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How to use "Geo-entities" (indexing, queries)
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fmarchand 2013-11-17 13:36:56 +01:00
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@ -178,7 +178,7 @@ Indexing multiple Document(bulk index) using Repository
You can make request using geo_distance filter. This can be done using GeoPoint object. You can make request using geo_distance filter. This can be done using GeoPoint object.
First, here is a sample of an entity with a GeoPoint field First, here is a sample of an entity with a GeoPoint field (location)
```java ```java
@Document(indexName = "test-geo-index", type = "geo-class-point-type") @Document(indexName = "test-geo-index", type = "geo-class-point-type")
@ -223,6 +223,45 @@ public class AuthorMarkerEntity {
} }
``` ```
Indexing your entity with a geo-point :
```java
elasticsearchTemplate.createIndex(AuthorMarkerEntity.class);
elasticsearchTemplate.refresh(AuthorMarkerEntity.class, true);
elasticsearchTemplate.putMapping(AuthorMarkerEntity.class);
List<IndexQuery> indexQueries = new ArrayList<IndexQuery>();
indexQueries.add(new AuthorMarkerEntityBuilder("1").name("Franck Marchand").location(45.7806d, 3.0875d).buildIndex());
indexQueries.add(new AuthorMarkerEntityBuilder("2").name("Mohsin Husen").location(51.5171d, 0.1062d).buildIndex());
indexQueries.add(new AuthorMarkerEntityBuilder("3").name("Rizwan Idrees").location(51.5171d, 0.1062d).buildIndex());
elasticsearchTemplate.bulkIndex(indexQueries);
```
For your information :
- Clermont-Ferrand : 45.7806, 3.0875
- London : 51.5171, 0.1062
So, if you want to search for authors who are located within 20 kilometers around Clermont-Ferrand, here is the way to build your query :
```java
CriteriaQuery geoLocationCriteriaQuery = new CriteriaQuery(
new Criteria("location").within(new GeoPoint(45.7806d, 3.0875d), "20km"));
List<AuthorMarkerEntity> geoAuthorsForGeoCriteria = elasticsearchTemplate.queryForList(geoLocationCriteriaQuery, AuthorMarkerEntity.class);
```
This example should only return one author named "Franck Marchand".
You can even combine with other criteria (e.g. author name) :
Here, we're looking for authors located within 20 kilometers around London AND named "Mohsin Husen" :
```java
CriteriaQuery geoLocationCriteriaQuery2 = new CriteriaQuery(
new Criteria("name").is("Mohsin Husen").and("location").within(new GeoPoint(51.5171d, 0.1062d), "20km"));
List<AuthorMarkerEntity> geoAuthorsForGeoCriteria2 = elasticsearchTemplate.queryForList(geoLocationCriteriaQuery2, AuthorMarkerEntity.class);
```
This example should only return one author named "Mohsin Husen".
### XML Namespace ### XML Namespace