[DOCS] Extends geo_shape query docs to explain behavior when data is indexed as array of shapes (#57806)

Co-authored-by: James Rodewig <james.rodewig@elastic.co>
This commit is contained in:
István Zoltán Szabó 2020-06-08 15:03:59 +02:00
parent 663702e609
commit 536dadc4e0
1 changed files with 77 additions and 27 deletions

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@ -6,7 +6,8 @@
Filter documents indexed using the `geo_shape` or `geo_point` type.
Requires the <<geo-shape,`geo_shape` Mapping>> or the <<geo-point,`geo_point` Mapping>>.
Requires the <<geo-shape,`geo_shape` Mapping>> or the
<<geo-point,`geo_point` Mapping>>.
The `geo_shape` query uses the same grid square representation as the
`geo_shape` mapping to find documents that have a shape that intersects
@ -18,6 +19,7 @@ providing a whole shape definition, or by referencing the name of a shape
pre-indexed in another index. Both formats are defined below with
examples.
==== Inline Shape Definition
Similar to the `geo_shape` type, the `geo_shape` query uses
@ -49,8 +51,9 @@ POST /example/_doc?refresh
--------------------------------------------------
// TESTSETUP
The following query will find the point using the Elasticsearch's
`envelope` GeoJSON extension:
The following query will find the point using {es}'s `envelope` GeoJSON
extension:
[source,console]
--------------------------------------------------
@ -77,6 +80,7 @@ GET /example/_search
}
--------------------------------------------------
The above query can, similarly, be queried on `geo_point` fields.
[source,console]
@ -100,7 +104,9 @@ PUT /example_points/_doc/1?refresh
--------------------------------------------------
// TEST[continued]
Using the same query, the documents with matching `geo_point` fields are returned
Using the same query, the documents with matching `geo_point` fields are
returned.
[source,console]
--------------------------------------------------
@ -162,19 +168,19 @@ GET /example_points/_search
--------------------------------------------------
// TESTRESPONSE[s/"took" : 17/"took" : $body.took/]
==== Pre-Indexed Shape
The Query also supports using a shape which has already been indexed in
another index. This is particularly useful for when
you have a pre-defined list of shapes which are useful to your
application and you want to reference this using a logical name (for
example 'New Zealand') rather than having to provide their coordinates
each time. In this situation it is only necessary to provide:
The query also supports using a shape which has already been indexed in another
index. This is particularly useful for when you have a pre-defined list of
shapes and you want to reference the list using
a logical name (for example 'New Zealand') rather than having to provide
coordinates each time. In this situation, it is only necessary to provide:
* `id` - The ID of the document that containing the pre-indexed shape.
* `index` - Name of the index where the pre-indexed shape is. Defaults
to 'shapes'.
* `path` - The field specified as path containing the pre-indexed shape.
* `index` - Name of the index where the pre-indexed shape is. Defaults to
'shapes'.
* `path` - The field specified as path containing the pre-indexed shape.
Defaults to 'shape'.
* `routing` - The routing of the shape document if required.
@ -222,27 +228,31 @@ GET /example/_search
}
--------------------------------------------------
==== Spatial Relations
The <<spatial-strategy, geo_shape strategy>> mapping parameter determines
which spatial relation operators may be used at search time.
The <<spatial-strategy, geo_shape strategy>> mapping parameter determines which
spatial relation operators may be used at search time.
The following is a complete list of spatial relation operators available when searching a field of type `geo_shape`:
The following is a complete list of spatial relation operators available when
searching a field of type `geo_shape`:
* `INTERSECTS` - (default) Return all documents whose `geo_shape` field
intersects the query geometry.
* `DISJOINT` - Return all documents whose `geo_shape` field
has nothing in common with the query geometry.
* `WITHIN` - Return all documents whose `geo_shape` field
is within the query geometry.
* `CONTAINS` - Return all documents whose `geo_shape` field
contains the query geometry.
* `DISJOINT` - Return all documents whose `geo_shape` field has nothing in
common with the query geometry.
* `WITHIN` - Return all documents whose `geo_shape` field is within the query
geometry.
* `CONTAINS` - Return all documents whose `geo_shape` field contains the query
geometry.
When searching a field of type `geo_point` there is a single supported spatial relation operator:
When searching a field of type `geo_point` there is a single supported spatial
relation operator:
* `INTERSECTS` - (default) Return all documents whose `geo_point` field
* `INTERSECTS` - (default) Return all documents whose `geo_point` field
intersects the query geometry.
[float]
==== Ignore Unmapped
@ -252,9 +262,11 @@ querying multiple indexes which might have different mappings. When set to
`false` (the default value) the query will throw an exception if the field
is not mapped.
==== Shape Types supported for Geo-Point
When searching a field of type `geo_point` the following shape types are not supported:
When searching a field of type `geo_point` the following shape types are not
supported:
* `POINT`
* `LINE`
@ -262,5 +274,43 @@ When searching a field of type `geo_point` the following shape types are not sup
* `MULTILINE`
==== Notes
Geo-shape queries on geo-shapes implemented with <<prefix-trees, `PrefixTrees`>> will not be executed if
<<query-dsl-allow-expensive-queries, `search.allow_expensive_queries`>> is set to false.
* Geo-shape queries on geo-shapes implemented with
<<prefix-trees, `PrefixTrees`>> will not be executed if
<<query-dsl-allow-expensive-queries, `search.allow_expensive_queries`>> is set
to false.
* When data is indexed in a `geo_shape` field as an array of shapes, the arrays
are treated as one shape. For this reason, the following requests are
equivalent.
[source,console]
--------------------------------------------------
PUT /test/_doc/1
{
"location": [
{
"coordinates": [46.25,20.14],
"type": "point"
},
{
"coordinates": [47.49,19.04],
"type": "point"
}
]
}
--------------------------------------------------
[source,console]
--------------------------------------------------
PUT /test/_doc/1
{
"location":
{
"coordinates": [[46.25,20.14],[47.49,19.04]],
"type": "multipoint"
}
}
--------------------------------------------------