/// <summary>
/// CTOR that creates a "Value" type argument from a given Expression Value
/// </summary>
/// <param name = "expVal">the source expression value</param>
protected internal Argument(GuiExpressionEvaluator.ExpVal expVal)
{
_type = ConstInterface.ARG_TYPE_VALUE;
_fld = null;
_exp = null;
_skip = false;
if (expVal.IsNull)
{
_val = null;
}
else
{
_val = expVal.ToMgVal();
if (expVal.Attr == StorageAttribute.DOTNET &&
(String.IsNullOrEmpty(_val) || !BlobType.isValidDotNetBlob(_val)))
{
_dnObjectCollectionKey = DNManager.getInstance().DNObjectsCollection.CreateEntry(null);
_val = BlobType.createDotNetBlobPrefix(_dnObjectCollectionKey);
if (expVal.DnMemberInfo != null)
{
DNManager.getInstance().DNObjectsCollection.Update(_dnObjectCollectionKey,
expVal.DnMemberInfo.value);
}
// add this key into 'tempDNObjectsCollectionKeys', so that it can be freed later.
ClientManager.Instance.getTempDNObjectCollectionKeys().Add(_dnObjectCollectionKey);
}
}
_valueIsNull = (_val == null);
_valueAttr = expVal.Attr;
}
/// <summary>
/// update the result into expression DNObjectsCollection Entry and modifies Expval to contain the blob prefix
/// </summary>
/// <param name = "expVal"></param>
private void ConvertExpValForDotNet(ExpressionEvaluator.ExpVal expVal)
{
if (expVal.Attr == StorageAttribute.DOTNET)
{
// update the value at DNObjectsCollection Key. This is updated into Expression DNObjectsCollection key, so no need to Cast.
DNManager.getInstance().DNObjectsCollection.Update(_dnObjectCollectionKey, expVal.DnMemberInfo.value);
bool isNull = (expVal.DnMemberInfo.value == null);
expVal.Nullify();
expVal.Init(StorageAttribute.DOTNET, isNull, BlobType.createDotNetBlobPrefix(_dnObjectCollectionKey));
}
}
/// <summary>
/// set dot net parameters as arguments for the event
/// </summary>
/// <param name = "parameters"></param>
internal void setDotNetArgs(object[] parameters)
{
ExpressionEvaluator.ExpVal[] argsList = new ExpressionEvaluator.ExpVal[parameters.Length];
for (int i = 0; i < parameters.Length; i++)
{
int key = DNManager.getInstance().DNObjectsCollection.CreateEntry(null);
String blobString = BlobType.createDotNetBlobPrefix(key);
DNManager.getInstance().DNObjectsCollection.Update(key, parameters[i]);
argsList[i] = new ExpressionEvaluator.ExpVal(StorageAttribute.DOTNET,
parameters[i] == null, blobString);
}
//create the string for the blob
ArgumentsList args = new ArgumentsList(argsList);
setArgList(args);
}
/// <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);
}