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 * This file incorporates work covered by the following license notice:
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#ifndef INCLUDED_PACKAGE_SOURCE_XSTOR_SWITCHPERSISTENCESTREAM_HXX
#define INCLUDED_PACKAGE_SOURCE_XSTOR_SWITCHPERSISTENCESTREAM_HXX

#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/io/XSeekable.hpp>
#include <com/sun/star/io/XTruncate.hpp>
#include <com/sun/star/io/XStream.hpp>
#include <com/sun/star/embed/XTransactedObject.hpp>
#include <com/sun/star/beans/XPropertySetInfo.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/ucb/XSimpleFileAccess.hpp>
#include <com/sun/star/io/XAsyncOutputMonitor.hpp>
#include <osl/mutex.hxx>
#include <cppuhelper/implbase.hxx>

// SwitchablePersistenceStream

// Allows to switch the stream persistence on the fly. The target
// stream ( if not filled by the implementation ) MUST have the same
// size as the original one!

struct SPStreamData_Impl;
class SwitchablePersistenceStream
        : public ::cppu::WeakImplHelper <
                                        css::io::XStream,
                                        css::io::XInputStream,
                                        css::io::XOutputStream,
                                        css::io::XTruncate,
                                        css::io::XSeekable,
                                        css::io::XAsyncOutputMonitor >
{
    ::osl::Mutex    m_aMutex;

    const css::uno::Reference< css::uno::XComponentContext > m_xContext;

    SPStreamData_Impl* m_pStreamData;

    void CloseAll_Impl();

public:

    SwitchablePersistenceStream(
        const css::uno::Reference< css::uno::XComponentContext >& xContext,
        const css::uno::Reference< css::io::XStream >& xStream );

    SwitchablePersistenceStream(
        const css::uno::Reference< css::uno::XComponentContext >& xContext,
        const css::uno::Reference< css::io::XInputStream >& xInStream );

    virtual ~SwitchablePersistenceStream() override;

    void SwitchPersistenceTo( const css::uno::Reference< css::io::XStream >& xStream );

    void SwitchPersistenceTo( const css::uno::Reference< css::io::XInputStream >& xInputStream );

    void CopyAndSwitchPersistenceTo( const css::uno::Reference< css::io::XStream >& xStream );

// css::io::XStream
    virtual css::uno::Reference< css::io::XInputStream > SAL_CALL getInputStream(  ) throw (css::uno::RuntimeException, std::exception) override;
    virtual css::uno::Reference< css::io::XOutputStream > SAL_CALL getOutputStream(  ) throw (css::uno::RuntimeException, std::exception) override;

// css::io::XInputStream
    virtual ::sal_Int32 SAL_CALL readBytes( css::uno::Sequence< ::sal_Int8 >& aData, ::sal_Int32 nBytesToRead ) throw (css::io::NotConnectedException, css::io::BufferSizeExceededException, css::io::IOException, css::uno::RuntimeException, std::exception) override;
    virtual ::sal_Int32 SAL_CALL readSomeBytes( css::uno::Sequence< ::sal_Int8 >& aData, ::sal_Int32 nMaxBytesToRead ) throw (css::io::NotConnectedException, css::io::BufferSizeExceededException, css::io::IOException, css::uno::RuntimeException, std::exception) override;
    virtual void SAL_CALL skipBytes( ::sal_Int32 nBytesToSkip ) throw (css::io::NotConnectedException, css::io::BufferSizeExceededException, css::io::IOException, css::uno::RuntimeException, std::exception) override;
    virtual ::sal_Int32 SAL_CALL available(  ) throw (css::io::NotConnectedException, css::io::IOException, css::uno::RuntimeException, std::exception) override;
    virtual void SAL_CALL closeInput(  ) throw (css::io::NotConnectedException, css::io::IOException, css::uno::RuntimeException, std::exception) override;

// css::io::XOutputStream
    virtual void SAL_CALL writeBytes( const css::uno::Sequence< ::sal_Int8 >& aData ) throw (css::io::NotConnectedException, css::io::BufferSizeExceededException, css::io::IOException, css::uno::RuntimeException, std::exception) override;
    virtual void SAL_CALL flush(  ) throw (css::io::NotConnectedException, css::io::BufferSizeExceededException, css::io::IOException, css::uno::RuntimeException, std::exception) override;
    virtual void SAL_CALL closeOutput(  ) throw (css::io::NotConnectedException, css::io::BufferSizeExceededException, css::io::IOException, css::uno::RuntimeException, std::exception) override;

// css::io::XTruncate
    virtual void SAL_CALL truncate(  ) throw (css::io::IOException, css::uno::RuntimeException, std::exception) override;

// css::io::XSeekable
    virtual void SAL_CALL seek( ::sal_Int64 location ) throw (css::lang::IllegalArgumentException, css::io::IOException, css::uno::RuntimeException, std::exception) override;
    virtual ::sal_Int64 SAL_CALL getPosition(  ) throw (css::io::IOException, css::uno::RuntimeException, std::exception) override;
    virtual ::sal_Int64 SAL_CALL getLength(  ) throw (css::io::IOException, css::uno::RuntimeException, std::exception) override;

// css::io::XAsyncOutputMonitor
    virtual void SAL_CALL waitForCompletion(  ) throw (css::io::IOException, css::uno::RuntimeException, std::exception) override;

};

#endif // INCLUDED_PACKAGE_SOURCE_XSTOR_SWITCHPERSISTENCESTREAM_HXX

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