ByteSlice Conv_LongToDouble(ByteSlice value, int ResultSize, DbFunctionTools tools)
{
long x = tools.GetLong(value);
DbValue v = tools.AllocValue((double)x);
return(v.Eval());
}
public static DbValue SUM(DbFunctionTools tools, DbAggregatorArguments args)
{
string AggregatorName = "SUM";
double sumd = 0;
int sumi = 0;
long suml = 0;
DbType arg0type = DbType.PrepareNull();
for (int iarg = 0; iarg < args.Length; iarg++)
{
args[iarg].EnsureCount(AggregatorName, 1);
ByteSlice arg0 = args[iarg][0].Eval(out arg0type);
if (!Types.IsNullValue(arg0)) //ignore null
{
switch (arg0type.ID)
{
case DbTypeID.INT:
sumi += tools.GetInt(arg0);
break;
case DbTypeID.LONG:
suml += tools.GetLong(arg0);
break;
case DbTypeID.DOUBLE:
sumd += tools.GetDouble(arg0);
break;
default:
args[iarg].Expected(AggregatorName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return(null); // Doesn't reach here.
}
}
}
if (args.Length > 0)
{
switch (arg0type.ID)
{
case DbTypeID.INT:
return(tools.AllocValue(sumi));
break;
case DbTypeID.LONG:
return(tools.AllocValue(suml));
break;
case DbTypeID.DOUBLE:
return(tools.AllocValue(sumd));
break;
}
}
return(tools.AllocValue(sumi));
}
public static DbValue SUM(DbFunctionTools tools, DbAggregatorArguments args)
{
string AggregatorName = "SUM";
double sumd = 0;
int sumi = 0;
long suml = 0;
DbType arg0type = DbType.PrepareNull();
for (int iarg = 0; iarg < args.Length; iarg++)
{
args[iarg].EnsureCount(AggregatorName, 1);
ByteSlice arg0 = args[iarg][0].Eval(out arg0type);
if (!Types.IsNullValue(arg0)) //ignore null
{
switch (arg0type.ID)
{
case DbTypeID.INT:
sumi += tools.GetInt(arg0);
break;
case DbTypeID.LONG:
suml += tools.GetLong(arg0);
break;
case DbTypeID.DOUBLE:
sumd += tools.GetDouble(arg0);
break;
default:
args[iarg].Expected(AggregatorName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return null; // Doesn't reach here.
}
}
}
if (args.Length > 0)
{
switch (arg0type.ID)
{
case DbTypeID.INT:
return tools.AllocValue(sumi);
break;
case DbTypeID.LONG:
return tools.AllocValue(suml);
break;
case DbTypeID.DOUBLE:
return tools.AllocValue(sumd);
break;
}
}
return tools.AllocValue(sumi);
}
private static double _VAR(string aggregatorName, DbFunctionTools tools, DbAggregatorArguments args, bool sample)
{
List <double> values = new List <double>();
double x = 0;
double sum = 0;
for (int iarg = 0; iarg < args.Length; iarg++)
{
args[iarg].EnsureCount(aggregatorName, 1);
DbType arg0type;
ByteSlice arg0 = args[iarg][0].Eval(out arg0type);
if (!Types.IsNullValue(arg0)) //ignore null
{
switch (arg0type.ID)
{
case DbTypeID.INT:
x = (double)tools.GetInt(arg0);
break;
case DbTypeID.LONG:
x = (double)tools.GetLong(arg0);
break;
case DbTypeID.DOUBLE:
x = tools.GetDouble(arg0);
break;
default:
args[iarg].Expected(aggregatorName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return(0); // Doesn't reach here.
}
values.Add(x);
sum += x;
}
}
double dev = 0;
if (values.Count > 0)
{
double avg = sum / (double)values.Count;
for (int i = 0; i < values.Count; i++)
{
dev += Math.Pow(values[i] - avg, 2);
}
dev = dev / (double)(sample ? values.Count - 1 : values.Count);
}
return(dev);
}
public static DbValue DEGREES(DbFunctionTools tools, DbFunctionArguments args)
{
string FunctionName = "DEGREES";
args.EnsureCount(FunctionName, 1);
DbType arg0type;
ByteSlice arg0 = args[0].Eval(out arg0type);
if (Types.IsNullValue(arg0))
{
return(tools.AllocNullValue()); // Give a null, take a null.
}
double d = 0;
switch (arg0type.ID)
{
case DbTypeID.INT:
{
int x = tools.GetInt(arg0);
d = (double)x;
}
break;
case DbTypeID.LONG:
{
long x = tools.GetLong(arg0);
d = (double)x;
}
break;
case DbTypeID.DOUBLE:
{
d = tools.GetDouble(arg0);
}
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return(null); // Doesn't reach here.
}
double r = (d * 180d) / Math.PI;
return(tools.AllocValue(r));
}
private static double _VAR(string aggregatorName, DbFunctionTools tools, DbAggregatorArguments args, bool sample)
{
List<double> values = new List<double>();
double x = 0;
double sum = 0;
for (int iarg = 0; iarg < args.Length; iarg++)
{
args[iarg].EnsureCount(aggregatorName, 1);
DbType arg0type;
ByteSlice arg0 = args[iarg][0].Eval(out arg0type);
if (!Types.IsNullValue(arg0)) //ignore null
{
switch (arg0type.ID)
{
case DbTypeID.INT:
x = (double)tools.GetInt(arg0);
break;
case DbTypeID.LONG:
x = (double)tools.GetLong(arg0);
break;
case DbTypeID.DOUBLE:
x = tools.GetDouble(arg0);
break;
default:
args[iarg].Expected(aggregatorName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return 0; // Doesn't reach here.
}
values.Add(x);
sum += x;
}
}
double dev = 0;
if (values.Count > 0)
{
double avg = sum / (double)values.Count;
for (int i = 0; i < values.Count; i++)
{
dev += Math.Pow(values[i] - avg, 2);
}
dev = dev / (double)(sample ? values.Count - 1 : values.Count);
}
return dev;
}
public static DbValue ABS(DbFunctionTools tools, DbFunctionArguments args)
{
string FunctionName = "ABS";
args.EnsureCount(FunctionName, 1);
DbType arg0type;
ByteSlice arg0 = args[0].Eval(out arg0type);
if (Types.IsNullValue(arg0))
{
return tools.AllocNullValue(); // Give a null, take a null.
}
switch (arg0type.ID)
{
case DbTypeID.INT:
{
int x = tools.GetInt(arg0);
x = Math.Abs(x);
return tools.AllocValue(x);
}
break;
case DbTypeID.LONG:
{
long x = tools.GetLong(arg0);
x = Math.Abs(x);
return tools.AllocValue(x);
}
break;
case DbTypeID.DOUBLE:
{
double x = tools.GetDouble(arg0);
x = Math.Abs(x);
return tools.AllocValue(x);
}
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return null; // Doesn't reach here.
}
}
public static DbValue AVG(DbFunctionTools tools, DbAggregatorArguments args)
{
string AggregatorName = "AVG";
double sum = 0;
int count = 0;
for (int iarg = 0; iarg < args.Length; iarg++)
{
args[iarg].EnsureCount(AggregatorName, 1);
DbType arg0type;
ByteSlice arg0 = args[iarg][0].Eval(out arg0type);
if (!Types.IsNullValue(arg0)) //ignore null
{
count++;
switch (arg0type.ID)
{
case DbTypeID.INT:
sum += (double)tools.GetInt(arg0);
break;
case DbTypeID.LONG:
sum += (double)tools.GetLong(arg0);
break;
case DbTypeID.DOUBLE:
sum += tools.GetDouble(arg0);
break;
default:
args[iarg].Expected(AggregatorName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return(null); // Doesn't reach here.
}
}
}
double avg = 0;
if (count > 0)
{
avg = sum / (double)count;
}
return(tools.AllocValue(avg));
}
public static DbValue AVG(DbFunctionTools tools, DbAggregatorArguments args)
{
string AggregatorName = "AVG";
double sum = 0;
int count = 0;
for (int iarg = 0; iarg < args.Length; iarg++)
{
args[iarg].EnsureCount(AggregatorName, 1);
DbType arg0type;
ByteSlice arg0 = args[iarg][0].Eval(out arg0type);
if (!Types.IsNullValue(arg0)) //ignore null
{
count++;
switch (arg0type.ID)
{
case DbTypeID.INT:
sum += (double)tools.GetInt(arg0);
break;
case DbTypeID.LONG:
sum += (double)tools.GetLong(arg0);
break;
case DbTypeID.DOUBLE:
sum += tools.GetDouble(arg0);
break;
default:
args[iarg].Expected(AggregatorName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return null; // Doesn't reach here.
