public void SupportsDefaultArgumentsInNonRoot()
{
var schemaProvider = SchemaBuilder.FromObject <TestSchema>();
schemaProvider.AddEnum("HeightUnit", typeof(HeightUnit), "Unit of height measurement");
schemaProvider.Type <Person>().ReplaceField("height", new { unit = HeightUnit.Cm }, (p, param) => p.GetHeight(param.unit), "Return me, or someone else");
var result = new GraphQLCompiler(schemaProvider, new DefaultMethodProvider()).Compile(@"query {
people { id height }
}").ExecuteQuery(new TestSchema(), null);
Assert.Equal(1, Enumerable.Count(result.Data));
var person = Enumerable.First((dynamic)result.Data["people"]);
// we only have the fields requested
Assert.Equal(2, person.GetType().GetFields().Length);
Assert.Equal("id", person.GetType().GetFields()[0].Name);
Assert.Equal("height", person.GetType().GetFields()[1].Name);
Assert.Equal(183.0, person.height);
}
public void CanParseSimpleQueryOptionalComma()
{
var objectSchemaProvider = SchemaBuilder.FromObject <TestSchema>();
var tree = new GraphQLCompiler(objectSchemaProvider, new DefaultMethodProvider()).Compile(@"
{
people { id, name }
}");
Assert.Single(tree.Fields);
dynamic result = tree.Fields.ElementAt(0).Execute(new TestSchema());
Assert.Equal(1, Enumerable.Count(result));
var person = Enumerable.ElementAt(result, 0);
// we only have the fields requested
Assert.Equal(2, person.GetType().GetFields().Length);
Assert.Equal("Id", person.GetType().GetFields()[0].Name);
Assert.Equal("Name", person.GetType().GetFields()[1].Name);
}
public void SupportsArguments()
{
var schemaProvider = SchemaBuilder.FromObject <TestSchema>(false);
// Add a argument field with a require parameter
schemaProvider.AddField("user", new { id = Required <int>() }, (ctx, param) => ctx.Users.Where(u => u.Id == param.id).FirstOrDefault(), "Return a user by ID");
var tree = new GraphQLCompiler(schemaProvider, new DefaultMethodProvider()).Compile(@"query {
user(id: 1) { id }
}").Operations.First();
// db => db.Users.Where(u => u.Id == id).Select(u => new {id = u.Id}]).FirstOrDefault()
Assert.Single(tree.Fields);
dynamic user = tree.Fields.ElementAt(0).Execute(new TestSchema());
// we only have the fields requested
Assert.Equal(1, user.GetType().GetFields().Length);
Assert.Equal("id", user.GetType().GetFields()[0].Name);
Assert.Equal(1, user.id);
}
public void CanParseSimpleQuery()
{
var objectSchemaProvider = SchemaBuilder.FromObject <TestSchema>();
var tree = new GraphQLCompiler(objectSchemaProvider, new DefaultMethodProvider()).Compile(@"
{
people { id name }
}");
Assert.Single(tree.Operations);
Assert.Single(tree.Operations.First().Fields);
var result = tree.ExecuteQuery(new TestSchema());
Assert.Single(result.Data);
var person = Enumerable.ElementAt((dynamic)result.Data["people"], 0);
// we only have the fields requested
Assert.Equal(2, person.GetType().GetFields().Length);
Assert.Equal("id", person.GetType().GetFields()[0].Name);
Assert.Equal("name", person.GetType().GetFields()[1].Name);
}
public void CanParseQueryWithCollectionDeep()
{
var tree = new GraphQLCompiler(SchemaBuilder.FromObject <TestSchema>(), new DefaultMethodProvider()).Compile(@"
{
people { id
projects {
name
tasks { id name }
}
}
}");
Assert.Single(tree.Fields);
dynamic result = tree.Fields.ElementAt(0).Execute(new TestSchema());
Assert.Equal(1, Enumerable.Count(result));
var person = Enumerable.ElementAt(result, 0);
// we only have the fields requested
Assert.Equal(2, person.GetType().GetFields().Length);
Assert.Equal("Id", person.GetType().GetFields()[0].Name);
// make sure we sub-select correctly to make the requested object graph
Assert.Equal("projects", person.GetType().GetFields()[1].Name);
