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Validate API
editValidate API
editThe validate API allows a user to validate a potentially expensive query without executing it. The following example shows how it can be used:
curl -XPUT 'http://localhost:9200/twitter/tweet/1' -d '{
"user" : "kimchy",
"post_date" : "2009-11-15T14:12:12",
"message" : "trying out Elastic Search"
}'
When the query is valid, the response contains valid:true:
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:
curl -XGET 'http://localhost:9200/twitter/tweet/_validate/query' -d '{
"filtered" : {
"query" : {
"query_string" : {
"query" : "*:*"
}
},
"post_filter" : {
"term" : { "user" : "kimchy" }
}
}
}'
{"valid":true,"_shards":{"total":1,"successful":1,"failed":0}}
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:
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:
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\""
} ]
}