/// <summary>
/// ComputeAndRefresh DataColumn
/// </summary>
/// <param name="colID"></param>
/// <param name="removeHandler"></param>
/// <param name="colVal"></param>
private void ComputeAndRefreshColumn(int colID, bool removeHandler, ref object colVal)
{
Field field = null;
if (colID > 0)
{
int fldIdx = DVDataTableObj.GetFldIdx(colID);
field = (Field)DVControl.getForm().getTask().DataView.getField(fldIdx);
}
//First column is 'Isn'. Give a call to core to fetch PosCache's current Isn. And store it
if (colID == 0)
{
colVal = (int)((TaskBase)DVControl.getForm().getTask()).GetDVControlPosition();
}
else if (field != null)
{
String value = String.Empty;
Object dnValue = null;
bool isNull = false;
//get field's value by
((TaskBase)field.getTask()).getFieldDisplayValue(field, ref value, ref isNull);
dnValue = DNConvert.convertMagicToDotNet(value, field.getType(), typeof(Object));
colVal = dnValue;
}
}
/// <summary>
/// converts Alpha/Unicode values to Blob and vice versa.
/// </summary>
/// <param name="value"></param>
/// <param name="srcAttr"></param>
/// <param name="expectedType"></param>
/// <returns></returns>
internal static String convertArgs(String value, StorageAttribute srcAttr, StorageAttribute expectedType)
{
int key;
object dotNetObj = null;
bool invalidArg = false;
if (srcAttr != StorageAttribute.DOTNET &&
expectedType == StorageAttribute.DOTNET)
{
//Convert Magic To DotNet
key = _tempTableKey;
dotNetObj = DNConvert.convertMagicToDotNet(value, srcAttr,
DNConvert.getDefaultDotNetTypeForMagicType(value, srcAttr));
DNManager.getInstance().DNObjectsCollection.Update(key, dotNetObj);
value = BlobType.createDotNetBlobPrefix(key);
}
else if (srcAttr == StorageAttribute.DOTNET &&
expectedType != StorageAttribute.DOTNET &&
expectedType != StorageAttribute.NONE)
{
//Convert DotNet to Magic
key = BlobType.getKey(value);
if (key != 0)
{
dotNetObj = DNManager.getInstance().DNObjectsCollection.GetDNObj(key);
value = DNConvert.convertDotNetToMagic(dotNetObj, expectedType);
}
}
else
{
switch (expectedType)
{
case StorageAttribute.ALPHA:
case StorageAttribute.UNICODE:
if (srcAttr == StorageAttribute.BLOB)
{
if (BlobType.isValidBlob(value))
{
value = BlobType.getString(value);
}
}
else if (!StorageAttributeCheck.IsTypeAlphaOrUnicode(srcAttr))
{
invalidArg = true;
}
break;
case StorageAttribute.NUMERIC:
case StorageAttribute.DATE:
case StorageAttribute.TIME:
if (!StorageAttributeCheck.isTypeNumeric(srcAttr))
{
invalidArg = true;
}
break;
case StorageAttribute.BLOB:
if (StorageAttributeCheck.IsTypeAlphaOrUnicode(srcAttr))
{
char contentType = srcAttr == StorageAttribute.ALPHA
? BlobType.CONTENT_TYPE_ANSI
: BlobType.CONTENT_TYPE_UNICODE;
value = BlobType.createFromString(value, contentType);
}
else if (!StorageAttributeCheck.isTypeBlob(srcAttr))
{
invalidArg = true;
}
break;
}
//If there is mismatch in attribute, take default value of expectd argument.
if (invalidArg)
{
value = FieldDef.getMagicDefaultValue(expectedType);
}
}
return(value);
}