RSCG – DynamicsMapper

RSCG – DynamicsMapper
 
 

Mapper for Dataverse client – generates also column names from properties

This is how you can use DynamicsMapper .

The code that you start with is

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net7.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>

	<PropertyGroup>
		<EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
		<CompilerGeneratedFilesOutputPath>$(BaseIntermediateOutputPath)\GX</CompilerGeneratedFilesOutputPath>
	</PropertyGroup>

	<ItemGroup>
	  <PackageReference Include="Microsoft.PowerPlatform.Dataverse.Client" Version="1.1.14" />
	  <PackageReference Include="YC.DynamicsMapper" Version="1.0.8" />
	</ItemGroup>
</Project>

The code that you will use is

using NextGenMapperDemo;
var pm = new PersonMapper();
Console.WriteLine(pm.Entityname);

using DynamicsMapper.Abstractions;

namespace NextGenMapperDemo;


[CrmEntity("person")]
public class Person
{
    [CrmField("personid",Mapping = MappingType.PrimaryId)]
    public Guid ID { get; set; }
    [CrmField("name")]

    public string? Name { get; set; }
}

The code that is generated is

// <auto-generated />
#nullable enable
using Microsoft.Xrm.Sdk;
using System.Linq;

namespace DynamicsMapper.Extension
{
    public static class EntityExtension
    {
        public static Entity? GetAliasedEntity(this Entity entity,string alias)
        {
            var attributes = entity.Attributes.Where(e => e.Key.StartsWith(alias)).ToArray();
            if (!attributes.Any())
                return null;
            var aliasEntity = new Entity();
            foreach (var attribute in attributes)
            {
                if (!(attribute.Value is AliasedValue aliasedValued))
                    continue;
                if (string.IsNullOrEmpty(aliasEntity.LogicalName))
                    aliasEntity.LogicalName = aliasedValued.EntityLogicalName;
                aliasEntity[aliasedValued.AttributeLogicalName] = aliasedValued.Value;
            }

            return aliasEntity;
        }
    }
}

// <auto-generated />
#nullable enable
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;

namespace DynamicsMapper.Mappers
{
    public interface IEntityMapper<T>
    {
        public string Entityname { get; }
        public ColumnSet Columns { get; }

        public T Map(Entity entity);
        public T? Map(Entity entity,string alias);
        public Entity Map(T model);
    }
}

// <auto-generated />
#nullable enable
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;
using DynamicsMapper.Extension;
using DynamicsMapper.Mappers;
using System;

namespace NextGenMapperDemo
{
    public class PersonMapper : IEntityMapper<Person>
    {
        private static readonly string[] columns = new[]
        {
            "personid",
            "name"
        };
        public ColumnSet Columns => new ColumnSet(columns);

        private const string entityname = "person";
        public string Entityname => entityname;

        public Entity Map(Person person)
        {
            var entity = new Entity(entityname);
            entity.Id = person.ID;
            entity["name"] = person.Name;
            return entity;
        }

        public Person? Map(Entity entity,string alias) => InternalMap(entity,alias);
        public Person Map(Entity entity) => InternalMap(entity)!;
        private static Person? InternalMap(Entity source,string? alias = null)
        {
            Entity? entity;
            if (string.IsNullOrEmpty(alias))
            {
                entity = source;
            }
            else
            {
                entity = source.GetAliasedEntity(alias);
                if (entity is null)
                    return null;
            }

            if (entity?.LogicalName != entityname)
                throw new ArgumentException($"entity LogicalName expected to be {entityname} recived: {entity?.LogicalName}","entity");
            var person = new Person();
            person.ID = entity.GetAttributeValue<Guid>("personid");
            person.Name = entity.GetAttributeValue<string?>("name");
            return person;
        }
    }
}

Code and pdf at

https://ignatandrei.github.io/RSCG_Examples/v2/docs/DynamicsMapper