Merge pull request #81 from max-trolliet/patch-4

Create SQL code for changing reach direction

delta/delta_1.1.1_add_reach_direction_change.sql

@@ -0,0 +1,37 @@
+/***************************************************************************
+    reach_direction_change.sql
+    ---------------------
+    begin                : August 2018
+    copyright            : (C) 2018 by Matthias Kuhn, OPENGIS.ch
+    email                : [email protected]
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+/**
+ * This function changes the direction of a set of reaches.
+ * It will change the direction of the line itself as well as switch the two reach points
+ * to make sure the topology and reach point attributes stay the way they were.
+ * 
+ * With the parameter `reach_obj_ids` it is possible to specify on which reaches this operation
+ * should be performed by passing in an array of obj_ids
+ */
+CREATE OR REPLACE FUNCTION qgep_od.reach_direction_change(reach_obj_ids text[])RETURNS void AS $BODY$
+
+BEGIN 
+
+UPDATE qgep_od.reach 
+  SET
+    progression_geometry = (ST_ForceCurve(ST_Reverse(ST_CurveToLine(progression_geometry)))),
+    fk_reach_point_from = fk_reach_point_to,
+    fk_reach_point_to = fk_reach_point_from
+  WHERE obj_id = ANY(reach_obj_ids);
+END;
+$BODY$
+LANGUAGE plpgsql VOLATILE
+COST 100;

functions/reach_direction_change.sql

@@ -0,0 +1,37 @@
+/***************************************************************************
+    reach_direction_change.sql
+    ---------------------
+    begin                : August 2018
+    copyright            : (C) 2018 by Matthias Kuhn, OPENGIS.ch
+    email                : [email protected]
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+/**
+ * This function changes the direction of a set of reaches.
+ * It will change the direction of the line itself as well as switch the two reach points
+ * to make sure the topology and reach point attributes stay the way they were.
+ * 
+ * With the parameter `reach_obj_ids` it is possible to specify on which reaches this operation
+ * should be performed by passing in an array of obj_ids
+ */
+CREATE OR REPLACE FUNCTION qgep_od.reach_direction_change(reach_obj_ids text[])RETURNS void AS $BODY$
+
+BEGIN 
+
+UPDATE qgep_od.reach 
+  SET
+    progression_geometry = (ST_ForceCurve(ST_Reverse(ST_CurveToLine(progression_geometry)))),
+    fk_reach_point_from = fk_reach_point_to,
+    fk_reach_point_to = fk_reach_point_from
+  WHERE obj_id = ANY(reach_obj_ids);
+END;
+$BODY$
+LANGUAGE plpgsql VOLATILE
+COST 100;

scripts/db_setup.sh

@@ -100,11 +100,13 @@ psql "service=${PGSERVICE}" -v ON_ERROR_STOP=1 -c "$(${DIR}/view/vw_oo_organisat
 psql "service=${PGSERVICE}" -v ON_ERROR_STOP=1 -v SRID=$SRID -f ${DIR}/view/vw_catchment_area_connections.sql
 psql "service=${PGSERVICE}" -v ON_ERROR_STOP=1 -v SRID=$SRID -f ${DIR}/view/vw_change_points.sql
 
+psql "service=${PGSERVICE}" -v ON_ERROR_STOP=1 -v SRID=$SRID -f ${DIR}/functions/reach_direction_change.sql
+
 if [[ $roles ]]; then
   psql "service=${PGSERVICE}" -v ON_ERROR_STOP=1 -f ${DIR}/12_roles.sql
 fi
 
 VERSION=$(cat ${DIR}/system/CURRENT_VERSION.txt)
 pum baseline -p ${PGSERVICE} -t qgep_sys.pum_info -d ${DIR}/delta/ -b ${VERSION}
 
-psql "service=${PGSERVICE}" -v ON_ERROR_STOP=1 -v SRID=$SRID -f ${DIR}/13_import.sql
+psql "service=${PGSERVICE}" -v ON_ERROR_STOP=1 -v SRID=$SRID -f ${DIR}/13_import.sql