}
}
}
double avg = 0;
if (count > 0)
{
avg = sum / (double)count;
}
return tools.AllocValue(avg);
}
public static void DbFunctions_MOD()
{
DbFunctionTools tools = new DbFunctionTools();
Random rnd = new Random();
//Double.
{
Console.WriteLine("Testing DbFunctions.MOD(Double, Double)...");
double input0 = rnd.NextDouble();
double input1 = rnd.NextDouble();
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input0));
args.Add(tools.AllocValue(input1));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.MOD(tools, fargs);
ByteSlice bs = valOutput.Eval();
double output = tools.GetDouble(bs);
double expected = input0 % input1;
if (expected != output)
{
throw new Exception("DbFunctions.MOD(Double, Double) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.MOD(Int32, Int32)...");
int input0 = rnd.Next();
int input1 = rnd.Next();
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input0));
args.Add(tools.AllocValue(input1));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.MOD(tools, fargs);
ByteSlice bs = valOutput.Eval();
int output = tools.GetInt(bs);
int expected = input0 % input1;
if (expected != output)
{
throw new Exception("DbFunctions.MOD(Int32, Int32) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.MOD(Long, Long)...");
long input0 = DateTime.Now.Ticks;
long input1 = DateTime.Now.Ticks;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input0));
args.Add(tools.AllocValue(input1));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.MOD(tools, fargs);
ByteSlice bs = valOutput.Eval();
long output = tools.GetLong(bs);
long expected = input0 % input1;
if (expected != output)
{
throw new Exception("DbFunctions.MOD(Long, Long) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.MOD(Int32, Double)...");
int input0 = rnd.Next();
double input1 = rnd.NextDouble();
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input0));
args.Add(tools.AllocValue(input1));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.MOD(tools, fargs);
ByteSlice bs = valOutput.Eval();
double output = tools.GetDouble(bs);
double expected = (double)input0 % input1;
if (expected != output)
{
throw new Exception("DbFunctions.MOD(Int32, Double) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.MOD(Int32, Long)...");
int input0 = rnd.Next();
long input1 = DateTime.Now.Ticks;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input0));
args.Add(tools.AllocValue(input1));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.MOD(tools, fargs);
ByteSlice bs = valOutput.Eval();
long output = tools.GetLong(bs);
long expected = (long)input0 % input1;
if (expected != output)
{
throw new Exception("DbFunctions.MOD(Int32, Long) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
}
public static DbValue SUB(DbFunctionTools tools, DbFunctionArguments args)
{
string FunctionName = "SUB";
args.EnsureCount(FunctionName, 2);
DbType arg0type;
ByteSlice arg0 = args[0].Eval(out arg0type);
if (Types.IsNullValue(arg0))
{
return(tools.AllocValue(arg0, arg0type)); // Give a null, take a null.
}
DbType arg1type;
ByteSlice arg1 = args[1].Eval(out arg1type);
if (Types.IsNullValue(arg1))
{
return(tools.AllocValue(arg1, arg1type)); // Give a null, take a null.
}
switch (arg0type.ID)
{
case DbTypeID.INT:
{
int x = tools.GetInt(arg0);
switch (arg1type.ID)
{
case DbTypeID.INT:
{
int y = tools.GetInt(arg1);
return(tools.AllocValue(x - y));
}
break;
case DbTypeID.LONG:
{
long y = tools.GetLong(arg1);
return(tools.AllocValue(x - y));
}
break;
case DbTypeID.DOUBLE:
{
double y = tools.GetDouble(arg1);
return(tools.AllocValue(x - y));
}
break;
default:
args.Expected(FunctionName, 1, "input INT, LONG or DOUBLE, got " + arg1type.Name.ToUpper());
return(null); // Doesn't reach here.
}
}
break;
case DbTypeID.LONG:
{
long x = tools.GetLong(arg0);
switch (arg1type.ID)
{
case DbTypeID.INT:
{
int y = tools.GetInt(arg1);
return(tools.AllocValue(x - y));
}
break;
case DbTypeID.LONG:
{
long y = tools.GetLong(arg1);
return(tools.AllocValue(x - y));
}
break;
case DbTypeID.DOUBLE:
{
double y = tools.GetDouble(arg1);
return(tools.AllocValue(x - y));
}
break;
default:
args.Expected(FunctionName, 1, "input INT, LONG or DOUBLE, got " + arg1type.Name.ToUpper());
return(null); // Doesn't reach here.
}
}
break;
case DbTypeID.DOUBLE:
{
double x = tools.GetDouble(arg0);
switch (arg1type.ID)
{
case DbTypeID.INT:
{
int y = tools.GetInt(arg1);
return(tools.AllocValue(x - y));
}
break;
case DbTypeID.LONG:
{
long y = tools.GetLong(arg1);
return(tools.AllocValue(x - y));
}
break;
case DbTypeID.DOUBLE:
{
double y = tools.GetDouble(arg1);
return(tools.AllocValue(x - y));
}
break;
default:
args.Expected(FunctionName, 1, "input INT, LONG or DOUBLE, got " + arg1type.Name.ToUpper());
return(null); // Doesn't reach here.
}
}
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return(null); // Doesn't reach here.
}
}
public static DbValue SIGN(DbFunctionTools tools, DbFunctionArguments args)
{
string FunctionName = "SIGN";
args.EnsureCount(FunctionName, 1);
DbType arg0type;
ByteSlice arg0 = args[0].Eval(out arg0type);
if (Types.IsNullValue(arg0))
{
return(tools.AllocNullValue()); // Give a null, take a null.
}
int sign = 0;
switch (arg0type.ID)
{
case DbTypeID.INT:
{
int x = tools.GetInt(arg0);
if (x > 0)
{
sign = 1;
}
else if (x < 0)
{
sign = -1;
}
}
break;
case DbTypeID.LONG:
{
long x = tools.GetLong(arg0);
if (x > 0)
{
sign = 1;
}
else if (x < 0)
{
sign = -1;
}
}
break;
case DbTypeID.DOUBLE:
{
double x = tools.GetDouble(arg0);
if (x > 0)
{
sign = 1;
}
else if (x < 0)
{
sign = -1;
}
}
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return(null); // Doesn't reach here.
}
return(tools.AllocValue(sign));
}
public static void DbAggregators_SUM()
{
DbFunctionTools tools = new DbFunctionTools();
Random rnd = new Random();
const int rowcount = 20;
//Double.
{
Console.WriteLine("Testing DbAggregators_SUM(Double)...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
double sum = 0;
for (int i = 0; i < fargs.Length; i++)
{
double input = rnd.NextDouble();
if (input < 0.5)
{
input = input * -1d;
}
sum += input;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.SUM(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
double output = tools.GetDouble(bs);
double expected = sum;
if (expected != output)
{
throw new Exception("DbAggregators_SUM(Double) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbAggregators_SUM(Int32)...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
int sum = 0;
for (int i = 0; i < fargs.Length; i++)
{
int input = rnd.Next(Int32.MinValue, Int32.MaxValue);
sum += input;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.SUM(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
int output = tools.GetInt(bs);
int expected = sum;
if (expected != output)
{
throw new Exception("DbAggregators_SUM(Int32) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbAggregators_SUM(Int64)...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
long sum = 0;
for (int i = 0; i < fargs.Length; i++)
{
long input = DateTime.Now.Ticks;
if (input % 2 == 0)
{
input = input * -1;
}
sum += input;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.SUM(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
long output = tools.GetLong(bs);
long expected = sum;
if (expected != output)
{
throw new Exception("DbAggregators_SUM(Int64) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
}
public static DbValue CAST(DbFunctionTools tools, DbFunctionArguments args)
{
#if DEBUG
//System.Diagnostics.Debugger.Launch();
#endif
string FunctionName = "CAST";
args.EnsureCount(FunctionName, 2);
DbType type;
ByteSlice bs = args[0].Eval(out type);
mstring xas = tools.GetString(args[1]);
if (!xas.StartsWith("AS "))
{
#if DEBUG
throw new Exception("Expected AS <type> in CAST, not: " + xas);
#endif
throw new Exception("Expected AS <type> in CAST");
}
mstring msastype = xas.SubstringM(3);
string sastype = msastype.ToString(); // Alloc.
sastype = DbType.NormalizeName(sastype); // Alloc if char(n).
