78 lines
3.4 KiB
Markdown
78 lines
3.4 KiB
Markdown
---
|
|
layout: default
|
|
title: Get document
|
|
parent: Document APIs
|
|
nav_order: 5
|
|
---
|
|
|
|
# Get document
|
|
Introduced 1.0
|
|
{: .label .label-purple }
|
|
|
|
After adding a JSON document to your index, you can use the get document API operation to retrieve the document's information and data.
|
|
|
|
## Example
|
|
|
|
```json
|
|
GET sample-index1/_doc/1
|
|
```
|
|
{% include copy-curl.html %}
|
|
|
|
## Path and HTTP methods
|
|
|
|
```
|
|
GET <index>/_doc/<_id>
|
|
HEAD <index>/_doc/<_id>
|
|
```
|
|
```
|
|
GET <index>/_source/<_id>
|
|
HEAD <index>/_source/<_id>
|
|
```
|
|
|
|
## URL parameters
|
|
|
|
All get document URL parameters are optional.
|
|
|
|
Parameter | Type | Description
|
|
:--- | :--- | :---
|
|
preference | String | Specifies a preference of which shard to retrieve results from. Available options are `_local`, which tells the operation to retrieve results from a locally allocated shard replica, and a custom string value assigned to a specific shard replica. By default, OpenSearch executes get document operations on random shards.
|
|
realtime | Boolean | Specifies whether the operation should run in realtime. If false, the operation waits for the index to refresh to analyze the source to retrieve data, which makes the operation near-realtime. Default is true.
|
|
refresh | Boolean | If true, OpenSearch refreshes shards to make the get operation available to search results. Valid options are `true`, `false`, and `wait_for`, which tells OpenSearch to wait for a refresh before executing the operation. Default is `false`.
|
|
routing | String | A value used to route the operation to a specific shard.
|
|
stored_fields | Boolean | Whether the get operation should retrieve fields stored in the index. Default is false.
|
|
_source | String | Whether to include the `_source` field in the response body. Default is true.
|
|
_source_excludes | String | A comma-separated list of source fields to exclude in the query response.
|
|
_source_includes | String | A comma-separated list of source fields to include in the query response.
|
|
version | Integer | The version of the document to return, which must match the current version of the document.
|
|
version_type | Enum | Retrieves a specifically typed document. Available options are `external` (retrieve the document if the specified version number is greater than the document's current version) and `external_gte` (retrieve the document if the specified version number is greater than or equal to the document's current version). For example, to retrieve version 3 of a document, use `/_doc/1?version=3&version_type=external`.
|
|
|
|
|
|
## Response
|
|
```json
|
|
{
|
|
"_index": "sample-index1",
|
|
"_id": "1",
|
|
"_version": 1,
|
|
"_seq_no": 0,
|
|
"_primary_term": 9,
|
|
"found": true,
|
|
"_source": {
|
|
"text": "This is just some sample text."
|
|
}
|
|
}
|
|
```
|
|
|
|
## Response body fields
|
|
|
|
Field | Description
|
|
:--- | :---
|
|
_index | The name of the index.
|
|
_id | The document's ID.
|
|
_version | The document's version number. Updated whenever the document changes.
|
|
_seq_no | The sequnce number assigned when the document is indexed.
|
|
primary_term | The primary term assigned when the document is indexed.
|
|
found | Whether the document exists.
|
|
_routing | The shard that the document is routed to. If the document is not routed to a particular shard, this field is omitted.
|
|
_source | Contains the document's data if `found` is true. If `_source` is set to false or `stored_fields` is set to true in the URL parameters, this field is omitted.
|
|
_fields | Contains the document's data that's stored in the index. Only returned if both `stored_fields` and `found` are true.
|