export( String treeName,
DatabaseInterface dbConnection) {
///////////////////////////////////////
MemoryStream XmlCompressedStream = new MemoryStream();
try {
Albero treeToExport = dbConnection.getAlbero(treeName);
XmlCompressedStream = FileEngine.assembleXML(treeToExport);
} catch (Exception dbError) {
Console.WriteLine(dbError.Message);
return null;
}
return XmlCompressedStream;
} // End of method export()
create
(String treeName,
String treeType,
String[] buildingParameters,
Dictionary <String, String[]> nodeAttrList,
Dictionary <String, String[]> edgeAttrList)
{
///////////////////////////////////////////////////////////////////////
/*
* Il parametro buildingParameters e' un array di stringhe ciascuna
* contenente un'informazione utile alla costruzione del generico
* grafo, in questo caso "splitSize" e "depth" per determinare la
* struttura dell'albero. I dizionari devono essere cosi impiegati:
* Dictionary<String -> NomeAttributo, String[] -> ParametriAddizionali
* Nello specifico:
* <String[0] -> Tipo, String[1] -> RegolaGenerazione
* Tipo := "string", "numeric"
* RegolaGenerazione := "string", "random"
* Nota: la regola di generazione random e' acquisita inserendo un dash
* per indicare l'intervallo K-N (e.g. "17-244" ).
*/
int splitSize = int.Parse(buildingParameters[0]);
int depth = int.Parse(buildingParameters[1]);
Albero tree = new Albero(treeName, treeType, splitSize, depth, nodeAttrList, edgeAttrList);
/*** buildingParameters[0] = splitSize; buildingParameters[1] = depth; ***/
MemoryStream XmlCompressedStream = new MemoryStream();
XmlCompressedStream = FileEngine.assembleXML(tree);
/* * * * * * * * * * * * * * * * * * * * * * * * * * *
* ATTENZIONE: Chiusura del writer, cleanup finale
* da effettuare nel Main(), dopo l'invio dello stream
* al client!
*
* XmlStream.Close();
* XmlStream.Dispose();
* * * * * * * * * * * * * * * * * * * * * * * * * * */
return(XmlCompressedStream);
} // End of method create()
import( MemoryStream XmlCompressedStream,
DatabaseInterface dbConnection ) {
///////////////////////////////////////////////
int success = 0;
int failure = 1;
Albero treeToImport = FileEngine.parseXML(XmlCompressedStream);
// Console.WriteLine(treeToImport.nome);
if (!Convert.ToBoolean(dbConnection.storeAlbero(treeToImport))) {
return success;
} else {
return failure;
}
/*DatabaseInterface db = new DatabaseInterface("local", null,null);
Dictionary<String, String[]> vertexAttrib = new Dictionary<string, string[]>();
vertexAttrib.Add("Altezza", new String[]{"string", "primoValore"});
vertexAttrib.Add ("Peso", new String[]{"numeric", "1"});
Albero a = new Albero("enzo4", "Triste", 3, 2, vertexAttrib, vertexAttrib);
db.storeAlbero(a);*/
} // End of method import()
/*___________________________________________________________________________________________________*/
public void HandleClient(object obj)
{
TcpClient client = (TcpClient)obj;
StreamWriter sWriter = new StreamWriter(client.GetStream(), Encoding.UTF8);
StreamReader sReader = new StreamReader(client.GetStream(), Encoding.UTF8);
Boolean bClientConnected = true;
String[] dbCred = sReader.ReadLine().Split('$');
DatabaseInterface dbInter = new DatabaseInterface(dbCred[0], dbCred[1], dbCred[2]);
String check_auth = dbInter.check().ToString();
sWriter.WriteLine(check_auth);
sWriter.Flush();
/*Connessione al database fallita*/
if (check_auth.Equals("1"))
{
client.Close();
return;
}
/*Connessione al database andata a buon fine*/
/*Prendiamo i dati dal database*/
/*Dobbiamo separare i dati contenuti in infoAlbero[] in lista alberi con relativi attributi (Divisi tra
