Elasticsearch function_score for recipe app. Updated with using groovy as scripting language, Elasticsearch version 1.3.0

Checking out the list of ingredients

curl -XPOST "http://localhost:9200/seasonalfoods/_search" -d'
{
   "size": 0,
   
   "aggs": {
     "ingredients": {
          "filter": { "terms": {
         "ingredients": [
            "jordbær",
            "rips",
            "solbær",
            "poteter",
            "timian",
            "gressløk",
            "mynte",
            "basilikum"
         ]
      }},
      "aggs": {
          "filteredIngs":{
         "terms": {
            "field": "ingredients",
             "size": 100

         }}
              }
   }
}
}'

date_score_function

"linear": {
        "date": {
            "scale": "700d",
            "decay": 0.5
        }
}

function_score

curl - XPOST "http://localhost:9200/seasonalfoods/_search" - d '
{
    "query": {
        "function_score": {
            "score_mode": "sum",
            "boost_mode": "replace",
            "filter": {
                "bool": {
                    "must": {
                        "terms": {
                            "ingredients": ["jordbær","rips","solbær","poteter","timian","gressløk","mynte","basilikum"]
                        }
                    }
                }
            },
            "functions": [{
                "linear": {
                    "date": {
                        "scale": "700d",
                        "decay": 0.5
                    }
                }
            }, {
                "script_score": {
                    "params": {
                        "field": "ingredients",
                        "terms": ["jordbær","rips","solbær","poteter","timian","gressløk","mynte","basilikum"]
                    },
                    "script": "def score=0;for(term in terms){ if ( _index[field][term].tf() > 0){ score +=1}};                          score;",
                    "lang": "groovy"
                }
            }]
        }
    },
    "highlight": {
        "pre_tags": [""],
        "post_tags": [""],
        "fields": {
            "ingredients": {}
        },
        "highlight_query": {
            "terms": {
                "ingredients": ["jordbær","rips","solbær","poteter","timian","gressløk","mynte","basilikum"]
            }

        }
    }
}'

script_score_function

float score = 0; 
for (term : terms) { 
   if ( _index[field][term] != null &&  _index[field][term].tf() > 0) {
      score +=1;
   }; 
}  
return score;

script_score_groovy

def score=0;
for(term in terms){ 
   if ( _index[field][term].tf() > 0){ 
      score +=1
   }
};  
score;

terms

curl -XPOST "http://localhost:9200/seasonalfoods/_search" -d'
{ "explain":true,
   "query": {
      "terms": {
         "ingredients": ["jordbær","rips","solbær","poteter","timian","gressløk","mynte","basilikum"]
      }
   },
   "highlight": {
      "pre_tags": [
         ""
      ],
      "post_tags": [
         ""
      ],
      "fields": {
         "ingredients": {}
      }
   }
}'