http://blog.csdn.net/changong28/article/details/38445805#comments

3.1 集群的连接

3.1.1 作为Elasticsearch节点

import static org.elasticsearch.node.NodeBuilder.nodeBuilder;

import org.elasticsearch.client.Client;

import org.elasticsearch.node.Node;

Node node = nodeBuilder().clusterName("escluster2").client(true).

node();

Client client = node.client();

3.1.2 使用Transport连接

import org.elasticsearch.client.transport.TransportClient;

import org.elasticsearch.common.settings.ImmutableSettings;

import org.elasticsearch.common.settings.Settings;

import org.elasticsearch.common.transport.InetSocketTransportAddress;

Settings settings = ImmutableSettings.settingsBuilder().put("cluster.name", "escluster2").build();

TransportClient client = new TransportClient(settings);

client.addTransportAddress(new InetSocketTransportAddress("127.0.0.1",9300));

3.2 文档的CRUD

3.2.1 查询文档

GetResponse response = client.prepareGet("library", "book", "1")

.setFields("title", "_source")

.execute().actionGet();

3.2.2 索引文档

import org.elasticsearch.action.index.IndexResponse;

import org.elasticsearch.client.Client;

IndexResponse response = client.prepareIndex("library", "book", "2")

.setSource("{ \"title\": \"Mastering ElasticSearch\"}")

.execute().actionGet();

3.2.3 更新文档

import org.elasticsearch.action.update.UpdateResponse;

import org.elasticsearch.client.Client;

import java.util.Map;

import org.elasticsearch.common.collect.Maps;

Map<String, Object> params = Maps.newHashMap();

params.put("ntitle", "ElasticSearch Server Book");

UpdateResponse response = client.prepareUpdate("library", "book", "2")

.setScript("ctx._source.title = ntitle")

.setScriptParams(params)

.execute().actionGet();

3.2.4 删除文档

import org.elasticsearch.action.delete.DeleteResponse;

import org.elasticsearch.client.Client;

DeleteResponse response = client.prepareDelete("library", "book", "2")

.execute().actionGet();

3.3 Elasticsearch检索

3.3.1 Preparing a query

import org.elasticsearch.action.search.SearchResponse;

import org.elasticsearch.client.Client;

import org.elasticsearch.search.SearchHit;

SearchResponse response = client.prepareSearch("library")

.addFields("title", "_source")

.execute().actionGet();

for(SearchHit hit: response.getHits().getHits()) {

<span style="white-space:pre">    </span>System.out.println(hit.getId());

<span style="white-space:pre">    </span>if (hit.getFields().containsKey("title")) {

<span style="white-space:pre">        </span>System.out.println("field.title: "+ hit.getFields().get("title").getValue());

<span style="white-space:pre">    </span>}

<span style="white-space:pre">    </span>System.out.println("source.title: " + hit.getSource().get("title"));

}

3.3.2 Building queries

import org.elasticsearch.index.query.QueryBuilder;

import org.elasticsearch.index.query.QueryBuilders;

QueryBuilder queryBuilder = QueryBuilders

.disMaxQuery()

.add(QueryBuilders.termQuery("title", "Elastic"))

.add(QueryBuilders.prefixQuery("title", "el"));

System.out.println(queryBuilder.toString());

SearchResponse response = client.prepareSearch("library")

.setQuery(queryBuilder)

.execute().actionGet();

3.3.3 Using the match all documents query

queryBuilder = QueryBuilders.matchAllQuery()

.boost(11f).normsField("title");

3.3.4 The match query

queryBuilder = QueryBuilders

.matchQuery("message", "a quick brown fox")

.operator(Operator.AND)

.zeroTermsQuery(ZeroTermsQuery.ALL);

3.3.5 Using the geo shape query

queryBuilder = QueryBuilders.geoShapeQuery("location",

ShapeBuilder.newRectangle()

.topLeft(13, 53)

.bottomRight(14, 52)

.build());

3.3.6 Paging query

SearchResponse response = client.prepareSearch("library")

.setQuery(QueryBuilders.matchAllQuery())

.setFrom(10)

.setSize(20)

.execute().actionGet();

3.3.7 Sorting

SearchResponse response = client.prepareSearch("library")

.setQuery(QueryBuilders.matchAllQuery())

.addSort(SortBuilders.fieldSort("title"))

.addSort("_score", SortOrder.DESC)

.execute().actionGet()

3.3.8 Filtering

FilterBuilder filterBuilder = FilterBuilders

.andFilter(

FilterBuilders.existsFilter("title").filterName("exist"),

FilterBuilders.termFilter("title", "elastic")

);

SearchResponse response = client.prepareSearch("library")

