71 lines
2.4 KiB
C#
71 lines
2.4 KiB
C#
using HotChocolate.Language;
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using HotChocolate.Resolvers;
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using HotChocolate.Types;
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using PoweredSoft.CQRS.Abstractions;
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using PoweredSoft.CQRS.Abstractions.Discovery;
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using System;
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using System.Text;
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namespace PoweredSoft.CQRS.GraphQL.HotChocolate
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{
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public class QueryObjectType : ObjectTypeExtension
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{
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private readonly IQueryDiscovery queryDiscovery;
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public QueryObjectType(IQueryDiscovery queryDiscovery) : base()
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{
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this.queryDiscovery = queryDiscovery;
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}
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protected override void Configure(IObjectTypeDescriptor desc)
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{
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desc.Name("Query");
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foreach (var q in queryDiscovery.GetQueries())
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{
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if (q.Category != "BasicQuery")
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return;
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var queryField = desc.Field(q.LowerCamelCaseName);
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var typeToGet = typeof(IQueryHandler<,>).MakeGenericType(q.QueryType, q.QueryResultType);
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queryField.Type(q.QueryResultType);
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// TODO.
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// always required.
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//queryField.Use((sp, d) => new QueryAuthorizationMiddleware(q.QueryType, d));
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if (q.QueryType.GetProperties().Length == 0)
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{
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queryField.Resolve(async ctx =>
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{
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var queryArgument = Activator.CreateInstance(q.QueryType);
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return await HandleQuery(ctx, typeToGet, queryArgument);
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});
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continue;
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}
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queryField.Argument("params", t => t.Type(q.QueryType));
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queryField.Resolve(async ctx =>
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{
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var queryArgument = ctx.ArgumentValue<object>("params");
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return await HandleQuery(ctx, typeToGet, queryArgument);
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});
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/*
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if (q.QueryObjectRequired)
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queryField.Use<QueryParamRequiredMiddleware>();*/
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queryField.Use<QueryValidationMiddleware>();
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}
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}
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private async System.Threading.Tasks.Task<object> HandleQuery(IResolverContext resolverContext, Type typeToGet, object queryArgument)
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{
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dynamic service = resolverContext.Service(typeToGet);
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var result = await service.HandleAsync((dynamic)queryArgument);
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return result;
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}
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}
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} |