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// File: XmlMDataStd_ExpressionDriver.cxx
// Created: Wed Sep 12 14:07:32 2001
// Author: Julia DOROVSKIKH
// Copyright: Open Cascade 2001
// History:
#include <XmlMDataStd_ExpressionDriver.ixx>
#include <TDataStd_Expression.hxx>
#include <TDataStd_Variable.hxx>
#include <TDF_ListIteratorOfAttributeList.hxx>
#include <XmlObjMgt.hxx>
IMPLEMENT_DOMSTRING (VariablesString, "variables")
//=======================================================================
//function : XmlMDataStd_ExpressionDriver
//purpose : Constructor
//=======================================================================
XmlMDataStd_ExpressionDriver::XmlMDataStd_ExpressionDriver
(const Handle(CDM_MessageDriver)& theMsgDriver)
: XmlMDF_ADriver (theMsgDriver, NULL)
{}
//=======================================================================
//function : NewEmpty
//purpose :
//=======================================================================
Handle(TDF_Attribute) XmlMDataStd_ExpressionDriver::NewEmpty() const
{
return (new TDataStd_Expression());
}
//=======================================================================
//function : Paste
//purpose : persistent -> transient (retrieve)
//=======================================================================
Standard_Boolean XmlMDataStd_ExpressionDriver::Paste
(const XmlObjMgt_Persistent& theSource,
const Handle(TDF_Attribute)& theTarget,
XmlObjMgt_RRelocationTable& theRelocTable) const
{
Handle(TDataStd_Expression) aC =
Handle(TDataStd_Expression)::DownCast(theTarget);
const XmlObjMgt_Element& anElem = theSource;
Standard_Integer aNb;
TCollection_ExtendedString aMsgString;
// expression
TCollection_ExtendedString aString;
if (!XmlObjMgt::GetExtendedString (theSource, aString))
{
WriteMessage("error retrieving ExtendedString for type TDataStd_Expression");
return Standard_False;
}
aC->SetExpression(aString);
// variables
XmlObjMgt_DOMString aDOMStr = anElem.getAttribute(::VariablesString());
if (aDOMStr != NULL)
{
Standard_CString aVs = Standard_CString(aDOMStr.GetString());
// first variable
if (!XmlObjMgt::GetInteger(aVs, aNb))
{
aMsgString = TCollection_ExtendedString
("XmlMDataStd_ExpressionDriver: Cannot retrieve reference on first variable from \"")
+ aDOMStr + "\"";
WriteMessage (aMsgString);
return Standard_False;
}
Standard_Integer i = 1;
while (aNb > 0)
{
Handle(TDF_Attribute) aV;
if (theRelocTable.IsBound(aNb))
aV = Handle(TDataStd_Variable)::DownCast(theRelocTable.Find(aNb));
else
{
aV = new TDataStd_Variable;
theRelocTable.Bind(aNb, aV);
}
aC->GetVariables().Append(aV);
// next variable
if (!XmlObjMgt::GetInteger(aVs, aNb)) aNb = 0;
i++;
}
}
return Standard_True;
}
//=======================================================================
//function : Paste
//purpose : transient -> persistent (store)
//=======================================================================
void XmlMDataStd_ExpressionDriver::Paste
(const Handle(TDF_Attribute)& theSource,
XmlObjMgt_Persistent& theTarget,
XmlObjMgt_SRelocationTable& theRelocTable) const
{
Handle(TDataStd_Expression) aC =
Handle(TDataStd_Expression)::DownCast(theSource);
XmlObjMgt_Element& anElem = theTarget;
Standard_Integer aNb;
Handle(TDF_Attribute) TV;
// expression
XmlObjMgt::SetExtendedString (theTarget, aC->Name());
// variables
Standard_Integer nbvar = aC->GetVariables().Extent();
if (nbvar >= 1)
{
TCollection_AsciiString aGsStr;
TDF_ListIteratorOfAttributeList it;
Standard_Integer index = 0;
for (it.Initialize(aC->GetVariables()); it.More(); it.Next())
{
index++;
TV = it.Value();
if (!TV.IsNull())
{
aNb = theRelocTable.FindIndex(TV);
if (aNb == 0)
{
aNb = theRelocTable.Add(TV);
}
aGsStr += TCollection_AsciiString(aNb) + " ";
}
else aGsStr += "0 ";
}
anElem.setAttribute(::VariablesString(), aGsStr.ToCString());
}
}
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