private Result ProcessDrop(Tokenizer tokenizer, Channel channel)
{
channel.CheckReadWrite();
channel.CheckAdmin();
string sToken = tokenizer.GetString();
if (sToken.Equals("TABLE"))
{
sToken = tokenizer.GetString();
if (sToken.Equals("IF"))
{
sToken = tokenizer.GetString(); // EXISTS
sToken = tokenizer.GetString(); // <table>
DropTable(sToken, true);
}
else
{
DropTable(sToken, false);
}
channel.Commit();
}
else if (sToken.Equals("USER"))
{
_access.DropUser(tokenizer.GetStringToken());
}
else if (sToken.Equals("INDEX"))
{
sToken = tokenizer.GetString();
if (!tokenizer.WasLongName)
{
throw Trace.Error(Trace.UnexpectedToken, sToken);
}
string table = tokenizer.LongNameFirst;
string index = tokenizer.LongNameLast;
Table t = GetTable(table, channel);
t.CheckDropIndex(index);
Table tn = t.MoveDefinition(index);
tn.MoveData(t);
DropTable(table);
LinkTable(tn);
channel.Commit();
}
else
{
throw Trace.Error(Trace.UnexpectedToken, sToken);
}
return(new Result());
}
private Result ProcessCommit(Tokenizer c,
Channel channel)
{
string sToken = c.GetString();
if (!sToken.Equals("WORK"))
{
c.Back();
}
channel.Commit();
return(new Result());
}
private Result ProcessConnect(Tokenizer c,
Channel channel)
{
c.GetThis("USER");
string username = c.GetStringToken();
c.GetThis("PASSWORD");
string password = c.GetStringToken();
User user = _access.GetUser(username, password);
channel.Commit();
channel.SetUser(user);
return(new Result());
}
private void CreateIndex(Channel channel, Table t, int[] col, string name, bool unique)
{
channel.Commit();
if (t.IsEmpty)
{
t.CreateIndex(col, name, unique);
}
else
{
Table tn = t.MoveDefinition(null);
tn.CreateIndex(col, name, unique);
tn.MoveData(t);
DropTable(t.Name);
LinkTable(tn);
}
}
private Result ProcessShow(Tokenizer tokenizer, Channel channel)
{
Result r = new Result(1);
string sToken = tokenizer.GetString();
if (sToken.Equals("TABLES"))
{
System.Collections.ArrayList al = channel.Database.Tables;
r.Label[0] = "TABLE";
r.Type[0] = ColumnType.VarChar;
for (int x = 0; x < al.Count; x++)
{
Table table = (Table)al[x];
string[] tablename = new string [1];
tablename[0] = table.Name;
r.Add(tablename);
}
channel.Commit();
}
else if (sToken.Equals("DATABASES"))
{
r.Label[0] = "DATABASE";
r.Type[0] = ColumnType.VarChar;
System.IO.DirectoryInfo di = new
System.IO.DirectoryInfo(System.IO.Directory.GetCurrentDirectory());
System.IO.FileInfo[] rgFiles = di.GetFiles("*.data");
foreach (System.IO.FileInfo fi in rgFiles)
{
string[] databaseName = new string [1];
databaseName[0] = fi.Name.ToUpper().Replace(".DATA", "");
r.Add(databaseName);
}
channel.Commit();
}
else if (sToken.Equals("ALIAS"))
{
r = new Result(2);
r.Label[0] = "NAME";
r.Type[0] = ColumnType.VarChar;
r.Label[1] = "LIBRARY";
r.Type[1] = ColumnType.VarChar;
foreach (DictionaryEntry entry in _alias)
{
string[] alias = new string [2];
alias[0] = entry.Key.ToString();
alias[1] = entry.Value.ToString();
r.Add(alias);
}
channel.Commit();
}
else if (sToken.Equals("PARAMETERS"))
{
string alias = tokenizer.GetString().ToUpper();
if (!_alias.ContainsKey(alias))
{
throw Trace.Error(Trace.UNKNOWN_FUNCTION, alias);
