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FeatureListRepositoryInFile.h

Go to the documentation of this file.

#ifndef Impala_Persistency_FeatureListRepositoryInFile_h
#define Impala_Persistency_FeatureListRepositoryInFile_h

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

namespace Impala
{
namespace Persistency
{


class FeatureListRepositoryInFile
{
public:

    typedef Core::Feature::FeatureList FeatureList;

    FeatureListRepositoryInFile()
    {
    }

    bool
    Exists(const FeatureLocator& loc)
    {
        String dir = GetDir(loc);
        File file = RepFS().GetFile(loc, dir, loc.GetFeatureString(),
                                    false, true);
        return file.Valid();
    }

    FeatureList*
    Get(const FeatureLocator& loc)
    {
        String dir = GetDir(loc);
        File file = (StringStartsWith(loc.GetFeatureString(), ".."))
            ? RepFS().GetFile(loc, "", loc.GetFeatureString(), false, true)
            : RepFS().GetFile(loc, dir, loc.GetFeatureString(), false, true);
        if (!file.Valid())
            return 0;
        FeatureList* res = new FeatureList();
        file.ReadStrings(std::back_inserter(*res));
        return res;
    }

    void
    Add(const FeatureLocator& loc, FeatureList* keyList)
    {
        String dir = GetDir(loc);
        File file = RepFS().GetFile(loc, dir, loc.GetFeatureString(),
                                    true, false);
        if (!file.Valid())
            return;
        file.WriteStrings(keyList->begin(), keyList->end());
    }

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 (partial)
        //    dir = PathJoin(dir, "part_" + MakeString(startFrameOrFile));
        return dir;
    }

    ILOG_VAR_DEC;
};

ILOG_VAR_INIT(FeatureListRepositoryInFile, Impala.Persistency);

} // namespace Persistency
} // namespace Impala

#endif

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