/**
* Method declaration
*
*
* @param c
* @param channel
*
* @return
*
* @throws Exception
*/
private Result processRollback(Tokenizer c,
Channel channel)
{
string sToken = c.getstring();
if (!sToken.Equals("WORK"))
{
c.back();
}
channel.rollback();
return(new Result());
}
/**
* Method declaration
*
*
* @param c
* @param channel
*
* @return
*
* @throws Exception
*/
private Result processScript(Tokenizer c,
Channel channel)
{
string sToken = c.getstring();
if (c.wasValue())
{
sToken = (string)c.getAsValue();
Log.scriptToFile(this, sToken, true, channel);
return(new Result());
}
else
{
c.back();
// try to script all: drop, insert; but no positions for cached tables
return(getScript(true, true, false, channel));
}
}
/**
* Method declaration
*
*
* @param c
* @param channel
*
* @return
*
* @throws Exception
*/
private Result processShutdown(Tokenizer c,
Channel channel)
{
channel.checkAdmin();
// don't disconnect system user; need it to save database
for (int i = 1; i < cChannel.Count; i++)
{
Channel d = (Channel)cChannel[i];
if (d != null)
{
d.disconnect();
}
}
cChannel.Clear();
string token = c.getstring();
if (token.Equals("IMMEDIATELY"))
{
close(-1);
}
else if (token.Equals("COMPACT"))
{
close(1);
}
else
{
c.back();
close(0);
}
processDisconnect(c, channel);
return(new Result());
}
/**
* Method declaration
*
*
* @param c
* @param channel
* @param cached
*
* @throws Exception
*/
private void processCreateTable(Tokenizer c, Channel channel,
bool cached)
{
Table t;
string sToken = c.getName();
if (cached && lLog != null)
{
t = new Table(this, true, sToken, true);
}
else
{
t = new Table(this, true, sToken, false);
}
c.getThis("(");
int primarykeycolumn = -1;
int column = 0;
bool constraint = false;
while (true)
{
bool identity = false;
sToken = c.getstring();
if (sToken.Equals("CONSTRAINT") || sToken.Equals("PRIMARY") ||
sToken.Equals("FOREIGN") || sToken.Equals("UNIQUE"))
{
c.back();
constraint = true;
break;
}
string sColumn = sToken;
int iType = Column.getTypeNr(c.getstring());
if (iType == Column.VARCHAR && bIgnoreCase)
{
iType = Column.VARCHAR_IGNORECASE;
}
sToken = c.getstring();
if (iType == Column.DOUBLE && sToken.Equals("PRECISION"))
{
sToken = c.getstring();
}
if (sToken.Equals("("))
{
// overread length
do
{
sToken = c.getstring();
} while (!sToken.Equals(")"));
sToken = c.getstring();
}
bool nullable = true;
if (sToken.Equals("NULL"))
{
sToken = c.getstring();
}
else if (sToken.Equals("NOT"))
{
c.getThis("NULL");
nullable = false;
sToken = c.getstring();
}
if (sToken.Equals("IDENTITY"))
{
identity = true;
Trace.check(primarykeycolumn == -1, Trace.SECOND_PRIMARY_KEY,
sColumn);
sToken = c.getstring();
primarykeycolumn = column;
}
if (sToken.Equals("PRIMARY"))
{
c.getThis("KEY");
Trace.check(identity || primarykeycolumn == -1,
Trace.SECOND_PRIMARY_KEY, sColumn);
primarykeycolumn = column;
sToken = c.getstring();
}
t.addColumn(sColumn, iType, nullable, identity);
if (sToken.Equals(")"))
{
break;
}
if (!sToken.Equals(","))
{
throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
}
column++;
}
if (primarykeycolumn != -1)
{
t.createPrimaryKey(primarykeycolumn);
}
else
{
t.createPrimaryKey();
}
if (constraint)
{
int i = 0;
while (true)
{
sToken = c.getstring();
string name = "SYSTEM_CONSTRAINT" + i;
i++;
if (sToken.Equals("CONSTRAINT"))
{
name = c.getstring();
sToken = c.getstring();
}
if (sToken.Equals("PRIMARY"))
{
c.getThis("KEY");
addUniqueConstraintOn(c, channel, name, t);
}
else if (sToken.Equals("UNIQUE"))
{
addUniqueConstraintOn(c, channel, name, t);
}
else if (sToken.Equals("FOREIGN"))
{
c.getThis("KEY");
addForeignKeyOn(c, channel, name, t);
}
sToken = c.getstring();
if (sToken.Equals(")"))
{
break;
}
if (!sToken.Equals(","))
{
throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
}
}
}
channel.commit();
linkTable(t);
}