Package org.openstreetmap.josm.io

Class GeoJSONWriter

java.lang.Object

org.openstreetmap.josm.io.GeoJSONWriter

Direct Known Subclasses:

GeoJSONMapRouletteWriter

public class GeoJSONWriter
extends java.lang.Object

Writes OSM data as a GeoJSON string, using JSR 353: Java API for JSON Processing (JSON-P).

See RFC7946: The GeoJSON Format

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	GeoJSONWriter.GeometryPrimitiveVisitor	Convert a primitive to a json object
(package private) static class	GeoJSONWriter.Options

Field Summary

Fields

Modifier and Type	Field	Description
private DataSet	data
protected static jakarta.json.spi.JsonProvider	JSON_PROVIDER	Used to avoid many calls to JsonProvider.provider() in getCoorArray(JsonArrayBuilder, EastNorth).
(package private) static java.lang.String	JSON_VALUE_END_MARKER	This is used to determine that a tag should be interpreted as a json object or array.
(package private) static java.lang.String	JSON_VALUE_START_MARKER	This is used to determine that a tag should be interpreted as a json object or array.
private java.util.EnumSet<GeoJSONWriter.Options>	options
private static java.util.Set<Way>	processedMultipolygonWays
private static Projection	projection
private static BooleanProperty	SKIP_EMPTY_NODES
private static BooleanProperty	UNTAGGED_CLOSED_IS_POLYGON

Constructor Summary

Constructors

Constructor	Description
GeoJSONWriter(DataSet ds)	Constructs a new GeoJSONWriter.

Method Summary

Modifier and Type	Method	Description
protected void	appendBounds(Bounds b, jakarta.json.JsonObjectBuilder object)
protected void	appendLayerBounds(DataSet ds, jakarta.json.JsonObjectBuilder object)
protected void	appendLayerFeatures(DataSet ds, jakarta.json.JsonObjectBuilder object)
protected void	appendPrimitive(OsmPrimitive p, jakarta.json.JsonArrayBuilder array)
private static jakarta.json.JsonValue	convertValueToJson(java.lang.String value)
private static jakarta.json.JsonArrayBuilder	getCoorArray(jakarta.json.JsonArrayBuilder builder, EastNorth c)
private jakarta.json.JsonArrayBuilder	getCoorArray(jakarta.json.JsonArrayBuilder builder, ILatLon c)
(package private) void	setOptions(GeoJSONWriter.Options... options)	Set the options for this writer.
java.lang.String	write()	Writes OSM data as a GeoJSON string (prettified).
java.lang.String	write(boolean pretty)	Writes OSM data as a GeoJSON string (prettified or not).
void	write(boolean pretty, java.io.Writer writer)	Writes OSM data as a GeoJSON string (prettified or not).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

data

private final DataSet data

projection

private static final Projection projection

SKIP_EMPTY_NODES

private static final BooleanProperty SKIP_EMPTY_NODES

UNTAGGED_CLOSED_IS_POLYGON

private static final BooleanProperty UNTAGGED_CLOSED_IS_POLYGON

JSON_PROVIDER

protected static final jakarta.json.spi.JsonProvider JSON_PROVIDER

Used to avoid many calls to JsonProvider.provider() in getCoorArray(JsonArrayBuilder, EastNorth). For validating Mesa County, CO, this reduces CPU and memory usage of write() by ~80%. By using this for other Json calls, write() takes ~95% less resources than the original. And the entire process takes 1/4 of the time (38 minutes → <10 minutes).

For more details, see JSONP #346.

processedMultipolygonWays

private static final java.util.Set<Way> processedMultipolygonWays

options

private final java.util.EnumSet<GeoJSONWriter.Options> options

JSON_VALUE_START_MARKER

static final java.lang.String JSON_VALUE_START_MARKER

This is used to determine that a tag should be interpreted as a json object or array. The tag should have both JSON_VALUE_START_MARKER and JSON_VALUE_END_MARKER.

See Also:

Constant Field Values

JSON_VALUE_END_MARKER

static final java.lang.String JSON_VALUE_END_MARKER

This is used to determine that a tag should be interpreted as a json object or array. The tag should have both JSON_VALUE_START_MARKER and JSON_VALUE_END_MARKER.

See Also:

Constant Field Values

Constructor Detail

GeoJSONWriter

public GeoJSONWriter(DataSet ds)

Constructs a new GeoJSONWriter.

Parameters:

ds - The OSM data set to save

Since:

12806

Method Detail

setOptions

void setOptions(GeoJSONWriter.Options... options)

Set the options for this writer. See GeoJSONWriter.Options.

Parameters:

options - The options to set.

write

public java.lang.String write()

Writes OSM data as a GeoJSON string (prettified).

Returns:

The GeoJSON data

write

public java.lang.String write(boolean pretty)

Writes OSM data as a GeoJSON string (prettified or not).

Parameters:

pretty - true to have pretty output, false otherwise

Returns:

The GeoJSON data

Since:

6756

write

public void write(boolean pretty,
                  java.io.Writer writer)

Writes OSM data as a GeoJSON string (prettified or not).

Parameters:

pretty - true to have pretty output, false otherwise

writer - The writer used to write results

getCoorArray

private jakarta.json.JsonArrayBuilder getCoorArray(jakarta.json.JsonArrayBuilder builder,
                                                   ILatLon c)

getCoorArray

private static jakarta.json.JsonArrayBuilder getCoorArray(jakarta.json.JsonArrayBuilder builder,
                                                          EastNorth c)

appendPrimitive

protected void appendPrimitive(OsmPrimitive p,
                               jakarta.json.JsonArrayBuilder array)

convertValueToJson

private static jakarta.json.JsonValue convertValueToJson(java.lang.String value)

appendLayerBounds

protected void appendLayerBounds(DataSet ds,
                                 jakarta.json.JsonObjectBuilder object)

appendBounds

protected void appendBounds(Bounds b,
                            jakarta.json.JsonObjectBuilder object)

appendLayerFeatures

protected void appendLayerFeatures(DataSet ds,
                                   jakarta.json.JsonObjectBuilder object)