src/admin/md/api_indexes.md
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### indexes (LiteStore Indexes)
> %note%
> API v5 Required
>
> This resource has been introduced in version 5 of the LiteStore API.
LiteStore Indexes are special indexes used to optimize the performance of queries on JSON documents.
> %warning%
> JSON-only Documents Required!
>
> Indexes can be created *only* if the entire database is composed by JSON documents. If not, LiteStore will return an error when attempting to create the first index.
#### OPTIONS indexes
Returns the allowed HTTP verbs for this resource.
##### Example
```
$ curl -i -X OPTIONS http://127.0.0.1:9500/indexes
HTTP/1.1 200 OK
server: LiteStore/1.7.0
access-control-allow-origin: http://localhost:9500
access-control-allow-headers: Content-Type
allow: GET,OPTIONS
access-control-allow-methods: GET,OPTIONS
content-length: 0
```
#### OPTIONS indexes/:id
Returns the allowed HTTP verbs for this resource.
##### Example
```
$ curl -i -X OPTIONS http://127.0.0.1:9500/indexes/name
HTTP/1.1 200 OK
server: LiteStore/1.7.0
access-control-allow-origin: http://localhost:9500
access-control-allow-headers: Content-Type
allow: GET,OPTIONS,PUT,DELETE
access-control-allow-methods: GET,OPTIONS,PUT,DELETE
Content-Length: 0
```
#### GET indexes
Retrieves all indexes and their respective JSON fields.
##### `like` option
If this option is specified, retrieves all indexes matching the specified string.
> %tip%
> Wildcards
>
> You can use asterisks (\*) as wildcards.
##### `limit` and `offset` options
Provide a way to implement pagination:
* **limit** causes the query to retrieve only the first _n_ results.
* **offset** causes the query to skip the first _n_ results.
##### Example
```
$ curl -i http://localhost:9500/indexes/?like=%2Aname%2A
HTTP/1.1 200 OK
server: LiteStore/1.7.0
access-control-allow-origin: http://localhost:9500
content-type: application/json
vary: Origin
access-control-allow-headers: Content-Type
Content-Length: 244
{
"like": "*name*",
"total": 2,
"execution_time": 0.0006140000000000001,
"results": [
{
"id": "name",
"field": "$.name"
},
{
"id": "document.name",
"field": "$.document.name"
}
]
}
```
#### GET index/:id
Retrieves the specified index and corresponding JSON field.
##### Example
```
$ curl -i http://localhost:9500/indexes/name
HTTP/1.1 200 OK
server: LiteStore/1.7.0
access-control-allow-origin: http://localhost:9500
content-type: application/json
vary: Origin
access-control-allow-headers: Content-Type
Content-Length: 30
{"id":"name","field":"$.name"}
```
#### PUT indexes/:id
Creates a new index with the specified ID.
> %warning%
> No updates
>
> It is not possible to update an existing index. Delete it and re-create it instead.
##### Example
```
$ curl -i -X PUT -d '{"field": "$.name"}' 'http://127.0.0.1:9500/indexes/name' --header "Content-Type:application/json"
HTTP/1.1 201 Created
Content-Length: 31
Content-Type: application/json
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Origin: http://localhost:9500
Server: LiteStore/1.7.0
{"id":"name", "field":"$.name"}
```
#### DELETE indexes/:id
Deletes the specified index.
##### Example
```
$ curl -i -X DELETE 'http://127.0.0.1:9500/indexes/name'
HTTP/1.1 204 No Content
Content-Length: 0
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Origin: http://localhost:9500
Server: LiteStore/1.7.0
```
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