Java Geometry类代码示例

import org.geolatte.geom.Geometry; //导入依赖的package包/类
@Bean
public Module facilityModule() {
    return new SimpleModule("geometryModule") {{
        final JsonMapper jsonMapper = new JsonMapper();

        addSerializer(Geometry.class, new GeojsonSerializer<>(jsonMapper));
        addDeserializer(Geometry.class, new GeojsonDeserializer<>(jsonMapper, Geometry.class));

        addSerializer(Polygon.class, new GeojsonSerializer<>(jsonMapper));
        addDeserializer(Polygon.class, new GeojsonDeserializer<>(jsonMapper, Polygon.class));

        addSerializer(Point.class, new GeojsonSerializer<>(jsonMapper));
        addDeserializer(Point.class, new GeojsonDeserializer<>(jsonMapper, Point.class));

        addSerializer(Feature.class, new GeojsonSerializer<>(jsonMapper));
        addSerializer(Phone.class, new PhoneSerializer());

        addSerializer(Time.class, new ToStringSerializer());
    }};
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
@Override
public Object convertObjectValueToDataValue( final Object objectValue, final Session session )
{
  if( null == objectValue )
  {
    return null;
  }
  final Geometry geometry = (Geometry) objectValue;
  final String wkt = Wkt.newEncoder( Dialect.POSTGIS_EWKT_1 ).encode( geometry );
  try
  {
    return new PGgeometry( wkt );
  }
  catch ( final SQLException se )
  {
    throw new IllegalStateException( "Failed converting geometry", se );
  }
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
@Override
public Geometry convertDataValueToObjectValue( final Object dataValue, final Session session )
{
  if( null == dataValue )
  {
    return null;
  }
  if ( dataValue instanceof PGgeometry )
  {
    final org.postgis.Geometry geometry = ( (PGgeometry) dataValue ).getGeometry();
    return Wkt.newDecoder( Wkt.Dialect.POSTGIS_EWKT_1 ).decode( geometry.toString() );
  }
  else if ( dataValue instanceof String )
  {
    /*
    In some circumstances the data will come back in WKB format (i.e. When using the Driver directly)
    and sometimes it will be returned in WKT format (i.e. In GlassFish when using the DataSource) and
    it is unclear what is causing the variance so support both scenarios.
    */
    final String wk = (String) dataValue;
    final char ch = wk.charAt( 0 );
    if( '0' == ch )
    {
      //Guess that it is in WKB format
      return Wkb.newDecoder( Wkb.Dialect.POSTGIS_EWKB_1 ).decode( ByteBuffer.from( wk ) );
    }
    else
    {
      //Assume a WKT format
      return Wkt.newDecoder( Wkt.Dialect.POSTGIS_EWKT_1 ).decode( wk );
    }
  }
  else
  {
    throw new IllegalStateException( "Unable to convert data value:" + dataValue );
  }
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
@SuppressWarnings( "ConstantConditions" )
public GjGeometry( @Nonnull final Geometry geometry,
                   @Nullable final CrsId crsId,
                   @Nullable final Envelope bbox,
                   @Nullable final JsonObject additionalProperties )
{
  super( crsId, bbox, additionalProperties );
  if ( null == geometry )
  {
    throw new IllegalArgumentException( "geometry is null" );
  }
  if ( geometry.getClass() == GeometryCollection.class )
  {
    throw new IllegalArgumentException( "geometry is a GeometryCollection" );
  }
  _geometry = geometry;
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
public static void main( final String[] args )
{
  final CrsId crsId = CrsRegistry.getCrsIdForEPSG( 3111 );
  final Envelope bbox = new Envelope( 0, 0, 2, 2, crsId );
  final JsonObject additionalProperties =
    Json.createObjectBuilder().
      add( "foo", false ).
      build();
  final Geometry geometry = fromWkT( "POINT (1 1)" );
  final GjGeometry e = new GjGeometry( geometry, crsId, bbox, additionalProperties );
  final ArrayList<GjGeometry> geometries = new ArrayList<GjGeometry>();
  geometries.add( e );
  final GjElement element =
    new GjGeometryCollection( geometries, crsId, bbox, additionalProperties );
  measureWritePerformance( element, 1000, 10000, 10000 );
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
@Test
public void emitPolygonGeometry()
{
  final Geometry geometry = fromWkT( "POLYGON ( ( 100.0 0.0, 101.0 0.0, 101.0 1.0, 100.0 1.0, 100.0 0.0 ) ( 100.2 0.2, 100.8 0.2, 100.8 0.8, 100.2 0.8, 100.2 0.2 ) )" );
  final GjElement e = new GjGeometry( geometry, null, null, null );

