public static void Main(string [] args)
{
int datatype;
// create an HDF file named "example.h5" and use (i.e. open) it
HDFql.Execute("CREATE FILE example.h5");
HDFql.Execute("USE FILE example.h5");
// create an attribute named "attrib" of type float
HDFql.Execute("CREATE ATTRIBUTE attrib AS FLOAT");
// get datatype of attribute "attrib" and populate HDFql default cursor with it
HDFql.Execute("SHOW DATATYPE attrib");
// move HDFql default cursor to first position
HDFql.CursorFirst();
// retrieve datatype from HDFql default cursor
datatype = (int)HDFql.CursorGetInt();
// print message according to datatype
if (datatype == HDFql.TinyInt || datatype == HDFql.VarTinyInt)
{
System.Console.WriteLine("Datatype is a char");
}
else if (datatype == HDFql.UnsignedTinyInt || datatype == HDFql.UnsignedVarTinyInt)
{
System.Console.WriteLine("Datatype is an unsigned char");
}
else if (datatype == HDFql.SmallInt || datatype == HDFql.VarSmallInt)
{
System.Console.WriteLine("Datatype is a short");
}
else if (datatype == HDFql.UnsignedSmallInt || datatype == HDFql.UnsignedVarSmallInt)
{
System.Console.WriteLine("Datatype is an unsigned short");
}
else if (datatype == HDFql.Int || datatype == HDFql.VarInt)
{
System.Console.WriteLine("Datatype is an int");
}
else if (datatype == HDFql.UnsignedInt || datatype == HDFql.UnsignedVarInt)
{
System.Console.WriteLine("Datatype is an unsigned int");
}
else if (datatype == HDFql.BigInt || datatype == HDFql.VarBigInt)
{
System.Console.WriteLine("Datatype is a long long");
}
else if (datatype == HDFql.UnsignedBigInt || datatype == HDFql.UnsignedVarBigInt)
{
System.Console.WriteLine("Datatype is an unsigned long long");
}
else if (datatype == HDFql.Float || datatype == HDFql.VarFloat)
{
System.Console.WriteLine("Datatype is a float");
}
else if (datatype == HDFql.Double || datatype == HDFql.VarDouble)
{
System.Console.WriteLine("Datatype is a double");
}
else if (datatype == HDFql.Char || datatype == HDFql.VarChar)
{
System.Console.WriteLine("Datatype is a char");
}
else if (datatype == HDFql.Opaque)
{
System.Console.WriteLine("Datatype is an opaque");
}
else
{
System.Console.WriteLine("Unknown datatype");
}
}
/// <summary>
/// Retrieves all of the image data from the .h5 file and
/// initializes all of the data attributes.
/// </summary>
/// <param name="file">The .h5 file specified by the user</param>
private void Initialize(string file)
{
// Get the relative path of the file since only relative paths work as of right now.
// TODO: Make absolute paths work.
string relativePath = GetRelativePath(file, System.IO.Directory.GetCurrentDirectory());
fileName = file;
// Open the .h5 file specified by the user
HDFql.Execute("USE FILE " + relativePath);
// Create myCursor "myCursor" and use it
myCursor = new HDFqlCursor();
HDFql.CursorUse(myCursor);
string path = "";
HDFql.Execute("SHOW DATASET LIKE {50e35494-f4dd-4122-96f8-4d47c927abe5}/resultarray/inputdata WHERE DATATYPE IS INT");
if (HDFql.CursorNext() == HDFql.Success)
{
path = HDFql.CursorGetChar();
}
else
{
HDFql.Execute("SHOW DATASET LIKE inputdata WHERE DATATYPE IS INT");
if (HDFql.CursorNext() == HDFql.Success)
{
path = HDFql.CursorGetChar();
}
else
{
HDFql.Execute("SHOW DATASET LIKE Cube/resultarray/inputdata WHERE DATATYPE IS INT");
if (HDFql.CursorNext() == HDFql.Success)
{
path = HDFql.CursorGetChar();
}
}
}
// Populate cursor "myCursor" with size of dataset "example_dataset" and display it
if (path == "{50e35494-f4dd-4122-96f8-4d47c927abe5}/resultarray/inputdata")
{
HDFql.Execute("USE GROUP {50e35494-f4dd-4122-96f8-4d47c927abe5}");
HDFql.Execute("USE GROUP resultarray");
HDFql.Execute("USE DATASET inputdata");
}
else if (path == "inputdata")
{
HDFql.Execute("USE DATASET inputdata");
}
else
{
HDFql.Execute("USE GROUP Cube");
HDFql.Execute("USE GROUP resultarray");
HDFql.Execute("USE DATASET inputdata");
}
HDFql.Execute("SHOW SIZE inputdata");
HDFql.CursorFirst();
Console.WriteLine("Dataset size: {0}", HDFql.CursorGetInt());
HDFql.Execute("SHOW DIMENSION inputdata");
HDFql.CursorFirst();
Console.WriteLine("Dataset size: {0}", HDFql.CursorGetInt());
// Console.WriteLine lambda count, should be 78
HDFql.CursorFirst(null);
lambdaCount = HDFql.CursorGetInt() != null ? (int)HDFql.CursorGetInt() : 0;
Console.WriteLine("inputdata dimension 0 (Λ): " + lambdaCount);
// Console.WriteLine the the x and y dimensions of the dataset
HDFql.CursorAbsolute(null, 2);
int xDimension = HDFql.CursorGetInt() != null ? (int)HDFql.CursorGetInt() : 0;
Console.WriteLine("inputdata dimension 2 (X): " + xDimension);
HDFql.CursorAbsolute(null, 3);
int yDimension = HDFql.CursorGetInt() != null ? (int)HDFql.CursorGetInt() : 0;
Console.WriteLine("inputdata dimension 3 (Y): " + yDimension);
// Set the size of the data array to be lambdaCount * xDimension * yDimension
data = new float[lambdaCount, xDimension, yDimension];
// Register variable "data" for subsequent use (by HDFql)
HDFql.VariableRegister(data);
// Select (y.e. read) dataset into variable "data"
HDFql.Execute("SELECT FROM inputdata INTO MEMORY " + HDFql.VariableGetNumber(data));
// Unregister variable "data" as it is no longer used/needed (by HDFql)
HDFql.VariableUnregister(data);
// Set the length and width of the textures
imageWidth = yDimension;
imageHeight = xDimension;
FindMinAndMaxValue();
}