# How apply a filter on MLT request with Java API? **URL:** \ **Category:** Elasticsearch\ **Created:** [November 16, 2012, 8:52am UTC](https://discuss.elastic.co/t/how-apply-a-filter-on-mlt-request-with-java-api/9737 "2012-11-16T08:52:51Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Atharva\_Patel](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/atharva_patel/32/2414_2.png) [@Atharva\_Patel](https://discuss.elastic.co/u/Atharva_Patel)\ **Post date:** [November 16, 2012, 8:52am UTC](https://discuss.elastic.co/t/how-apply-a-filter-on-mlt-request-with-java-api/9737/1 "2012-11-16T08:52:51Z")
As I want to perform MLT query with doc id in my hand, I have two questions. 1. Is it possible to perform MLT query by passing just a docID in case where the \_source is disabled? Reason is my document size will be large, so I don't feel it feasible either to send a like\_text or enabling \_source as both can explode the memory requirements. 2. How can I apply a filter on the MLT request from Java API? -- ---
**Author:** ![jprante](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jprante/32/44941_2.png) [@jprante](https://discuss.elastic.co/u/jprante)\ **Post date:** [November 19, 2012, 12:25am UTC](https://discuss.elastic.co/t/how-apply-a-filter-on-mlt-request-with-java-api/9737/2 "2012-11-19T00:25:32Z")
1. yes, you can use the fields parameter to use mlt without an enabled \_source. Only if you do not provide fields, mlt is falling back to use \_source 2. mlt filter is not implemented at the moment, but it seems possible by introducing a filter parameter to the mlt action Cheers, Jörg On Friday, November 16, 2012 9:52:51 AM UTC+1, Atharva Patel wrote: > As I want to perform MLT query with doc id in my hand, I have two > questions. > > 1. Is it possible to perform MLT query by passing just a docID in case > where the \_source is disabled? Reason is my document size will be large, so > I don't feel it feasible either to send a like\_text or enabling \_source as > both can explode the memory requirements. > > 2. How can I apply a filter on the MLT request from Java API? -- ---
**Author:** ![Atharva\_Patel](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/atharva_patel/32/2414_2.png) [@Atharva\_Patel](https://discuss.elastic.co/u/Atharva_Patel)\ **Post date:** [November 22, 2012, 4:11am UTC](https://discuss.elastic.co/t/how-apply-a-filter-on-mlt-request-with-java-api/9737/3 "2012-11-22T04:11:23Z")
Thanks for the reply Jorg! When I try out performing MTL query using MLT API [http://goo.gl/oEwFH](http://goo.gl/oEwFH), it gives me error: {"error":"ElasticSearchException[No fields found to fetch the 'likeText' from]","status":500} Am I missing something? I would like to highlight that I am neither storing the fields or enabling \_source. Is it still possible to perform MLT query with that docID? How? I have mentioned the fields 'analyzed'. Do I need to do anything else also? On Monday, 19 November 2012 05:55:33 UTC+5:30, Jörg Prante wrote: > 1. yes, you can use the fields parameter to use mlt without an enabled > \_source. Only if you do not provide fields, mlt is falling back to use > \_source > > 2. mlt filter is not implemented at the moment, but it seems possible by > introducing a filter parameter to the mlt action > > Cheers, > > Jörg > > On Friday, November 16, 2012 9:52:51 AM UTC+1, Atharva Patel wrote: > > > As I want to perform MLT query with doc id in my hand, I have two > > questions. > > > > 1. Is it possible to perform MLT query by passing just a docID in case > > where the \_source is disabled? Reason is my document size will be large, so > > I don't feel it feasible either to send a like\_text or enabling \_source as > > both can explode the memory requirements. > > > > 2. How can I apply a filter on the MLT request from Java API? -- ---
**Author:** ![jprante](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jprante/32/44941_2.png) [@jprante](https://discuss.elastic.co/u/jprante)\ **Post date:** [November 23, 2012, 6:24pm UTC](https://discuss.elastic.co/t/how-apply-a-filter-on-mlt-request-with-java-api/9737/4 "2012-11-23T18:24:31Z")
Hi Atharva, if you don't have fields stored, and no \_source is enabled, you are out of luck. MoreLikeThis works by executing two actions: first, a get request on the given document, fetching a stored field content for the likeText search query (falling ack to \_source if no fields are specified), then populating the parameters before executing a generated search as the second action. Best regards, Jörg -- ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 3:03am UTC](https://discuss.elastic.co/t/how-apply-a-filter-on-mlt-request-with-java-api/9737/5 "2017-07-06T03:03:06Z")