6ba91231f2
Removed the additional GeoJsonModule and only register the mixin for GeoJsonPoint to be able to read the data from the source JSON file. Removed custom logging. A bit of polish in the README, JavaDoc.
77 lines
2.0 KiB
Markdown
77 lines
2.0 KiB
Markdown
# Spring Data MongoDB - GeoJSON examples
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This project contains samples of [GeoJSON](http://geojson.org) specific features of Spring Data (MongoDB).
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## Support for GeoJSON types in domain classes
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Using [GeoJSON](http://geojson.org) types in domain classes is straight forward. The `org.springframework.data.mongodb.core.geo` package contains types like `GeoJsonPoint` or `GeoJsonPolygon` which are extensions to the existing `org.springframework.data.geo` types.
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Find more information in the [MongoDB manual on GeoJSON support](http://docs.mongodb.org/manual/core/2dsphere/#geospatial-indexes-store-geojson) to learn about requirements and restrictions.
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```java
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public class Store {
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String id;
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/**
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* location is stored in GeoJSON format.
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* {
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* "type" : "Point",
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* "coordinates" : [ x, y ]
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* }
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*/
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GeoJsonPoint location;
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}
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```
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## Support for GeoJSON types in repository methods
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Using GeoJson types as repository query parameters forces usage of the `$geometry` operator when creating the query.
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```java
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public interface StoreRepository extends CrudRepository<Store, String> {
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List<Store> findByLocationWithin(Polygon polygon);
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}
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```
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```java
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/* {
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* "location": {
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* "$geoWithin": {
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* "$geometry": {
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* "type": "Polygon",
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* "coordinates": [
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* [
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* [-73.992514,40.758934],
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* [-73.961138,40.760348],
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* [-73.991658,40.730006],
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* [-73.992514,40.758934]
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* ]
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* ]
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* }
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* }
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* }
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* }
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*/
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repo.findByLocationWithin(
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new GeoJsonPolygon(
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new Point(-73.992514, 40.758934),
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new Point(-73.961138, 40.760348),
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new Point(-73.991658, 40.730006),
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new Point(-73.992514, 40.758934)));
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/* {
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* "location" : {
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* "$geoWithin" : {
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* "$polygon" : [ [ -73.992514, 40.758934 ] , [ -73.961138, 40.760348 ] , [ -73.991658, 40.730006 ] ]
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* }
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* }
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* }
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*/
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repo.findByLocationWithin(
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new Polygon(
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new Point(-73.992514, 40.758934),
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new Point(-73.961138, 40.760348),
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new Point(-73.991658, 40.730006));
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```
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