  final JsonStructure result = writeAndRead( e );

  final String expectedJson = "{ \"type\": \"Polygon\",\n" +
                              "  \"coordinates\": [\n" +
                              "    [ [100.0, 0.0], [101.0, 0.0], [101.0, 1.0], [100.0, 1.0], [100.0, 0.0] ],\n" +
                              "    [ [100.2, 0.2], [100.8, 0.2], [100.8, 0.8], [100.2, 0.8], [100.2, 0.2] ]\n" +
                              "    ]\n" +
                              " }";
  final JsonObject expected = (JsonObject) parse( expectedJson );
  assertEquals( result, expected );
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
@Test
public void emitMultiLineStringGeometry()
{
  final Geometry geometry = fromWkT( "MULTILINESTRING ( ( 100.0 0.0, 101.0 1.0 ) ( 102.0 2.0, 103.0 3.0 ) )" );
  final GjElement e = new GjGeometry( geometry, null, null, null );

  final JsonStructure result = writeAndRead( e );


  final String expectedJson = "{ \"type\": \"MultiLineString\",\n" +
                              "  \"coordinates\": [\n" +
                              "      [ [100.0, 0.0], [101.0, 1.0] ],\n" +
                              "      [ [102.0, 2.0], [103.0, 3.0] ]\n" +
                              "    ]\n" +
                              "  }";
  final JsonObject expected = (JsonObject) parse( expectedJson );
  assertEquals( result, expected );
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
@Test
public void emitGeometryWithAdditionalAttributes()
{
  final Geometry geometry = fromWkT( "POINT (1 1)" );
  final JsonObject additionalProperties =
    Json.createObjectBuilder().
      add( "Foo", false ).
      add( "Bar", JsonValue.NULL ).
      build();
  final GjElement e = new GjGeometry( geometry, null, null, additionalProperties );

  final JsonStructure result = writeAndRead( e );

  final String expectedJson = "{\"type\":\"Point\",\"Foo\":false,\"Bar\":null,\"coordinates\":[1.0,1.0]}";
  final JsonObject expected = (JsonObject) parse( expectedJson );
  assertEquals( result, expected );
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
@Test
public void emitFeatureWithAdditionalProperties()
{
  final Geometry geometry = fromWkT( "POINT (1 1)" );
  final GjGeometry g = new GjGeometry( geometry, null, null, null );
  final JsonObject additionalProperties =
    Json.createObjectBuilder().
      add( "Foo", false ).
      add( "Bar", JsonValue.NULL ).
      build();
  final GjElement e = new GjFeature( null, g, null, null, additionalProperties );

  final JsonStructure result = writeAndRead( e );