* vertex ed edge)*/
/*NomeAlbero#attr1Vertex?tipo:attr2Vertex?tipo#attrEdge?tipo:attrEdge2?tipo$NomeAlbero2#etc*/
InfoAlbero[] infoAlbero = dbInter.getListaAlberi();
if (infoAlbero.Length == 0)
{
sWriter.WriteLine("Vuoto");
sWriter.Flush();
}
else
{
//Console.WriteLine(parametersParser(dbInter.getListaAlberi()));
sWriter.WriteLine(parametersParser(infoAlbero));
sWriter.Flush();
}
/*Dobbiamo spedire la attribute definitions*/
Dictionary <String, String> attributeDefinition = dbInter.getAttributeDefinition();
/*foreach (KeyValuePair<String, String> val in attributeDefinition)
* {
* Console.WriteLine(val);
* }*/
//Console.WriteLine(parametersParser(attributeDefinition));
sWriter.WriteLine(parametersParser(attributeDefinition));
sWriter.Flush();
String response = "";
/*_____Inizio scelta funzioni in base all'operazione scelta__________________________________________________*/
NetworkStream netStr = client.GetStream();
TreeLogicEngine engine = new TreeLogicEngine();
while (bClientConnected)
{
response = sReader.ReadLine();
if (response.Equals("Return"))
{
continue;
}
switch (response)
{
/******************IMPORTA FILE*****************************/
case "Importa":
sWriter.WriteLine("Importa");
sWriter.Flush();
/*Leggiamo la dimensione del file da leggere*/
response = sReader.ReadLine();
if (response.Equals("Return"))
{
break;
}
int length = int.Parse(response);
//Console.WriteLine(length);
byte[] file = new byte[length];
netStr.Read(file, 0, length);
//Console.WriteLine(file.Length);
MemoryStream stream = new MemoryStream(file);
/* public static int import(MemoryStream XmlStream, DatabaseInterface DbConnection);*/
sWriter.WriteLine(FileEngine.import(stream, dbInter).ToString());
sWriter.Flush();
break;
/******************ESPORTA FILE*****************************/
case "Esporta":
sWriter.WriteLine("Esporta");
sWriter.Flush();
response = sReader.ReadLine();
if (response.Equals("Return"))
{
break;
}
/*public static MemoryStream export(String treeName, DatabaseInterface DbConnection);*/
//byte[] fileXml = File.ReadAllBytes("Tree.xml");
byte[] fileXml = FileEngine.export(response, dbInter).ToArray();
sWriter.WriteLine(fileXml.Length.ToString());
sWriter.Flush();
netStr.Write(fileXml, 0, fileXml.Length);
break;
/******************CREA ALBERO*****************************/
case "Crea":
sWriter.WriteLine("Crea");
sWriter.Flush();
String[] NomTipSplitDepth = new String[4];
String[] SplitDept = new String[2];
//Nome$Tipo$Splitsize$Depth
response = sReader.ReadLine();
if (response.Equals("Return"))
{
break;
}
NomTipSplitDepth = response.Split('$');
SplitDept[0] = NomTipSplitDepth[2];
SplitDept[1] = NomTipSplitDepth[3];
//NomeAttrVertex1#tipoAttr:valore$NomeAttrVertex2#tipoAttr2:valore2$etc
response = sReader.ReadLine();
if (response.Equals("Return"))
{
break;
}
Dictionary <String, String[]> vertexAttrList = parametersParser(response);
//NomeAttrEdge1#tipoAttr:valore$NomeAttrEdge2#tipoAttr2:valore2$etc
response = sReader.ReadLine();
if (response.Equals("Return"))
{
break;
}
Dictionary <String, String[]> edgeAttrList = parametersParser(response);
//byte[] fileX = File.ReadAllBytes("Tree.xml");
byte[] fileX = engine.create(NomTipSplitDepth[0], NomTipSplitDepth[1], SplitDept, vertexAttrList, edgeAttrList).ToArray();
sWriter.WriteLine(fileX.Length.ToString());
sWriter.Flush();
netStr.Write(fileX, 0, fileX.Length);
break;
/******************MODIFICA ALBERO*****************************/
case "Modifica":
/* int edit(String graphName,int startNode,int endNode, Dictionary<String, String> newNodeAttrList, Dictionary<String, String> newEdgeAttrList, DatabaseInterface dbConnection);*/
