Java SpatialContext.makePoint方法代码示例

import com.spatial4j.core.context.SpatialContext; //导入方法依赖的package包/类
@Override
public Rectangle makeShape(OCompositeKey key, SpatialContext ctx) {

  Point[] points = new Point[2];
  int i = 0;

  for (Object o : key.getKeys()) {
    List<Number> numbers = (List<Number>) o;
    double lat = ((Double) OType.convert(numbers.get(0), Double.class)).doubleValue();
    double lng = ((Double) OType.convert(numbers.get(1), Double.class)).doubleValue();
    points[i] = ctx.makePoint(lng, lat);
    i++;
  }

  Point lowerLeft = points[0];
  Point topRight = points[1];
  if (lowerLeft.getX() > topRight.getX()) {
    double x = lowerLeft.getX();
    lowerLeft = ctx.makePoint(topRight.getX(), lowerLeft.getY());
    topRight = ctx.makePoint(x, topRight.getY());
  }
  return ctx.makeRectangle(lowerLeft, topRight);
}
 

import com.spatial4j.core.context.SpatialContext; //导入方法依赖的package包/类
/**
 * Returns distance (in meters) between 2 points.
 *
 * @param point1 Must not be null
 * @param point2 Must not be null
 * @return distance in meters
 */
public static double getDistance(Point point1, Point point2) {
	Assert.notNull(point1, "point1 must not be null");
	Assert.notNull(point2, "point2 must not be null");

	final SpatialContext ctx = SpatialContext.GEO;
	com.spatial4j.core.shape.Point p1 = ctx.makePoint(point1.getLongitude(), point1.getLatitude());
	com.spatial4j.core.shape.Point p2 = ctx.makePoint(point2.getLongitude(), point2.getLatitude());

	return DistanceUtils.degrees2Dist(ctx.getDistCalc().distance(p1, p2), DistanceUtils.EARTH_MEAN_RADIUS_KM) * 1000;
}
 

import com.spatial4j.core.context.SpatialContext; //导入方法依赖的package包/类
@Override
public ValueSource parse(FunctionQParser fp) throws SyntaxError {
  String fieldName = fp.parseId();
  SchemaField field = fp.getReq().getSchema().getField(fieldName);
  FieldType type = field.getType();
  if (!(type instanceof MultiPointDocValuesField))
    throw new SyntaxError("This function only supports fields of type "+
        MultiPointDocValuesField.class.getName()+", not "+type.getClass().getName());
  MultiPointDocValuesField mpdvFieldType = (MultiPointDocValuesField) type;

  double[] parsedLatLong = null;
  try {
    parsedLatLong = ParseUtils.parseLatitudeLongitude(fp.parseArg());
  } catch (InvalidShapeException e) {
    throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, e);
  }

  double y = parsedLatLong[0];
  double x = parsedLatLong[1];

  SpatialContext ctx = mpdvFieldType.getCtx();
  Point point = ctx.makePoint(x, y);

  String score = fp.getLocalParams().get("score", "distance");
  ValueSource valueSource = new MultiPointDistanceValueSource(fieldName, point, ctx);

  if ("distance".equals(score)) {
    return valueSource;
  }
  else if ("recipDistance".equals(score)) {
    int shift = fp.getLocalParams().getInt("shift", 100);
    int maxScore = fp.getLocalParams().getInt("maxScore", 10);
    return new ReciprocalFloatFunction(valueSource, maxScore, shift, shift);
  }
  else {
    throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "'score' local-param must be one of 'distance', or 'recipDistance'");
  }
}
 

import com.spatial4j.core.context.SpatialContext; //导入方法依赖的package包/类
@Override
public Point makeShape(OCompositeKey key, SpatialContext ctx) {
  double lat = ((Double) OType.convert(((OCompositeKey) key).getKeys().get(0), Double.class)).doubleValue();
  double lng = ((Double) OType.convert(((OCompositeKey) key).getKeys().get(1), Double.class)).doubleValue();
  return ctx.makePoint(lng, lat);

}
 

import com.spatial4j.core.context.SpatialContext; //导入方法依赖的package包/类
@Test
  public void testNGramPrefixGridLosAngeles() throws IOException {
    SpatialContext ctx = SpatialContext.GEO;
    TermQueryPrefixTreeStrategy prefixGridStrategy = new TermQueryPrefixTreeStrategy(new QuadPrefixTree(ctx), "geo");

