elasticsearch java api

elasticsearch-5.x JAVA API Part II: Cluster Health and segment merging1. Cluster healthFirst define a class to store cluster health informationPackage Com.zw.elasticsearch.cluster;public class Clusterhealth {//Cluster name private String clustername; Number of nodes in cluster private int number_of_node; Active total number of pieces private int number_of_activ

Elasticsearch JAVA API is extremely extensive, it is obviously not realistic to introduce all the method meanings. From 1.x to 2.x, to 5.x, finally to 6.0, but also in just two or three years, I picked 5.4.0 version of the three parts of the usual use of sorting out, the meaning of the parameters of the method I do not introduce,

=NewGetquery (); Query.setid ("1");//The ID of the index Yanan Yanan = elasticsearchtemplate.queryforobject (query, Yanan.Class); System.out.println (Yanan.getgender ()); System.out.println (Yanan.getname ()); System.out.println (Yanan.getid ());//ID of the entity}Static Elasticsearchtemplate getelasticsearchtemplate (String ip,string clustername,int port) {//http://blog.csdn.net/ty4315/article/details/52434296"target=" _blank ">@ reference article 1http://blog.csdn.net/ljc2008110/article/detai

This blog describes an easy way to index multiple documents Elasticsearch. The support of the Bulk API enables you to perform batch additions, deletions, updates, and so on at one time. The bulk operation uses the UDP protocol, and UDP cannot ensure that data is not lost when communicating with the Elasticsearch server. First, Bulk

Elasticsearch supports batch addition or deletion of index documents. In Java APIs, bulkrequestbuilder is constructed, batch index/delete requests are added to bulkrequestbuilder, and bulkrequestbuilder is executed. The following is an example: Import static Org. elasticsearch. common. xcontent. xcontentfactory. *; bulkrequestbuilder bulkrequest = client. prepare

("192.168.0.224"9300));Added the Addplugin line.Iv. Delete all documents under one typeTo delete all documents under Blog/article:1. Command-line mode" Http://192.168.0.224:9200/blog/article/_query " ' {"query": { "match_all": {} }}'2.java APIImport Org.elasticsearch.action.deletebyquery.deletebyqueryaction;import Org.elasticsearch.action.deletebyquery.deletebyqueryrequestbuilder;import Org.elasticsearch.action.deletebyquery.deletebyqueryresponse

", "query": { "term": { "_parent": "London" } } } }}The search did not result in any results. All sorts of attempts were unsuccessful, and then the answers to the questions on the StackOverflow were answered, and the correct searches were made:Curl GET Company/employee/_search{" query": {" has_parent": {" type": "Branch", "query": { "IDs": { "values": ["London" ] } } } }The correspondin

Elasticsearch queries query conditions in JSON format. in Java APIs, Query Builder objects are constructed. elasticsearch fully supports querydsl-style queries. The construction class of querybuilder is querybuilders, the filter build class is filterbuilders. The following is an example of constructing querybuilder: Import static Org.

Elasticsearch Java API (ii): index create delete cluster managementElastic official website has the authoritative Java API English needs to be patient to see here to tidy up the basic operationCreate a MAVEN project to add dependencies First, customize a client to con

();Transportclient client = new prebuilttransportclient (settings);Other transport client settings include:Client.transport.ignore_cluster_name: Set to True to ignore the checksum of the cluster name when the node is connectedClient.transport.ping_timeout: Set the wait time for a node to get response, default 5 SecondsClient.transport.nodes_sampler_interval: How long does it take to get/ping list of nodes and connect, default 5 secondsThree. View cluster information list client.connected

(); LongThen, according to the primary key to update the ES information, which does not appear in the field to update, do not overwrite the original value.Updateresponse response = ElasticsearchConfig.client.prepareUpdate ("index", "type", "PRIMARY Key ID") . Setdoc ( Xcontentfactory.jsonbuilder (). startobject () field ("business Field 1", "2") . Field ("Busine

