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/* -*- 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 <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;
bool mbTerminate;
osl::Mutex maMtxTerminate;
orcus::csv::parser_config maConfig;
std::vector<std::shared_ptr<sc::DataTransformation>> maDataTransformations;
std::function<void()> maImportFinishedHdl;
public:
CSVFetchThread(ScDocument& rDoc, const OUString&, std::function<void()> aImportFinishedHdl,
std::vector<std::shared_ptr<sc::DataTransformation>>&& mrDataTransformations);
virtual ~CSVFetchThread() override;
void RequestTerminate();
bool IsRequestedTerminate();
void Terminate();
void EndThread();
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(const OUString& rDBName, 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);
static std::vector<OUString> getDataProviders();
};
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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