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[[search-validate]]
== Validate API
The validate API allows a user to validate a potentially expensive query
without executing it. The following example shows how it can be used:
[source,js]
--------------------------------------------------
curl -XPUT 'http://localhost:9200/twitter/tweet/1' -d '{
"user" : "kimchy",
"post_date" : "2009-11-15T14:12:12",
"message" : "trying out Elasticsearch"
}'
--------------------------------------------------
When the query is valid, the response contains `valid:true`:
[source,js]
--------------------------------------------------
curl -XGET 'http://localhost:9200/twitter/_validate/query?q=user:foo'
{"valid":true,"_shards":{"total":1,"successful":1,"failed":0}}
--------------------------------------------------
Or, with a request body:
[source,js]
--------------------------------------------------
curl -XGET 'http://localhost:9200/twitter/tweet/_validate/query' -d '{
"query" : {
"filtered" : {
"query" : {
"query_string" : {
"query" : "*:*"
}
},
"filter" : {
"term" : { "user" : "kimchy" }
}
}
}
}'
{"valid":true,"_shards":{"total":1,"successful":1,"failed":0}}
--------------------------------------------------
NOTE: The query being sent in the body must be nested in a `query` key, same as
the <<search-search,search api>> works added[1.0.0.RC1,The query was previously the top-level object].
If the query is invalid, `valid` will be `false`. Here the query is
invalid because Elasticsearch knows the post_date field should be a date
due to dynamic mapping, and 'foo' does not correctly parse into a date:
[source,js]
--------------------------------------------------
curl -XGET 'http://localhost:9200/twitter/tweet/_validate/query?q=post_date:foo'
{"valid":false,"_shards":{"total":1,"successful":1,"failed":0}}
--------------------------------------------------
An `explain` parameter can be specified to get more detailed information
about why a query failed:
[source,js]
--------------------------------------------------
curl -XGET 'http://localhost:9200/twitter/tweet/_validate/query?q=post_date:foo&pretty=true&explain=true'
{
"valid" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"failed" : 0
},
"explanations" : [ {
"index" : "twitter",
"valid" : false,
"error" : "org.elasticsearch.index.query.QueryParsingException: [twitter] Failed to parse; org.elasticsearch.ElasticsearchParseException: failed to parse date field [foo], tried both date format [dateOptionalTime], and timestamp number; java.lang.IllegalArgumentException: Invalid format: \"foo\""
} ]
}
--------------------------------------------------
|
