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    @gojob/ts-elasticsearch
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    1.3.3 • Public • Published

    @gojob/ts-elasticsearch

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    Description

    The purpose of this library is to provide a decorated class approch to use the elasticsearch module.

    Installation

    yarn add @gojob/ts-elasticsearch
    

    Usage example

    import { Field, Elasticsearch, Primary } from '@gojob/ts-elasticsearch';
    
    @Index()
    class User {
      @Primary()
      @Field({ enabled: false})
      id: string;
    
      @Field('text') name: string;
      @Field('integer') age: number;
    }
    
    // ...
    
    const elasticsearch = new Elasticsearch({ host: 'http://192.168.99.100:9200' });
    
    await elasticsearch.indices.create(User);
    await elasticsearch.indices.putMapping(User);
    
    const user = new User();
    user.id = 'agent-1122';
    user.name = 'Smith';
    user.age = 33;
    
    await elasticsearch.index(user);
    
    await elasticsearch.indices.refresh(User);
    
    const { documents } = elasticsearch.search(User, { body: { query: { match_all: {} } } });
    

    Documentation

    Decorators

    decorator @Index

    Keep in mind that index types are scheduled to be removed in Elasticsearch 8.

    This class decorator factory declares a new Elasticsearch index.

    By default, it uses the class name as index (and type), but it can be overwritten.

    Index settings may be added in the settings optional parameter.

    @Index({index: 'twt', settings: { number_of_shards: 3 } })
    class Tweeter {}

    decorator @Primary

    This property decorator factory declares the class primary key which will be used as _id in Elasticsearch index. When not provided, Elasticsearch generates ids by it own.

    @Index()
    class User {
      @Primary()
      @Field({ enabled: false})
      id: string;
    
      @Field('text') name: string;
      @Field('integer') age: number;
    }

    decorator @Field

    This property decorator factory declares a new property in the current class.

    It takes either a simple type as string or an elasticsearch mapping setting.

    @Index()
    class User {
      @Field('keyword') id: string;
      @Field({ type: 'text', boost: 2 })name: string;
      @Field('integer') age: number;
    }
    Special case of object or nested (array of object)

    When dealing with object or nested, you have to declare a class with some fields declared. Notice in this case, the class in not decorated with @Index.

    Object example:

    class Country {
      @Field('text') name: string;
    }
    
    @Index()
    class City {
      @Field('text') name: string;
      @Field({ object: Country })
      country: Country;
    }

    Nested example:

    class Follower {
      @Field({ enabled: false}) name: string;
      @Field({ enabled: false}) popularity: number;
    }
    
    @Index()
    class User {
      @Primary()
      @Field({ enabled: false})
      id: string;
    
      @Field('text') name: string;
    
      @Field({ nested: Follower })
      followers: Follower[];
    }

    Elasticsearch class

    This class provides main elasticsearch features directly usable with indexed classes.

    The purpose of this library is not to override all official plugin features, but only those that are relevant for managing documents using classes.

    When dealing with documents, you can either uses indexed class instances or literal object associated to their indexed class.

    The examples presents in this chapter are based on this setup.

    import { Field, Elasticsearch, Primary } from '@gojob/ts-elasticsearch';
    
    const elasticsearch = new Elasticsearch({ host: 'http://192.168.99.100:9200' });
    
    @Index()
    class User {
      @Primary()
      @Field({ enabled: false})
      id: string;
    
      @Field('text') name: string;
      @Field('integer') age: number;
    }

    Elasticsearch core

    Instanciate this class with an IConfigOptions or an official elasticsearch.Client instance.

    IConfigOptions

    IConfigOptions extends the official client configuration option.

    Extended options provided by IConfigOptions:

    Name Type Optional Description
    client elasticsearch.Client X Official client instance to use
    indexPrefix string X Prefix to set to all indices

    Core functions

    The main class provides the main part of the document API functions.

    • bulkIndex: Index an arary or a stream of documents (bulk api
    • count: Count documents in the index (count api)
    • create: Add a new document to the index create api)
    • delete: Delete a document from the index delete api)
    • get: Retrieve a document by its id get api)
    • getIndices: Return all Indexed classes
    • index: Add or update a document in the index index api)
    • search: Search documents in the index search api)
    • update: Update a document update api)

    Elasticsearch.indices

    The indices provides the main part of the document API functions.

    Install

    npm i @gojob/ts-elasticsearch

    DownloadsWeekly Downloads

    130

    Version

    1.3.3

    License

    MIT

    Unpacked Size

    323 kB

    Total Files

    85

    Last publish

    Collaborators

    • martin.lehoux
    • jfumardgojob
    • ericchaps
    • fcarlue
    • alexian-serrano
    • remi-bruguier
    • davidolivier1337
    • miramo
    • typedef