}
string fqn = _alias[alias].ToString();
Function f = new Function(fqn, channel);
System.Reflection.MethodInfo mi = f.GetMethodInfo(fqn);
r = new Result(4);
r.Label[0] = "ALIAS";
r.Type[0] = ColumnType.VarChar;
r.Label[1] = "PARAMETER";
r.Type[1] = ColumnType.VarChar;
r.Label[2] = "TYPE";
r.Type[2] = ColumnType.VarChar;
r.Label[3] = "POSITION";
r.Type[3] = ColumnType.Integer;
System.Reflection.ParameterInfo[] parms = mi.GetParameters();
int rt = 0;
if (mi.ReturnType != null)
{
object[] p = new object[4];
p[0] = alias;
p[1] = "RETURN_VALUE";
p[2] = Column.GetColumnTypeString(Function.GetDataType(mi.ReturnType));
p[3] = 0;
r.Add(p);
rt = 1;
}
foreach (System.Reflection.ParameterInfo pi in parms)
{
object[] p = new object[4];
p[0] = alias;
p[1] = pi.Name;
p[2] = Column.GetColumnTypeString(Function.GetDataType(pi.ParameterType));
p[3] = (pi.Position + rt);
r.Add(p);
}
channel.Commit();
}
else if (sToken.Equals("COLUMNS"))
{
string t = tokenizer.GetString().ToUpper();
Table theTable = null;
foreach (Table table in channel.Database.Tables)
{
if (table.Name.ToUpper() == t)
{
theTable = table;
break;
}
}
if (theTable == null)
{
throw Trace.Error(Trace.TABLE_NOT_FOUND, t);
}
r = new Result(7);
r.Label[0] = "TABLE";
r.Type[0] = ColumnType.VarChar;
r.Label[1] = "COLUMN";
r.Type[1] = ColumnType.VarChar;
r.Label[2] = "NATIVETYPE";
r.Type[2] = ColumnType.VarChar;
r.Label[3] = "DBTYPE";
r.Type[3] = ColumnType.Integer;
r.Label[4] = "POSITION";
r.Type[4] = ColumnType.Integer;
r.Label[5] = "NULLABLE";
r.Type[5] = ColumnType.Bit;
r.Label[6] = "IDENTITY";
r.Type[6] = ColumnType.Bit;
for (int ix = 0; ix < theTable.ColumnCount; ix++)
{
Column col = theTable.GetColumn(ix);
object[] coldata = new object[7];
coldata[0] = theTable.Name;
coldata[1] = col.Name;
coldata[2] = Column.GetColumnTypeString(col.ColumnType);
coldata[3] = Column.GetDbType(col.ColumnType);
coldata[4] = ix;
coldata[5] = col.IsNullable;
coldata[6] = col.IsIdentity;
r.Add(coldata);
}
channel.Commit();
}
else
{
throw Trace.Error(Trace.UnexpectedToken, sToken);
}
return(r);
}
private void ProcessCreateTable(Tokenizer tokenizer, Channel channel, bool cached)
{
Table t;
string sToken = tokenizer.GetName();
if (cached && _log != null)
{
t = new Table(this, true, sToken, true);
}
else
{
t = new Table(this, true, sToken, false);
}
tokenizer.GetThis("(");
int primarykeycolumn = -1;
int column = 0;
bool constraint = false;
while (true)
{
bool identity = false;
sToken = tokenizer.GetString();
if (sToken.Equals("CONSTRAINT") || sToken.Equals("PRIMARY") ||
sToken.Equals("FOREIGN") || sToken.Equals("UNIQUE"))
{
tokenizer.Back();
constraint = true;
break;
}
string sColumn = sToken;
ColumnType iType = Column.GetColumnType(tokenizer.GetString());
if (iType == ColumnType.VarChar && _ignoreCase)
{
iType = ColumnType.VarCharIgnoreCase;
}
sToken = tokenizer.GetString();
if (iType == ColumnType.DbDouble && sToken.Equals("PRECISION"))
{
sToken = tokenizer.GetString();
}
if (sToken.Equals("("))
{
// overread length
do
{
sToken = tokenizer.GetString();
} while (!sToken.Equals(")"));
sToken = tokenizer.GetString();
}
bool nullable = true;
