my imposm config

gistfile1.txt

{
  "tags": {
    "load_all": true,
    "exclude": ["created_by", "source", "source:datetime"]
  },
  "generalized_tables": {
    "water_areas_gen_50_gt_500_000": {
      "source": "water_areas",
      "sql_filter": "ST_Area(geometry)>500000.000000",
      "tolerance": 50.0
    },
    "water_ways_gen_50_gt_100_000": {
      "source": "water_areas",
      "sql_filter": "ST_Area(geometry)>100000.000000",
      "tolerance": 50.0
    },
    "land_usages_gen_50_gt_100_000": {
      "source": "land_usages",
      "sql_filter": "ST_Area(geometry)>100000.000000",
      "tolerance": 50.0
    },
    "transport_lines_gen_50": {
      "source": "transport_lines",
      "sql_filter": "type IN ('motorway', 'motorway_link', 'trunk', 'trunk_link', 'primary', 'primary_link', 'secondary', 'secondary_link', 'tertiary', 'tertiary_link')",
      "tolerance": 50.0
    }
  },
  "tables": {
    "water_areas": {
      "fields": [
        {
          "type": "id",
          "name": "osm_id",
          "key": null
        },
        {
          "type": "geometry",
          "name": "geometry",
          "key": null
        },
        {
          "type": "mapping_value",
          "name": "type",
          "key": null
        },
        {
          "type": "area",
          "name": "area",
          "key": null
        }
      ],
      "type": "polygon",
      "mapping": {
        "water": [
          "lake",
          "oxbox",
          "lagoon",
          "basin",
          "reservoir",
          "moat",
          "reflecting_pool",
          "pond",
          "wastewater"
        ],
        "waterway": ["dock"],
        "amenity": ["swimming_pool"],
        "landuse": ["basin", "reservoir"],
        "natural": ["water"]
      },
      "filters": {
        "reject": {
          "waterway": ["__any__"],
          "water": [
            "river",
            "canal",
            "stream",
            "stream_pool",
            "rapids",
            "lock",
            "fish_pass",
            "ditch"
          ]
        }
      }
    },
    "water_ways": {
      "fields": [
        {
          "type": "id",
          "name": "osm_id",
          "key": null
        },
        {
          "type": "geometry",
          "name": "geometry",
          "key": null
        },
        {
          "type": "mapping_value",
          "name": "type",
          "key": null
        },
        {
          "type": "area",
          "name": "area",
          "key": null
        }
      ],
      "type": "polygon",
      "mapping": {
        "water": [
          "river",
          "canal",
          "stream",
          "stream_pool",
          "rapids",
          "lock",
          "fish_pass",
          "ditch"
        ],
        "waterway": [
          "river",
          "riverbank",
          "stream",
          "tidal_channel",
          "canal",
          "ditch",
          "fish_pass",
          "waterfall"
        ]
      }
    },
    "transport_lines": {
      "fields": [
        {
          "type": "id",
          "name": "osm_id",
          "key": null
        },
        {
          "type": "geometry",
          "name": "geometry",
          "key": null
        },
        {
          "type": "mapping_value",
          "name": "type",
          "key": null
        },
        {
          "type": "boolint",
          "name": "tunnel",
          "key": "tunnel"
        },
        {
          "type": "boolint",
          "name": "bridge",
          "key": "bridge"
        },
        {
          "type": "string",
          "name": "ref",
          "key": "ref"
        },
        {
          "type": "integer",
          "name": "level",
          "key": "level"
        },
        {
          "type": "wayzorder",
          "name": "z_order",
          "key": "layer"
        },
        {
          "type": "mapping_key",
          "name": "class",
          "key": null
        }
      ],
      "type": "linestring",
      "filters": {
        "reject": {
          "area": ["yes"],
          "footway": ["sidewalk", "crossing", "access_aile"],
          "service": [
            "parking_aisle",
            "driveway",
            "alley",
            "emergency_access",
            "drive-through"
          ]
        }
      },
      "mappings": {
        "railway": {
          "mapping": {
            "railway": ["__any__"]
          }
        },
        "highway": {
          "mapping": {
            "highway": ["__any__"]
          }
        },
        "aeroway": {
          "mapping": {
            "aeroway": ["__any__"]
          }
        }
      }
    },
    "transport_areas": {
      "fields": [
        {
          "type": "id",
          "name": "osm_id",
          "key": null
        },
        {
          "type": "geometry",
          "name": "geometry",
          "key": null
        },
        {
          "type": "mapping_value",
          "name": "type",
          "key": null
        },
        {
          "type": "mapping_key",
          "name": "class",
          "key": null
        }
      ],
      "type": "polygon",
      "mappings": {
        "rail": {
          "mapping": {
            "railway": ["__any__"]
          }
        },
        "highway": {
          "mapping": {
            "highway": ["__any__"]
          }
        },
        "aeroway": {
          "mapping": {
            "aeroway": ["__any__"]
          }
        }
      }
    },
    "land_usages": {
      "fields": [
        {
          "type": "id",
          "name": "osm_id",
          "key": null
        },
        {
          "type": "geometry",
          "name": "geometry",
          "key": null
        }
      ],
      "type": "polygon",
      "mapping": {
        "natural": ["wood"],
        "landuse": ["forest"]
      }
    },
    "buildings": {
      "fields": [
        {
          "type": "id",
          "name": "osm_id",
          "key": null
        },
        {
          "type": "geometry",
          "name": "geometry",
          "key": null
        },
        {
          "type": "mapping_value",
          "name": "type",
          "key": null
        },
        {
          "type": "integer",
          "name": "levels",
          "key": "building:levels"
        },
        {
          "type": "integer",
          "name": "layer",
          "key": "layer"
        }
      ],
      "type": "polygon",
      "mapping": {
        "building": ["__any__"]
      }
    }
  }
}