.setFilter(filterBuilder)

.execute().actionGet();

3.3.9 Faceting

FacetBuilder facetBuilder = FacetBuilders

.filterFacet("test")

.filter(FilterBuilders.termFilter("title", "elastic"));

SearchResponse response = client.prepareSearch("library")

.addFacet(facetBuilder)

.execute().actionGet();

3.3.10 Highlighting

SearchResponse response = client.prepareSearch("wikipedia")

.addHighlightedField("title")

.setQuery(QueryBuilders.termQuery("title", "actress"))

.setHighlighterPreTags("<1>", "<2>")

.setHighlighterPostTags("</1>", "</2>")

.execute().actionGet();

for(SearchHit hit: response.getHits().getHits()) {

<span style="white-space:pre">    </span>HighlightField hField = hit.getHighlightFields().get("title");

<span style="white-space:pre">    </span>for (Text t : hField.fragments()) {

<span style="white-space:pre">        </span>System.out.println(t.string());

<span style="white-space:pre">    </span>}

}

3.3.11 Suggestions

SearchResponse response = client.prepareSearch("wikipedia")

.setQuery(QueryBuilders.matchAllQuery())

.addSuggestion(new TermSuggestionBuilder("first_suggestion")

.text("graphics designer")

.field("_all"))

.execute().actionGet();

for( Entry<? extends Option> entry : response.getSuggest().getSuggestion("first_suggestion").getEntries()) {

<span style="white-space:pre">    </span>System.out.println("Check for: " + entry.getText() + ". Options:");

<span style="white-space:pre">    </span>for( Option option : entry.getOptions()) {

<span style="white-space:pre">        </span>System.out.println("\t" + option.getText());

<span style="white-space:pre">    </span>}

}

3.3.12 Counting

CountResponse response = client.prepareCount("library")

.setQuery(QueryBuilders.termQuery("title", "elastic"))

.execute().actionGet();

3.3.13 Scrolling

SearchResponse responseSearch = client.prepareSearch("library")

.setScroll("1m")

.setSearchType(SearchType.SCAN)

.execute().actionGet();

String scrollId = responseSearch.getScrollId();

SearchResponse response = client.prepareSearchScroll(scrollId).execute().actionGet();

3.3.14 Bulk

BulkResponse response = client.prepareBulk()

.add(client.prepareIndex("library", "book", "5")

.setSource("{ \"title\" : \"Solr Cookbook\"}")

.request())

.add(client.prepareDelete("library", "book", "2").request()).execute().actionGet();

3.3.15 The delete by query

DeleteByQueryResponse response = client.prepareDeleteByQuery("library")

.setQuery(QueryBuilders.termQuery("title", "ElasticSearch"))

.execute().actionGet();

3.3.16 Multi GET

MultiGetResponse response = client.prepareMultiGet()

.add("library", "book", "1", "2")

.execute().actionGet();

3.3.16 Multi Search

MultiSearchResponse response = client.prepareMultiSearch()

.add(client.prepareSearch("library", "book").request())

.add(client.prepareSearch("news").

.setFilter(FilterBuilders.termFilter("tags", "important")))

.execute().actionGet();

3.3.17 Building JSON queries and documents

IndexResponse response = client

.prepareIndex("library", "book", "2")

.setSource("{ \"title\": \"Mastering ElasticSearch\"}")

.execute().actionGet();

Map<String, Object> m = Maps.newHashMap();

m.put("1", "Introduction");

m.put("2", "Basics");

m.put("3", "And the rest");

XContentBuilder json = XContentFactory.jsonBuilder().prettyPrint()

.startObject()

.field("id").value("2123")

.field("lastCommentTime", new Date())

.nullField("published")

.field("chapters").map(m)

.field("title", "Mastering ElasticSearch")

.array("tags", "search", "ElasticSearch", "nosql")

.field("values")

.startArray()

.value(1)

.value(10)

.endArray()

.endObject();

3.4 The administration API

3.4.1 The cluster administration API

3.4.1.1 The cluster and indices health API

ClusterHealthResponse response = client.admin().cluster()

.prepareHealth("library")

.execute().actionGet();

3.4.1.2 The cluster state API

ClusterStateResponse response = client.admin().cluster()

.prepareState()

.execute().actionGet();

3.4.1.3 The update settings API

Map<String, Object> map = Maps.newHashMap();

map.put("indices.ttl.interval", "10m");

ClusterUpdateSettingsResponse response = client.admin().cluster()

.prepareUpdateSettings()

.setTransientSettings(map)

.execute().actionGet();

3.4.1.4 The reroute API

ClusterRerouteResponse response = client.admin().cluster()

.prepareReroute()

.setDryRun(true)