DbType astype = DbType.Prepare(sastype); // Alloc if char(n).
if (DbTypeID.NULL == astype.ID)
{
throw new Exception("Unknown AS type in CAST: " + sastype);
}
switch (astype.ID)
{
case DbTypeID.INT:
switch (type.ID)
{
case DbTypeID.INT: // as INT
if (astype.Size > type.Size)
{
throw new Exception("CAST: source value buffer too small");
}
return(tools.AllocValue(ByteSlice.Prepare(bs, 0, astype.Size), astype));
case DbTypeID.LONG: // as INT
return(tools.AllocValue((int)tools.GetLong(bs)));
case DbTypeID.DOUBLE: // as INT
return(tools.AllocValue((int)tools.GetDouble(bs)));
case DbTypeID.DATETIME: // as INT
return(tools.AllocValue((int)tools.GetDateTime(bs).Ticks));
case DbTypeID.CHARS: // as INT
{
int to = tools.GetString(bs).NextItemToInt32(' ');
return(tools.AllocValue(to));
}
default:
throw new Exception("Cannot handle CAST value of type " + type.Name + " AS " + astype.Name);
}
break;
case DbTypeID.LONG:
switch (type.ID)
{
case DbTypeID.INT: // as LONG
return(tools.AllocValue((long)tools.GetInt(bs)));
case DbTypeID.LONG: // as LONG
if (astype.Size > type.Size)
{
throw new Exception("CAST: source value buffer too small");
}
return(tools.AllocValue(ByteSlice.Prepare(bs, 0, astype.Size), astype));
case DbTypeID.DOUBLE: // as LONG
return(tools.AllocValue((long)tools.GetDouble(bs)));
case DbTypeID.DATETIME: // as LONG
return(tools.AllocValue((long)tools.GetDateTime(bs).Ticks));
case DbTypeID.CHARS: // as LONG
{
long to = tools.GetString(bs).NextItemToInt64(' ');
return(tools.AllocValue(to));
}
default:
throw new Exception("Cannot handle CAST value of type " + type.Name + " AS " + astype.Name);
}
break;
case DbTypeID.DOUBLE:
switch (type.ID)
{
case DbTypeID.INT: // as DOUBLE
return(tools.AllocValue((double)tools.GetInt(bs)));
case DbTypeID.LONG: // as DOUBLE
return(tools.AllocValue((double)tools.GetLong(bs)));
case DbTypeID.DOUBLE: // as DOUBLE
if (astype.Size > type.Size)
{
throw new Exception("CAST: source value buffer too small");
}
return(tools.AllocValue(ByteSlice.Prepare(bs, 0, astype.Size), astype));
case DbTypeID.DATETIME: // as DOUBLE
return(tools.AllocValue((double)tools.GetDateTime(bs).Ticks));
case DbTypeID.CHARS: // as DOUBLE
{
double to = tools.GetString(bs).NextItemToDouble(' ');
return(tools.AllocValue(to));
}
default:
throw new Exception("Cannot handle CAST value of type " + type.Name + " AS " + astype.Name);
}
break;
case DbTypeID.DATETIME:
switch (type.ID)
{
case DbTypeID.INT: // as DATETIME
return(tools.AllocValue(new DateTime((long)tools.GetInt(bs))));
case DbTypeID.LONG: // as DATETIME
return(tools.AllocValue(new DateTime((long)tools.GetLong(bs))));
case DbTypeID.DOUBLE: // as DATETIME
return(tools.AllocValue(new DateTime((long)tools.GetDouble(bs))));
case DbTypeID.DATETIME: // as DATETIME
if (astype.Size > type.Size)
{
throw new Exception("CAST: source value buffer too small");
}
return(tools.AllocValue(ByteSlice.Prepare(bs, 0, astype.Size), astype));
case DbTypeID.CHARS: // as DATETIME
{
mstring to = tools.GetString(bs);
return(tools.AllocValue(DateTime.Parse(to.ToString())));
}
default:
throw new Exception("Cannot handle CAST value of type " + type.Name + " AS " + astype.Name);
}
break;
case DbTypeID.CHARS:
switch (type.ID)
{
case DbTypeID.INT: // as CHAR(n)
{
mstring ms = mstring.Prepare(tools.GetInt(bs));
return(tools.AllocValue(ms, astype.Size));
}
case DbTypeID.LONG: // as CHAR(n)
{
mstring ms = mstring.Prepare(tools.GetLong(bs));
return(tools.AllocValue(ms, astype.Size));
}
case DbTypeID.DOUBLE: // as CHAR(n)
{
mstring ms = mstring.Prepare(tools.GetDouble(bs));
return(tools.AllocValue(ms, astype.Size));
}
case DbTypeID.DATETIME: // as CHAR(n)
{
mstring ms = mstring.Prepare(tools.GetDateTime(bs).ToString());
return(tools.AllocValue(ms, astype.Size));
}
case DbTypeID.CHARS: // as CHAR(n)
if (astype.Size > type.Size)
{
//throw new Exception("CAST: source value buffer too small");
return(tools.AllocValue(tools.GetString(bs), astype.Size));
}
return(tools.AllocValue(ByteSlice.Prepare(bs, 0, astype.Size), astype));
default:
throw new Exception("Cannot handle CAST value of type " + type.Name + " AS " + astype.Name);
}
break;
default:
throw new Exception("Cannot handle CAST value of type " + type.Name + " AS " + astype.Name);
}
}
public static DbValue CAST(DbFunctionTools tools, DbFunctionArguments args)
{
#if DEBUG
//System.Diagnostics.Debugger.Launch();
#endif
string FunctionName = "CAST";
args.EnsureCount(FunctionName, 2);
DbType type;
ByteSlice bs = args[0].Eval(out type);
mstring xas = tools.GetString(args[1]);
if (!xas.StartsWith("AS "))
{
#if DEBUG
throw new Exception("Expected AS <type> in CAST, not: " + xas);
#endif
throw new Exception("Expected AS <type> in CAST");
}
mstring msastype = xas.SubstringM(3);
string sastype = msastype.ToString(); // Alloc.
sastype = DbType.NormalizeName(sastype); // Alloc if char(n).
DbType astype = DbType.Prepare(sastype); // Alloc if char(n).
