/// <summary>
/// Initializing Root Node
/// </summary>
/// <param name="DBreezeTableName">Real table name in DBreeze, that will hold the structure, must be synchronized with other tables in transaction</param>
/// <param name="tran"></param>
/// <param name="maximalInsertSpeed">will use DBreeze Technical_SetTable_OverwriteIsNotAllowed among transaction for DBreezeTableName</param>
public DataAsTree(string DBreezeTableName, DBreeze.Transactions.Transaction tran, bool maximalInsertSpeed = false)
{
if (tran == null)
throw new Exception("Transaction is null");
if (RootNode != null)
throw new Exception("Can't be more then one root node, use other constructor");
//Setting up RootNode
this.RootNode = this;
this.Transaction = tran;
this.maximalInsertSpeed = maximalInsertSpeed;
this.DBreezeTableName = DBreezeTableName;
this.NodeId = 0;
this.ParentNodeId = 0;
}
/// <summary>
/// Internal
/// </summary>
/// <param name="row"></param>
/// <returns></returns>
DataAsTree SetupNodeFromRow(DBreeze.DataTypes.Row<byte[], byte[]> row)
{
DataAsTree node = null;
byte[] val = row.Value;
/*
Protocol:
1byte - protocol version (starting from 1)
...
than due to the protocol description
*/
node = new DataAsTree();
switch (val[0])
{
case 1: //First protocol type
/*
Protocol:
1byte - protocol version (starting from 1)
16bytes link to content (or 0)
1byte - lenght of NodeName
Nbytes - Name
*/
if ((val[1] | val[2] | val[3] | val[4] | val[5] | val[6] | val[7] | val[8]) != 0)
{
//We got content
node.ContentRef = val.Substring(1, 16);
}
node.NodeName = System.Text.Encoding.UTF8.GetString(val.Substring(18, val[17]));
break;
}
node.ParentNodeId = row.Key.Substring(0, 8).To_Int64_BigEndian();
node.NodeId = row.Key.Substring(8, 8).To_Int64_BigEndian();
CopyInternals(node);
return node;
}
private void TEST_START_WITH_insert(DBreeze.Transactions.Transaction tran, int tro,int din)
{
string tn = "Tro" + tro.ToString() + "/Din" + din.ToString() + "/Year";
tran.Insert<int, int>(tn, 1, 1);
tran.Commit();
}
private void TEST_START_WITH_insert1(DBreeze.Transactions.Transaction tran, string tn)
{
tran.Insert<int, int>(tn, 1, 1);
tran.Commit();
}
/// <summary>
/// Function to be used inside of internal transaction
/// </summary>
/// <param name="tran"></param>
/// <param name="documentSpace"></param>
/// <returns></returns>
public long InTran_GetDocumentSpaceId(DBreeze.Transactions.Transaction tran, string documentSpace)
{
var mt = tran.SelectTable<int>(DocumentsStorageTablesPrefix + "m", 1, 0);
var docSpaceId = mt.Select<string, long>(documentSpace).Value;
return docSpaceId;
}
private void MATRIX_BUILD_RECURSE(int q, int xgl, byte[] parent,DBreeze.Transactions.Transaction tran)
{
if (xgl > BM_deep)
return;
xgl++;
byte[] actual = parent;
for (int i = 0; i < BM_rowlen; i++)
{
BM_count++;
actual = parent.Concat(new byte[] { (byte)i });
if(BM_console_out_build)
Console.WriteLine(actual.ToBytesString(""));
tran.Insert<byte[], byte?>("t1", actual, null);
MATRIX_BUILD_RECURSE(i, xgl, actual,tran);
}
}
/// <summary>
///
/// </summary>
/// <param name="_tran"></param>
/// <param name="_DocumentsStorageTablesPrefix"></param>
public InTran_DocumentAppender(DBreeze.Transactions.Transaction _tran, string _DocumentsStorageTablesPrefix)
{
if(_tran == null)
throw new Exception("DocumentAppender transaction is null");
tran = _tran;
//documentSpaceId = _documentSpaceId;
DocumentsStorageTablesPrefix = _DocumentsStorageTablesPrefix;
}
/// <summary>
///
/// </summary>
/// <param name="includeContent"></param>
/// <param name="includeSearchables"></param>
/// <param name="dt"></param>
/// <param name="docRow"></param>
/// <returns></returns>
Document RetrieveDocument(bool includeContent, bool includeSearchables, DBreeze.DataTypes.NestedTable dt, DBreeze.DataTypes.Row<int,byte[]> docRow)
{
byte[] btDoc = docRow.Value;
Document doc = null;
if (btDoc[0] == 0)
{
//Non compressed
doc = btDoc.Substring(1).DeserializeProtobuf<Document>();
}
else
{
doc = btDoc.Substring(1).DecompressGZip().DeserializeProtobuf<Document>();
}
if (includeContent && doc.Content != null)
{
//16 bytes link to Content
doc.Content = dt.SelectDataBlock(doc.Content);
}
if (includeSearchables && doc.InternalStructure != null)
{
byte[] btSearchables = dt.SelectDataBlock(doc.InternalStructure);
