPageID;
info["pagesInCache"] = this.Cache.PagesInCache;
info["dirtyPages"] = this.Cache.GetDirtyPages().Count();
return(info);
}
private void WriteObject(BsonObject obj, object docId)
{
var hasData = obj.Keys.Length > 0;
this.WriteStartBlock("{", hasData);
if (docId != null)
{
this.WriteKeyValue("_id", new BsonValue(docId), hasData);
}
var index = 0;
foreach (var key in obj.Keys)
{
this.WriteKeyValue(key, obj[key], index++ < obj.Keys.Length - 1);
}
this.WriteEndBlock("}", hasData);
}
private BsonObject ReadObject(StringScanner s)
{
var obj = new BsonObject();
s.Scan(@"\s*{");
while (!s.Match(@"\s*}"))
{
s.Scan(@"\s*");
// accept key without "
var key = s.Match(@"[\w$]+") ?
s.Scan(@"[\w$]+") : this.ReadString(s);
if (key.Trim().Length == 0)
{
throw new ArgumentException("Invalid json object key");
}
s.Scan(@"\s*:\s*");
var value = this.ReadValue(s);
obj[key] = value;
if (s.Scan(@"\s*,").Length == 0)
{
break;
}
}
if (s.Scan(@"\s*}").Length == 0)
{
throw new ArgumentException("Missing close json object symbol");
}
return(obj);
}
