curl -XGET 'http://elastic:changeme@localhost:9200/nsp/workUnit/3157/_explain?pretty' -d '{"query":{"match":{"_all":{"query":"Ředitel"}}}}'

>

{
  "_index" : "nsp",
  "_type" : "workUnit",
  "_id" : "3157",
  "matched" : true,
  "explanation" : {
    "value" : 40.283817,
    "description" : "sum of:",
    "details" : [
      {
        "value" : 40.283817,
        "description" : "weight(_all:ředitel in 141443) [PerFieldSimilarity], product of:",
        "details" : [
          {
            "value" : 7.32433,
            "description" : "score(doc=141443,freq=2.0 = termFreq=2.0\n), product of:",
            "details" : [
              {
                "value" : 4.816691,
                "description" : "idf(docFreq=4, docCount=555)",
                "details" : [ ]
              },
              {
                "value" : 1.5206145,
                "description" : "tfNorm, computed from:",
                "details" : [
                  {
                    "value" : 2.0,
                    "description" : "termFreq=2.0",
                    "details" : [ ]
                  },
                  {
                    "value" : 1.2,
                    "description" : "parameter k1",
                    "details" : [ ]
                  },
                  {
                    "value" : 0.75,
                    "description" : "parameter b",
                    "details" : [ ]
                  },
                  {
                    "value" : 1552.6469,
                    "description" : "avgFieldLength",
                    "details" : [ ]
                  },
                  {
                    "value" : 1024.0,
                    "description" : "fieldLength",
                    "details" : [ ]
                  }
                ]
              }
            ]
          },
          {
            "value" : 5.5,
            "description" : "payloadBoost=5.5",
            "details" : [ ]
          }
        ]
      },
      {
        "value" : 0.0,
        "description" : "match on required clause, product of:",
        "details" : [
          {
            "value" : 0.0,
            "description" : "# clause",
            "details" : [ ]
          },
          {
            "value" : 0.0,
            "description" : "weight(_type:workUnit in 141443) [], result of:",
            "details" : [
              {
                "value" : 0.0,
                "description" : "score(doc=141443,freq=1.0), with freq of:",
                "details" : [
                  {
                    "value" : 1.0,
                    "description" : "termFreq=1.0",
                    "details" : [ ]
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  }
}
zajca@zajca-doma ~/git/nsp-base (git)-[feature/search] % curl -XGET 'http://elastic:changeme@localhost:9200/nsp/workUnit/3157/_explain?pretty' -d '{"query":{"match":{"_all":{"query":"Ředitel","analyzer":"cz"}}}}'

>

{
  "_index" : "nsp",
  "_type" : "workUnit",
  "_id" : "3157",
  "matched" : false,
  "explanation" : {
    "value" : 0.0,
    "description" : "Failure to meet condition(s) of required/prohibited clause(s)",
    "details" : [
      {
        "value" : 0.0,
        "description" : "no match on required clause (_all:reditel)",
        "details" : [
          {
            "value" : 0.0,
            "description" : "no matching term",
            "details" : [ ]
          }
        ]
      },
      {
        "value" : 0.0,
        "description" : "match on required clause, product of:",
        "details" : [
          {
            "value" : 0.0,
            "description" : "# clause",
            "details" : [ ]
          },
          {
            "value" : 0.0,
            "description" : "weight(_type:workUnit in 141443) [], result of:",
            "details" : [
              {
                "value" : 0.0,
                "description" : "score(doc=141443,freq=1.0), with freq of:",
                "details" : [
                  {
                    "value" : 1.0,
                    "description" : "termFreq=1.0",
                    "details" : [ ]
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  }
}

curl -XGET 'http://elastic:changeme@localhost:9200/nsp/workUnit/3157/_explain?pretty' -d '{"query":{"match":{"_all":{"query":"Reditel"}}}}'

>

{
  "_index" : "nsp",
  "_type" : "workUnit",
  "_id" : "3157",
  "matched" : false,
  "explanation" : {
    "value" : 0.0,
    "description" : "Failure to meet condition(s) of required/prohibited clause(s)",
    "details" : [
      {
        "value" : 0.0,
        "description" : "no match on required clause (_all:reditel)",
        "details" : [
          {
            "value" : 0.0,
            "description" : "no matching term",
            "details" : [ ]
          }
        ]
      },
      {
        "value" : 0.0,
        "description" : "match on required clause, product of:",
        "details" : [
          {
            "value" : 0.0,
            "description" : "# clause",
            "details" : [ ]
          },
          {
            "value" : 0.0,
            "description" : "weight(_type:workUnit in 141443) [], result of:",
            "details" : [
              {
                "value" : 0.0,
                "description" : "score(doc=141443,freq=1.0), with freq of:",
                "details" : [
                  {
                    "value" : 1.0,
                    "description" : "termFreq=1.0",
                    "details" : [ ]
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  }
}