sWriter.WriteLine("Modifica");
sWriter.Flush();
infoAlbero = dbInter.getListaAlberi();
if (infoAlbero.Length == 0)
{
sWriter.WriteLine("Vuoto");
sWriter.Flush();
}
else
{
//Console.WriteLine(parametersParser(dbInter.getListaAlberi()));
/*NomeAlbero#attr1Vertex?tipo:attr2Vertex?tipo#attrEdge?tipo:attrEdge2?tipo$NomeAlbero2#etc*/
sWriter.WriteLine(parametersParser(infoAlbero));
sWriter.Flush();
}
response = sReader.ReadLine();
if (response.Equals("Return"))
{
break;
}
String[] nomeInizFin = response.Split('$');
response = sReader.ReadLine();
String newAttrVertex = response;
if (response.Equals("Return"))
{
break;
}
Dictionary <String, String> newNodeAttrList = paramParser(response);
response = sReader.ReadLine();
String newAttrEdge = response;
if (response.Equals("Return"))
{
break;
}
Dictionary <String, String> newEdgeAttrList = paramParser(response);
sWriter.WriteLine(engine.edit(nomeInizFin[0], int.Parse(nomeInizFin[1]), int.Parse(nomeInizFin[2]), newNodeAttrList, newEdgeAttrList, dbInter).ToString());
sWriter.Flush();
break;
/******************CALCOLA ALBERO*****************************/
case "Calcola":
sWriter.WriteLine("Calcola");
sWriter.Flush();
attributeDefinition = dbInter.getAttributeDefinition();
infoAlbero = dbInter.getListaAlberi();
if (infoAlbero.Length == 0)
{
sWriter.WriteLine("Vuoto");
sWriter.Flush();
}
else
{
//Console.WriteLine(parametersParser(dbInter.getListaAlberi()));
/*NomeAlbero#attr1Vertex?tipo:attr2Vertex?tipo#attrEdge?tipo:attrEdge2?tipo$NomeAlbero2#etc*/
sWriter.WriteLine(parametersParser(infoAlbero));
sWriter.Flush();
}
response = sReader.ReadLine();
if (response.Equals("Return"))
{
break;
}
String[] nif = response.Split('$');
response = sReader.ReadLine();
if (response.Equals("Return"))
{
break;
}
String[] vertAttr = response.Split('$');
response = sReader.ReadLine();
if (response.Equals("Return"))
{
break;
}
String[] edgAttr = response.Split('$');
/*long calculate(int startNode, int endNode, String treeName, Dictionayr<String, String> edgeAttrList, Dictionary<String, String> vertexAttrList, DatabaseInterface dbInterface)*/
Dictionary <String, String> edgeAttr = getAttrType(edgAttr, attributeDefinition);
Dictionary <String, String> vertexAttr = getAttrType(vertAttr, attributeDefinition);
sWriter.WriteLine(engine.calculate(int.Parse(nif[1]), int.Parse(nif[2]), nif[0], edgeAttr, vertexAttr, dbInter).ToString());
sWriter.Flush();
break;
case "Disconnect":
bClientConnected = false;
break;
default:
Console.WriteLine("Errore...");
bClientConnected = false;
break;
} //Fine switch
} //Fine while
client.Close();
}//Fine HandleClient
parseXML( MemoryStream XmlCompressedStream ) {
////////////////////////////////////////////////////
MemoryStream XmlDecompressedStream = new MemoryStream();
XmlDecompressedStream = Exflator.decompress(XmlCompressedStream);
/*** Rimozione dall'heap degli oggetti oramai non più utili ***/
XmlCompressedStream.Close();
XmlCompressedStream.Dispose();
XmlDecompressedStream.Position = 0;
XmlReader reader = XmlReader.Create(XmlDecompressedStream);
/*
/*** Controllo se il file XML contiene un albero ***
while (reader.Read()) {
if (reader.NodeType == XmlNodeType.Element) {
switch(reader.Name) {
case "tree":
break;
case "header":
return null;
}
}
}
*/
/*** Analisi del custom XML header ***/
/*** Strutture ed oggetti che verranno riempiti per costruire l'albero ***/
String treeName = "";
String treeType = "";
int treeSplit = 0;
int treeDepth = 0;
Dictionary<String, String[]> nodeAttributeList = new Dictionary<String, String[]>();
