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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/.
*/
#include "Blob.hxx"
#include "FConnection.hxx"
#include "connectivity/dbexception.hxx"
using namespace ::connectivity::firebird;
using namespace ::cppu;
using namespace ::osl;
using namespace ::com::sun::star;
using namespace ::com::sun::star::io;
using namespace ::com::sun::star::sdbc;
using namespace ::com::sun::star::uno;
Blob::Blob(isc_db_handle* pDatabaseHandle,
isc_tr_handle* pTransactionHandle,
ISC_QUAD& aBlobID):
Blob_BASE(m_aMutex),
m_pDatabaseHandle(pDatabaseHandle),
m_pTransactionHandle(pTransactionHandle),
m_blobID(aBlobID),
m_blobHandle(0),
m_bBlobOpened(false),
m_blobData(0)
{
}
void Blob::ensureBlobIsOpened()
throw(SQLException)
{
MutexGuard aGuard(m_aMutex);
if (m_bBlobOpened)
return;
ISC_STATUS aErr;
aErr = isc_open_blob2(m_statusVector,
m_pDatabaseHandle,
m_pTransactionHandle,
&m_blobHandle,
&m_blobID,
0,
NULL);
if (aErr)
OConnection::evaluateStatusVector(m_statusVector,
"isc_open_blob2",
*this);
}
void SAL_CALL Blob::disposing(void)
{
MutexGuard aGuard(m_aMutex);
if (m_bBlobOpened)
{
ISC_STATUS aErr;
aErr = isc_close_blob(m_statusVector,
&m_blobHandle);
if (aErr)
{
try
{
OConnection::evaluateStatusVector(m_statusVector,
"isc_close_blob",
*this);
}
catch (SQLException e)
{
// we cannot throw any exceptions here anyway
SAL_WARN("connectivity.firebird", "isc_close_blob failed\n" <<
e.Message);
}
}
}
Blob_BASE::disposing();
}
sal_Int64 SAL_CALL Blob::length()
throw(SQLException, RuntimeException)
{
MutexGuard aGuard(m_aMutex);
checkDisposed(Blob_BASE::rBHelper.bDisposed);
ensureBlobIsOpened();
char aBlobItems[] = {
isc_info_blob_total_length
};
char aResultBuffer[20];
isc_blob_info(m_statusVector,
&m_blobHandle,
sizeof(aBlobItems),
aBlobItems,
sizeof(aResultBuffer),
aResultBuffer);
OConnection::evaluateStatusVector(m_statusVector,
"isc_blob_info",
*this);
if (*aResultBuffer == isc_info_blob_total_length)
{
short aResultLength = (short) isc_vax_integer(aResultBuffer, 2);
return isc_vax_integer(aResultBuffer+2, aResultLength);
}
return 0;
}
uno::Sequence< sal_Int8 > SAL_CALL Blob::getBytes(sal_Int64 aPosition, sal_Int32 aLength)
throw(SQLException, RuntimeException)
{
MutexGuard aGuard(m_aMutex);
checkDisposed(Blob_BASE::rBHelper.bDisposed);
ensureBlobIsOpened();
sal_Int64 aTotalLength = length();
if (!(aPosition + aLength < aTotalLength))
{
throw SQLException("Byte array requested outwith valid range", *this, OUString(), 1, Any() );
}
if (aTotalLength != m_blobData.getLength())
{
m_blobData = uno::Sequence< sal_Int8 >(aTotalLength);
char* pArray = (char*) m_blobData.getArray();
sal_Int64 aBytesRead = 0;
unsigned short aLengthRead; // The amount read in in a isc_get_segment call
ISC_STATUS aErr;
do
{
aErr = isc_get_segment(m_statusVector,
&m_blobHandle,
&aLengthRead,
aTotalLength - aBytesRead,
pArray + aBytesRead);
}
while (aErr == 0 || m_statusVector[1] == isc_segment);
// Denotes either sucessful read, or only part of segment read successfully.
if (aErr)
{
m_blobData = uno::Sequence< sal_Int8 >(0);
OConnection::evaluateStatusVector(m_statusVector,
"isc_get_segment",
*this);
}
}
if (aLength<aTotalLength)
{
uno::Sequence< sal_Int8 > aRet(aLength);
memcpy(aRet.getArray(), m_blobData.getArray() + aLength, aLength);
return aRet;
}
else
{
return m_blobData; // TODO: subsequence
}
}
uno::Reference< XInputStream > SAL_CALL Blob::getBinaryStream()
throw(SQLException, RuntimeException)
{
// MutexGuard aGuard(m_aMutex);
// checkDisposed(Blob_BASE::rBHelper.bDisposed);
// ensureBlobIsOpened();
::dbtools::throwFeatureNotImplementedException("Blob::positionOfBlob", *this);
return NULL;
}
sal_Int64 SAL_CALL Blob::position(const uno::Sequence< sal_Int8 >& rPattern,
sal_Int64 aStart)
throw(SQLException, RuntimeException)
{
// MutexGuard aGuard(m_aMutex);
// checkDisposed(Blob_BASE::rBHelper.bDisposed);
// ensureBlobIsOpened();
(void) rPattern;
(void) aStart;
::dbtools::throwFeatureNotImplementedException("Blob::positionOfBlob", *this);
return 0;
}
sal_Int64 SAL_CALL Blob::positionOfBlob(const uno::Reference< XBlob >& rPattern,
sal_Int64 aStart)
throw(SQLException, RuntimeException)
{
// MutexGuard aGuard(m_aMutex);
// checkDisposed(Blob_BASE::rBHelper.bDisposed);
// ensureBlobIsOpened();
(void) rPattern;
(void) aStart;
::dbtools::throwFeatureNotImplementedException("Blob::positionOfBlob", *this);
return 0;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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