Percolator field type

A percolator field type specifies to treat this field as a query. Any JSON object field can be marked as a percolator field. Normally, documents are indexed and searches are run against them. When you use a percolator field, you store a search, and later the percolate query matches documents to that search.

Example

A customer is searching for a table priced at $400 or less and wants to create an alert for this search.

Create a mapping assigning a percolator field type to the query field:

  1. PUT testindex1
  2. {
  3.   "mappings": {
  4.     "properties": {
  5.       "search": {
  6.         "properties": {
  7.           "query": { 
  8.             "type": "percolator" 
  9.           }
  10.         }
  11.       },
  12.       "price": { 
  13.         "type": "float" 
  14.       },
  15.       "item": { 
  16.         "type": "text" 
  17.       }
  18.     }
  19.   }
  20. }

Index a query:

  1. PUT testindex1/_doc/1
  2. {
  3.   "search": {
  4.     "query": {
  5.       "bool": {
  6.         "filter": [
  7.           { 
  8.             "match": { 
  9.               "item": { 
  10.                 "query": "table" 
  11.               }
  12.             }
  13.           },
  14.           { 
  15.             "range": { 
  16.               "price": { 
  17.                 "lte": 400.00 
  18.               } 
  19.             } 
  20.           }
  21.         ]
  22.       }
  23.     }
  24.   }
  25. }

Fields referenced in the query must already exist in the mapping.

Run a percolate query to search for matching documents:

  1. GET testindex1/_search
  2. {
  3.   "query" : {
  4.     "bool" : {
  5.       "filter" : 
  6.         {
  7.           "percolate" : {
  8.             "field" : "search.query",
  9.             "document" : {
  10.               "item" : "Mahogany table",
  11.               "price": 399.99
  12.             }
  13.           }
  14.         }
  15.     }
  16.   }
  17. }

The response contains the originally indexed query:

  1. {
  2.   "took" : 30,
  3.   "timed_out" : false,
  4.   "_shards" : {
  5.     "total" : 1,
  6.     "successful" : 1,
  7.     "skipped" : 0,
  8.     "failed" : 0
  9.   },
  10.   "hits" : {
  11.     "total" : {
  12.       "value" : 1,
  13.       "relation" : "eq"
  14.     },
  15.     "max_score" : 0.0,
  16.     "hits" : [
  17.       {
  18.         "_index" : "testindex1",
  19.         "_type" : "_doc",
  20.         "_id" : "1",
  21.         "_score" : 0.0,
  22.         "_source" : {
  23.           "search" : {
  24.             "query" : {
  25.               "bool" : {
  26.                 "filter" : [
  27.                   {
  28.                     "match" : {
  29.                       "item" : {
  30.                         "query" : "table"
  31.                       }
  32.                     }
  33.                   },
  34.                   {
  35.                     "range" : {
  36.                       "price" : {
  37.                         "lte" : 400.0
  38.                       }
  39.                     }
  40.                   }
  41.                 ]
  42.               }
  43.             }
  44.           }
  45.         },
  46.         "fields" : {
  47.           "_percolator_document_slot" : [
  48.             0
  49.           ]
  50.         }
  51.       }
  52.     ]
  53.   }
  54. }