Indexing 在RavenDB中创建更多类似的内容
我的域中有以下文档:Indexing 在RavenDB中创建更多类似的内容,indexing,mapreduce,ravendb,morelikethis,Indexing,Mapreduce,Ravendb,Morelikethis,我的域中有以下文档: public class Article { public string Id { get; set; } // some other properties public IList<string> KeywordIds { get; set; } } public class Keyword { public string Id { get; set; } public string UrlName { get; se
public class Article {
public string Id { get; set; }
// some other properties
public IList<string> KeywordIds { get; set; }
}
public class Keyword {
public string Id { get; set; }
public string UrlName { get; set; }
public string Title { get; set; }
public string Tooltip { get; set; }
public string Description { get; set; }
}
公共类文章{
公共字符串Id{get;set;}
//其他一些属性
公共IList关键字ID{get;set;}
}
公共类关键字{
公共字符串Id{get;set;}
公共字符串UrlName{get;set;}
公共字符串标题{get;set;}
公共字符串工具提示{get;set;}
公共字符串说明{get;set;}
}
我有这样一个场景:
- 文章
有关键字A1
K1
- 文章
有关键字A2
K1
- 一个用户阅读文章
A1
- 我想建议用户阅读文章
A2
我知道我可以使用更像这个包的
,并且我阅读了文档,但我不知道如何做到这一点?你能帮我一下吗?看看这个例子,你可以用“类型”代替“关键字”:
使用系统;
使用System.Collections.Generic;
使用系统诊断;
使用System.Linq;
使用System.Linq.Expressions;
使用Lucene.Net.Analysis;
使用Raven.Abstractions.Data;
使用Raven.Abstractions.index;
使用Raven.Client;
使用Raven.Client.Bundles.MoreLikeThis;
使用Raven.Client.index;
使用Raven.Tests.Helpers;
使用Xunit;
名称空间RavenDBEval
{
公共类更像评估:RavenTestBase
{
私有只读IDocumentStore\u存储;
公共价值评估
{
_store=(IDocumentStore)NewDocumentStore();
_store.Initialize();
}
[事实]
public void应将两部电影与Amecast()匹配
{
字符串id;
使用(var session=\u store.OpenSession())
{
new MoviesByCastIndex().Execute(_store);
new MoviesByGenreIndex().Execute(_store);
GetGenreList().ForEach(session.Store);
var list=GetMovieList();
list.ForEach(session.Store);
session.SaveChanges();
id=session.Advanced.GetDocumentId(list.First());
WaitForIndexing(_存储);
}
使用(var session=\u store.OpenSession())
{
var moreLikeThisByCast=会话
.高级
.MoreLikeThis(新的MoreLikeThis查询
{
DocumentId=id,
Fields=new[]{“Cast”},
最小终端频率=1,
最小文档频率=2
});
var moreLikeThisByGenre=会话
.高级
.MoreLikeThis(新的MoreLikeThis查询
{
DocumentId=id,
字段=新[]{“类型”},
最小终端频率=1,
最小文档频率=2
});
foreach(Morelikethis Bycast中的var电影)
{
Debug.Print(“{0},Cast={1}”,movie.Title,string.Join(“,”,movie.Cast));
}
Assert.NotEmpty(更像是Bycast);
foreach(更像这一流派的电影)
{
Debug.Print(“{0}”,movie.Title);
foreach(电影中的var genreId.tyres)
{
var genre=session.Load(genreId);
Print(“\t\t{0}”,genre.Name);
}
}
Assert.NotEmpty(更像是按体裁);
}
}
私有静态列表GetGenreList()
{
返回新列表
{
新类型{Id=“genres/1”,Name=“喜剧”},
新类型{Id=“genres/2”,Name=“戏剧”},
新类型{Id=“genres/3”,Name=“Action”},
新类型{Id=“genres/4”,Name=“Sci Fi”},
};
}
私有静态列表GetMovieList()
{
返回新列表
{
新电影
{
Title=“星球大战第四集:新希望”,
流派=新[]{“流派/3”、“流派/4”},
铸造=新[]
{
“马克·哈米尔”,
“哈里森·福特”,
“嘉莉·费舍尔”
}
},
新电影
{
Title=“星球大战第五集:帝国反击”,
流派=新[]{“流派/3”、“流派/4”},
铸造=新[]
{
“马克·哈米尔”,
“哈里森·福特”,
“嘉莉·费舍尔”
}
},
新电影
{
Title=“一些假电影”,
流派=新[]{“流派/2”},
铸造=新[]
{
“詹姆斯·佛朗哥”,
“刺痛”,
“嘉莉·费舍尔”
}
},
新电影
{
Title=“对话”,
流派=新[]
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Linq.Expressions;
using Lucene.Net.Analysis;
using Raven.Abstractions.Data;
using Raven.Abstractions.Indexing;
using Raven.Client;
using Raven.Client.Bundles.MoreLikeThis;
using Raven.Client.Indexes;
using Raven.Tests.Helpers;
using Xunit;
namespace RavenDBEval
{
public class MoreLikeThisEvaluation : RavenTestBase
{
private readonly IDocumentStore _store;
public MoreLikeThisEvaluation()
{
_store = (IDocumentStore)NewDocumentStore();
_store.Initialize();
}
[Fact]
public void ShouldMatchTwoMoviesWithSameCast()
{
string id;
using (var session = _store.OpenSession())
{
new MoviesByCastIndex().Execute(_store);
new MoviesByGenreIndex().Execute(_store);
GetGenreList().ForEach(session.Store);
var list = GetMovieList();
list.ForEach(session.Store);
session.SaveChanges();
id = session.Advanced.GetDocumentId(list.First());
WaitForIndexing(_store);
}