if (btSearchables[0] == 1)
{
//Zipped
btSearchables = btSearchables.Substring(1).DecompressGZip();
}
else
btSearchables = btSearchables.Substring(1);
doc.Searchables = System.Text.Encoding.UTF8.GetString(btSearchables);
}
doc.DocumentSequentialId = docRow.Key;
return doc;
}
/// <summary>
///
/// </summary>
/// <param name="docSpaceId"></param>
/// <param name="internalId"></param>
/// <param name="tran"></param>
void RemoveDocumentInternal(long docSpaceId, int internalId, string externalId, DBreeze.Transactions.Transaction tran)
{
string docTable = DocumentsStorageTablesPrefix + "d" + docSpaceId.ToString();
tran.SynchronizeTables(docTable, DocumentsStorageTablesPrefix + "p");
//Getting document using internalID
var dt = tran.InsertTable<int>(docTable, 1, 0); //document table
var vt = tran.InsertTable<int>(docTable, 3, 0); //Version table Key
vt.ValuesLazyLoadingIsOn = false;
if (!String.IsNullOrEmpty(externalId)) //Getting internalId via external
{
var et = tran.InsertTable<int>(docTable, 2, 0); //ExternalId to InternalId relation
internalId = et.Select<string, int>(externalId).Value;
}
if (internalId == 0)
return; //No such document
//Iterating through all versions of the document
foreach (var vtRow in vt.SelectBackwardFromTo<byte[], byte>
(
internalId.To_4_bytes_array_BigEndian().ConcatMany(int.MaxValue.To_4_bytes_array_BigEndian(), int.MaxValue.To_4_bytes_array_BigEndian()), true,
internalId.To_4_bytes_array_BigEndian().ConcatMany(int.MinValue.To_4_bytes_array_BigEndian(), int.MinValue.To_4_bytes_array_BigEndian()), true
, true
))
{
if (vtRow.Value == 0)
{
//Including the last one into processing list with the value 1 (to be deleted)
tran.Insert<byte[], byte>(DocumentsStorageTablesPrefix + "p", docSpaceId.To_8_bytes_array_BigEndian().Concat(vtRow.Key.Substring(8, 4)), 1);
}
break;
}
}
/// <summary>
///
/// </summary>
/// <param name="internalId"></param>
/// <returns></returns>
void GetListOfDocumentVersionsInternal(long docSpaceId, int internalId, DBreeze.Transactions.Transaction tran, List<int> res)
{
string DocTableName = DocumentsStorageTablesPrefix + "d" + docSpaceId.ToString();
var vt = tran.SelectTable<int>(DocTableName, 3, 0);
foreach (var row in vt.SelectForwardFromTo<byte[], byte>(
internalId.To_4_bytes_array_BigEndian().ConcatMany(int.MinValue.To_4_bytes_array_BigEndian(), int.MinValue.To_4_bytes_array_BigEndian()), true,
internalId.To_4_bytes_array_BigEndian().ConcatMany(int.MaxValue.To_4_bytes_array_BigEndian(), int.MaxValue.To_4_bytes_array_BigEndian()), true
))
{
res.Add(row.Key.Substring(8,4).To_Int32_BigEndian());
}
}
/// <summary>
///
/// </summary>
/// <param name="docSpaceId"></param>
/// <param name="internalId"></param>
/// <param name="includeContent"></param>
/// <param name="includeSearchables"></param>
/// <param name="tran"></param>
/// <returns></returns>
Document GetDocById(long docSpaceId, int internalId, bool includeContent, bool includeSearchables, DBreeze.Transactions.Transaction tran)
{
try
{
if (docSpaceId < 1 || internalId < 1)
return null; //No such document
string docTable = DocumentsStorageTablesPrefix + "d" + docSpaceId.ToString();
//Getting latest document correct version
string DocTableName = DocumentsStorageTablesPrefix + "d" + docSpaceId.ToString();
var vt = tran.SelectTable<int>(DocTableName, 3, 0);
int sequentialId = 0;
foreach (var row1 in vt.SelectBackwardFromTo<byte[], byte>(
internalId.To_4_bytes_array_BigEndian().ConcatMany(int.MaxValue.To_4_bytes_array_BigEndian(), int.MaxValue.To_4_bytes_array_BigEndian()), true,
internalId.To_4_bytes_array_BigEndian().ConcatMany(int.MinValue.To_4_bytes_array_BigEndian(), int.MinValue.To_4_bytes_array_BigEndian()), true
))
{
if (row1.Value == 1) //Document is completely deleted
break;
//Getting the latest version of the document index
sequentialId = row1.Key.Substring(8, 4).To_Int32_BigEndian();
break;
}
if (sequentialId == 0)
return null; //Probably Doc is deleted
//Getting document using internalID
var dt = tran.SelectTable<int>(docTable, 1, 0); //document table
dt.ValuesLazyLoadingIsOn = false;
var row = dt.Select<int, byte[]>(sequentialId);
if (!row.Exists)
return null; //No such document
return RetrieveDocument(includeContent, includeSearchables, dt, row);
}
catch (Exception ex)
{
throw ex;
}
}