if (DbTypeID.NULL == astype.ID)
{
throw new Exception("Unknown AS type in CAST: " + sastype);
}
switch (astype.ID)
{
case DbTypeID.INT:
switch (type.ID)
{
case DbTypeID.INT: // as INT
if (astype.Size > type.Size)
{
throw new Exception("CAST: source value buffer too small");
}
return tools.AllocValue(ByteSlice.Prepare(bs, 0, astype.Size), astype);
case DbTypeID.LONG: // as INT
return tools.AllocValue((int)tools.GetLong(bs));
case DbTypeID.DOUBLE: // as INT
return tools.AllocValue((int)tools.GetDouble(bs));
case DbTypeID.DATETIME: // as INT
return tools.AllocValue((int)tools.GetDateTime(bs).Ticks);
case DbTypeID.CHARS: // as INT
{
int to = tools.GetString(bs).NextItemToInt32(' ');
return tools.AllocValue(to);
}
default:
throw new Exception("Cannot handle CAST value of type " + type.Name + " AS " + astype.Name);
}
break;
case DbTypeID.LONG:
switch (type.ID)
{
case DbTypeID.INT: // as LONG
return tools.AllocValue((long)tools.GetInt(bs));
case DbTypeID.LONG: // as LONG
if (astype.Size > type.Size)
{
throw new Exception("CAST: source value buffer too small");
}
return tools.AllocValue(ByteSlice.Prepare(bs, 0, astype.Size), astype);
case DbTypeID.DOUBLE: // as LONG
return tools.AllocValue((long)tools.GetDouble(bs));
case DbTypeID.DATETIME: // as LONG
return tools.AllocValue((long)tools.GetDateTime(bs).Ticks);
case DbTypeID.CHARS: // as LONG
{
long to = tools.GetString(bs).NextItemToInt64(' ');
return tools.AllocValue(to);
}
default:
throw new Exception("Cannot handle CAST value of type " + type.Name + " AS " + astype.Name);
}
break;
case DbTypeID.DOUBLE:
switch (type.ID)
{
case DbTypeID.INT: // as DOUBLE
return tools.AllocValue((double)tools.GetInt(bs));
case DbTypeID.LONG: // as DOUBLE
return tools.AllocValue((double)tools.GetLong(bs));
case DbTypeID.DOUBLE: // as DOUBLE
if (astype.Size > type.Size)
{
throw new Exception("CAST: source value buffer too small");
}
return tools.AllocValue(ByteSlice.Prepare(bs, 0, astype.Size), astype);
case DbTypeID.DATETIME: // as DOUBLE
return tools.AllocValue((double)tools.GetDateTime(bs).Ticks);
case DbTypeID.CHARS: // as DOUBLE
{
double to = tools.GetString(bs).NextItemToDouble(' ');
return tools.AllocValue(to);
}
default:
throw new Exception("Cannot handle CAST value of type " + type.Name + " AS " + astype.Name);
}
break;
case DbTypeID.DATETIME:
switch (type.ID)
{
case DbTypeID.INT: // as DATETIME
return tools.AllocValue(new DateTime((long)tools.GetInt(bs)));
case DbTypeID.LONG: // as DATETIME
return tools.AllocValue(new DateTime((long)tools.GetLong(bs)));
case DbTypeID.DOUBLE: // as DATETIME
return tools.AllocValue(new DateTime((long)tools.GetDouble(bs)));
case DbTypeID.DATETIME: // as DATETIME
if (astype.Size > type.Size)
{
throw new Exception("CAST: source value buffer too small");
}
return tools.AllocValue(ByteSlice.Prepare(bs, 0, astype.Size), astype);
case DbTypeID.CHARS: // as DATETIME
{
mstring to = tools.GetString(bs);
return tools.AllocValue(DateTime.Parse(to.ToString()));
}
default:
throw new Exception("Cannot handle CAST value of type " + type.Name + " AS " + astype.Name);
}
break;
case DbTypeID.CHARS:
switch (type.ID)
{
case DbTypeID.INT: // as CHAR(n)
{
mstring ms = mstring.Prepare(tools.GetInt(bs));
return tools.AllocValue(ms, astype.Size);
}
case DbTypeID.LONG: // as CHAR(n)
{
mstring ms = mstring.Prepare(tools.GetLong(bs));
return tools.AllocValue(ms, astype.Size);
}
case DbTypeID.DOUBLE: // as CHAR(n)
{
mstring ms = mstring.Prepare(tools.GetDouble(bs));
return tools.AllocValue(ms, astype.Size);
}
case DbTypeID.DATETIME: // as CHAR(n)
{
mstring ms = mstring.Prepare(tools.GetDateTime(bs).ToString());
return tools.AllocValue(ms, astype.Size);
}
case DbTypeID.CHARS: // as CHAR(n)
if (astype.Size > type.Size)
{
//throw new Exception("CAST: source value buffer too small");
return tools.AllocValue(tools.GetString(bs), astype.Size);
}
return tools.AllocValue(ByteSlice.Prepare(bs, 0, astype.Size), astype);
default:
throw new Exception("Cannot handle CAST value of type " + type.Name + " AS " + astype.Name);
}
break;
default:
throw new Exception("Cannot handle CAST value of type " + type.Name + " AS " + astype.Name);
}
}
public static void DbAggregators_BIT_OR()
{
DbFunctionTools tools = new DbFunctionTools();
Random rnd = new Random();
const int rowcount = 20;
//Double.
{
Console.WriteLine("Testing DbAggregators_BIT_OR(Double)...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
double[] values = new double[rowcount];
for (int i = 0; i < fargs.Length; i++)
{
double input = rnd.NextDouble();
if (input < 0.5)
{
input = input * -1d;
}
values[i] = input;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.BIT_OR(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
double output = tools.GetDouble(bs);
byte[] expected = bitop(values, 2);
if (!compareBytes(expected, bs))
{
throw new Exception("DbAggregators_BIT_OR(Double) has failed.");
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbAggregators_BIT_OR(Int32)...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
int[] values = new int[rowcount];
for (int i = 0; i < fargs.Length; i++)
{
int input = rnd.Next(Int32.MinValue, Int32.MaxValue);
values[i] = input;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.BIT_OR(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
int output = tools.GetInt(bs);
byte[] expected = bitop(values, 2);
if (!compareBytes(expected, bs))
{
throw new Exception("DbAggregators_BIT_OR(Int32) has failed.");
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbAggregators_BIT_OR(Int64)...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
long[] values = new long[rowcount];
for (int i = 0; i < fargs.Length; i++)
{
long input = DateTime.Now.Ticks;
if (input % 2 == 0)
{
input = input * -1;
}
values[i] = input;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.BIT_OR(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
long output = tools.GetLong(bs);
byte[] expected = bitop(values, 2);
if (!compareBytes(expected, bs))
{
throw new Exception("DbAggregators_BIT_OR(Int64) has failed.");
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbAggregators_BIT_OR(char(n))...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
mstring[] values = new mstring[rowcount];
for (int i = 0; i < fargs.Length; i++)
{
int strlen = 30;
mstring input = Utils.GenString(strlen);
values[i] = input;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.BIT_OR(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
mstring output = tools.GetString(bs);
byte[] expected = bitop(values, 2);
if (!compareBytes(expected, bs))
{
throw new Exception("DbAggregators_BIT_OR(char(n)) has failed.");
}
else
{
Console.WriteLine("Expected results received.");
}
}
}
public static void DbAggregators_MIN()
{
DbFunctionTools tools = new DbFunctionTools();
Random rnd = new Random();
const int rowcount = 20;
//Double.
{
Console.WriteLine("Testing DbAggregators_MIN(Double)...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
double expected = double.MaxValue;
for (int i = 0; i < fargs.Length; i++)
{
double input = rnd.NextDouble();
if (input < 0.5)
{
input = input * -1d;
}
if (input < expected)
{
expected = input;
}
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.MIN(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
double output = tools.GetDouble(bs);
if (expected != output)
{
throw new Exception("DbAggregators_MIN(Double) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbAggregators_MIN(Int32)...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
int expected = Int32.MaxValue;
for (int i = 0; i < fargs.Length; i++)
{
int input = rnd.Next(Int32.MinValue, Int32.MaxValue);
if (input < expected)
{
expected = input;
}
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.MIN(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
int output = tools.GetInt(bs);
if (expected != output)
{
throw new Exception("DbAggregators_MIN(Int32) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbAggregators_MIN(Int64)...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
long expected = Int64.MaxValue;
for (int i = 0; i < fargs.Length; i++)
{
long input = DateTime.Now.Ticks;
if (input % 2 == 0)
{
input = input * -1;
}
if (input < expected)
{
expected = input;
}
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.MIN(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
long output = tools.GetLong(bs);
if (expected != output)
{
throw new Exception("DbAggregators_MIN(Int64) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbAggregators_MIN(char(n))...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
string expected = null;
for (int i = 0; i < fargs.Length; i++)
{
int strlen = rnd.Next(1, 100);
mstring input = Utils.GenString(strlen);
if (expected == null || input.ToString().CompareTo(expected) < 0)
{
expected = input.ToString();
}
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.MIN(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
mstring output = tools.GetString(bs);
if (expected != output.ToString())
{
throw new Exception("DbAggregators_MIN(char(n)) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
}
public static void DbAggregators_COUNTDISTINCT()
{
DbFunctionTools tools = new DbFunctionTools();
Random rnd = new Random();
const int rowcount = 20;
//Double.
