Elasticsearch,java API, Transport Client, query when the index library can use wildcards * and delete interfaces can not be used

1, Get transport Client Connection instance

  /**     * Get the connection client instance of ES;     *     * @return transportclient Object     *    /private static transportclient gettransportclient (String esIp) throws IOException {        Settings Settings = Settings.builder ()                . Put (cluster_name, "xxx")                . Put (ELASTIC. Client_transport_sniff, True)                . Build ();        Transportclient transportclient = Transportclient.builder (). settings (Settings). build ();        String[] IPs =esip.split (",");        for (String ip:ips) {            try {                inetsockettransportaddress ist = new Inetsockettransportaddress ( Inetaddress.getbyname (IP), elastic.es_transportclient_port);                Transportclient.addtransportaddress (IST);            } catch (Exception e) {            }        }        return transportclient;    }

　　

2, encapsulates the query object, can be used with the * Wildcard index library, and set the maximum number of returns

  @Test public void Querysearch () throws IOException {long L = system.currenttimemillis ();        Transportclient transportclient = Factory.gettransportclient (); Encapsulates the query condition for aggregations rangequerybuilder Rangequerybuilder = Querybuilders.rangequery (Time_field). from (StartTime). to (EndTime)        ;       Matchquerybuilder Matchquerybuilder = querybuilders.matchquery ("xx", "xxx");        QueryBuilder QueryBuilder = Querybuilders.matchallquery (); Boolquerybuilder Boolquerybuilder = new Boolquerybuilder (). Must (Rangequerybuilder). must (Matchquerybuilder);//using wildcard characters        ' * ' to prefix all index libraries SearchResponse response=transportclient.preparesearch ("index*") that match the beginning of index. Settypes ("TYPE") Set query type//1.searchtype.dfs_query_then_fetch = exact query//2.searchtype.scan = Scan query, unordered//3.SearchTy Pe. COUNT = Not set, this is the default value, and some of them to try it. Setsearchtype (Searchtype.dfs_query_then_fetch)//Set query keywords. setquery (b Oolquerybuilder)//Set the location of the query data, paging with. sEtfrom (0)//sets the maximum number of bars for the query result set. SetSize (1000)//sets whether to sort by query matching. Setexplain (TRUE)///finally return to the search ring        should be information. Execute (). Actionget (); Searchhits searchhits=response.gethits ();//System.out.println ("-----------------in [" +term+ "] Search for keywords [" +querystring        +"]---------------------");        System.out.println (System.currenttimemillis ()-L);        System.out.println ("co-match to:" +searchhits.gettotalhits () + "strip record!");        Searchhit[]hits=searchhits.gethits ();            for (Searchhit searchhit:hits) {map<string, object> sourceasmap=searchhit.sourceasmap ();            Set<string> Keyset=sourceasmap.keyset (); The for (String string:keyset) {//key value values correspond to System.out.println (string+ ":" +sourceasmap.            Get (string));        } System.out.println ();　 }    }

3, delete index document interface according to ID, single and batch, delete interface index library cannot match with wildcard ' * '

1, single ID delete index document

Index: Indexed library name (cannot be used with wildcards), type: Index library type, ID index library ID  deleteresponse deleteresponse = Client.preparedelete ("index", " TYPE "," ID "). get ();       Successfully removed if (Deleteresponse.isfound ()) {    successes.add (rowkey);} else {    failedes.add (rowkey);  }

2. Bulk Delete index document according to IDs

@Test
  public void Removedatafromes () throws IOException {        arraylist<string> xxx= new arraylist<> ();        Xxx.add ("201801001");        Xxx.add ("201801001");        Transportclient client = Factory.gettransportclient ();        Bulkrequestbuilder Builder=client.preparebulk ();        for (String id:xxx) {            System.out.println (ID);            Builder.add (Client.preparedelete ("INDEX", "TYPE", id). request ());
        }}bulkresponse bulkresponse = Builder.get ();

2,elasticseach performance is not good when searching for data based on the time of the index.

Elasticsearch,java API, Transport Client, query when the index library can use wildcards * and delete interfaces can not be used