/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project .
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License , v . 2 . 0 . If a copy of the MPL was not distributed with this
* file , You can obtain one at http : //mozilla.org/MPL/2.0/.
*/
#pragma once
#include <memory>
#include <string_view>
#include <salhelper/thread.hxx>
#include <rtl/ustring.hxx>
#include <rtl/ref.hxx>
#include <osl/mutex.hxx>
#include <document.hxx>
#include <rtl/strbuf.hxx>
#include <atomic>
#include <vector>
//#include <map>
#include <orcus/csv_parser.hpp>
class SvStream;
class ScDBData;
namespace sc {
class DataTransformation;
class ExternalDataSource;
class CSVFetchThread : public salhelper::Thread
{
ScDocument& mrDocument;
OUString maURL;
std::atomic<bool > mbTerminate;
orcus::csv::parser_config maConfig;
std::vector<std::shared_ptr<sc::DataTransformation>> maDataTransformations;
std::function<void ()> maImportFinishedHdl;
std::exception_ptr mpLastException;
bool mbIsParseError;
public :
CSVFetchThread(ScDocument& rDoc, OUString , std::function<void ()> aImportFinishedHdl,
std::vector<std::shared_ptr<sc::DataTransformation>>&& mrDataTransformations);
virtual ~CSVFetchThread() override;
void RequestTerminate();
bool IsRequestedTerminate();
void Terminate();
void EndThread();
bool IsParseError() { return mbIsParseError; }
auto GetLastException() { return mpLastException; }
virtual void execute() override;
};
/**
* Abstract class for all data provider .
*
*/
class DataProvider
{
protected :
/**
* If true make the threaded import deterministic for the tests .
*/
bool mbDeterministic;
sc::ExternalDataSource& mrDataSource;
public :
DataProvider(sc::ExternalDataSource& rDataSource);
virtual ~DataProvider();
virtual void Import() = 0 ;
virtual const OUString& GetURL() const = 0 ;
static std::unique_ptr<SvStream> FetchStreamFromURL(const OUString&, OStringBuffer& rBuffer);
void setDeterministic();
};
class CSVDataProvider : public DataProvider
{
rtl::Reference<CSVFetchThread> mxCSVFetchThread;
ScDocument* mpDocument;
ScDocumentUniquePtr mpDoc;
void Refresh();
public :
CSVDataProvider (ScDocument* pDoc, sc::ExternalDataSource& rDataSource);
virtual ~CSVDataProvider() override;
virtual void Import() override;
const OUString& GetURL() const override;
void ImportFinished();
};
/**
* This class handles the copying of the data from the imported
* temporary document to the actual document . Additionally , in the future
* we may decide to store data transformations in this class .
*
* In addition this class also handles how to deal with excess data by for example extending the ScDBData or by only showing the first or last entries .
*
* TODO : move the DataProvider : : WriteToDoc here
*
*/
class ScDBDataManager
{
OUString maDBName;
ScDocument* mpDoc;
public :
ScDBDataManager(OUString aDBName, ScDocument* pDoc);
~ScDBDataManager();
void SetDatabase(const OUString& rDBName);
ScDBData* getDBData();
void WriteToDoc(ScDocument& rDoc);
};
class DataProviderFactory
{
private :
static bool isInternalDataProvider(std::u16string_view rProvider);
public :
static std::shared_ptr<DataProvider> getDataProvider(ScDocument* pDoc, sc::ExternalDataSource& rDataSource);
};
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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