var projects = person.projects;
Assert.Equal(1, Enumerable.Count(projects));
var project = Enumerable.ElementAt(projects, 0);
Assert.Equal(2, project.GetType().GetFields().Length);
Assert.Equal("Name", project.GetType().GetFields()[0].Name);
Assert.Equal("tasks", project.GetType().GetFields()[1].Name);
var tasks = project.tasks;
Assert.Equal(1, Enumerable.Count(tasks));
var task = Enumerable.ElementAt(tasks, 0);
Assert.Equal(2, task.GetType().GetFields().Length);
Assert.Equal("Id", task.GetType().GetFields()[0].Name);
Assert.Equal("Name", task.GetType().GetFields()[1].Name);
}
public void SupportsComments()
{
var schemaProvider = SchemaBuilder.FromObject <TestSchema>();
// Add a argument field with a require parameter
var tree = new GraphQLCompiler(schemaProvider, new DefaultMethodProvider()).Compile(@"
# hey there
query {
# yep
person(id: ""cccccccc-bbbb-4444-1111-ccddeeff0033"") { # this is a good field
id projects { id name }
}
}").Operations.First();
Assert.Single(tree.Fields);
dynamic user = tree.Fields.ElementAt(0).Execute(new TestSchema());
// we only have the fields requested
Assert.Equal(2, user.GetType().GetFields().Length);
Assert.Equal("id", user.GetType().GetFields()[0].Name);
Assert.Equal(new Guid("cccccccc-bbbb-4444-1111-ccddeeff0033"), user.id);
}
public void SupportsDefaultArgumentsInNonRoot()
{
var schemaProvider = SchemaBuilder.FromObject <TestSchema>();
schemaProvider.Type <Person>().ReplaceField("height", new { unit = HeightUnit.Cm }, (p, param) => p.GetHeight(param.unit), "Return me, or someone else");
var tree = new GraphQLCompiler(schemaProvider, new DefaultMethodProvider()).Compile(@"query {
people { id height }
}");
Assert.Single(tree.Fields);
dynamic result = tree.Fields.ElementAt(0).Execute(new TestSchema());
Assert.Equal(1, Enumerable.Count(result));
var person = Enumerable.First(result);
// we only have the fields requested
Assert.Equal(2, person.GetType().GetFields().Length);
Assert.Equal("Id", person.GetType().GetFields()[0].Name);
Assert.Equal("Height", person.GetType().GetFields()[1].Name);
Assert.Equal(183.0, person.Height);
}
public void CanQueryExtendedFields()
{
var objectSchemaProvider = SchemaBuilder.FromObject <TestSchema>();
objectSchemaProvider.Type <Person>().AddField("thing", p => p.Id + " - " + p.Name, "A weird field I want");
var tree = new GraphQLCompiler(objectSchemaProvider, new DefaultMethodProvider()).Compile(@"
{
people { id thing }
}");
Assert.Single(tree.Fields);
dynamic result = tree.Fields.ElementAt(0).Execute(new TestSchema());
Assert.Equal(1, Enumerable.Count(result));
var person = Enumerable.ElementAt(result, 0);
// we only have the fields requested
Assert.Equal(2, person.GetType().GetFields().Length);
Assert.Equal("Id", person.GetType().GetFields()[0].Name);
Assert.Equal("thing", person.GetType().GetFields()[1].Name);
}
public void CanQueryExtendedFields()
{
var objectSchemaProvider = SchemaBuilder.FromObject <TestSchema>();
objectSchemaProvider.Type <Person>().AddField("thing", p => p.Id + " - " + p.Name, "A weird field I want");
var tree = new GraphQLCompiler(objectSchemaProvider, new DefaultMethodProvider()).Compile(@"
{
people { id thing }
}");
Assert.Single(tree.Operations);
Assert.Single(tree.Operations.First().QueryFields);
var result = tree.ExecuteQuery(new TestSchema(), null);
Assert.Single(result.Data);
var person = Enumerable.ElementAt((dynamic)result.Data["people"], 0);
// we only have the fields requested
Assert.Equal(2, person.GetType().GetFields().Length);
Assert.Equal("id", person.GetType().GetFields()[0].Name);
Assert.Equal("thing", person.GetType().GetFields()[1].Name);
}
/// <summary>
/// Execute a query using this schema.
