public static bool RestoreDataFromStream(ConnectionPool pool, ref Stream inputStream)
{
Connection c = pool.LockDownForBackupRestore();
System.Threading.Thread.Sleep(500);
//disable autogen fields as well as all relationship constraints
c.StartTransaction();
c.DisableAutogens();
System.Threading.Thread.Sleep(500);
c.Commit();
pool.EmptyAllTables(c);
System.Threading.Thread.Sleep(500);
c.Commit();
//pool.DisableRelationships(c);
//System.Threading.Thread.Sleep(500);
//c.Commit();
System.Threading.Thread.Sleep(500);
ZipFile zf = new ZipFile(inputStream, true);
XmlDocument doc;
string type;
Type t;
Dictionary<string, int> enumMap;
Dictionary<int, string> reverseMap;
int len;
Table tbl;
foreach (string str in zf.Keys)
{
type = str.Substring(str.IndexOf("_") + 1);
type=type.Substring(0,type.Length-4);
doc = XMLCompressor.DecompressXMLDocument(new MemoryStream(zf[str]));
Logger.LogLine("Extracted xml data for type " + type);
t = Utility.LocateType(type);
if (t.IsEnum)
{
Logger.LogLine("Processing enum data into database...");
pool.Enums.WipeOutEnums(c);
enumMap = new Dictionary<string, int>();
reverseMap = new Dictionary<int, string>();
foreach (XmlNode node in doc.DocumentElement.ChildNodes)
{
pool.Enums.InsertToDB(t, int.Parse(node.Attributes["Value"].Value), node.Attributes["Name"].Value, c);
enumMap.Add(node.Attributes["Name"].Value, int.Parse(node.Attributes["Value"].Value));
reverseMap.Add(int.Parse(node.Attributes["Value"].Value), node.Attributes["Name"].Value);
}
pool.Enums.AssignMapValues(t, enumMap, reverseMap);
Logger.LogLine("Enum data has been imported.");
}
else
{
Logger.LogLine("Processing object data into database...");
c.DeleteAll(t);
sTable map = pool.Mapping[t];
List<string> extProps = new List<string>(map.ForeignTableProperties);
foreach (XmlNode node in doc.DocumentElement.ChildNodes)
{
tbl = (Table)t.GetConstructor(Type.EmptyTypes).Invoke(new object[] { });
foreach (XmlNode n in node.ChildNodes)
{
Logger.LogLine("Inner Field Value ("+n.Name+"): " + n.InnerXml);
PropertyInfo pi = t.GetProperty(n.Name, Utility._BINDING_FLAGS);
if (extProps.Contains(n.Name)){
Logger.LogLine("Processing external field...");
tbl.SetField(n.Name, ExtractTableValue(n,pi.PropertyType,pool));
}else{
try
{
Logger.LogLine("Processing internal field of the type "+(pi.PropertyType.IsArray ? pi.PropertyType.GetElementType() : pi.PropertyType).FullName+" ...");
if (XmlSerializer.FromTypes(new Type[] { (pi.PropertyType.IsArray ? pi.PropertyType.GetElementType() : pi.PropertyType) }).Length == 0)
Logger.LogLine("The field: " + n.Name + " has no xml seriliazer available.");
object obj = XmlSerializer.FromTypes(new Type[] { (pi.PropertyType.IsArray ? pi.PropertyType.GetElementType() : pi.PropertyType) })[0].Deserialize(new MemoryStream(System.Text.ASCIIEncoding.ASCII.GetBytes(n.InnerXml)));
if (obj == null)
Logger.LogLine("The field: " + n.Name + " is being delivered a null value.");
Logger.LogLine("Setting the field value for the field: " + n.Name);
tbl.SetField(n.Name, obj);
}
catch (Exception e)
{
Logger.LogLine(e);
throw e;
}
}
}
Logger.LogLine("Table data loaded from xml, saving to database...");
c.SaveWithAutogen(tbl);
}
Logger.LogLine("Object data has been imported.");
}
//force garbage collection to occur to prevent memory leaks
GC.Collect();
}
zf.Close();
c.Commit();
//reset all relationships and autogen fields
//pool.EnableRelationships(c);
//System.Threading.Thread.Sleep(500);
//c.Commit();
c.EnableAndResetAutogens();
System.Threading.Thread.Sleep(500);
c.Commit();
c.Disconnect();
pool.UnlockPoolPostBackupRestore();
return true;
}
public static bool BackupDataToStream(ConnectionPool pool, ref Stream outputStream)
{
Logger.LogLine("Locking down "+pool.ConnectionName+" database for backing up...");
Connection c = pool.LockDownForBackupRestore();
System.Threading.Thread.Sleep(500);
c.StartTransaction();
Logger.LogLine("Database locked down for backing up");
List<Type> types = pool.Mapping.Types;
List<Type> enums = new List<Type>();
