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0023850: TDataStd_ByteArray is too slow on storage on disk

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Optimization of a byte-array for XML persistence (binary persistence is ok).
A possible bug is corrected (size of an array is extended a little).
Same improvement for storage of a TDataStd_TreeNode.
Improvement of speed of storage of several Ocaf attributes in XML file format.
Also, format of storage of a double value is extended to keep 17 digits after a decimal point (it was used only 15 digits before).
Several draw-commands are added to manipulate the basic Ocaf attributes:
BooleanArray
BooleanList
IntegerList
RealList
A test-script for OCAF document successfully saved and opened from disk in XML file format.
+ 1 is added to keep '\0'
Removed several spaces in source files.
PLib_LocalArray is renamed to NCollection_LocalArray and became a template. It is used as a local array for Standard_Character in XML OCAF drivers, and as a local array of Standard_Real in PLib package.
Small correction of test case for this fix
This commit is contained in:
vro
2013-05-23 12:09:09 +04:00
parent 5a77460e4a
commit f7b4312f04
19 changed files with 739 additions and 132 deletions
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14
src/XmlMDataStd/XmlMDataStd_RealListDriver.cxx
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@@ -21,6 +21,7 @@
#include <XmlMDataStd_RealListDriver.ixx>
#include <TDataStd_RealList.hxx>
#include <TColStd_ListIteratorOfListOfReal.hxx>
#include <NCollection_LocalArray.hxx>
#include <XmlObjMgt.hxx>
IMPLEMENT_DOMSTRING (FirstIndexString, "first")
@@ -135,18 +136,19 @@ void XmlMDataStd_RealListDriver::Paste(const Handle(TDF_Attribute)& theSource,
Handle(TDataStd_RealList) aRealList = Handle(TDataStd_RealList)::DownCast(theSource);
Standard_Integer anU = aRealList->Extent();
TCollection_AsciiString aValueStr;
theTarget.Element().setAttribute(::LastIndexString(), anU);
if (anU >= 1)
{
// Allocation of 25 chars for each double value including the space:
// An example: -3.1512678732195273e+020
Standard_Integer iChar = 0;
NCollection_LocalArray<Standard_Character> str(25 * anU + 1);
TColStd_ListIteratorOfListOfReal itr(aRealList->List());
for (; itr.More(); itr.Next())
{
aValueStr += TCollection_AsciiString(itr.Value());
aValueStr += ' ';
const Standard_Real& realValue = itr.Value();
iChar += Sprintf(&(str[iChar]), "%.17g ", realValue);
}
XmlObjMgt::SetStringValue (theTarget, (Standard_Character*)str, Standard_True);
}
// No occurrence of '&', '<' and other irregular XML characters
XmlObjMgt::SetStringValue (theTarget, aValueStr.ToCString(), Standard_True);
}