if (sToken.Equals("NULL"))
{
sToken = tokenizer.GetString();
}
else if (sToken.Equals("NOT"))
{
tokenizer.GetThis("NULL");
nullable = false;
sToken = tokenizer.GetString();
}
if (sToken.Equals("IDENTITY"))
{
identity = true;
Trace.Check(primarykeycolumn == -1, Trace.SECOND_PRIMARY_KEY,
sColumn);
sToken = tokenizer.GetString();
primarykeycolumn = column;
}
if (sToken.Equals("PRIMARY"))
{
tokenizer.GetThis("KEY");
Trace.Check(identity || primarykeycolumn == -1,
Trace.SECOND_PRIMARY_KEY, sColumn);
primarykeycolumn = column;
sToken = tokenizer.GetString();
}
t.AddColumn(sColumn, iType, nullable, identity);
if (sToken.Equals(")"))
{
break;
}
if (!sToken.Equals(","))
{
throw Trace.Error(Trace.UnexpectedToken, sToken);
}
column++;
}
if (primarykeycolumn != -1)
{
t.CreatePrimaryKey(primarykeycolumn);
}
else
{
t.CreatePrimaryKey();
}
if (constraint)
{
int i = 0;
while (true)
{
sToken = tokenizer.GetString();
string name = "SYSTEM_CONSTRAINT" + i;
i++;
if (sToken.Equals("CONSTRAINT"))
{
name = tokenizer.GetString();
sToken = tokenizer.GetString();
}
if (sToken.Equals("PRIMARY"))
{
tokenizer.GetThis("KEY");
AddUniqueConstraintOn(tokenizer, channel, name, t);
}
else if (sToken.Equals("UNIQUE"))
{
AddUniqueConstraintOn(tokenizer, channel, name, t);
}
else if (sToken.Equals("FOREIGN"))
{
tokenizer.GetThis("KEY");
AddForeignKeyOn(tokenizer, channel, name, t);
}
sToken = tokenizer.GetString();
if (sToken.Equals(")"))
{
break;
}
if (!sToken.Equals(","))
{
throw Trace.Error(Trace.UnexpectedToken, sToken);
}
}
}
channel.Commit();
LinkTable(t);
}
private Result ProcessSet(Tokenizer tokenizer, Channel channel)
{
string sToken = tokenizer.GetString();
switch (sToken)
{
case "PASSWORD":
channel.CheckReadWrite();
channel.SetPassword(tokenizer.GetStringToken());
break;
case "READONLY":
channel.Commit();
channel.SetReadOnly(ProcessTrueOrFalse(tokenizer));
break;
case "LOGSIZE":
{
channel.CheckAdmin();
int i = Int32.Parse(tokenizer.GetString());
if (_log != null)
{
_log.SetLogSize(i);
}
}
break;
case "IGNORECASE":
channel.CheckAdmin();
_ignoreCase = ProcessTrueOrFalse(tokenizer);
break;
case "MAXROWS":
{
int i = Int32.Parse(tokenizer.GetString());
channel.MaxRows = i;
break;
}
case "AUTOCOMMIT":
channel.SetAutoCommit(ProcessTrueOrFalse(tokenizer));
break;
case "TABLE":
{
channel.CheckReadWrite();
channel.CheckAdmin();
Table t = GetTable(tokenizer.GetString(), channel);
tokenizer.GetThis("INDEX");
tokenizer.GetString();
t.IndexRoots = (string)tokenizer.Value;
}
break;
case "REFERENCIAL_INTEGRITY":
case "REFERENTIAL_INTEGRITY":
channel.CheckAdmin();
_referentialIntegrity = ProcessTrueOrFalse(tokenizer);
break;
case "WRITE_DELAY":
{
channel.CheckAdmin();
bool delay = ProcessTrueOrFalse(tokenizer);
if (_log != null)
{
_log.SetWriteDelay(delay);
}
}
break;
default:
if (tokenizer.TokenType == TokenType.VARIABLE)
{
Parser p = new Parser(this, tokenizer, channel);
p.ProcessSet(sToken);
break;
}
throw Trace.Error(Trace.UnexpectedToken, sToken);
}
return(new Result());
}
public void commit(Channel myChannel)
{
myChannel.Commit();
}
private void ProcessCreateTable(Tokenizer tokenizer, Channel channel, bool cached)
