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/**
* Orthanc - A Lightweight, RESTful DICOM Store
* Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
* Belgium
*
* Copyright (c) 2012 The Chromium Authors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc., the name of the CHU of Liege,
* nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**/
#include "../PrecompiledHeaders.h"
#include "StatementReference.h"
#include "../OrthancException.h"
#include <cassert>
#include <glog/logging.h>
#include "sqlite3.h"
namespace Orthanc
{
namespace SQLite
{
bool StatementReference::IsRoot() const
{
return root_ == NULL;
}
StatementReference::StatementReference()
{
root_ = NULL;
refCount_ = 0;
statement_ = NULL;
assert(IsRoot());
}
StatementReference::StatementReference(sqlite3* database,
const char* sql)
{
if (database == NULL || sql == NULL)
{
throw OrthancException(ErrorCode_ParameterOutOfRange);
}
root_ = NULL;
refCount_ = 0;
int error = sqlite3_prepare_v2(database, sql, -1, &statement_, NULL);
if (error != SQLITE_OK)
{
throw OrthancException("SQLite: " + std::string(sqlite3_errmsg(database)));
}
assert(IsRoot());
}
StatementReference::StatementReference(StatementReference& other)
{
refCount_ = 0;
if (other.IsRoot())
{
root_ = &other;
}
else
{
root_ = other.root_;
}
root_->refCount_++;
statement_ = root_->statement_;
assert(!IsRoot());
}
StatementReference::~StatementReference()
{
if (IsRoot())
{
if (refCount_ != 0)
{
// There remain references to this object. We cannot throw
// an exception because:
// http://www.parashift.com/c++-faq/dtors-shouldnt-throw.html
LOG(ERROR) << "Bad value of the reference counter";
}
else if (statement_ != NULL)
{
sqlite3_finalize(statement_);
}
}
else
{
if (root_->refCount_ == 0)
{
// There remain references to this object. We cannot throw
// an exception because:
// http://www.parashift.com/c++-faq/dtors-shouldnt-throw.html
LOG(ERROR) << "Bad value of the reference counter";
}
else
{
root_->refCount_--;
}
}
}
uint32_t StatementReference::GetReferenceCount() const
{
return refCount_;
}
}
}
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