.add(new MoveAllocationCommand(new ShardId("library", 3), "G3czOt4HQbKZT1RhpPCULw",PvHtEMuRSJ6rLJ27AW3U6w"),

     new CancelAllocationCommand(new ShardId("library", 2), "G3czOt4HQbKZT1RhpPCULw",rue))

.execute().actionGet();

3.4.1.5 The nodes information API

NodesInfoResponse response = client.admin().cluster()

.prepareNodesInfo()

.setNetwork(true)

.setPlugin(true)

.execute().actionGet();

3.4.1.6 The node statistics API

NodesStatsResponse response = client.admin().cluster()

.prepareNodesStats()

.all()

.execute().actionGet();

3.4.1.7 The nodes hot threads API

NodesHotThreadsResponse response = client.admin().cluster()

.prepareNodesHotThreads()

.execute().actionGet();

3.4.1.8 The nodes shutdown API

NodesShutdownResponse response = client.admin().cluster()

.prepareNodesShutdown()

.execute().actionGet();

3.4.1.9 The search shards API

ClusterSearchShardsResponse response = client.admin().cluster()

.prepareSearchShards()

.setIndices("library")

.setRouting("12")

.execute().actionGet();

3.4.2 The Indices administration API

3.4.2.1 The index existence API

IndicesExistsResponse response = client.admin().indices()

.prepareExists("books", "library")

.execute().actionGet();

3.4.2.2 The Type existence API

TypesExistsResponse response = client.admin().indices()

.prepareTypesExists("library")

.setTypes("book")

.execute().actionGet();

3.4.2.3 The indices stats API

IndicesStatsResponse response = client.admin().indices()

.prepareStats("library")

.all()

.execute().actionGet();

3.4.2.4 Index status

IndicesStatusResponse response = client.admin().indices()

.prepareStatus("library")

.setRecovery(true)

.setSnapshot(true)

.execute().actionGet();

3.4.2.5 Segments information API

IndicesSegmentResponse response = client.admin().indices()

.prepareSegments("library")

.execute().actionGet();

3.4.2.6 Creating an index API

CreateIndexResponse response = client.admin().indices()

.prepareCreate("news")

.setSettings(ImmutableSettings.settingsBuilder()

.put("number_of_shards", 1))

.addMapping("news", XContentFactory.jsonBuilder()

.startObject()

.startObject("news")

.startObject("properties")

.startObject("title")

.field("analyzer", "whitespace")

.field("type", "string")

.endObject()

.endObject()

.endObject()

.endObject())

.execute().actionGet();

3.4.2.7 Deleting an index

DeleteIndexResponse response = client.admin().indices()

.prepareDelete("news")

.execute().actionGet();

3.4.2.8 Closing an index

CloseIndexResponse response = client.admin().indices()

.prepareClose("library")

.execute().actionGet();

3.4.2.9 Opening an index

OpenIndexResponse response = client.admin().indices()

.prepareOpen("library")

.execute().actionGet();

3.4.2.10 The Refresh API

RefreshResponse response = client.admin().indices()

.prepareRefresh("library")

.execute().actionGet();

3.4.2.11 The Flush API

FlushResponse response = client.admin().indices()

.prepareFlush("library")

.setFull(false)

.execute().actionGet();

3.4.2.12 The Optimize API

OptimizeResponse response = client.admin().indices()

.prepareOptimize("library")

.setMaxNumSegments(2)

.setFlush(true)

.setOnlyExpungeDeletes(false)

.execute().actionGet();

3.4.2.13 The put mapping API

PutMappingResponse response = client.admin().indices()

.preparePutMapping("news")

.setType("news")

.setSource(XContentFactory.jsonBuilder()

.startObject()

.startObject("news")

.startObject("properties")

.startObject("title")

.field("analyzer", "whitespace")

.field("type", "string")

.endObject()

.endObject()

.endObject()

.endObject())

.execute().actionGet();

3.4.2.14 The delete mapping API

DeleteMappingResponse response = client.admin().indices()

.prepareDeleteMapping("news")

.setType("news")

.execute().actionGet();

3.4.2.15 The gateway snapshot API

GatewaySnapshotResponse response = client.admin().indices()

.prepareGatewaySnapshot("news")

.execute().actionGet();

3.4.2.16 The aliases API

IndicesAliasesResponse response = client.admin().indices()

.prepareAliases()

.addAlias("news", "n")

.addAlias("library", "elastic_books",

FilterBuilders.termFilter("title", "elasticsearch"))

.removeAlias("news", "current_news")

.execute().actionGet();

3.4.2.17 The get aliases API

IndicesGetAliasesResponse response = client.admin().indices()

.prepareGetAliases("elastic_books", "n")

