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builddir/spatialindex-1.8.5/include/spatialindex/capi/DataStream.h

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+/******************************************************************************
+ * Project:  libsidx - A C API wrapper around libspatialindex
+ * Purpose:	 Declarations to support stream loading via C API
+ * Author:   Howard Butler, hobu.inc@gmail.com
+ ******************************************************************************
+ * Copyright (c) 2009, Howard Butler
+ *
+ * All rights reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+******************************************************************************/
+ 
+#pragma once
+
+#include "sidx_export.h"
+
+class SIDX_DLL DataStream : public SpatialIndex::IDataStream
+{
+public:
+    DataStream(int (*readNext)(SpatialIndex::id_type* id, double **pMin, double **pMax, uint32_t *nDimension, const uint8_t **pData, uint32_t *nDataLength));
+    ~DataStream();
+
+    SpatialIndex::IData* getNext();
+    bool hasNext();
+
+    uint32_t size();
+    void rewind();
+
+protected:
+    SpatialIndex::RTree::Data* m_pNext;
+    SpatialIndex::id_type m_id;
+
+private:
+    int (*iterfunct)(SpatialIndex::id_type *id, double **pMin, double **pMax, uint32_t *nDimension, const uint8_t **pData, uint32_t *nDataLength);
+    
+    bool readData();
+    bool m_bDoneReading;
+
+};
+