{
Console.WriteLine("Testing DbAggregators_COUNTDISTINCT(Double)...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
Dictionary<double, short> dict = new Dictionary<double, short>();
double repeat = 0;
for (int i = 0; i < fargs.Length; i++)
{
double input = rnd.NextDouble();
if (input < 0.5)
{
input = input * -1d;
}
if(i == 0)
{
repeat = input;
}
if (i % 3 == 1)
{
input = repeat;
}
dict[input] = 0;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.COUNTDISTINCT(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
int output = (int)tools.GetLong(bs);
int expected = dict.Count;
if (expected != output)
{
throw new Exception("DbAggregators_COUNTDISTINCT(Double) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbAggregators_COUNTDISTINCT(Int32)...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
Dictionary<int, short> dict = new Dictionary<int, short>();
int repeat = 0;
for (int i = 0; i < fargs.Length; i++)
{
int input = rnd.Next(Int32.MinValue, Int32.MaxValue);
if (i == 0)
{
repeat = input;
}
if (i % 3 == 1)
{
input = repeat;
}
dict[input] = 0;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.COUNTDISTINCT(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
int output = (int)tools.GetLong(bs);
int expected = dict.Count;
if (expected != output)
{
throw new Exception("DbAggregators_COUNTDISTINCT(Int32) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbAggregators_COUNTDISTINCT(Int64)...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
Dictionary<long, short> dict = new Dictionary<long, short>();
long repeat = 0;
for (int i = 0; i < fargs.Length; i++)
{
long input = DateTime.Now.Ticks;
if (input % 2 == 0)
{
input = input * -1;
}
if (i == 0)
{
repeat = input;
}
if (i % 3 == 1)
{
input = repeat;
}
dict[input] = 0;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.COUNTDISTINCT(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
int output = (int)tools.GetLong(bs);
int expected = dict.Count;
if (expected != output)
{
throw new Exception("DbAggregators_COUNTDISTINCT(Int64) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbAggregators_COUNTDISTINCT(char(n))...");
DbFunctionArguments[] fargs = new DbFunctionArguments[rowcount];
Dictionary<string, short> dict = new Dictionary<string, short>();
mstring repeat = mstring.Prepare();
for (int i = 0; i < fargs.Length; i++)
{
int strlen = rnd.Next(1, 100);
mstring input = Utils.GenString(strlen);
if (i == 0)
{
repeat = input;
}
if (i % 3 == 1)
{
input = repeat;
}
dict[input.ToString()] = 0;
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input));
fargs[i] = new DbFunctionArguments(args);
}
DbValue valOutput = DbAggregators.COUNTDISTINCT(tools, new DbAggregatorArguments(fargs));
ByteSlice bs = valOutput.Eval();
int output = (int)tools.GetLong(bs);
int expected = dict.Count;
if (expected != output)
{
throw new Exception("DbAggregators_COUNTDISTINCT(char(n)) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
}
public static DbValue ATN2(DbFunctionTools tools, DbFunctionArguments args)
{
string FunctionName = "ATN2";
args.EnsureCount(FunctionName, 2);
DbType arg0type;
ByteSlice arg0 = args[0].Eval(out arg0type);
DbType arg1type;
ByteSlice arg1 = args[1].Eval(out arg1type);
if (Types.IsNullValue(arg0) || Types.IsNullValue(arg1))
{
return tools.AllocNullValue(); // Give a null, take a null.
}
double d1 = 0;
double d2 = 0;
switch (arg0type.ID)
{
case DbTypeID.INT:
{
int x = tools.GetInt(arg0);
d1 = (double)x;
}
break;
case DbTypeID.LONG:
{
long x = tools.GetLong(arg0);
d1 = (double)x;
}
break;
case DbTypeID.DOUBLE:
{
d1 = tools.GetDouble(arg0);
}
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return null; // Doesn't reach here.
}
switch (arg1type.ID)
{
case DbTypeID.INT:
{
int x = tools.GetInt(arg1);
d2 = (double)x;
}
break;
case DbTypeID.LONG:
{
long x = tools.GetLong(arg1);
d2 = (double)x;
}
break;
case DbTypeID.DOUBLE:
{
d2 = tools.GetDouble(arg1);
}
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return null; // Doesn't reach here.
}
d1 = Math.Atan2(d1, d2);
return tools.AllocValue(d1);
}
ByteSlice Conv_LongToDouble(ByteSlice value, int ResultSize, DbFunctionTools tools)
{
long x = tools.GetLong(value);
DbValue v = tools.AllocValue((double)x);
return v.Eval();
}
public static DbValue POWER(DbFunctionTools tools, DbFunctionArguments args)
{
string FunctionName = "POWER";
args.EnsureCount(FunctionName, 2);
DbType arg0type;
ByteSlice arg0 = args[0].Eval(out arg0type);
if (Types.IsNullValue(arg0))
{
return(tools.AllocNullValue()); // Give a null, take a null.
}
DbType arg1type;
ByteSlice arg1 = args[1].Eval(out arg1type);
double b = 0;
double p = 0;
switch (arg0type.ID)
{
case DbTypeID.INT:
{
int x = tools.GetInt(arg0);
b = (double)x;
}
break;
case DbTypeID.LONG:
{
long x = tools.GetLong(arg0);
b = (double)x;
}
break;
case DbTypeID.DOUBLE:
{
b = tools.GetDouble(arg0);
}
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return(null); // Doesn't reach here.
}
switch (arg1type.ID)
{
case DbTypeID.INT:
{
int x = tools.GetInt(arg1);
p = (double)x;
}
break;
case DbTypeID.LONG:
{
long x = tools.GetLong(arg1);
p = (double)x;
}
break;
case DbTypeID.DOUBLE:
{
p = tools.GetDouble(arg1);
}
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got " + arg1type.Name.ToUpper());
return(null); // Doesn't reach here.
}
double r = Math.Pow(b, p);
return(tools.AllocValue(r));
}
public static DbValue COMPARE(DbFunctionTools tools, DbFunctionArguments args)
{
string FunctionName = "COMPARE";
args.EnsureCount(FunctionName, 2);
int result;
DbType arg0type;
ByteSlice arg0 = args[0].Eval(out arg0type);
DbType arg1type;
ByteSlice arg1 = args[1].Eval(out arg1type);
if (Types.IsNullValue(arg0))
{
result = int.MaxValue;
return(tools.AllocValue(result));
}
if (Types.IsNullValue(arg1))
{
result = int.MinValue;
return(tools.AllocValue(result));
}
int i0 = 0, i1 = 0;
long l0 = 0, l1 = 0;
double d0 = 0, d1 = 0;
switch (arg0type.ID)
{
case DbTypeID.INT:
i0 = tools.GetInt(arg0);
break;
case DbTypeID.LONG:
l0 = tools.GetLong(arg0);
break;
case DbTypeID.DOUBLE:
d0 = tools.GetDouble(arg0);
break;
case DbTypeID.CHARS:
{
if (arg1type.ID != DbTypeID.CHARS && arg1type.ID != DbTypeID.DATETIME)
{
args.Expected(FunctionName, 0, "input CHAR(n) or DATETIME, got " + arg1type.Name.ToUpper());
return(null); // Doesn't reach here.
}
if (arg1type.ID == DbTypeID.CHARS)
{
for (int i = 1; ; i += 2)
{
bool b1end = (i + 2 > arg0.Length) || (arg0[i] == 0 && arg0[i + 1] == 0);
bool b2end = (i + 2 > arg1.Length) || (arg1[i] == 0 && arg1[i + 1] == 0);
if (b1end)
{
if (b2end)
{
result = 0;
break;
}
result = -1;
break;
}
else if (b2end)
{
result = 1;
break;
}
int diff = Types.UTF16BytesToLowerChar(arg0[i], arg0[i + 1])
- Types.UTF16BytesToLowerChar(arg1[i], arg1[i + 1]);
if (0 != diff)
{
char ch0 = Types.UTF16BytesToChar(arg0[i], arg0[i + 1]);
char ch1 = Types.UTF16BytesToChar(arg1[i], arg1[i + 1]);
if (!Char.IsLetter(ch0) || !Char.IsLetter(ch1))
{
result = ch0 - ch1;
}
result = diff;
break;
}
}
}
else
{
string sdt = tools.GetString(arg0).ToString();
DateTime dt0 = DateTime.Parse(sdt);
DateTime dt1 = tools.GetDateTime(arg1);
result = dt0.CompareTo(dt1);
}
return(tools.AllocValue(result));
}
break;
case DbTypeID.DATETIME:
{
if (arg1type.ID != DbTypeID.CHARS && arg1type.ID != DbTypeID.DATETIME)
{
args.Expected(FunctionName, 0, "input CHAR(n) or DATETIME, got " + arg1type.Name.ToUpper());
return(null); // Doesn't reach here.