.execute().actionGet();

3.4.2.18 The aliases exists API

AliasesExistResponse response = client.admin().indices()

.prepareAliasesExist("elastic*", "unknown")

.execute().actionGet();

3.4.2.19 The clear cache API

ClearIndicesCacheResponse response = client.admin().indices()

.prepareClearCache("library")

.setFieldDataCache(true)

.setFields("title")

.setFilterCache(true)

.setIdCache(true)

.execute().actionGet();

3.4.2.20 The update settings API

UpdateSettingsResponse response = client.admin().indices()

.prepareUpdateSettings("library")

.setSettings(ImmutableSettings.builder()

.put("index.number_of_replicas", 2))

.execute().actionGet();

3.4.2.21 The analyze API

AnalyzeResponse response = client.admin().indices()

.prepareAnalyze("library", "ElasticSearch Servers")

.setTokenizer("whitespace")

.setTokenFilters("nGram")

.execute().actionGet();

3.4.2.22 The put template API

PutIndexTemplateResponse response = client.admin().indices()

.preparePutTemplate("my_template")

.setTemplate("product*")

.setSettings(ImmutableSettings.builder()

.put("index.number_of_replicas", 2)

.put("index.number_of_shards", 1))

.addMapping("item", XContentFactory.jsonBuilder()

.startObject()

.startObject("item")

.startObject("properties")

.startObject("title")

.field("type", "string")

.endObject()

.endObject()

.endObject()

.endObject())

.execute().actionGet();

3.4.2.23 The delete template API

DeleteIndexTemplateResponse response = client.admin().indices()

.prepareDeleteTemplate("my_*")

.execute().actionGet();

3.4.2.24 The validate query API

ValidateQueryResponse response = client.admin().indices()

.prepareValidateQuery("library")

.setExplain(true)

.setQuery(XContentFactory.jsonBuilder()

.startObject()

.field("name").value("elastic search")

.endObject().bytes())

.execute().actionGet();

3.4.2.25 The put warmer API

PutWarmerResponse response = client.admin().indices()

.preparePutWarmer("library_warmer")

.setSearchRequest(client.prepareSearch("library")

.addFacet(FacetBuilders

.termsFacet("tags").field("tags")))

.execute().actionGet();

3.4.2.26 The delete warmer API

DeleteWarmerResponse response = client.admin().indices()

.prepareDeleteWarmer()

.setName("library_*")

.execute().actionGet();

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[转]Elasticsearch Java API总汇

3.1 集群的连接

3.1.1 作为Elasticsearch节点

3.1.2 使用Transport连接

3.2 文档的CRUD

3.2.1 查询文档

3.2.2 索引文档

3.2.3 更新文档

3.2.4 删除文档

3.3 Elasticsearch检索

3.3.1 Preparing a query

3.3.2 Building queries

3.3.3 Using the match all documents query

3.3.4 The match query

3.3.5 Using the geo shape query

3.3.6 Paging query

3.3.7 Sorting

3.3.8 Filtering

3.3.9 Faceting

3.3.10 Highlighting

3.3.11 Suggestions

3.3.12 Counting

3.3.13 Scrolling

3.3.14 Bulk

3.3.15 The delete by query

3.3.16 Multi GET

3.3.16 Multi Search

3.3.17 Building JSON queries and documents

3.4 The administration API

3.4.1 The cluster administration API

3.4.1.1 The cluster and indices health API

3.4.1.2 The cluster state API

3.4.1.3 The update settings API

3.4.1.4 The reroute API

3.4.1.5 The nodes information API

3.4.1.6 The node statistics API

3.4.1.7 The nodes hot threads API

3.4.1.8 The nodes shutdown API

3.4.1.9 The search shards API

3.4.2 The Indices administration API

3.4.2.1 The index existence API

3.4.2.2 The Type existence API

3.4.2.3 The indices stats API

3.4.2.4 Index status

3.4.2.5 Segments information API

3.4.2.7 Deleting an index

3.4.2.8 Closing an index

3.4.2.9 Opening an index

3.4.2.10 The Refresh API

3.4.2.11 The Flush API

3.4.2.12 The Optimize API

3.4.2.13 The put mapping API

3.4.2.14 The delete mapping API

3.4.2.15 The gateway snapshot API

3.4.2.16 The aliases API

3.4.2.17 The get aliases API

3.4.2.18 The aliases exists API

3.4.2.19 The clear cache API

3.4.2.20 The update settings API

3.4.2.21 The analyze API

3.4.2.22 The put template API

3.4.2.23 The delete template API

3.4.2.24 The validate query API

3.4.2.25 The put warmer API

3.4.2.26 The delete warmer API

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