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PGroonga.EntityFrameworkCore

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3.1.0

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Pgroonga.entityframeworkcore

Extensão pgroonga para npgsql.entityframeworkcore.postgresql (provedor principal do PostgreSQL / NPGSQL Entity Framework). Ele permite a capacidade de fazer pesquisa completa de texto, especialmente chinesa, japonesa e assim por diante, com o EntityFramework Core, PostgreSQL e Groonga.

PostGresql pgroonga

Atenção

EF.Functions.Pgroonga* funciona apenas com Npgsql.EntityFrameworkCore.PostgreSQL > = 2.2.6 e> = 3.0.1 devido a aspnet/entityframeworkcore#13454.

Uso

 public class ApplicationDbContext : DbContext
{
    // ...

    protected override void OnModelCreating ( ModelBuilder modelBuilder )
    {
        base . OnModelCreating ( modelBuilder ) ;

        // ...

        modelBuilder . Entity < Post > ( )
            . HasIndex ( g => g . Content )
            . HasMethod ( "pgroonga" )
            . HasOperators ( "pgroonga_varchar_full_text_search_ops_v2" ) ;

    }
}

public class Startup
{
    // ...

    public void ConfigureServices ( IServiceCollection services )
    {
        services . AddDbContextPool < ApplicationDbContext > ( options =>
            options . UseNpgsql ( Configuration . GetConnectionString ( "DefaultConnection" ) ,
            builder => builder . UsePGroonga ( ) ) ) ;

        // ...
    }
}

var posts = await _dbContext . Posts . Where ( g => g . Content . SimilarSearch ( q ) )
    . OrderByDescending ( g => EF . Functions . PgroongaScore ( ) )
    . ToArrayAsync ( ) ;