/// </summary>
/// <param name="gql">The query</param>
/// <param name="context">The context object. An instance of the context the schema was build from</param>
/// <param name="serviceProvider">A service provider used for looking up dependencies of field selections and mutations</param>
/// <param name="claims">Optional claims to check access for queries</param>
/// <param name="methodProvider"></param>
/// <param name="includeDebugInfo"></param>
/// <typeparam name="TContextType"></typeparam>
/// <returns></returns>
public async Task <QueryResult> ExecuteQueryAsync(QueryRequest gql, TContextType context, IServiceProvider serviceProvider, ClaimsIdentity claims, IMethodProvider methodProvider = null)
{
if (methodProvider == null)
{
methodProvider = new DefaultMethodProvider();
}
QueryResult result;
try
{
var graphQLCompiler = new GraphQLCompiler(this, methodProvider);
var queryResult = graphQLCompiler.Compile(gql, claims);
result = await queryResult.ExecuteQueryAsync(context, serviceProvider, gql.OperationName);
}
catch (Exception ex)
{
// error with the whole query
result = new QueryResult(new GraphQLError(ex.InnerException != null ? ex.InnerException.Message : ex.Message));
}
return(result);
}
public void CanParseQueryWithRelation()
{
var tree = new GraphQLCompiler(SchemaBuilder.FromObject <TestSchema>(), new DefaultMethodProvider()).Compile(@"
{
people { id name user { field1 } }
}");
// People.Select(p => new { Id = p.Id, Name = p.Name, User = new { Field1 = p.User.Field1 })
var result = tree.ExecuteQuery(new TestSchema());
Assert.Equal(1, Enumerable.Count((dynamic)result.Data["people"]));
var person = Enumerable.ElementAt((dynamic)result.Data["people"], 0);
// we only have the fields requested
Assert.Equal(3, person.GetType().GetFields().Length);
Assert.Equal("id", person.GetType().GetFields()[0].Name);
Assert.Equal("name", person.GetType().GetFields()[1].Name);
// make sure we sub-select correctly to make the requested object graph
Assert.Equal("user", person.GetType().GetFields()[2].Name);
var user = person.user;
Assert.Single(user.GetType().GetFields());
Assert.Equal("field1", user.GetType().GetFields()[0].Name);
}
/// <summary>
/// Execute a query using this schema.
/// </summary>
/// <param name="gql">The query</param>
/// <param name="context">The context object. An instance of the context the schema was build from</param>
/// <param name="serviceProvider">A service provider used for looking up dependencies of field selections and mutations</param>
/// <param name="claims">Optional claims to check access for queries</param>
/// <param name="methodProvider"></param>
/// <param name="includeDebugInfo"></param>
/// <typeparam name="TContextType"></typeparam>
/// <returns></returns>
public QueryResult ExecuteQuery(QueryRequest gql, TContextType context, IServiceProvider serviceProvider, ClaimsIdentity claims, IMethodProvider methodProvider = null, bool includeDebugInfo = false)
{
if (methodProvider == null)
{
methodProvider = new DefaultMethodProvider();
}
Stopwatch timer = null;
if (includeDebugInfo)
{
timer = new Stopwatch();
timer.Start();
}
QueryResult result;
try
{
var graphQLCompiler = new GraphQLCompiler(this, methodProvider);
var queryResult = graphQLCompiler.Compile(gql, claims);
result = queryResult.ExecuteQuery(context, serviceProvider, gql.OperationName);
}
catch (Exception ex)
{
// error with the whole query
result = new QueryResult {
Errors = { new GraphQLError(ex.InnerException != null ? ex.InnerException.Message : ex.Message) }
};
}
if (includeDebugInfo && timer != null)
{
timer.Stop();
result.SetDebug(new { TotalMilliseconds = timer.ElapsedMilliseconds });
}
return(result);
}
/// <summary>
/// Extension method to query an object purely based on the a defined schema of that object.