{
Table t;
string sToken = tokenizer.GetName();
if (cached && _log != null)
{
t = new Table(this, true, sToken, true);
}
else
{
t = new Table(this, true, sToken, false);
}
tokenizer.GetThis("(");
int primarykeycolumn = -1;
int column = 0;
bool constraint = false;
while (true)
{
bool identity = false;
sToken = tokenizer.GetString();
if (sToken.Equals("CONSTRAINT") || sToken.Equals("PRIMARY")
|| sToken.Equals("FOREIGN") || sToken.Equals("UNIQUE"))
{
tokenizer.Back();
constraint = true;
break;
}
string sColumn = sToken;
ColumnType iType = Column.GetColumnType(tokenizer.GetString());
if (iType == ColumnType.VarChar && _ignoreCase)
{
iType = ColumnType.VarCharIgnoreCase;
}
sToken = tokenizer.GetString();
if (iType == ColumnType.DbDouble && sToken.Equals("PRECISION"))
{
sToken = tokenizer.GetString();
}
if (sToken.Equals("("))
{
// overread length
do
{
sToken = tokenizer.GetString();
} while (!sToken.Equals(")"));
sToken = tokenizer.GetString();
}
bool nullable = true;
if (sToken.Equals("NULL"))
{
sToken = tokenizer.GetString();
}
else if (sToken.Equals("NOT"))
{
tokenizer.GetThis("NULL");
nullable = false;
sToken = tokenizer.GetString();
}
if (sToken.Equals("IDENTITY"))
{
identity = true;
TracingHelper.Check(primarykeycolumn == -1, TracingHelper.SECOND_PRIMARY_KEY,
sColumn);
sToken = tokenizer.GetString();
primarykeycolumn = column;
}
if (sToken.Equals("PRIMARY"))
{
tokenizer.GetThis("KEY");
TracingHelper.Check(identity || primarykeycolumn == -1,
TracingHelper.SECOND_PRIMARY_KEY, sColumn);
primarykeycolumn = column;
sToken = tokenizer.GetString();
}
t.AddColumn(sColumn, iType, nullable, identity);
if (sToken.Equals(")"))
{
break;
}
if (!sToken.Equals(","))
{
throw TracingHelper.Error(TracingHelper.UnexpectedToken, sToken);
}
column++;
}
if (primarykeycolumn != -1)
{
t.CreatePrimaryKey(primarykeycolumn);
}
else
{
t.CreatePrimaryKey();
}
if (constraint)
{
int i = 0;
while (true)
{
sToken = tokenizer.GetString();
string name = "SYSTEM_CONSTRAINT" + i;
i++;
if (sToken.Equals("CONSTRAINT"))
{
name = tokenizer.GetString();
sToken = tokenizer.GetString();
}
if (sToken.Equals("PRIMARY"))
{
tokenizer.GetThis("KEY");
AddUniqueConstraintOn(tokenizer, channel, name, t);
}
else if (sToken.Equals("UNIQUE"))
{
AddUniqueConstraintOn(tokenizer, channel, name, t);
}
else if (sToken.Equals("FOREIGN"))
{
tokenizer.GetThis("KEY");
AddForeignKeyOn(tokenizer, channel, name, t);
}
sToken = tokenizer.GetString();
if (sToken.Equals(")"))
{
break;
}
if (!sToken.Equals(","))
{
throw TracingHelper.Error(TracingHelper.UnexpectedToken, sToken);
}
}
}
channel.Commit();
LinkTable(t);
}
private Result ProcessDrop(Tokenizer tokenizer, Channel channel)
{
channel.CheckReadWrite();
channel.CheckAdmin();
string sToken = tokenizer.GetString();
if (sToken.Equals("TABLE"))
{
sToken = tokenizer.GetString();
if (sToken.Equals("IF"))
{
sToken = tokenizer.GetString(); // EXISTS
sToken = tokenizer.GetString(); // <table>
DropTable(sToken, true);
}
else
{
DropTable(sToken, false);
}
channel.Commit();
}
else if (sToken.Equals("USER"))
{
_access.DropUser(tokenizer.GetStringToken());
}
else if (sToken.Equals("INDEX"))