Dictionary<String, String[]> edgeAttributeList = new Dictionary<String, String[]>();
/*** Finchè non si raggiunge la treeDepth non si e' conclusa l'analisi dell'header ***/
bool EndOfTreeInfo = false;
while (reader.Read() && !EndOfTreeInfo) {
if (reader.NodeType == XmlNodeType.Element) {
switch(reader.Name) {
case "treeName":
while (reader.Read()) {
if (reader.NodeType == XmlNodeType.Text) {
treeName = reader.Value;
break;
}
}
break;
case "treeType":
while (reader.Read()) {
if (reader.NodeType == XmlNodeType.Text) {
treeType = reader.Value;
break;
}
}
break;
case "treeSplit":
while (reader.Read()) {
if (reader.NodeType == XmlNodeType.Text) {
treeSplit = Int32.Parse(reader.Value);
break;
}
}
break;
case "treeDepth":
while (reader.Read()) {
if (reader.NodeType == XmlNodeType.Text) {
treeDepth = Int32.Parse(reader.Value);
EndOfTreeInfo = true;
break;
}
}
break;
}
}
}
nodeAttributeList = FileEngine.nodeAttrParser(XmlDecompressedStream);
edgeAttributeList = FileEngine.edgeAttrParser(XmlDecompressedStream);
Albero Tree = new Albero(treeName, treeType, treeSplit, treeDepth, nodeAttributeList, edgeAttributeList);
/*** Analisi dell'XML elementTable ***/
restoreValues(Tree, XmlDecompressedStream);
return Tree;
} // End of method parseXML()
assembleXML( Albero Tree ) {
///////////////////////////////////
/*** Settaggio impostazioni XmlWriter ***/
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
settings.IndentChars = ("\t");
settings.Encoding = System.Text.Encoding.UTF8;
settings.NewLineChars = Environment.NewLine;
settings.NewLineHandling = NewLineHandling.Replace;
settings.OmitXmlDeclaration = false;
MemoryStream XmlStream = new MemoryStream();
XmlWriter writer = XmlWriter.Create(XmlStream, settings);
/*** Inizio scrittura del codice XML ***/
String depth = Convert.ToString(Tree.depth);
String splitSize = Convert.ToString(Tree.splitSize);
writer.WriteStartDocument();
writer.WriteStartElement("tree");
writer.WriteStartElement("header");
writer.WriteElementString("treeName", Tree.nome);
writer.WriteElementString("treeType", Tree.tipo);
writer.WriteElementString("treeSplit", splitSize);
writer.WriteElementString("treeDepth", depth);
writer.WriteStartElement("treeNodeAttributeList");
foreach (KeyValuePair<String, String[]> pair in Tree.VertexAttributeList) {
writer.WriteStartElement("treeNodeAttribute");
writer.WriteElementString("treeNodeAttrName", pair.Key.ToString());
writer.WriteElementString("treeNodeAttrType", pair.Value[0].ToString());
writer.WriteElementString("treeNodeAttrGenRule", pair.Value[1].ToString());
writer.WriteEndElement();
}
writer.WriteEndElement();
writer.WriteStartElement("treeEdgeAttributeList");
foreach (KeyValuePair<String, String[]> pair in Tree.EdgeAttributeList) {
writer.WriteStartElement("treeEdgeAttribute");
writer.WriteElementString("treeEdgeAttrName", pair.Key.ToString());
writer.WriteElementString("treeEdgeAttrType", pair.Value[0].ToString());
writer.WriteElementString("treeEdgeAttrGenRule", pair.Value[1].ToString());
writer.WriteEndElement();
}
writer.WriteEndElement();
/*** Chiusura di header ***/
writer.WriteEndElement();
writer.WriteStartElement("elementTable");
FileEngine.XmlTraversal(writer, Tree);
/*** Chiusura di elementTable ***/
writer.WriteEndElement();
/*** Chiusura di tree ***/
writer.WriteEndElement();
writer.WriteEndDocument();
writer.Flush();
MemoryStream XmlCompressedStream = new MemoryStream();
XmlCompressedStream = Exflator.compress(XmlStream);
XmlStream.Close();
XmlStream.Dispose();
return XmlCompressedStream;
} // End of method assembleXML()
