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Updates NoEntityFrameworkExample to use a hardcoded in-memory dataset, demonstrating how to implement a custom read-only resource service and resource repository, which compiles the produced LINQ query and executes it against the dataset.
1 parent 9083b62 commit 77d37c9

28 files changed

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-358
lines changed

‎src/Examples/NoEntityFrameworkExample/Data/AppDbContext.cs

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‎src/Examples/NoEntityFrameworkExample/Data/Database.cs

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using JetBrains.Annotations;
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using NoEntityFrameworkExample.Models;
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namespace NoEntityFrameworkExample.Data;
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[UsedImplicitly(ImplicitUseKindFlags.InstantiatedNoFixedConstructorSignature)]
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internal sealed class Database
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{
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public static List<TodoItem> TodoItems { get; }
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public static List<Tag> Tags { get; }
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public static List<Person> People { get; }
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static Database()
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{
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int personIndex = 0;
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int tagIndex = 0;
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int todoItemIndex = 0;
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var john = new Person
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{
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Id = ++personIndex,
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FirstName = "John",
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LastName = "Doe"
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};
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var jane = new Person
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{
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Id = ++personIndex,
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FirstName = "Jane",
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LastName = "Doe"
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};
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var personalTag = new Tag
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{
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Id = ++tagIndex,
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Name = "Personal"
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};
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var familyTag = new Tag
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{
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Id = ++tagIndex,
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Name = "Family"
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};
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var businessTag = new Tag
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{
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Id = ++tagIndex,
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Name = "Business"
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};
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TodoItems = new List<TodoItem>
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{
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new()
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{
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Id = ++todoItemIndex,
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Description = "Make homework",
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DurationInHours = 3,
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Priority = TodoItemPriority.High,
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Owner = john,
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Assignee = jane,
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Tags =
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{
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personalTag
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}
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},
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new()
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{
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Id = ++todoItemIndex,
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Description = "Book vacation",
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DurationInHours = 2,
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Priority = TodoItemPriority.Low,
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Owner = jane,
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Tags =
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{
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personalTag
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}
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},
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new()
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{
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Id = ++todoItemIndex,
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Description = "Cook dinner",
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DurationInHours = 1,
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Priority = TodoItemPriority.Medium,
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Owner = jane,
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Assignee = john,
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Tags =
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{
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familyTag,
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personalTag
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}
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},
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new()
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{
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Id = ++todoItemIndex,
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Description = "Check emails",
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DurationInHours = 1,
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Priority = TodoItemPriority.Low,
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Owner = john,
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Assignee = john,
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Tags =
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{
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businessTag
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}
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}
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};
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Tags = new List<Tag>
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{
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personalTag,
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familyTag,
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businessTag
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};
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People = new List<Person>
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{
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john,
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jane
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};
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foreach (Tag tag in Tags)
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{
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tag.TodoItems = TodoItems.Where(todoItem => todoItem.Tags.Any(tagInTodoItem => tagInTodoItem.Id == tag.Id)).ToHashSet();
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}
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foreach (Person person in People)
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{
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person.OwnedTodoItems = TodoItems.Where(todoItem => todoItem.Owner == person).ToHashSet();
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person.AssignedTodoItems = TodoItems.Where(todoItem => todoItem.Assignee == person).ToHashSet();
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}
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}
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}

‎src/Examples/NoEntityFrameworkExample/Data/InMemoryModel.cs

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using System.Reflection;
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using JsonApiDotNetCore.Configuration;
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using Microsoft.EntityFrameworkCore.Metadata;
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namespace NoEntityFrameworkExample.Data;
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internal sealed class InMemoryModel : RuntimeModel
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{
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public InMemoryModel(IResourceGraph resourceGraph)
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{
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foreach (ResourceType resourceType in resourceGraph.GetResourceTypes())
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{
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RuntimeEntityType entityType = AddEntityType(resourceType.ClrType.FullName!, resourceType.ClrType);
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SetEntityProperties(entityType, resourceType);
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}
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}
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private static void SetEntityProperties(RuntimeEntityType entityType, ResourceType resourceType)
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{
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foreach (PropertyInfo property in resourceType.ClrType.GetProperties())
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{
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entityType.AddProperty(property.Name, property.PropertyType, property);
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}
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}
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}

