Elasticsearch Java additions and deletions to check version 1

Since it is a development article, mainly in code-oriented, auxiliary some instructions. All the content is actually validated by the code.

The header file introduced:

Import static Org.elasticsearch.node.NodeBuilder.nodeBuilder;
Import java.io.IOException;
Import java.net.InetAddress;
Import Java.util.Date;
Import Java.util.Map;
 
Import Java.util.Set;
Import Org.elasticsearch.action.admin.cluster.health.ClusterHealthResponse;
Import Org.elasticsearch.action.admin.indices.create.CreateIndexRequestBuilder;
Import Org.elasticsearch.action.admin.indices.create.CreateIndexResponse;
Import Org.elasticsearch.action.index.IndexResponse;
Import org.elasticsearch.client.Client;
Import org.elasticsearch.client.ClusterAdminClient;
Import org.elasticsearch.client.transport.TransportClient;
Import Org.elasticsearch.cluster.health.ClusterIndexHealth;
Import org.elasticsearch.common.settings.Settings;
Import org.elasticsearch.common.transport.InetSocketTransportAddress;
Import Org.elasticsearch.common.xcontent.XContentBuilder;
Import Org.elasticsearch.common.xcontent.XContentFactory;
Import Org.elasticsearch.node.Node; Import Static Org.elasticsearch.common.xconTent. xcontentfactory.*;

Create an index

Xcontentbuilder mapping = Xcontentfactory.jsonbuilder (). StartObject (). StartObject ("Settings"). Fie
    LD ("Number_of_shards", 1)//sets the number of fragments. Field ("Number_of_replicas", 0)/Set the number of replicas. EndObject () EndObject ()
               . StartObject (). StartObject (type)//type name. StartObject ("Properties")//The following is setting document column properties. . StartObject ("type"). Field ("Type", "string"). Field ("Store", "yes"). EndObject (). StartObject ("EventCount"). Field ("Type", "Long"). Field ("Store", "yes"). EndObject (). StartObject ("Eventdate"). Field ("Type", "date"). Fie LD ("format", "Dateoptionaltime"). Field ("Store", "yes"). EndObject (). StartObject ("message"). Field ("Type", "s
    Tring "). Field (" Index "," not_analyzed "). Field (" Store "," yes "). EndObject (). EndObject (). EndObject ()
                        
. EndObject (); Createindexrequestbuilder CIRB = client. Admin (). Indices (). Preparecreate (Indexname)//index name. SetSource (mapping);
Createindexresponse response = Cirb.execute (). Actionget ();  if (response.isacknowledged ()) {System.out.println ("index created.");} else {System.err.println ("Index creation Failed. ");}

Add Document

Indexresponse response = client
        . Prepareindex (IndexName, type, "1")
        . SetSource (//Here you can use the JSON string
                directly Jsonbuilder (). StartObject (). Field ("
                    type", "Syslog")
                    . Field ("EventCount", 1)
                    . Field ("Eventdate", new Date ()).
                    Field ("Message", "Secilog insert Doc test")
                . EndObject ())
. System.out.println ("Index:" +response.getindex ()
        + "Insert Doc ID:" +response.getid ()
        + "Result:" + Response.iscreated ());

Querying documents

GetResponse response = Client.prepareget ("Secilog", "Log", "1"). get ();
String Source = Response.getsource (). toString ();
Long Version = Response.getversion ();
String IndexName = Response.getindex ();
String type = Response.gettype ();
String id = response.getid ();

Modify Document

There are two ways to modify a document, one is to modify it directly, and the other is to modify it if the document does not exist.

First kind of code

Updaterequest updaterequest = new Updaterequest ();
Updaterequest.index (indexname);
Updaterequest.type (type);
Updaterequest.id ("1");
Updaterequest.doc (Jsonbuilder ()
        . StartObject ().
            field ("Type", "File")
        . EndObject ());
Client.update (updaterequest). get ();

The second type of code:

Indexrequest indexrequest = new Indexrequest (IndexName, type, "3")
. Source (Jsonbuilder ()
    . StartObject ()
        . Field ("Type", "Syslog")
        . Field ("EventCount", 2)
        . Field ("Eventdate", New Date ())
        . Field ("Message", " Secilog Insert Doc Test ")
    . EndObject ());
Updaterequest updaterequest = new Updaterequest (IndexName, type, "3")
    . Doc (Jsonbuilder ()
        . StartObject ()
            . Field ("Type", "File")
        . EndObject ())
    . Upsert (indexrequest);              
Client.update (updaterequest). get ();

Delete Document

Deleteresponse dresponse = Client.preparedelete ("Secilog", "Log", "4"). get ();
Boolean isfound = Dresponse.isfound (); The document exists to return true and does not exist to return false;

Delete Index

Deleteindexrequest Delete = new Deleteindexrequest ("Secilog");
Client.admin (). Indices (). Delete (delete);