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FeatureTableRepositoryInFile.h

Go to the documentation of this file.

#ifndef Impala_Persistency_FeatureTableRepositoryInFile_h
#define Impala_Persistency_FeatureTableRepositoryInFile_h

#include "Persistency/RepositoryInFileSystem.h"
#include "Core/Feature/FeatureTable.h"
#include "Persistency/FeatureLocator.h"

namespace Impala
{
namespace Persistency
{


class FeatureTableRepositoryInFile
{
public:

    typedef Core::Feature::FeatureTable FeatureTable;

    FeatureTableRepositoryInFile()
    {
    }

    bool
    Exists(const FeatureLocator& loc)
    {
        String dir = GetDir(loc);
        String ext = ".tab";
        // todo : kill the .tab for after data is renamed on file system
        //if (FileNameExt(loc.GetFeatureString()) == "txt")
        //    ext = "";
        File file = RepFS().GetFile(loc, dir, loc.GetFeatureString() + ext,
                                    false, true);
        return file.Valid();
    }

    FeatureTable*
    Get(const FeatureLocator& loc)
    {
        FeatureTable* res = new FeatureTable(loc.GetFeatureDef());
        String dir = GetDir(loc);
        String ext = ".tab";
        // todo : kill the .tab for after data is renamed on file system
        //if (FileNameExt(loc.GetFeatureString()) == "txt")
        //    ext = "";
        File file = RepFS().GetFile(loc, dir, loc.GetFeatureString() + ext,
                                    false, false);
        if (!file.Valid())
            return 0;
        Read(res, file);
        return res;
    }

    void
    Add(const FeatureLocator& loc, FeatureTable* tab)
    {
        String dir = GetDir(loc);
        File file = RepFS().GetFile(loc, dir, loc.GetFeatureString() + ".tab",
                                    true, false);
        Write(tab, file);
    }

private:

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

    String
    GetDir(const FeatureLocator& loc)
    {
        String dir = loc.GetTopString();
        dir = FileNameConcat(dir, loc.GetWalkType());
        if (!loc.GetIsCodebook())
            dir = FileNameConcat(dir, loc.GetFeatureName());
        dir = FileNameConcat(dir, loc.GetContainer());
        if (loc.GetIsPartial())
            dir = FileNameConcat(dir, "part_" + MakeString(loc.GetStartFrame()));
        return dir;
    }

    ILOG_VAR_DEC;
};

ILOG_VAR_INIT(FeatureTableRepositoryInFile, Impala.Persistency);

} // namespace Persistency
} // namespace Impala

#endif

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