‎src/Examples/NoEntityFrameworkExample/InMemoryInverseNavigationResolver.cs

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using JsonApiDotNetCore.Configuration;
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using JsonApiDotNetCore.Resources.Annotations;
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using NoEntityFrameworkExample.Models;
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namespace NoEntityFrameworkExample;
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internal sealed class InMemoryInverseNavigationResolver : IInverseNavigationResolver
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{
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private readonly IResourceGraph _resourceGraph;
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public InMemoryInverseNavigationResolver(IResourceGraph resourceGraph)
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{
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_resourceGraph = resourceGraph;
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}
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/// <inheritdoc />
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public void Resolve()
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{
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ResourceType todoItemType = _resourceGraph.GetResourceType<TodoItem>();
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RelationshipAttribute todoItemOwnerRelationship = todoItemType.GetRelationshipByPropertyName(nameof(TodoItem.Owner));
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RelationshipAttribute todoItemAssigneeRelationship = todoItemType.GetRelationshipByPropertyName(nameof(TodoItem.Assignee));
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RelationshipAttribute todoItemTagsRelationship = todoItemType.GetRelationshipByPropertyName(nameof(TodoItem.Tags));
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ResourceType personType = _resourceGraph.GetResourceType<Person>();
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RelationshipAttribute personOwnedTodoItemsRelationship = personType.GetRelationshipByPropertyName(nameof(Person.OwnedTodoItems));
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RelationshipAttribute personAssignedTodoItemsRelationship = personType.GetRelationshipByPropertyName(nameof(Person.AssignedTodoItems));
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ResourceType tagType = _resourceGraph.GetResourceType<Tag>();
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RelationshipAttribute tagTodoItemsRelationship = tagType.GetRelationshipByPropertyName(nameof(Tag.TodoItems));
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// Inverse navigations are required for pagination on non-primary endpoints.
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todoItemOwnerRelationship.InverseNavigationProperty = personOwnedTodoItemsRelationship.Property;
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todoItemAssigneeRelationship.InverseNavigationProperty = personAssignedTodoItemsRelationship.Property;
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todoItemTagsRelationship.InverseNavigationProperty = tagTodoItemsRelationship.Property;
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personOwnedTodoItemsRelationship.InverseNavigationProperty = todoItemOwnerRelationship.Property;
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personAssignedTodoItemsRelationship.InverseNavigationProperty = todoItemAssigneeRelationship.Property;
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tagTodoItemsRelationship.InverseNavigationProperty = todoItemTagsRelationship.Property;
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}
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}

‎src/Examples/NoEntityFrameworkExample/Models/Person.cs

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using System.ComponentModel.DataAnnotations.Schema;
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using JetBrains.Annotations;
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using JsonApiDotNetCore.Resources;
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using JsonApiDotNetCore.Resources.Annotations;
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namespace NoEntityFrameworkExample.Models;
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[UsedImplicitly(ImplicitUseTargetFlags.Members)]
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[Resource]
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public sealed class Person : Identifiable<long>
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{
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[Attr]
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public string? FirstName { get; set; }
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[Attr]
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public string LastName { get; set; } = null!;
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[Attr(Capabilities = AttrCapabilities.AllowView)]
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[NotMapped]
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public string DisplayName => FirstName != null ? $"{FirstName} {LastName}" : LastName;
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[HasMany]
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public ISet<TodoItem> OwnedTodoItems { get; set; } = new HashSet<TodoItem>();
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[HasMany]
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public ISet<TodoItem> AssignedTodoItems { get; set; } = new HashSet<TodoItem>();
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}

‎src/Examples/NoEntityFrameworkExample/Models/Tag.cs

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using System.ComponentModel.DataAnnotations;
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using JetBrains.Annotations;
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using JsonApiDotNetCore.Resources;
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using JsonApiDotNetCore.Resources.Annotations;
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namespace NoEntityFrameworkExample.Models;
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[UsedImplicitly(ImplicitUseTargetFlags.Members)]
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[Resource]
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public sealed class Tag : Identifiable<long>
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{
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[Attr]
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[MinLength(1)]
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public string Name { get; set; } = null!;
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[HasMany]
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public ISet<TodoItem> TodoItems { get; set; } = new HashSet<TodoItem>();
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}

‎src/Examples/NoEntityFrameworkExample/Models/TodoItem.cs

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using System.ComponentModel.DataAnnotations;
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using JetBrains.Annotations;
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using JsonApiDotNetCore.Controllers;
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using JsonApiDotNetCore.Resources;
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using JsonApiDotNetCore.Resources.Annotations;
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namespace NoEntityFrameworkExample.Models;
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[UsedImplicitly(ImplicitUseTargetFlags.Members)]
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[Resource(GenerateControllerEndpoints = JsonApiEndpoints.Query)]
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public sealed class TodoItem : Identifiable<long>
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{
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[Attr]
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public string Description { get; set; } = null!;
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[Attr]
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[Required]
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public TodoItemPriority? Priority { get; set; }
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[Attr]
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public long? DurationInHours { get; set; }
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[HasOne]
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public Person Owner { get; set; } = null!;
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[HasOne]
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public Person? Assignee { get; set; }
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[HasMany]
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public ISet<Tag> Tags { get; set; } = new HashSet<Tag>();
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}

‎src/Examples/NoEntityFrameworkExample/Models/TodoItemPriority.cs

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using JetBrains.Annotations;
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namespace NoEntityFrameworkExample.Models;
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[UsedImplicitly(ImplicitUseTargetFlags.Members)]
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public enum TodoItemPriority
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{
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High = 1,
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Medium = 2,
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Low = 3
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}

‎src/Examples/NoEntityFrameworkExample/Models/WorkItem.cs

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‎src/Examples/NoEntityFrameworkExample/NoEntityFrameworkExample.csproj

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</ItemGroup>
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<ItemGroup>
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<PackageReference Include="Dapper" Version="2.0.123" />
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<PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="$(EFCoreVersion)" />
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<PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="$(EFCorePostgresVersion)" />
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</ItemGroup>
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</Project>

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