{
sToken = tokenizer.GetString();
if (!tokenizer.WasLongName)
{
throw TracingHelper.Error(TracingHelper.UnexpectedToken, sToken);
}
string table = tokenizer.LongNameFirst;
string index = tokenizer.LongNameLast;
Table t = GetTable(table, channel);
t.CheckDropIndex(index);
Table tn = t.MoveDefinition(index);
tn.MoveData(t);
DropTable(table);
LinkTable(tn);
channel.Commit();
}
else
{
throw TracingHelper.Error(TracingHelper.UnexpectedToken, sToken);
}
return new Result();
}
private Result ProcessConnect(Tokenizer c,
Channel channel)
{
c.GetThis("USER");
string username = c.GetStringToken();
c.GetThis("PASSWORD");
string password = c.GetStringToken();
User user = _access.GetUser(username, password);
channel.Commit();
channel.SetUser(user);
return new Result();
}
private Result ProcessCommit(Tokenizer c,
Channel channel)
{
string sToken = c.GetString();
if (!sToken.Equals("WORK"))
{
c.Back();
}
channel.Commit();
return new Result();
}
private void CreateIndex(Channel channel, Table t, int[] col, string name, bool unique)
{
channel.Commit();
if (t.IsEmpty)
{
t.CreateIndex(col, name, unique);
}
else
{
Table tn = t.MoveDefinition(null);
tn.CreateIndex(col, name, unique);
tn.MoveData(t);
DropTable(t.Name);
LinkTable(tn);
}
}
private Result ProcessShow(Tokenizer tokenizer, Channel channel)
{
Result r = new Result(1);
string sToken = tokenizer.GetString();
if (sToken.Equals("TABLES"))
{
r.Table[0] = "SYSTEM_TABLES";
r.Label[0] = "TABLE_NAME";
System.Collections.ArrayList al = channel.Database.Tables;
//r.Label[0] = "TABLE";
r.Type[0] = ColumnType.VarChar;
for(int x=0;x<al.Count;x++)
{
Table table = (Table)al[x];
string[] tablename = new string [1];
tablename[0]=table.Name;
r.Add(tablename);
}
channel.Commit();
}
else if (sToken.Equals("DATABASES"))
{
r.Table[0] = "SYSTEM_DATABASES";
r.Label[0] = "DATABASE";
r.Type[0] = ColumnType.VarChar;
System.IO.DirectoryInfo di = new
System.IO.DirectoryInfo(System.IO.Directory.GetCurrentDirectory());
System.IO.FileInfo[] rgFiles = di.GetFiles("*.data");
foreach(System.IO.FileInfo fi in rgFiles)
{
string[] databaseName = new string [1];
databaseName[0]=fi.Name.ToUpper().Replace(".DATA","");
r.Add(databaseName);
}
channel.Commit();
}
else if (sToken.Equals("ALIAS"))
{
r = new Result(2);
r.Label[0]="NAME";
r.Type[0] = ColumnType.VarChar;
r.Label[1]="LIBRARY";
r.Type[1] = ColumnType.VarChar;
foreach( DictionaryEntry entry in _alias )
{
string[] alias = new string [2];
alias[0] = entry.Key.ToString();
alias[1] = entry.Value.ToString();
r.Add(alias);
}
channel.Commit();
}
else if (sToken.Equals("PARAMETERS"))
{
string alias = tokenizer.GetString().ToUpper();
if( !_alias.ContainsKey( alias ) )
throw TracingHelper.Error(TracingHelper.UNKNOWN_FUNCTION, alias);
string fqn = _alias[alias].ToString();
Function f = new Function( fqn, channel );
System.Reflection.MethodInfo mi = f.GetMethodInfo( fqn );
r = new Result(4);
r.Label[0]="ALIAS";
r.Type[0] = ColumnType.VarChar;
r.Label[1]="PARAMETER";
r.Type[1] = ColumnType.VarChar;
r.Label[2]="TYPE";
r.Type[2] = ColumnType.VarChar;
r.Label[3]="POSITION";
r.Type[3] = ColumnType.Integer;
