[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. 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 The `geo_shape` query uses the same grid square representation as the
`geo_shape` mapping to find documents that have a shape that intersects `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 pre-indexed in another index. Both formats are defined below with
examples. examples.
==== Inline Shape Definition ==== Inline Shape Definition
Similar to the `geo_shape` type, the `geo_shape` query uses Similar to the `geo_shape` type, the `geo_shape` query uses
@ -49,8 +51,9 @@ POST /example/_doc?refresh
-------------------------------------------------- --------------------------------------------------
// TESTSETUP // 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] [source,console]
-------------------------------------------------- --------------------------------------------------
@ -77,6 +80,7 @@ GET /example/_search
} }
-------------------------------------------------- --------------------------------------------------
The above query can, similarly, be queried on `geo_point` fields. The above query can, similarly, be queried on `geo_point` fields.
[source,console] [source,console]
@ -100,7 +104,9 @@ PUT /example_points/_doc/1?refresh
-------------------------------------------------- --------------------------------------------------
// TEST[continued] // 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] [source,console]
-------------------------------------------------- --------------------------------------------------
@ -162,18 +168,18 @@ GET /example_points/_search
-------------------------------------------------- --------------------------------------------------
// TESTRESPONSE[s/"took" : 17/"took" : $body.took/] // TESTRESPONSE[s/"took" : 17/"took" : $body.took/]
==== Pre-Indexed Shape ==== Pre-Indexed Shape
The Query also supports using a shape which has already been indexed in The query also supports using a shape which has already been indexed in another
another index. This is particularly useful for when index. This is particularly useful for when you have a pre-defined list of
you have a pre-defined list of shapes which are useful to your shapes and you want to reference the list using
application and you want to reference this using a logical name (for a logical name (for example 'New Zealand') rather than having to provide
example 'New Zealand') rather than having to provide their coordinates coordinates each time. In this situation, it is only necessary to provide:
each time. In this situation it is only necessary to provide:
* `id` - The ID of the document that containing the pre-indexed shape. * `id` - The ID of the document that containing the pre-indexed shape.
* `index` - Name of the index where the pre-indexed shape is. Defaults * `index` - Name of the index where the pre-indexed shape is. Defaults to
to 'shapes'. 'shapes'.
* `path` - The field specified as path containing the pre-indexed shape. * `path` - The field specified as path containing the pre-indexed shape.
Defaults to 'shape'. Defaults to 'shape'.
* `routing` - The routing of the shape document if required. * `routing` - The routing of the shape document if required.
@ -222,27 +228,31 @@ GET /example/_search
} }
-------------------------------------------------- --------------------------------------------------
==== Spatial Relations ==== Spatial Relations
The <<spatial-strategy, geo_shape strategy>> mapping parameter determines The <<spatial-strategy, geo_shape strategy>> mapping parameter determines which
which spatial relation operators may be used at search time. 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` - (default) Return all documents whose `geo_shape` field
intersects the query geometry. intersects the query geometry.
* `DISJOINT` - Return all documents whose `geo_shape` field * `DISJOINT` - Return all documents whose `geo_shape` field has nothing in
has nothing in common with the query geometry. common with the query geometry.
* `WITHIN` - Return all documents whose `geo_shape` field * `WITHIN` - Return all documents whose `geo_shape` field is within the query
is within the query geometry. geometry.
* `CONTAINS` - Return all documents whose `geo_shape` field * `CONTAINS` - Return all documents whose `geo_shape` field contains the query
contains the query geometry. 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. intersects the query geometry.
[float] [float]
==== Ignore Unmapped ==== 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 `false` (the default value) the query will throw an exception if the field
is not mapped. is not mapped.
==== Shape Types supported for Geo-Point ==== 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` * `POINT`
* `LINE` * `LINE`
@ -262,5 +274,43 @@ When searching a field of type `geo_point` the following shape types are not sup
* `MULTILINE` * `MULTILINE`
==== Notes ==== 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"
}
}
--------------------------------------------------