您可以MinimumShouldMatch
在TermsDescriptor
. 这是一个例子:
var lookingFor = new List<string> { "netherlands", "poland" };
var searchResponse = client.Search<IndexElement>(s => s
.Query(q => q
.TermsDescriptor(t => t.OnField(f => f.Countries).MinimumShouldMatch("100%").Terms(lookingFor))));
或者
var lookingFor = new List<string> { "netherlands", "poland" };
var searchResponse = client.Search<IndexElement>(s => s
.Query(q => q
.TermsDescriptor(t => t.OnField(f => f.Countries).MinimumShouldMatch(lookingFor.Count).Terms(lookingFor))));
这是整个例子
class Program
{
public class IndexElement
{
public int Id { get; set; }
[ElasticProperty(Index = FieldIndexOption.NotAnalyzed)]
public List<string> Countries { get; set; }
}
static void Main(string[] args)
{
var indexName = "sampleindex";
var uri = new Uri("http://localhost:9200");
var settings = new ConnectionSettings(uri).SetDefaultIndex(indexName).EnableTrace(true);
var client = new ElasticClient(settings);
client.DeleteIndex(indexName);
client.CreateIndex(
descriptor =>
descriptor.Index(indexName)
.AddMapping<IndexElement>(
m => m.MapFromAttributes()));
client.Index(new IndexElement {Id = 1, Countries = new List<string> {"poland", "germany", "france"}});
client.Index(new IndexElement {Id = 2, Countries = new List<string> {"poland", "france"}});
client.Index(new IndexElement {Id = 3, Countries = new List<string> {"netherlands"}});
client.Refresh();
var lookingFor = new List<string> { "germany" };
var searchResponse = client.Search<IndexElement>(s => s
.Query(q => q
.TermsDescriptor(t => t.OnField(f => f.Countries).MinimumShouldMatch("100%").Terms(lookingFor))));
}
}
关于你的问题
- 对于术语:“荷兰”,您将获得 ID 为 3 的文件
- 对于术语:“波兰”和“法国”,您将获得 ID 为 1 和 2 的文件
- 对于术语:“德国”,您将获得 ID 为 1 的文档
- 对于术语:“波兰”、“法国”和“德国”,您将获得 ID 为 1 的文件
我希望这是你的观点。