(Springjunit4classrunner.class) @ContextConfiguration (locations = "Classpath:applicationContext.xml") public class TestES {@Autowired @Qualifier ("esclient") Private CLient client; @Test public void Testsearch () {String index= "index_log_daily"; String type= "Uq_log"; String uquestion = "139"; String province = "Jiangsu"; SearchResponse SearchResponse = Client.preparesearch (index). Settypes (Type). Setquery (Quer Ybuilders.matchallquery ())//query all. Setquery (Q

First, a query, you need to establish a searchrequestbuilder, which will give a query for which index or type, and all the settings can be implemented here, such as fuzzy query, scope query, prefix query.Searchrequestbuilder Responsebuilder = Client.preparesearch ("case"). Settypes ("Case_info");Two. Total number of statistical records SearchResponse response = Client.preparesearch ("case") . Settypes ("Case_info") . Setsearchtype (Searchtype.default)

First, the demandYou need to implement a field in the project to delete the document and delete a property of the specified field.Take document TEST/DOCUMENT/1 as an example:{ "_index":"Test", "_type":"Document", "_id":"1", "_score":1, "_source":{ "class":"Com.test.data", "ID":1, "Items":[{"class": "Com.test.data", "ID": 1 }], "lastupdated":"2016-07-22t11:26:56z", "ProcessInstance":{"class": "Com.test.data", "ID": 1 }, "Tians

To group queries by aggregation:　　SearchResponse response = Client.preparesearch (Index_douban). Settypes (Type_douban). Addaggregation (Aggregationbuilders.terms ("By_" +tag). Field (TAG). Size (1000)). Execute (). Actionget ();Terms Terms = Response.getaggregations (). Get ("By_" +tag);For (Bucket b:terms.getbuckets ()) {Sum sum = b.getaggregations (). Get ("sum");List.add (String) B.getkey ());System.out.println ("Filedname:" +b.getkey () + "Doccount:" +b.getdoccount ());}It is important to n

", "Carsource", "1"). //SetSource (Model2json ()). get ();//if (urequest.) {//System.out.println ("add Success");// } } Public Static voidsetmapping (client client) {Try{putmappingresponse response=client.admin (). Indices (). prepareputmapping ("Carsrc"). SetType ("Carsource"). SetSource (Xcontentfactory.jsonbuilder (). StartObject () . StartObject ("Car_name"). StartObject ("Cars"). Field ("Analyzer", "whitespace"). Field ("Type", "string"). EndObject (). EndObject (). Endobjec

Getquerybuilder (RequestType request, Boolquerybuilder Bq) {Getorderquerybuilder (request, BQ);Addpurchaseorderquerybuilder (request, BQ);}/*** Query conditions** @param request* @param BQ*/private void Getorderquerybuilder (RequestType request, Boolquerybuilder Bq) {Termquery exact match, no participle equals =Type.childtype Multilayer type nesting, specific index structure, reference mappingGET yourindexname/_mappingMapping:{"Yourindexname": {"Mappings": {"Type1": {"Properties": {"Childtype":

> Tim pf towns $ Tim c Lavin tim sg Td>wigins + Tim SF First, initialize the builder: Searchrequestbuilder Sbuilder = Client.preparesearch ("Player"). Settypes ("Player");The following example illustrates the implementation methods of various aggregation operations, because in the ES API, the aggregation operation on many

Original address: http://blog.csdn.net/u012116196/article/details/51754845 The Bulkprocessor class provides a simple interface for automatic flushing of bulk operations based on the number or size of requests, or at a given period. Using it, you first create a Bulkprocessor instance:[Java] View Plain copy importorg.elasticsearch.action.bulk.backoffpolicy; import org.elasticsearch.action.bulk.bulkprocessor; Importorg.elasticsearch.common.unit.bytesiz

The delete API allows you to delete JSON documents from a specified index by ID. There are two methods: ID-based data deletion and query-based data deletion. 1. Delete by ID The following example shows how to delete a document whose index name is Twitter, its type is tweet, and its ID is 1: DeleteResponse response = client.prepareDelete("twitter", "tweet", "1") .execute() .actionGet(); Ii. Delete through query The following example del