System.Reflection.ParameterInfo[] parms = mi.GetParameters();
int rt = 0;
if( mi.ReturnType != null )
{
object[] p = new object[4];
p[0] = alias;
p[1] = "RETURN_VALUE";
p[2] = Column.GetColumnTypeString( Function.GetDataType( mi.ReturnType ) );
p[3] = 0;
r.Add(p);
rt = 1;
}
foreach( System.Reflection.ParameterInfo pi in parms )
{
object[] p = new object[4];
p[0] = alias;
p[1] = pi.Name;
p[2] = Column.GetColumnTypeString( Function.GetDataType( pi.ParameterType ) );
p[3] = (pi.Position + rt);
r.Add(p);
}
channel.Commit();
}
else if (sToken.Equals("COLUMNS"))
{
string t = tokenizer.GetString().ToUpper();
Table theTable = null;
foreach( Table table in channel.Database.Tables )
{
if( table.Name.ToUpper() == t )
{
theTable = table;
break;
}
}
if( theTable == null )
throw TracingHelper.Error(TracingHelper.TABLE_NOT_FOUND, t);
r = new Result(7);
r.Label[0]="TABLE";
r.Type[0] = ColumnType.VarChar;
r.Label[1]="COLUMN";
r.Type[1] = ColumnType.VarChar;
r.Label[2]="NATIVETYPE";
r.Type[2] = ColumnType.VarChar;
r.Label[3]="DBTYPE";
r.Type[3] = ColumnType.Integer;
r.Label[4]="POSITION";
r.Type[4] = ColumnType.Integer;
r.Label[5]="NULLABLE";
r.Type[5] = ColumnType.Bit;
r.Label[6]="IDENTITY";
r.Type[6] = ColumnType.Bit;
for(int ix=0;ix<theTable.ColumnCount;ix++)
{
Column col = theTable.GetColumn(ix);
object[] coldata = new object[7];
coldata[0] = theTable.Name;
coldata[1] = col.Name;
coldata[2] = Column.GetColumnTypeString( col.ColumnType );
coldata[3] = Column.GetDbType( col.ColumnType );
coldata[4] = ix;
coldata[5] = col.IsNullable;
coldata[6] = col.IsIdentity;
r.Add(coldata);
}
channel.Commit();
}
else
{
throw TracingHelper.Error(TracingHelper.UnexpectedToken, sToken);
}
return r;
}
private Result ProcessSet(Tokenizer tokenizer, Channel channel)
{
string sToken = tokenizer.GetString();
switch(sToken)
{
case "PASSWORD":
channel.CheckReadWrite();
channel.SetPassword(tokenizer.GetStringToken());
break;
case "READONLY":
channel.Commit();
channel.SetReadOnly(ProcessTrueOrFalse(tokenizer));
break;
case "LOGSIZE":
{
channel.CheckAdmin();
int i = Int32.Parse(tokenizer.GetString());
if (_log != null)
{
_log.SetLogSize(i);
}
}
break;
case "IGNORECASE":
channel.CheckAdmin();
_ignoreCase = ProcessTrueOrFalse(tokenizer);
break;
case "MAXROWS":
{
int i = Int32.Parse(tokenizer.GetString());
channel.MaxRows = i;
break;
}
case "AUTOCOMMIT":
channel.SetAutoCommit(ProcessTrueOrFalse(tokenizer));
break;
case "TABLE":
{
channel.CheckReadWrite();
channel.CheckAdmin();
Table t = GetTable(tokenizer.GetString(), channel);
tokenizer.GetThis("INDEX");
tokenizer.GetString();
t.IndexRoots = (string)tokenizer.Value;
}
break;
case "REFERENCIAL_INTEGRITY":
case "REFERENTIAL_INTEGRITY":
channel.CheckAdmin();
_referentialIntegrity = ProcessTrueOrFalse(tokenizer);
break;
case "WRITE_DELAY":
{
channel.CheckAdmin();
bool delay = ProcessTrueOrFalse(tokenizer);
if (_log != null)
{
_log.SetWriteDelay(delay);
}
}
break;
default:
if( tokenizer.TokenType == TokenType.VARIABLE )
{
Parser p = new Parser(this, tokenizer, channel);
p.ProcessSet( sToken );
break;
}
throw TracingHelper.Error(TracingHelper.UnexpectedToken, sToken);
}
return new Result();
}
