public DbSlc(Reach smb)
{
Db db = new Db(new ctx().DbDrivers);
init();
DbSlc ret = new DbGrid(smb.before(-1, ".SL")).SLC;
smb = smb.after(-1, ".SL");
if (smb.startsWith("D"))
{
ret = ret.DST;
}
smb = smb.from(3);
while (smb.len > 0)
{
if (smb.startsWith("DST"))
{
ret = ret.DST; smb = smb.from(5); continue;
}
if (smb.startsWith("TOP("))
{
ret = ret.TOP(long.Parse(smb.from(5).before(1, ")").text)); smb = smb.after(1, ")").from(2); continue;
}
if (smb.startsWith("ORD("))
{
ret = ret.ORD(smb.from(5).before(1, ")").after(1, "\"").before(1, "\"").text); smb = smb.after(1, ")").from(2); continue;
}
}
this.count = ret.count;
this.fields = ret.fields.Clone(); //new Pile<string>(ret.fieldNames);
this.from = new KeyPile <string, string>(ret.from);
this.join = ret.join.Clone(); //new Pile<Cnd>(ret.join);
this.where = ret.where.Clone(); //new Pile<Cnd>(ret.where);
this.order = ret.order;
}
private DbGrid(string type, DbGrid s1, DbGrid s2)
{
init();
this.type = type.ToUpper().Substring(0, 1);
parts.Push(s1);
parts.Push(s2);
if ((parts[1].db != null) && (parts[2].db != null))
{
if (parts[1].db != parts[2].db)
{
throw new Exception("Unable to merge grids from different data sources in INTERSECT or EXCEPT or UNION");
}
}
if ((parts[1].db == null) || (parts[2].db == null))
{
if (parts[2].db == null)
{
this.db = parts[1].db;
}
else
{
this.db = parts[2].db;
} parts[1].db = this.db; parts[2].db = this.db;
}
}
/// <summary> sR ("select Rows") extends the WHERE clause with addinitional AND condition(s).</summary>
public DbGrid sR(params DbCnd[] restrictions)
{
DbGrid ret = new DbGrid(this);
ret.allFields = ret.fields.Clone(); //new Pile<string> (ret.fieldNames);
ret.selCnd.Add(restrictions);
return(ret);
}
internal DbIns(Reach smb)
{
init();
//TBD
Db db = new Db(new ctx().DbDrivers);
DbIns ret = null;
Zone bktFilter = new Zone(new Pile <string>(), new Pile <string>("", true, "(", ")", "||:0"));
Zone strFilter = new Zone(new Pile <string>(), new Pile <string>("", true, "\"", "\"", "||:1"));
/*
* string insstr = "Grid(\"prdrln\").sC(\"sbj, obj, vb, rul, steps, excerpt, trust\").INS(XXXX)";
* insstr = insstr.Replace("XXXX", "Grid(\"prdrln p1, prdvrb pv1, prdrln p2, prdvrb pv2, kndrln sc, itmrln si, prdvrb pv, prdrul pr, itmrln oi, kndrln oc\", cd(\"p1.obj\").EQ(\"p2.sbj\")).sC(\"si.id, oi.id, pv.id, pr.id, 0, '', 0.5\").sR(XXXX).SLD");
* insstr = insstr.Replace("XXXX", "cd(\"0\").EQ(Grid(\"prdrln prdrln\").sC(\"count(*)\").sR(cd(\"sbj\").EQ(\"si.id\"), cd(\"obj\").EQ(\"oi.id\"), cd(\"vb\").EQ(\"pr.vb\")).SLC ), XXXX");
* insstr = bktFilter.on(insstr).text;
* insstr = insstr.Replace("XXXX", "cd(\"0\").EQ(Grid(\"prdrln prdrln\").sC(\"count(*)\").sR(cd(\"sbj\").EQ(\"si.id\"), cd(\"obj\").EQ(\"oi.id\"), cd(\"vb\").EQ(\"pr.vb\")).SLC ), XXXX");
*/
Reach gridDef = smb - bktFilter.on(smb);
Reach ins = gridDef.at(".INS(");
if (ins.len == 0)
{
throw new Exception("DbIns Constructor: invalid symbolic Definition");
}
DbGrid res = db.Grid(smb.before(ins));
smb = smb.after(ins).before(-1, ")");
if (smb.startsWith("Grid("))
{
ret = res.INS(new DbSlc(smb));
}
else
{
Pile <string> val = new Pile <string>();
while (smb.len > 0)
{
if (smb.startsWith("ds("))
{
val.Push(db.ds(smb.after(1, "\"").before(1, "\""))); smb = smb.after(1, "),").Trim();
}
else
{
val.Push(smb.before(1, ",").Trim()); smb = smb.after(1, ",").Trim();
}
}
ret = res.INS(val.array());
}
into = ret.into;
fields = ret.fields.Clone(); //new Pile<string>(ret.fieldNames);
values = ret.values;
slc = ret.slc;
}
public DbGrid sC(params DbField[] fields)
{
DbGrid ret = new DbGrid(this);
ret.fields = new Pile <DbField>();
foreach (DbField fld in fields)
{
ret.fields.Add(fld);
}
ret.allFields = ret.fields;
//if (!fields.Trim().Equals("*")) { ret.fieldNames.clear(); ret.fieldTypes.clear(); while (fields.Trim().Length > 0) { ret.fieldTypes.Add(""); ret.fieldNames.Add(utl.cutl(ref fields, ",").Trim()); } } //AttGeTr: no type information is added for each field !!! / ToBeSolved !!!
