Elastic search nested filter

gistfile1.txt

POST /activity
{"settings" : {
        "number_of_shards" : 1
    },
    "mappings" : {
        "activity" : {
            "properties": {
                "id": {
                    "type": "long"
                },
                "target": {
                    "type": "nested",
                    "properties": {
                        "name": {"type": "string", "index": "not_analyzed"},
                        "value": {"type": "string", "index": "not_analyzed"}
                    }
                }
            }
        }
    }
}

POST /activity/activity/123
{
    "id": 123,
    "target": [
        {
            "name": "component",
            "value": "ex-generic"
        },
        {
            "name": "config",
            "value": "123"
        }
    ]
}

POST /activity/activity/125
{
    "id": 125,
    "target": [
        {
            "name": "component",
            "value": "ex-generic"
        },
        {
            "name": "config",
            "value": "dalsi"
        }
    ]
}

POST /activity/activity/126
{
    "id": 126,
    "target": [
        {
            "name": "component",
            "value": "ex-google-drive"
        },
        {
            "name": "config",
            "value": "dalsi"
        }
    ]
}


POST /activity/activity/_search
{
    "query": {
        "filtered": {
           "query": {"match_all": {}},
           "filter": {
               "bool": {
                "must": [
                   {
                       "nested": {
                          "path": "target",
                          "filter": {
                              "bool": {
                                  "must": [
                                     {
                                         "term": {
                                            "target.name": "component"
                                         }
                                     },
                                     {
                                         "term": {
                                            "target.value": "ex-generic"
                                         }
                                     }
                                  ]
                              }
                          }
                       }
                   },
                   {
                       "nested": {
                          "path": "target",
                          "filter": {
                              "bool": {
                                  "must": [
                                     {
                                         "term": {
                                            "target.name": "config"
                                         }
                                     },
                                     {
                                         "term": {
                                            "target.value": "dalsi"
                                         }
                                     }
                                  ]
                              }
                          }
                       }
                   }
                ]
               }
           }
        }
    }
}