|| || || || || ||

---

Mpeg7DocRepositoryInFile.h

Go to the documentation of this file.

#ifndef Impala_Persistency_Mpeg7DocRepositoryInFile_h
#define Impala_Persistency_Mpeg7DocRepositoryInFile_h

#include "Persistency/RepositoryInFileSystem.h"
#include "Core/VideoSet/Mpeg7Doc.h"
#include "Persistency/Mpeg7DocLocator.h"

namespace Impala
{
namespace Persistency
{


class Mpeg7DocRepositoryInFile
{
public:

    typedef Core::VideoSet::Mpeg7Doc Mpeg7Doc;

    Mpeg7DocRepositoryInFile()
    {
    }

    bool
    Exists(const Mpeg7DocLocator& loc)
    {
        String dir = GetDir(loc, false);
        File f = RepFS().GetFile(loc, dir, loc.GetName(), false, true);
        return f.Valid();
    }

    Mpeg7Doc*
    Get(const Mpeg7DocLocator& loc)
    {
        String dir = GetDir(loc, false);
        File f = RepFS().GetFile(loc, dir, loc.GetName(), false, false);
        Util::IOBuffer* buf = f.GetReadBuffer(true, "");
        // Mpeg7Doc ctor will delete buf
        Mpeg7Doc* res = new Mpeg7Doc(loc.GetName(), buf, loc.GetFrameRateNum(),
                                     loc.GetFrameRateDen());
        return res;
    }

    void
    Add(const Mpeg7DocLocator& loc, Mpeg7Doc* doc)
    {
        String dir = GetDir(loc, false);
        File f = RepFS().GetFile(loc, dir, loc.GetName(), true, false);
        Util::IOBuffer* ioBuf = f.GetWriteBuffer();
        if (! ioBuf)
            return;
        doc->ExportXml(ioBuf);
        delete ioBuf;
    }

    void
    Delete(const Mpeg7DocLocator& loc)
    {
        if (loc.GetContainer() == "ALL")
        {
            String dir = GetDir(loc, true);
            RepFS().DeleteDir(loc, dir);
        }
        else
        {
            String dir = GetDir(loc, false);
            File file = RepFS().GetFile(loc, dir, loc.GetName(), true, true);
            file.Delete();
        }
    }

private:

    RepositoryInFileSystem&
    RepFS()
    {
        return RepositoryInFileSystem::GetInstance();
    }

    String
    GetDir(const Mpeg7DocLocator& loc, bool forAll)
    {
        String dir("unknown");
        if (loc.GetDocType() == Mpeg7DocLocator::MPEG7_PLAIN)
            dir = "";
        else if (loc.GetDocType() == Mpeg7DocLocator::MPEG7_SHOT)
            dir = "MetaData/shots/";
        else if (loc.GetDocType() == Mpeg7DocLocator::MPEG7_CONCEPT)
            dir = "MetaData/similarities/";
        else if (loc.GetDocType() == Mpeg7DocLocator::MPEG7_ANNOTATION)
            dir = "MetaData/annotations/";
        else if (loc.GetDocType() == Mpeg7DocLocator::MPEG7_FEATURE)
            dir = "MetaData/features/";
        else
            ILOG_ERROR("GetDir: unknown type in locator");

        if (forAll)
            return dir;

        dir = FileNameConcat(dir, loc.GetContainer());
        return dir;
    }

    ILOG_VAR_DEC;
};

ILOG_VAR_INIT(Mpeg7DocRepositoryInFile, Impala.Persistency);

} // namespace Persistency
} // namespace Impala

#endif

---