return(ret);
}
//public Pile<DbObject> dbrGetAll() {Pile<DbObject> ret = new Pile<DbObject>(); foreach(Pile<Reach> row in db.exec(bscTbl.SELECT).Rows) ret.Push(row2Instance(row)); return ret; }
public DbObj(DbGrid bscTbl, DbGrid vrbTbl)
{
init();
//rows.Push(this);
this.bscTbl = bscTbl;
this.vrbTbl = vrbTbl;
this.db = bscTbl.Db;
if (this.db == null)
{
this.db = vrbTbl.Db;
}
bscTbl.Db = this.db;
vrbTbl.Db = this.db;
isDirty = false;
}
public DbSlc(DbGrid g)
{
init();
if (g.type.Length == 0)
{
init(g.Fields, g.From, g.Join, g.Where);
//string sql = Db._sql(this);
}
else
{
type = g.type;
parts.Push(new DbSlc(g.parts[1]));
parts.Push(new DbSlc(g.parts[2]));
}
}
public void addTables(string tables)
{
tables = tables.Trim();
while (tables.Length > 0)
{
string tableShort = utl.cutl(ref tables, ",").Trim().ToLower();
tables = tables.Trim();
string tableName = utl.cutl(ref tableShort, " ").Trim().ToLower();
if (tableShort.Length == 0)
{
tableShort = tableName;
}
//if ((this.tables.Len() == 0) && (tables.Length == 0)) {this.Name = tableName; this.Short = tableShort; return; }
if (currentState() == 0) // state is "empty", this DbGrid does not even contain a single table ...
{
Name = tableName;
Short = tableShort;
//dbdb if (db.Tables.hasKey(Name)) fields = new KeyPile<string, string>(db.Tables[Name].fields);
for (int i = 1; i <= fields.Len; i++)
{
fields[i] = new DbField(Short + "." + fields[i].sql());
}
}
else
{
DbGrid g = new DbGrid(this);
if (currentState() == 1)
{
this.tables.Add(Name + " " + Short, new DbGrid(this));
}
this.tables.Add(tableName + " " + tableShort, new DbGrid(tableName + " " + tableShort));
Name = "";
Short = "";
fields = new Pile <DbField>();
foreach (DbGrid tab in this.tables)
{
foreach (DbField x in tab.Fields)
{
fields.Add(new DbField(tab.Short + "." + x.sql()));
}
}
}
}
}
// Ideen:
// Eine Projektion aus joined Tables könnte etwa so definiert werden ......
// Join jtb = new Join("mitarbeiter m, ProcessInstance pi", "m.Id = pi.mitarbeiter");
// Projection pjtb = jtb.Project("m.Id, m.nm, m.vorname, pi.nm, pi.Id, pi.StarDate");
// pjtb.Select(true, "m.Id > 200", "m.nm LIKE '*Stefan*'");
internal DbGrid(DbGrid cloneFrom)
{
init();
db = cloneFrom.db;
fields = cloneFrom.fields.Clone(); if (cloneFrom.allFields == cloneFrom.fields)
{
allFields = fields;
}
else if (cloneFrom.allFields != null)
{
allFields = cloneFrom.allFields.Clone();
}
tables = new KeyPile <string, DbGrid>(cloneFrom.tables);
joinCnd = cloneFrom.joinCnd.Clone(); // new Pile<Cnd>(cloneFrom.joinCnd);
selCnd = cloneFrom.selCnd.Clone(); // new Pile<Cnd>(cloneFrom.selCnd);
Name = cloneFrom.Name;
Short = cloneFrom.Short;
}
/// <summary> sC ("select Columns") is the fields selector clause. (like in SQL Statements)</summary>
public DbGrid sC(string allfields)
{
DbGrid ret = new DbGrid(this);
ret.allFields = ret.fields.Clone(); //new Pile<string> (ret.fieldNames);
Reach fields = new Reach(allfields + ",");
if (!fields.Trim().equals("*,"))
{
ret.fields = new Pile <DbField>();
Reach tokenMap = fields - bltZone.upon(fields - chrZone.upon(fields)); //AttGeTr: upon is too expensive!
while (fields.Trim().len > 0)
{
Reach token = tokenMap.at(1, ",");
ret.fields.Add(new DbField(fields.before(token).Trim().text)); //AttGeTr: no type information is added for each field !!! / ToBeSolved !!!
fields = fields.after(token);
tokenMap = tokenMap.after(token);
}
}
return(ret);
}
internal DbIns(DbGrid into, DatSet values)
{
init();
grid = into;
datSet = values;
}
