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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "BlobAdapter.h"
#include <qpid/Exception.h>
namespace qpid {
namespace store {
namespace ms_sql {
void
BlobAdapter::extractBuff()
{
// To give a valid Buffer back, lock the safearray, obtaining a pointer to
// the actual data. Record the pointer in the Buffer so the destructor
// knows to unlock the safearray.
if (buff.getPointer() == 0) {
char *blob;
SafeArrayAccessData(this->parray, (void **)&blob);
qpid::framing::Buffer lockedBuff(blob, buff.getSize());
buff = lockedBuff;
}
}
BlobAdapter::~BlobAdapter()
{
// If buff's pointer is set, the safearray is locked, so unlock it
if (buff.getPointer() != 0)
SafeArrayUnaccessData(this->parray);
}
BlobAdapter::operator qpid::framing::Buffer& ()
{
extractBuff();
return buff;
}
BlobAdapter::operator qpid::framing::FieldTable& ()
{
extractBuff();
fields.decode(buff);
return fields;
}
}}} // namespace qpid::store::ms_sql
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