}
if (arg1type.ID == DbTypeID.DATETIME)
{
DateTime dt0 = tools.GetDateTime(arg0);
DateTime dt1 = tools.GetDateTime(arg1);
result = dt0.CompareTo(dt1);
}
else
{
DateTime dt0 = tools.GetDateTime(arg0);
string sdt = tools.GetString(arg1).ToString();
DateTime dt1 = DateTime.Parse(sdt);
result = dt0.CompareTo(dt1);
}
return(tools.AllocValue(result));
}
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got1 " + arg0type.Name.ToUpper());
return(null); // Doesn't reach here.
}
switch (arg1type.ID)
{
case DbTypeID.INT:
i1 = tools.GetInt(arg1);
break;
case DbTypeID.LONG:
l1 = tools.GetLong(arg1);
break;
case DbTypeID.DOUBLE:
d1 = tools.GetDouble(arg1);
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got2 " + arg1type.Name.ToUpper());
return(null); // Doesn't reach here.
}
switch (arg0type.ID)
{
case DbTypeID.INT:
switch (arg1type.ID)
{
case DbTypeID.INT:
result = i0.CompareTo(i1);
break;
case DbTypeID.LONG:
result = ((long)i0).CompareTo(l1);
break;
case DbTypeID.DOUBLE:
result = ((double)i0).CompareTo(d1);
break;
default:
return(null); // Should never happen.
}
break;
case DbTypeID.LONG:
switch (arg1type.ID)
{
case DbTypeID.INT:
result = l0.CompareTo((long)i1);
break;
case DbTypeID.LONG:
result = l0.CompareTo(l1);
break;
case DbTypeID.DOUBLE:
result = ((double)l0).CompareTo(d1);
break;
default:
return(null); // Should never happen.
}
break;
case DbTypeID.DOUBLE:
switch (arg1type.ID)
{
case DbTypeID.INT:
result = d0.CompareTo((double)i1);
break;
case DbTypeID.LONG:
result = d0.CompareTo((double)l1);
break;
case DbTypeID.DOUBLE:
result = d0.CompareTo(d1);
break;
default:
return(null); // Should never happen.
}
break;
default:
return(null); // Should never happen.
}
return(tools.AllocValue(result));
}
public static DbValue IIF(DbFunctionTools tools, DbFunctionArguments args)
{
string FunctionName = "IIF";
args.EnsureCount(FunctionName, 3);
DbType arg0type;
ByteSlice arg0 = args[0].Eval(out arg0type);
DbType arg1type;
ByteSlice arg1 = args[1].Eval(out arg1type);
DbType arg2type;
ByteSlice arg2 = args[2].Eval(out arg2type);
bool truecond;
if (Types.IsNullValue(arg0))
{
truecond = false;
}
else if (DbTypeID.INT == arg0type.ID)
{
truecond = 0 != tools.GetInt(arg0);
}
else if (DbTypeID.LONG == arg0type.ID)
{
truecond = 0 != tools.GetLong(arg0);
}
else if (DbTypeID.DOUBLE == arg0type.ID)
{
truecond = 0 != tools.GetDouble(arg0);
}
else
{
bool allzero = true;
for (int i = 1; i < arg0.Length; i++)
{
if (arg0[i] != 0)
{
allzero = false;
break;
}
}
truecond = !allzero;
}
byte[] resultbuf = new byte[arg1.Length > arg2.Length ? arg1.Length : arg2.Length];
DbType resulttype;
if (truecond)
{
resulttype = DbType.Prepare(resultbuf.Length, arg1type.ID);
for (int i = 0; i < arg1.Length; i++)
{
resultbuf[i] = arg1[i];
}
}
else
{
resulttype = DbType.Prepare(resultbuf.Length, arg2type.ID);
for (int i = 0; i < arg2.Length; i++)
{
resultbuf[i] = arg2[i];
}
}
return tools.AllocValue(ByteSlice.Prepare(resultbuf), resulttype);
}
public static void DbFunctions_ARITHMETIC()
{
DbFunctionTools tools = new DbFunctionTools();
Random rnd = new Random();
//Int32.
{
Console.WriteLine("Testing DbFunctions.ADD(Int32, Int32)...");
int input1 = rnd.Next(Int32.MinValue, Int32.MaxValue);
int input2 = rnd.Next(Int32.MinValue, Int32.MaxValue);
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.ADD(tools, fargs);
ByteSlice bs = valOutput.Eval();
int output = tools.GetInt(bs);
int expected = input1 + input2;
if (expected != output)
{
throw new Exception("DbFunctions.ADD(Int32, Int32) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.SUB(Int32, Int32)...");
int input1 = rnd.Next(Int32.MinValue, Int32.MaxValue);
int input2 = rnd.Next(Int32.MinValue, Int32.MaxValue);
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.SUB(tools, fargs);
ByteSlice bs = valOutput.Eval();
int output = tools.GetInt(bs);
int expected = input1 - input2;
if (expected != output)
{
throw new Exception("DbFunctions.SUB(Int32, Int32) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.MUL(Int32, Int32)...");
int input1 = rnd.Next(Int32.MinValue, Int32.MaxValue);
int input2 = rnd.Next(Int32.MinValue, Int32.MaxValue);
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.MUL(tools, fargs);
ByteSlice bs = valOutput.Eval();
int output = tools.GetInt(bs);
int expected = input1 * input2;
if (expected != output)
{
throw new Exception("DbFunctions.MUL(Int32, Int32) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.DIV(Int32, Int32)...");
int input1 = rnd.Next(Int32.MinValue, Int32.MaxValue);
int input2 = rnd.Next(Int32.MinValue, Int32.MaxValue);
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.DIV(tools, fargs);
ByteSlice bs = valOutput.Eval();
int output = tools.GetInt(bs);
int expected = input1 / input2;
if (expected != output)
{
throw new Exception("DbFunctions.DIV(Int32, Int32) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
// Int32, Int64
{
Console.WriteLine("Testing DbFunctions.ADD(Int32, Int64)...");
int input1 = rnd.Next(Int32.MinValue, Int32.MaxValue);
long input2 = (long)rnd.Next(Int32.MinValue, Int32.MaxValue) * rnd.Next();
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.ADD(tools, fargs);
ByteSlice bs = valOutput.Eval();
long output = tools.GetLong(bs);
long expected = input1 + input2;
if (expected != output)
{
throw new Exception("DbFunctions.ADD(Int32, Int64) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
//Int64.
{
Console.WriteLine("Testing DbFunctions.ADD(Int64, Int64)...");
long input1 = (long)rnd.Next(Int32.MinValue, Int32.MaxValue) * rnd.Next();
long input2 = (long)rnd.Next(Int32.MinValue, Int32.MaxValue) * rnd.Next();
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.ADD(tools, fargs);
ByteSlice bs = valOutput.Eval();
long output = tools.GetLong(bs);
long expected = input1 + input2;
if (expected != output)
{
throw new Exception("DbFunctions.ADD(Int64, Int64) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.SUB(Int64, Int64)...");
long input1 = (long)rnd.Next(Int32.MinValue, Int32.MaxValue) * rnd.Next();
long input2 = (long)rnd.Next(Int32.MinValue, Int32.MaxValue) * rnd.Next();
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.SUB(tools, fargs);
ByteSlice bs = valOutput.Eval();
long output = tools.GetLong(bs);
long expected = input1 - input2;
if (expected != output)
{
throw new Exception("DbFunctions.SUB(Int64, Int64) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.MUL(Int64, Int64)...");
long input1 = (long)rnd.Next(Int32.MinValue, Int32.MaxValue) * rnd.Next();
long input2 = (long)rnd.Next(Int32.MinValue, Int32.MaxValue) * rnd.Next();
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.MUL(tools, fargs);
ByteSlice bs = valOutput.Eval();
long output = tools.GetLong(bs);
long expected = input1 * input2;
if (expected != output)
{
throw new Exception("DbFunctions.MUL(Int64, Int64) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.DIV(Int64, Int64)...");
long input1 = (long)rnd.Next(Int32.MinValue, Int32.MaxValue) * rnd.Next();
long input2 = (long)rnd.Next(Int32.MinValue, Int32.MaxValue) * rnd.Next();
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.DIV(tools, fargs);
ByteSlice bs = valOutput.Eval();
long output = tools.GetLong(bs);
long expected = input1 / input2;
if (expected != output)
{
throw new Exception("DbFunctions.DIV(Int64, Int64) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
// Int64, Int32
{
Console.WriteLine("Testing DbFunctions.SUB(Int64, Int32)...");
long input1 = (long)rnd.Next(Int32.MinValue, Int32.MaxValue) * rnd.Next();
int input2 = rnd.Next(Int32.MinValue, Int32.MaxValue);
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.SUB(tools, fargs);
ByteSlice bs = valOutput.Eval();
long output = tools.GetLong(bs);
long expected = input1 - input2;
if (expected != output)
{
throw new Exception("DbFunctions.SUB(Int64, Int32) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
//double.
