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# GeometryListHolder.h

    00001 /**********************************************************************
    00002  * $Id$
    00003  *
    00004  * GEOS - Geometry Engine Open Source
    00005  * http://geos.refractions.net
    00006  *
    00007  * Copyright (C) 2011 Sandro Santilli <strk@keybit.net>
    00008  * Copyright (C) 2006 Refractions Research Inc.
    00009  *
    00010  * This is free software; you can redistribute and/or modify it under
    00011  * the terms of the GNU Lesser General Public Licence as published
    00012  * by the Free Software Foundation.
    00013  * See the COPYING file for more information.
    00014  *
    00015  **********************************************************************/
    00016
    00017 #ifndef GEOS_OP_UNION_GEOMETRYLISTHOLDER_H
    00018 #define GEOS_OP_UNION_GEOMETRYLISTHOLDER_H
    00019
    00020 // Forward declarations
    00021 namespace geos {
    00022   namespace geom {
    00023     class Geometry;
    00024         }
    00025 }
    00026
    00027 namespace geos {
    00028 namespace operation { // geos::operation
    00029 namespace geounion {  // geos::operation::geounion
    00030
    00035 class GeometryListHolder : public std::vector<geom::Geometry*>
    00036 {
    00037 private:
    00038     typedef std::vector<geom::Geometry*> base_type;
    00039
    00040 public:
    00041     GeometryListHolder() {}
    00042     ~GeometryListHolder()
    00043     {
    00044         std::for_each(ownedItems.begin(), ownedItems.end(),
    00045             &GeometryListHolder::deleteItem);
    00046     }
    00047
    00048     // items need to be deleted in the end
    00049     void push_back_owned(geom::Geometry* item)
    00050     {
    00051         this->base_type::push_back(item);
    00052         ownedItems.push_back(item);
    00053     }
    00054
    00055     geom::Geometry* getGeometry(std::size_t index)
    00056     {
    00057       if (index >= this->base_type::size())
    00058           return NULL;
    00059       return (*this)[index];
    00060     }
    00061
    00062 private:
    00063     static void deleteItem(geom::Geometry* item);
    00064
    00065 private:
    00066     std::vector<geom::Geometry*> ownedItems;
    00067 };
    00068
    00069 } // namespace geos::operation::union
    00070 } // namespace geos::operation
    00071 } // namespace geos
    00072
    00073 #endif