POI-writer: add calculated bounds to metadata, if not set in paramete…

…rs (mapsforge#995)
mgalkin · Sep 20, 2017 · b77132a · b77132a
1 parent 5993a2c
commit b77132a
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/mapsforge-poi-writer/src/main/java/org/mapsforge/poi/writer/PoiWriter.java b/mapsforge-poi-writer/src/main/java/org/mapsforge/poi/writer/PoiWriter.java
@@ -608,6 +608,18 @@ private void writeMetadata() throws SQLException {
         // Bounds
         pStmtMetadata.setString(1, DbConstants.METADATA_BOUNDS);
         BoundingBox bb = this.configuration.getBboxConfiguration();
+        if (bb == null) {
+            // This may produce implausible bounds, but this depends on the source map.
+            String FIND_MAX_BOUND = "SELECT MIN(minLat), MIN(minLon), MAX(maxLat), MAX(maxLon) FROM poi_index";
+
+            Statement maxBoundStmt = this.conn.createStatement();
+            ResultSet rs = maxBoundStmt.executeQuery(FIND_MAX_BOUND);
+            if (rs.next()) {
+                bb = new BoundingBox(rs.getDouble(1), rs.getDouble(2), rs.getDouble(3), rs.getDouble(4));
+            }
+            rs.close();
+            maxBoundStmt.close();
+        }
         if (bb != null) {
             pStmtMetadata.setString(2, bb.minLatitude + "," + bb.minLongitude + "," + bb.maxLatitude + "," + bb.maxLongitude);
         } else {