{
Console.WriteLine("Testing DbFunctions.ADD(double, double)...");
double input1 = rnd.NextDouble() * rnd.Next(int.MinValue, int.MaxValue);
double input2 = rnd.NextDouble() * rnd.Next(int.MinValue, int.MaxValue);
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.ADD(tools, fargs);
ByteSlice bs = valOutput.Eval();
double output = tools.GetDouble(bs);
double expected = input1 + input2;
if (expected != output)
{
throw new Exception("DbFunctions.ADD(double, double) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.SUB(double, double)...");
double input1 = rnd.NextDouble() * rnd.Next(int.MinValue, int.MaxValue);
double input2 = rnd.NextDouble() * rnd.Next(int.MinValue, int.MaxValue);
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.SUB(tools, fargs);
ByteSlice bs = valOutput.Eval();
double output = tools.GetDouble(bs);
double expected = input1 - input2;
if (expected != output)
{
throw new Exception("DbFunctions.SUB(double, double) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.MUL(double, double)...");
double input1 = rnd.NextDouble() * rnd.Next(int.MinValue, int.MaxValue);
double input2 = rnd.NextDouble() * rnd.Next(int.MinValue, int.MaxValue);
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.MUL(tools, fargs);
ByteSlice bs = valOutput.Eval();
double output = tools.GetDouble(bs);
double expected = input1 * input2;
if (expected != output)
{
throw new Exception("DbFunctions.MUL(double, double) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
{
Console.WriteLine("Testing DbFunctions.DIV(double, double)...");
double input1 = rnd.NextDouble() * rnd.Next(int.MinValue, int.MaxValue);
double input2 = rnd.NextDouble() * rnd.Next(int.MinValue, int.MaxValue);
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.DIV(tools, fargs);
ByteSlice bs = valOutput.Eval();
double output = tools.GetDouble(bs);
double expected = input1 / input2;
if (expected != output)
{
throw new Exception("DbFunctions.DIV(double, double) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
// double, Int32
{
Console.WriteLine("Testing DbFunctions.MUL(double, Int32)...");
double input1 = rnd.NextDouble() * rnd.Next(int.MinValue, int.MaxValue);
int input2 = rnd.Next(int.MinValue, int.MaxValue);
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.MUL(tools, fargs);
ByteSlice bs = valOutput.Eval();
double output = tools.GetDouble(bs);
double expected = input1 * input2;
if (expected != output)
{
throw new Exception("DbFunctions.MUL(double, Int32) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
// Int64, double
{
Console.WriteLine("Testing DbFunctions.DIV(Int64, double)...");
long input1 = rnd.Next(int.MinValue, int.MaxValue) * rnd.Next();
double input2 = rnd.NextDouble() * rnd.Next(int.MinValue, int.MaxValue);
List<DbValue> args = new List<DbValue>();
args.Add(tools.AllocValue(input1));
args.Add(tools.AllocValue(input2));
DbFunctionArguments fargs = new DbFunctionArguments(args);
DbValue valOutput = DbFunctions.DIV(tools, fargs);
ByteSlice bs = valOutput.Eval();
double output = tools.GetDouble(bs);
double expected = input1 / input2;
if (expected != output)
{
throw new Exception("DbFunctions.DIV(Int64, double) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString());
}
else
{
Console.WriteLine("Expected results received.");
}
}
}
public static DbValue MOD(DbFunctionTools tools, DbFunctionArguments args)
{
string FunctionName = "MOD";
args.EnsureCount(FunctionName, 2);
DbType arg0type;
ByteSlice arg0 = args[0].Eval(out arg0type);
if (Types.IsNullValue(arg0))
{
return(tools.AllocNullValue()); // Give a null, take a null.
}
DbType arg1type;
ByteSlice arg1 = args[1].Eval(out arg1type);
if (Types.IsNullValue(arg1))
{
return(tools.AllocNullValue()); // Give a null, take a null.
}
int i0, i1 = 0;
long l0, l1 = 0;
double d0, d1 = 0;
switch (arg1type.ID)
{
case DbTypeID.INT:
i1 = tools.GetInt(arg1);
break;
case DbTypeID.LONG:
l1 = tools.GetLong(arg1);
break;
case DbTypeID.DOUBLE:
d1 = tools.GetDouble(arg1);
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got " + arg1type.Name.ToUpper());
return(null); // Doesn't reach here.
}
if (i1 == 0 && l1 == 0 && d1 == 0)
{
args.Expected(FunctionName, 0, "Division by zero");
return(null);
}
switch (arg0type.ID)
{
case DbTypeID.INT:
{
i0 = tools.GetInt(arg0);
switch (arg1type.ID)
{
case DbTypeID.INT:
{
int rem = i0 % i1;
return(tools.AllocValue(rem));
}
break;
case DbTypeID.LONG:
{
long rem = (long)i0 % l1;
return(tools.AllocValue(rem));
}
break;
case DbTypeID.DOUBLE:
{
double rem = (double)i0 % d1;
return(tools.AllocValue(rem));
}
break;
}
}
break;
case DbTypeID.LONG:
{
l0 = tools.GetLong(arg0);
switch (arg1type.ID)
{
case DbTypeID.INT:
{
long rem = l0 % (long)i1;
return(tools.AllocValue(rem));
}
break;
case DbTypeID.LONG:
{
long rem = l0 % l1;
return(tools.AllocValue(rem));
}
break;
case DbTypeID.DOUBLE:
{
double rem = (double)l0 % d1;
return(tools.AllocValue(rem));
}
break;
}
}
break;
case DbTypeID.DOUBLE:
{
d0 = tools.GetDouble(arg0);
switch (arg1type.ID)
{
case DbTypeID.INT:
{
double rem = d0 % (double)i1;
return(tools.AllocValue(rem));
}
break;
case DbTypeID.LONG:
{
double rem = d0 % (double)l1;
return(tools.AllocValue(rem));
}
break;
case DbTypeID.DOUBLE:
{
double rem = d0 % d1;
return(tools.AllocValue(rem));
}
break;
}
}
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return(null); // Doesn't reach here.
}
return(null); // Doesn't reach here.
}
public static DbValue IIF(DbFunctionTools tools, DbFunctionArguments args)
{
string FunctionName = "IIF";
args.EnsureCount(FunctionName, 3);
DbType arg0type;
ByteSlice arg0 = args[0].Eval(out arg0type);
DbType arg1type;
ByteSlice arg1 = args[1].Eval(out arg1type);
DbType arg2type;
ByteSlice arg2 = args[2].Eval(out arg2type);
bool truecond;
if (Types.IsNullValue(arg0))
{
truecond = false;
}
else if (DbTypeID.INT == arg0type.ID)
{
truecond = 0 != tools.GetInt(arg0);
}
else if (DbTypeID.LONG == arg0type.ID)
{
truecond = 0 != tools.GetLong(arg0);
}
else if (DbTypeID.DOUBLE == arg0type.ID)
{
truecond = 0 != tools.GetDouble(arg0);
}
else
{
bool allzero = true;
for (int i = 1; i < arg0.Length; i++)
{
if (arg0[i] != 0)
{
allzero = false;
break;
}
}
truecond = !allzero;
}
byte[] resultbuf = new byte[arg1.Length > arg2.Length ? arg1.Length : arg2.Length];
DbType resulttype;
if (truecond)
{
resulttype = DbType.Prepare(resultbuf.Length, arg1type.ID);
for (int i = 0; i < arg1.Length; i++)
{
resultbuf[i] = arg1[i];
}
}
else
{
resulttype = DbType.Prepare(resultbuf.Length, arg2type.ID);
for (int i = 0; i < arg2.Length; i++)
{
resultbuf[i] = arg2[i];
}
}
return(tools.AllocValue(ByteSlice.Prepare(resultbuf), resulttype));
}
public static DbValue MOD(DbFunctionTools tools, DbFunctionArguments args)
{
string FunctionName = "MOD";
args.EnsureCount(FunctionName, 2);
DbType arg0type;
ByteSlice arg0 = args[0].Eval(out arg0type);
if (Types.IsNullValue(arg0))
{
return tools.AllocNullValue(); // Give a null, take a null.