/// </summary>
/// <param name="context">The root of your object graph you are querying. E.g. a DbContext</param>
/// <param name="request">GraphQL request object</param>
/// <param name="schemaProvider">Schema definition. Defines new fields/entities. Maps names, etc.</param>
/// <param name="methodProvider">Extend the query language with methods</param>
/// <param name="includeDebugInfo">Include debug/timing information in the result</param>
/// <typeparam name="TType"></typeparam>
/// <returns></returns>
public static QueryResult QueryObject <TType>(this TType context, QueryRequest request, ISchemaProvider schemaProvider, IMethodProvider methodProvider = null, bool includeDebugInfo = false, params object[] mutationArgs)
{
if (methodProvider == null)
{
methodProvider = new DefaultMethodProvider();
}
Stopwatch timer = null;
if (includeDebugInfo)
{
timer = new Stopwatch();
timer.Start();
}
QueryResult result = null;
try
{
var graphQLCompiler = new GraphQLCompiler(schemaProvider, methodProvider);
var queryResult = graphQLCompiler.Compile(request);
result = queryResult.ExecuteQuery(context, request.OperationName, mutationArgs);
}
catch (Exception ex)
{
// error with the whole query
result = new QueryResult {
Errors = { new GraphQLError(ex.InnerException != null ? ex.InnerException.Message : ex.Message) }
};
}
if (includeDebugInfo && timer != null)
{
timer.Stop();
result.SetDebug(new { TotalMilliseconds = timer.ElapsedMilliseconds });
}
return(result);
}
public void CanParseQueryWithRelationDeep()
{
var tree = new GraphQLCompiler(SchemaBuilder.FromObject <TestSchema>(), new DefaultMethodProvider()).Compile(@"
{
people { id name
User {
field1
nestedRelation { id name }
}
}
}");
// People.Select(p => new { Id = p.Id, Name = p.Name, User = new { Field1 = p.User.Field1, NestedRelation = new { Id = p.User.NestedRelation.Id, Name = p.User.NestedRelation.Name } })
Assert.Single(tree.Fields);
dynamic result = tree.Fields.ElementAt(0).Execute(new TestSchema());
Assert.Equal(1, Enumerable.Count(result));
var person = Enumerable.ElementAt(result, 0);
// we only have the fields requested
Assert.Equal(3, person.GetType().GetFields().Length);
Assert.Equal("Id", person.GetType().GetFields()[0].Name);
Assert.Equal("Name", person.GetType().GetFields()[1].Name);
// make sure we sub-select correctly to make the requested object graph
Assert.Equal("User", person.GetType().GetFields()[2].Name);
var user = person.User;
Assert.Equal(2, user.GetType().GetFields().Length);
Assert.Equal("Field1", user.GetType().GetFields()[0].Name);
Assert.Equal("NestedRelation", user.GetType().GetFields()[1].Name);
var nested = person.User.NestedRelation;
Assert.Equal(2, nested.GetType().GetFields().Length);
Assert.Equal("Id", nested.GetType().GetFields()[0].Name);
Assert.Equal("Name", nested.GetType().GetFields()[1].Name);
}