using (var session = _store.OpenSession())
{
var moreLikeThisByCast = session
.Advanced
.MoreLikeThis<Movie, MoviesByCastIndex>(new MoreLikeThisQuery
{
DocumentId = id,
Fields = new[] { "Cast" },
MinimumTermFrequency = 1,
MinimumDocumentFrequency = 2
});
var moreLikeThisByGenre = session
.Advanced
.MoreLikeThis<Movie, MoviesByGenreIndex>(new MoreLikeThisQuery
{
DocumentId = id,
Fields = new[] { "Genres" },
MinimumTermFrequency = 1,
MinimumDocumentFrequency = 2
});
foreach (var movie in moreLikeThisByCast)
{
Debug.Print("{0}, Cast={1}", movie.Title, string.Join(",", movie.Cast));
}
Assert.NotEmpty(moreLikeThisByCast);
foreach (var movie in moreLikeThisByGenre)
{
Debug.Print("{0}", movie.Title);
foreach (var genreId in movie.Genres)
{
var genre = session.Load<Genre>(genreId);
Debug.Print("\t\t{0}", genre.Name);
}
}
Assert.NotEmpty(moreLikeThisByGenre);
}
}
private static List<Genre> GetGenreList()
{
return new List<Genre>
{
new Genre {Id = "genres/1", Name = "Comedy"},
new Genre {Id = "genres/2", Name = "Drama"},
new Genre {Id = "genres/3", Name = "Action"},
new Genre {Id = "genres/4", Name = "Sci Fi"},
};
}
private static List<Movie> GetMovieList()
{
return new List<Movie>
{
new Movie
{
Title = "Star Wars Episode IV: A New Hope",
Genres = new[] {"genres/3", "genres/4"},
Cast = new[]
{
"Mark Hamill",
"Harrison Ford",
"Carrie Fisher"
}
},
new Movie
{
Title = "Star Wars Episode V: The Empire Strikes Back",
Genres = new[] {"genres/3", "genres/4"},
Cast = new[]
{
"Mark Hamill",
"Harrison Ford",
"Carrie Fisher"
}
},
new Movie
{
Title = "Some Fake Movie",
Genres = new[] {"genres/2"},
Cast = new[]
{
"James Franco",
"Sting",
"Carrie Fisher"
}
},
new Movie
{
Title = "The Conversation",
Genres = new[] {"genres/2"},
Cast =
new[]
{
"Gene Hackman",
"John Cazale",
"Allen Garfield",
"Harrison Ford"
}
},
new Movie
{
Title = "Animal House",
Genres = new[] {"genres/1"},
Cast = new[]
{
"John Belushi",
"Karen Allen",
"Tom Hulce"
}
},
new Movie
{
Title="Superman",
Genres = new[] {"genres/3", "genres/4"},
Cast= new[]
{
"Christopher Reeve",
"Margot Kidder",
"Gene Hackman",
"Glen Ford"
}
}
};
}
}
public class Movie
{
public string Id { get; set; }
public string Title { get; set; }
public string[] Cast { get; set; }
public string[] Genres { get; set; }
}
public class Genre
{
public string Id { get; set; }
public string Name { get; set; }
}
public class MoviesByGenreIndex : AbstractIndexCreationTask<Movie>
{
public MoviesByGenreIndex()
{
Map = docs => from doc in docs
select new { doc.Genres };
Analyzers = new Dictionary<Expression<Func<Movie, object>>, string>
{
{
x => x.Genres,
typeof (KeywordAnalyzer).FullName
}
};
Stores = new Dictionary<Expression<Func<Movie, object>>, FieldStorage>
{
{
x => x.Genres, FieldStorage.Yes
}
};
}
}
public class MoviesByCastIndex : AbstractIndexCreationTask<Movie>
{
public MoviesByCastIndex()
{
Map = docs => from doc in docs
select new { doc.Cast };
Analyzers = new Dictionary<Expression<Func<Movie, object>>, string>
{
{
x => x.Cast,
typeof (KeywordAnalyzer).FullName
}
};
Stores = new Dictionary<Expression<Func<Movie, object>>, FieldStorage>
{
{
x => x.Cast, FieldStorage.Yes
}
};
}
}
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="Lucene.Net" version="3.0.3" targetFramework="net40" />
<package id="Lucene.Net.Contrib" version="3.0.3" targetFramework="net40" />
<package id="RavenDB.Client" version="2.0.2261" targetFramework="net40" />
<package id="RavenDB.Database" version="2.0.2261" targetFramework="net40" />
<package id="RavenDB.Embedded" version="2.0.2261" targetFramework="net40" />
<package id="RavenDB.Tests.Helpers" version="2.0.2261" targetFramework="net40" />
<package id="SharpZipLib" version="0.86.0" targetFramework="net40" />
<package id="xunit" version="1.9.1" targetFramework="net40" />
</packages>