From b2d8f8e4b50f3c32c07de25b550422c1d9751375 Mon Sep 17 00:00:00 2001
From: Haydar KULEKCI <haydarkulekci@gmail.com>
Date: Thu, 9 Aug 2018 14:58:51 +0300
Subject: [PATCH] es search improvements

---
 README.md                        | 45 +++++++++++++++++++++++++++++---
 services/productSearchService.js |  8 +++---
 2 files changed, 45 insertions(+), 8 deletions(-)

diff --git a/README.md b/README.md
index e6dc67f..9438c10 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,23 @@ PUT products
 {
   "settings": {
     "number_of_shards": 1,
-    "number_of_replicas": 0
+    "number_of_replicas": 0,
+    "analysis": {
+      "analyzer": {
+        "autocomplete_analyzer" : {
+          "type" : "custom",
+          "tokenizer": "standard",
+          "filter": ["lowercase", "autocomplete_filter"]
+        }
+      },
+      "filter": {
+        "autocomplete_filter": {
+          "type": "edge_ngram",
+          "min_gram": 2,
+          "max_gram": 10
+        }
+      }
+    }
   }
 }
 
@@ -49,10 +65,24 @@ PUT products/product/_mapping
 {
   "properties": {
     "name": {
-      "type": "text"
+      "type": "text",
+      "fields": {
+        "autocomplete": {
+          "type": "text", 
+          "analyzer": "autocomplete_analyzer",
+          "search_analyzer": "standard"
+        }
+      }
     },
     "description": {
-      "type": "text"
+      "type": "text",
+      "fields": {
+        "autocomplete": {
+          "type": "text", 
+          "analyzer": "autocomplete_analyzer",
+          "search_analyzer": "standard"
+        }
+      }
     },
     "quantity": {
       "type": "long"
@@ -75,7 +105,14 @@ PUT products/product/_mapping
           "type": "long"
         },
         "name": {
-          "type": "keyword"
+          "type": "keyword",
+          "fields": {
+            "autocomplete": {
+              "type": "text", 
+              "analyzer": "autocomplete_analyzer",
+              "search_analyzer": "standard"
+            }
+          }
         }
       }
     }
diff --git a/services/productSearchService.js b/services/productSearchService.js
index c4f9918..55d9920 100644
--- a/services/productSearchService.js
+++ b/services/productSearchService.js
@@ -2,8 +2,7 @@ var db = require('./../libraries/elasticsearch');
 
 exports.getRecords = function(params, callback) {
   body = {
-    query: {
-    },
+    query: {},
     size: 50
   };
 
@@ -17,8 +16,9 @@ exports.getRecords = function(params, callback) {
 
   if (params.keyword) {
     body.query.query_string = {
-      "fields": ["name^4", "description^2", "categories.name^3"],
-      "query": params.keyword
+      "fields": ["name.autocomplete^10", "description.autocomplete^2", "categories.name.autocomplete^3"],
+      "query": params.keyword,
+      "default_operator": "AND"
     };
   }