List<Type> basicTypes = new List<Type>();
List<Type> complexTypes = new List<Type>();
sTable tbl;
Logger.LogLine("Loading all required types...");
foreach (Type t in types)
{
tbl = pool.Mapping[t];
foreach(sTableField fld in tbl.Fields)
{
if (fld.Type == Org.Reddragonit.Dbpro.Structure.Attributes.FieldType.ENUM)
{
PropertyInfo pi = t.GetProperty(fld.ClassProperty, Utility._BINDING_FLAGS);
if (!enums.Contains((pi.PropertyType.IsArray ? pi.PropertyType.GetElementType() : pi.PropertyType)))
enums.Add((pi.PropertyType.IsArray ? pi.PropertyType.GetElementType() : pi.PropertyType));
}
}
if (tbl.ForeignTableProperties.Length > 0)
{
if (!complexTypes.Contains(t))
recurAddRelatedTypes(ref basicTypes, ref complexTypes, tbl, t,pool);
}
else
{
if (!basicTypes.Contains(t))
basicTypes.Add(t);
}
}
//begin data dumping and outputting
ZipFile zf = new ZipFile(outputStream,false);
byte[] buff = new byte[1024];
XmlDocument doc;
XmlElement elem;
MemoryStream ms;
int len;
object obj;
int cnt = 0;
//output all enumerations
Logger.LogLine("Extracting enumerations for backup...");
foreach (Type t in enums)
{
doc = new XmlDocument();
elem = doc.CreateElement("enums");
doc.AppendChild(elem);
foreach (string str in Enum.GetNames(t))
{
elem = doc.CreateElement("enum");
elem.Attributes.Append(CreateAttributeWithValue(doc, "Name", str));
elem.Attributes.Append(CreateAttributeWithValue(doc,"Value",pool.GetEnumID(t,str).ToString()));
doc.DocumentElement.AppendChild(elem);
}
zf.AppendFile(cnt.ToString("0000000") + "_" + t.FullName + ".xml", XMLCompressor.CompressXMLDocument(doc));
cnt++;
}
//output all basic types
Logger.LogLine("Backing up the basic types for database...");
foreach (Type t in basicTypes)
{
Logger.LogLine("Backing up basic type: " + t.FullName);
doc = new XmlDocument();
elem = doc.CreateElement("entries");
doc.AppendChild(elem);
tbl = pool.Mapping[t];
Logger.LogLine("Extracting basic type: " + t.FullName + " from the database and writing it to the xml document.");
foreach (Table table in c.SelectAll(t))
{
elem = doc.CreateElement("entry");
foreach (string str in tbl.Properties)
{
obj = table.GetField(str);
if (obj != null)
elem.AppendChild(CreateElementWithValue(doc, str, obj));
}
doc.DocumentElement.AppendChild(elem);
}
Logger.LogLine("Compressing basic type: " + t.FullName + " data and appending it into the zip file.");
zf.AppendFile(cnt.ToString("0000000") + "_" + t.FullName + ".xml", XMLCompressor.CompressXMLDocument(doc));
cnt++;
c.ResetConnection(false);
}
//output all complex types
Logger.LogLine("Backing up complex types for database...");
foreach (Type t in complexTypes)
{
Logger.LogLine("Backing up complex type: " + t.FullName);
doc = new XmlDocument();
elem = doc.CreateElement("entries");
doc.AppendChild(elem);
tbl = pool.Mapping[t];
Logger.LogLine("Extracting complex type: " + t.FullName + " from the database and writing it to the xml document.");
foreach (Table table in c.SelectAll(t))
{
elem = doc.CreateElement("entry");
foreach (string str in tbl.Properties)
{
obj = table.GetField(str);
if (obj != null)
{
if (tbl.GetRelationForProperty(str).HasValue)
{
PropertyInfo pi = t.GetProperty(str, Utility._BINDING_FLAGS);
if (pi.PropertyType.IsArray)
{
elem.AppendChild(doc.CreateElement(str));
foreach (object o in (Array)obj)
{
elem.ChildNodes[elem.ChildNodes.Count - 1].AppendChild(CreateRealtedXMLElement((Table)o, doc, "child",pool));
}
}else
elem.AppendChild(CreateRealtedXMLElement((Table)obj, doc,str,pool));
}else
elem.AppendChild(CreateElementWithValue(doc, str, obj));
}
}
doc.DocumentElement.AppendChild(elem);
}
Logger.LogLine("Compressing complex type: " + t.FullName + " data and appending it into the zip file.");
zf.AppendFile(cnt.ToString("0000000") + "_" + t.FullName + ".xml", XMLCompressor.CompressXMLDocument(doc));
cnt++;
c.ResetConnection(false);
}
zf.Flush();
zf.Close();
c.Reset();
Logger.LogLine("Backup of database complete, re-enabling pool.");
c.Disconnect();
pool.UnlockPoolPostBackupRestore();
return true;
}
