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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed 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.txt
*
* 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.
*
*=========================================================================*/
#ifndef GDCMULCONNECTIONCALLBACK_H
#define GDCMULCONNECTIONCALLBACK_H
#include "gdcmTypes.h" //to be able to export the class
namespace gdcm
{
class DataSet;
namespace network
{
///When a dataset comes back from a query/move/etc, the result can either be
///stored entirely in memory, or could be stored on disk. This class provides
///a mechanism to indicate what the ULConnectionManager should do with datasets
///that are produced through query results.
///The ULConnectionManager will call the HandleDataSet function during the course
///of receiving datasets. Particular implementations should fill in what that
///function does, including updating progress, etc.
///NOTE: since cmove requires that multiple event loops be employed,
///the callback function MUST set mHandledDataSet to true.
///otherwise, the cmove event loop handler will not know data was received, and
///proceed to end the loop prematurely.
class GDCM_EXPORT ULConnectionCallback {
bool mHandledDataSet;
protected:
bool mImplicit;
//inherited callbacks MUST call this function for the cmove loop to work properly
void DataSetHandled() { mHandledDataSet = true; }
public:
ULConnectionCallback():mHandledDataSet(false),mImplicit(true){}
virtual ~ULConnectionCallback() = default; //placeholder for inherited objects
virtual void HandleDataSet(const DataSet& inDataSet) = 0;
virtual void HandleResponse(const DataSet& inDataSet) = 0;
bool DataSetHandles() const { return mHandledDataSet; }
void ResetHandledDataSet() { mHandledDataSet = false; }
void SetImplicitFlag( const bool imp ) { mImplicit = imp; }
};
}
}
#endif //GDCMULCONNECTIONCALLBACK_H
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