  final String expectedJson =
    "{\"type\":\"Feature\",\"geometry\":{\"type\":\"Point\",\"coordinates\":[1.0,1.0]},\"properties\":{\"Foo\":false,\"Bar\":null}}";
  final JsonObject expected = (JsonObject) parse( expectedJson );
  assertEquals( result, expected );
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
@Override
public Geometry getNullableResult(ResultSet rs, String columnName) throws SQLException {
	String value = rs.getString(columnName);
	if(!StringUtils.isEmpty(value)){
		return Wkt.fromWkt(value);
	}
	return null;
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
@Override
@SuppressWarnings( "unchecked" )
public T convertToEntityAttribute( final Object dbData )
{
  if ( null == dbData )
  {
    return null;
  }
  else if ( dbData instanceof PGgeometry )
  {
    final org.postgis.Geometry geometry = ( (PGgeometry) dbData ).getGeometry();
    return (T) Wkt.newDecoder( Dialect.POSTGIS_EWKT_1 ).decode( geometry.toString() );
  }
  else if ( dbData instanceof String )
  {
    /*
    In some circumstances the data will come back in WKB format (i.e. When using the Driver directly)
    and sometimes it will be returned in WKT format (i.e. In GlassFish when using the DataSource) and
    it is unclear what is causing the variance so support both scenarios.
    */
    final String wk = (String) dbData;
    final char ch = wk.charAt( 0 );
    if ( '0' == ch )
    {
      //Guess that it is in WKB format
      return (T) Wkb.newDecoder( Wkb.Dialect.POSTGIS_EWKB_1 ).decode( ByteBuffer.from( wk ) );
    }
    else
    {
      //Assume a WKT format
      return (T) Wkt.newDecoder( Dialect.POSTGIS_EWKT_1 ).decode( wk );
    }
  }
  else
  {
    throw new IllegalStateException();
  }
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
private void doTests( final boolean postgres )
  throws Exception
{
  testType( postgres,
            postgres ? PgGeometryEntity.class : MsGeometryEntity.class,
            Geometry.class,
            "POINT ( 1 1 )" );
  testType( postgres,
            postgres ? PgGeometryCollectionEntity.class : MsGeometryCollectionEntity.class,
            GeometryCollection.class,
            "GEOMETRYCOLLECTION ( POINT ( 1 1 ) , POINT ( 1 1 ))" );
  testType( postgres,
            postgres ? PgPointEntity.class : MsPointEntity.class,
            Point.class,
            "POINT ( 1 1 )" );
  testType( postgres,
            postgres ? PgMultiPointEntity.class : MsMultiPointEntity.class,
            MultiPoint.class,
            "MULTIPOINT ( (100.0 0.0) , (101.0 1.0) )" );
  testType( postgres,
            postgres ? PgLineStringEntity.class : MsLineStringEntity.class,
            LineString.class,
            "LINESTRING ( 1 1, 2 1 )" );
  testType( postgres,
            postgres ? PgMultiLineStringEntity.class : MsMultiLineStringEntity.class,
            MultiLineString.class,
            "MULTILINESTRING ( ( 100.0 0.0, 101.0 1.0 ), ( 102.0 2.0, 103.0 3.0 ) )" );
  testType( postgres,
            postgres ? PgPolygonEntity.class : MsPolygonEntity.class,
            Polygon.class,
            "POLYGON((100.0 0.0, 101.0 0.0, 101.0 1.0, 100.0 0.0))" );
  testType( postgres,
            postgres ? PgMultiPolygonEntity.class : MsMultiPolygonEntity.class,
            MultiPolygon.class,
            "MULTIPOLYGON(((100.0 0.0, 101.0 0.0, 101.0 1.0, 100.0 0.0)))" );
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
private Region getRegion(Geometry location) {
    for (Region r : regions) {
        if (r.area.intersects(location)) {
            return r;
        }
    };
    return Region.UNKNOWN_REGION;
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
public boolean isValid(Geometry geometry) {
        if (geometry == null) {
        return true;
    }
    PointCollection points = geometry.getPoints();
    for (int i = 0; i < points.size(); i++) {
        if (isNotBetween(19, points.getX(i), 32) || isNotBetween(59.5, points.getY(i), 70.5)) {
            return false;
        }
    }
    return true;
}
 

import org.geolatte.geom.Geometry; //导入依赖的package包/类
@Override
public Object convertObjectValueToDataValue( final Object objectValue, final Session session )
{
  if ( null == objectValue )
  {
    return null;
  }
  else
  {
    return Encoders.encode( (Geometry) objectValue );
  }
}