}
DbType arg1type;
ByteSlice arg1 = args[1].Eval(out arg1type);
if (Types.IsNullValue(arg1))
{
return tools.AllocNullValue(); // Give a null, take a null.
}
int i0, i1 = 0;
long l0, l1 = 0;
double d0, d1 = 0;
switch (arg1type.ID)
{
case DbTypeID.INT:
i1 = tools.GetInt(arg1);
break;
case DbTypeID.LONG:
l1 = tools.GetLong(arg1);
break;
case DbTypeID.DOUBLE:
d1 = tools.GetDouble(arg1);
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got " + arg1type.Name.ToUpper());
return null; // Doesn't reach here.
}
if (i1 == 0 && l1 == 0 && d1 == 0)
{
args.Expected(FunctionName, 0, "Division by zero");
return null;
}
switch (arg0type.ID)
{
case DbTypeID.INT:
{
i0 = tools.GetInt(arg0);
switch (arg1type.ID)
{
case DbTypeID.INT:
{
int rem = i0 % i1;
return tools.AllocValue(rem);
}
break;
case DbTypeID.LONG:
{
long rem = (long)i0 % l1;
return tools.AllocValue(rem);
}
break;
case DbTypeID.DOUBLE:
{
double rem = (double)i0 % d1;
return tools.AllocValue(rem);
}
break;
}
}
break;
case DbTypeID.LONG:
{
l0 = tools.GetLong(arg0);
switch (arg1type.ID)
{
case DbTypeID.INT:
{
long rem = l0 % (long)i1;
return tools.AllocValue(rem);
}
break;
case DbTypeID.LONG:
{
long rem = l0 % l1;
return tools.AllocValue(rem);
}
break;
case DbTypeID.DOUBLE:
{
double rem = (double)l0 % d1;
return tools.AllocValue(rem);
}
break;
}
}
break;
case DbTypeID.DOUBLE:
{
d0 = tools.GetDouble(arg0);
switch (arg1type.ID)
{
case DbTypeID.INT:
{
double rem = d0 % (double)i1;
return tools.AllocValue(rem);
}
break;
case DbTypeID.LONG:
{
double rem = d0 % (double)l1;
return tools.AllocValue(rem);
}
break;
case DbTypeID.DOUBLE:
{
double rem = d0 % d1;
return tools.AllocValue(rem);
}
break;
}
}
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got " + arg0type.Name.ToUpper());
return null; // Doesn't reach here.
}
return null; // Doesn't reach here.
}
public static DbValue COMPARE(DbFunctionTools tools, DbFunctionArguments args)
{
string FunctionName = "COMPARE";
args.EnsureCount(FunctionName, 2);
int result;
DbType arg0type;
ByteSlice arg0 = args[0].Eval(out arg0type);
DbType arg1type;
ByteSlice arg1 = args[1].Eval(out arg1type);
if (Types.IsNullValue(arg0))
{
result = int.MaxValue;
return tools.AllocValue(result);
}
if (Types.IsNullValue(arg1))
{
result = int.MinValue;
return tools.AllocValue(result);
}
int i0 = 0, i1 = 0;
long l0 = 0, l1 = 0;
double d0 = 0, d1 = 0;
switch (arg0type.ID)
{
case DbTypeID.INT:
i0 = tools.GetInt(arg0);
break;
case DbTypeID.LONG:
l0 = tools.GetLong(arg0);
break;
case DbTypeID.DOUBLE:
d0 = tools.GetDouble(arg0);
break;
case DbTypeID.CHARS:
{
if (arg1type.ID != DbTypeID.CHARS && arg1type.ID != DbTypeID.DATETIME)
{
args.Expected(FunctionName, 0, "input CHAR(n) or DATETIME, got " + arg1type.Name.ToUpper());
return null; // Doesn't reach here.
}
if (arg1type.ID == DbTypeID.CHARS)
{
for (int i = 1; ; i += 2)
{
bool b1end = (i + 2 > arg0.Length) || (arg0[i] == 0 && arg0[i + 1] == 0);
bool b2end = (i + 2 > arg1.Length) || (arg1[i] == 0 && arg1[i + 1] == 0);
if (b1end)
{
if (b2end)
{
result = 0;
break;
}
result = -1;
break;
}
else if (b2end)
{
result = 1;
break;
}
int diff = Types.UTF16BytesToLowerChar(arg0[i], arg0[i + 1])
- Types.UTF16BytesToLowerChar(arg1[i], arg1[i + 1]);
if (0 != diff)
{
char ch0 = Types.UTF16BytesToChar(arg0[i], arg0[i + 1]);
char ch1 = Types.UTF16BytesToChar(arg1[i], arg1[i + 1]);
if (!Char.IsLetter(ch0) || !Char.IsLetter(ch1))
{
result = ch0 - ch1;
}
result = diff;
break;
}
}
}
else
{
string sdt = tools.GetString(arg0).ToString();
DateTime dt0 = DateTime.Parse(sdt);
DateTime dt1 = tools.GetDateTime(arg1);
result = dt0.CompareTo(dt1);
}
return tools.AllocValue(result);
}
break;
case DbTypeID.DATETIME:
{
if (arg1type.ID != DbTypeID.CHARS && arg1type.ID != DbTypeID.DATETIME)
{
args.Expected(FunctionName, 0, "input CHAR(n) or DATETIME, got " + arg1type.Name.ToUpper());
return null; // Doesn't reach here.
}
if (arg1type.ID == DbTypeID.DATETIME)
{
DateTime dt0 = tools.GetDateTime(arg0);
DateTime dt1 = tools.GetDateTime(arg1);
result = dt0.CompareTo(dt1);
}
else
{
DateTime dt0 = tools.GetDateTime(arg0);
string sdt = tools.GetString(arg1).ToString();
DateTime dt1 = DateTime.Parse(sdt);
result = dt0.CompareTo(dt1);
}
return tools.AllocValue(result);
}
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got1 " + arg0type.Name.ToUpper());
return null; // Doesn't reach here.
}
switch (arg1type.ID)
{
case DbTypeID.INT:
i1 = tools.GetInt(arg1);
break;
case DbTypeID.LONG:
l1 = tools.GetLong(arg1);
break;
case DbTypeID.DOUBLE:
d1 = tools.GetDouble(arg1);
break;
default:
args.Expected(FunctionName, 0, "input INT, LONG or DOUBLE, got2 " + arg1type.Name.ToUpper());
return null; // Doesn't reach here.
}
switch (arg0type.ID)
{
case DbTypeID.INT:
switch (arg1type.ID)
{
case DbTypeID.INT:
result = i0.CompareTo(i1);
break;
case DbTypeID.LONG:
result = ((long)i0).CompareTo(l1);
break;
case DbTypeID.DOUBLE:
result = ((double)i0).CompareTo(d1);
break;
default:
return null; // Should never happen.
}
break;
case DbTypeID.LONG:
switch (arg1type.ID)
{
case DbTypeID.INT:
result = l0.CompareTo((long)i1);
break;
case DbTypeID.LONG:
result = l0.CompareTo(l1);
break;
case DbTypeID.DOUBLE:
result = ((double)l0).CompareTo(d1);
break;
default:
return null; // Should never happen.
}
break;
case DbTypeID.DOUBLE:
switch (arg1type.ID)
{
case DbTypeID.INT:
result = d0.CompareTo((double)i1);
break;
case DbTypeID.LONG:
result = d0.CompareTo((double)l1);
break;
case DbTypeID.DOUBLE:
result = d0.CompareTo(d1);
break;
default:
return null; // Should never happen.
}
break;
default:
return null; // Should never happen.
}
return tools.AllocValue(result);
}