    Shape point = ctx.makePoint(-118.243680, 34.052230);

    Document losAngeles = new Document();
    losAngeles.add(new StringField("name", "Los Angeles", Field.Store.YES));
    for (IndexableField field : prefixGridStrategy.createIndexableFields(point)) {
      losAngeles.add(field);
    }
    losAngeles.add(new StoredField(prefixGridStrategy.getFieldName(), point.toString()));//just for diagnostics

    addDocumentsAndCommit(Arrays.asList(losAngeles));

    // This won't work with simple spatial context...
    SpatialArgsParser spatialArgsParser = new SpatialArgsParser();
    // TODO... use a non polygon query
//    SpatialArgs spatialArgs = spatialArgsParser.parse(
//        "Intersects(POLYGON((-127.00390625 39.8125,-112.765625 39.98828125,-111.53515625 31.375,-125.94921875 30.14453125,-127.00390625 39.8125)))",
//        new SimpleSpatialContext());

//    Query query = prefixGridStrategy.makeQuery(spatialArgs, fieldInfo);
//    SearchResults searchResults = executeQuery(query, 1);
//    assertEquals(1, searchResults.numFound);
  }
 

import com.spatial4j.core.context.SpatialContext; //导入方法依赖的package包/类
@Override
public Shape makeShape(OCompositeKey key, SpatialContext ctx) {
  double lat = ((Double) OType.convert(((OCompositeKey) key).getKeys().get(0), Double.class)).doubleValue();
  double lng = ((Double) OType.convert(((OCompositeKey) key).getKeys().get(1), Double.class)).doubleValue();
  return ctx.makePoint(lng, lat);

}
 

import com.spatial4j.core.context.SpatialContext; //导入方法依赖的package包/类
@Override
public Shape makeShape(OCompositeKey key, SpatialContext ctx) {

  Point[] points = new Point[2];
  int i = 0;
  for (Object o : key.getKeys()) {
    List<Number> numbers = (List<Number>) o;
    double lat = ((Double) OType.convert(numbers.get(0), Double.class)).doubleValue();
    double lng = ((Double) OType.convert(numbers.get(1), Double.class)).doubleValue();
    points[i] = ctx.makePoint(lng, lat);
    i++;
  }
  return ctx.makeRectangle(points[0], points[1]);
}
 

import com.spatial4j.core.context.SpatialContext; //导入方法依赖的package包/类
@Test
  public void testNGramPrefixGridLosAngeles() throws IOException {
    SpatialContext ctx = SpatialContext.GEO;
    TermQueryPrefixTreeStrategy prefixGridStrategy = new TermQueryPrefixTreeStrategy(new QuadPrefixTree(ctx), "geo");

    Shape point = ctx.makePoint(-118.243680, 34.052230);

    Document losAngeles = new Document();
    losAngeles.add(new StringField("name", "Los Angeles", Field.Store.YES));
    for (IndexableField field : prefixGridStrategy.createIndexableFields(point)) {
      losAngeles.add(field);
    }
    losAngeles.add(new StoredField(prefixGridStrategy.getFieldName(), ctx.toString(point)));

    addDocumentsAndCommit(Arrays.asList(losAngeles));

    // This won't work with simple spatial context...
    SpatialArgsParser spatialArgsParser = new SpatialArgsParser();
    // TODO... use a non polygon query
//    SpatialArgs spatialArgs = spatialArgsParser.parse(
//        "Intersects(POLYGON((-127.00390625 39.8125,-112.765625 39.98828125,-111.53515625 31.375,-125.94921875 30.14453125,-127.00390625 39.8125)))",
//        new SimpleSpatialContext());

//    Query query = prefixGridStrategy.makeQuery(spatialArgs, fieldInfo);
//    SearchResults searchResults = executeQuery(query, 1);
//    assertEquals(1, searchResults.numFound);
  }
 

import com.spatial4j.core.context.SpatialContext; //导入方法依赖的package包/类
/** {@inheritDoc} */
@Override
public com.spatial4j.core.shape.Shape toSpatial4j(SpatialContext spatialContext) {
    return spatialContext.makePoint(longitude, latitude);
}