ElasticSearch Java api 详解_V1.0

import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.search.SearchType;
import org.elasticsearch.index.query.FilterBuilders.*;
import org.elasticsearch.index.query.QueryBuilders.*;

SearchResponse response = client.prepareSearch("index1", "index2")
         //设置要查询的索引(index)
        .setTypes("type1", "type2")
         //设置type, 这个在建立索引的时候同时设置了, 或者可以使用head工具查看
        .setSearchType(SearchType.DFS_QUERY_THEN_FETCH)
        .setQuery(QueryBuilders.termQuery("multi", "test"))             
        // Query 查询之一. 对于QueryBuilders接下来会解释. 在这里"multi"是要查询的field,"test"是要查询的内容
        .setFilter(FilterBuilders.rangeFilter("age").from(12).to(18))   
        // Filter 查询之二, FilterBuilders接下来会解释. 在这里"age"是要查询的field, 后面的数字是查询的条件范围
        .setFrom(0).setSize(60).setExplain(true)
        //0-60 表示显示数量
        .execute()
        .actionGet();

// MatchAll on the whole cluster with all default options
SearchResponse response = client.prepareSearch().execute().actionGet();

import org.elasticsearch.index.query.QueryBuilders.*;

QueryBuilder qb = QueryBuilders.matchQuery("name", "kimchy elasticsearch");
//name是field,kimchy elasticsearch是要查询的字符串

QueryBuilder qb = QueryBuilders.multiMatchQuery(
    "kimchy elasticsearch",     // Text you are looking for
     //kimchy elasticsearch是要查询的字符串
    "user", "message"           // Fields you query on
     //user 和 message都是field
    );

QueryBuilder qb = QueryBuilders
                    .boolQuery()
                    .must(termQuery("content", "test1"))
                    .must(termQuery("content", "test4"))
                    .mustNot(termQuery("content", "test2"))
                    .should(termQuery("content", "test3"));
//content为field,test为查询内容.
//其中must表示必须满足,mustNot表示必须不满足,should表示可有可无

QueryBuilders.idsQuery().ids("1", "2");
//通过id来查询

QueryBuilders.fieldQuery("name", "+kimchy -dadoonet");

// Note that you can write the same query using queryString query.
QueryBuilders.queryString("+kimchy -dadoonet").field("name");
//+表示必须有的 -表示一定没有的

QueryBuilder qb = QueryBuilders.fuzzyQuery("name", "kimzhy");
//根据提供的字符串作为前缀进行查询

QueryBuilder qb = QueryBuilders.matchAllQuery();
//显示所有的记录

QueryBuilders.prefixQuery("brand", "heine");
//brand是field, heine是前缀查询字符串

QueryBuilder qb = QueryBuilders.queryString("+kimchy -elasticsearch");

QueryBuilder qb = QueryBuilders
                    .rangeQuery("price")
                    .from(5)
                    .to(10)
                    .includeLower(true)
                    .includeUpper(false);
//price是field, 数字代表范围.除了from to还有lt gt等等...

QueryBuilders.spanFirstQuery(
                QueryBuilders.spanTermQuery("user", "kimchy"),  // Query
                3                                               // Max End position
        );
//只匹配在Field开头出现的, 数字表示从开头起的几个单词内查询, 则此查询意思是:user中的开头3个单词内,kimchy是否能查询到


// Span Near
QueryBuilders.spanNearQuery()
    .clause(QueryBuilders.spanTermQuery("field","value1"))  // Span Term Queries
    .clause(QueryBuilders.spanTermQuery("field","value2"))
    .clause(QueryBuilders.spanTermQuery("field","value3"))
    .slop(12)                                               // Slop factor
    .inOrder(false)
    .collectPayloads(false);
//匹配距离相近的, inOrder表示:true表示按照value1/2/3的顺序来计算距离(两个单词中间夹一个单词 距离为1). 举例: a b c d.  {a,b,c}中a,c的距离为1.
//则此查询的意思是:在field中,如果value1/2/3的距离是在12以内的,那么可以查询到.反之不能.


// Span Not
QueryBuilders.spanNotQuery()
    .include(QueryBuilders.spanTermQuery("field","value1"))
    .exclude(QueryBuilders.spanTermQuery("field","value2"));
//匹配不重叠的,即除那些两个SpanQuery相互重叠的结果
//例如有两个Document：”the quick brown fox jump over a lazy dog”和”the quick red fox jumps over the sleepy cat”
//SpanNearQuery quick_fox =new SpanNearQuery(new SpanQuery[]{quick, fox}, 1, true);  //基础的SpanQuery，默认匹配2个Document
//匹配的这两个结果的中间重叠部分为：red/brown
//SpanNotQuery quick_fox_dog = new SpanNotQuery(quick_fox, dog);//因为dog不是red或者brown，所以仍为两个
//SpanNotQuery no_quick_red_fox =      new SpanNotQuery(quick_fox, red);   //现在只剩下brown那个doc了
//这种Query经常用于连接的时候。

// Span Or
QueryBuilders.spanOrQuery()
    .clause(QueryBuilders.spanTermQuery("field","value1"))
    .clause(QueryBuilders.spanTermQuery("field","value2"))
    .clause(QueryBuilders.spanTermQuery("field","value3"));
//SpanQuery的合集


// Span Term
QueryBuilders.spanTermQuery("user","kimchy");


//该部分详见:http://www.coder4.com/archives/774