Examples of org.json.JSONArray

org.json.JSONArray
A JSONArray is an ordered sequence of values. Its external text form is a string wrapped in square brackets with commas separating the values. The internal form is an object having get and opt methods for accessing the values by index, and put methods for adding or replacing values. The values can be any of these types: Boolean, JSONArray, JSONObject, Number, String, or the JSONObject.NULL object.
The constructor can convert a JSON text into a Java object. The toString method converts to JSON text.
A get method returns a value if one can be found, and throws an exception if one cannot be found. An opt method returns a default value instead of throwing an exception, and so is useful for obtaining optional values.
The generic get() and opt() methods return an object which you can cast or query for type. There are also typed get and opt methods that do type checking and type coercion for you.
The texts produced by the toString methods strictly conform to JSON syntax rules. The constructors are more forgiving in the texts they will accept:
- An extra , (comma) may appear just before the closing bracket.
- The null value will be inserted when there is , (comma) elision.
- Strings may be quoted with ' (single quote).
- Strings do not need to be quoted at all if they do not begin with a quote or single quote, and if they do not contain leading or trailing spaces, and if they do not contain any of these characters: { } [ ] / \ : , # and if they do not look like numbers and if they are not the reserved words true, false, or null.
@author JSON.org @version 2014-05-03

    // Write the response
    JsonObjectWriter writer = new JsonObjectWriter(response.getWriter(), 3);
    writer.write(jsonRes);
    writer.flush();


    JSONArray jsonArray = (JSONArray) jsonReq.get("params");
    long millis = System.currentTimeMillis() - startTime;
    log.debug("Command execution time: " + millis + " ms - class=" + jsonArray.toString());
  }

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        type.equals(org.geomajas.geometry.Geometry.LINEAR_RING) ||
        type.equals(org.geomajas.geometry.Geometry.MULTI_LINE_STRING) ||
        type.equals(org.geomajas.geometry.Geometry.MULTI_POLYGON))) {
      throw new UnmarshallException(type + " is not a supported geometry");
    }
    JSONArray coordinates = jso.getJSONArray(ATTRIBUTE_COORDINATES);
    if (coordinates == null) {
      throw new UnmarshallException("coordinates missing");
    }
    return ObjectMatch.OKAY;
  }

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  private Polygon createPolygon(GeometryFactory factory, JSONObject jso) throws UnmarshallException {
    JSONObject jsoShell = jso.getJSONObject("shell");
    LinearRing shell = createLinearRing(factory, jsoShell);


    JSONArray holeArray = jso.getJSONArray("holes");
    LinearRing[] holes = new LinearRing[holeArray.length()];
    for (int i = 0; i < holeArray.length(); i++) {
      JSONObject jsoHole = holeArray.getJSONObject(i);
      holes[i] = createLinearRing(factory, jsoHole);
    }
    return factory.createPolygon(shell, holes);
  }

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    }
    return factory.createPolygon(shell, holes);
  }


  private LinearRing createLinearRing(GeometryFactory factory, JSONObject jso) throws UnmarshallException {
    JSONArray coords = jso.getJSONArray(ATTRIBUTE_COORDINATES);
    Coordinate[] coordinates = new Coordinate[coords.length()];
    for (int i = 0; i < coords.length(); i++) {
      JSONObject nextCoord = coords.getJSONObject(i);
      if (nextCoord == null) {
        throw new UnmarshallException("inner coordinate missing");
      }
      coordinates[i] = new Coordinate(nextCoord.getDouble("x"), nextCoord.getDouble("y"));
    }

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    return factory.createLinearRing(coordinates);
  }


  private LineString createLineString(GeometryFactory factory, JSONObject jso) throws UnmarshallException {
    LineString geometry;
    JSONArray jsonCoords = jso.getJSONArray(ATTRIBUTE_COORDINATES);
    if (jsonCoords == null) {
      throw new UnmarshallException("coordinates missing");
    }
    Coordinate[] coordinates = new Coordinate[jsonCoords.length()];
    for (int i = 0; i < jsonCoords.length(); i++) {
      JSONObject nextCoord = jsonCoords.getJSONObject(i);
      if (nextCoord == null) {
        throw new UnmarshallException("inner coordinate missing");
      }
      coordinates[i] = new Coordinate(nextCoord.getDouble("x"), nextCoord.getDouble("y"));
    }

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    return geometry;
  }


  private Point createPoint(GeometryFactory factory, JSONObject jso) throws UnmarshallException {
    Point geometry;
    JSONArray jsonCoords = jso.getJSONArray(ATTRIBUTE_COORDINATES);
    if (jsonCoords == null) {
      throw new UnmarshallException("coordinates missing");
    }
    if (jsonCoords.length() != 1) {
      throw new UnmarshallException("wrong number of coordinates " + jsonCoords.length() + " for point");
    }
    JSONObject coord = jsonCoords.getJSONObject(0);
    if (coord == null) {
      throw new UnmarshallException("inner coordinate missing");
    }


    Coordinate coordinate = new Coordinate(coord.getDouble("x"), coord.getDouble("y"));

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    return geometry;
  }


  private MultiPolygon createMultiPolygon(GeometryFactory factory, JSONObject jso)
      throws UnmarshallException {
    JSONArray polyArray = jso.getJSONArray("polygons");
    Polygon[] polygons = new Polygon[polyArray.length()];
    for (int i = 0; i < polygons.length; i++) {
      polygons[i] = createPolygon(factory, polyArray.getJSONObject(i));
    }
    return factory.createMultiPolygon(polygons);
  }

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    return factory.createMultiPolygon(polygons);
  }


  private Geometry createMultiLineString(GeometryFactory factory, JSONObject jso)
      throws UnmarshallException {
    JSONArray lineArray = jso.getJSONArray("lineStrings");
    LineString[] lineStrings = new LineString[lineArray.length()];
    for (int i = 0; i < lineArray.length(); i++) {
      lineStrings[i] = createLineString(factory, lineArray.getJSONObject(i));
    }
    return factory.createMultiLineString(lineStrings);
  }

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    }
  }


  private JSONObject fromPoint(Point p) {
    JSONObject jso = new JSONObject();
    JSONArray coordinates = new JSONArray();
    PrecisionModel precisionmodel = p.getPrecisionModel();
    coordinates.put(precisionmodel.makePrecise(p.getX()));
    coordinates.put(precisionmodel.makePrecise(p.getY()));
    putBasics(jso, p);
    jso.put(ATTRIBUTE_COORDINATES, coordinates);
    return jso;
  }

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    return jso;
  }


  private JSONObject fromMultiPoint(MultiPoint mp) {
    JSONObject jso = new JSONObject();
    JSONArray polys = new JSONArray();
    for (int i = 0; i < mp.getNumGeometries(); i++) {
      polys.put(fromPoint((Point) mp.getGeometryN(i)));
    }
    jso.put("points", polys);
    putBasics(jso, mp);
    return jso;
  }

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