public void GetNext()
{
var parameter = new ExpressionParameters();
parameter.Next().Should().Be("a");
parameter.Next().Should().Be("b");
}
public Expression <Func <TEntity, dynamic> > CreateExpression()
{
var operationDefinition = _queryDocument.Document.Definitions.FirstOrDefault() as OperationDefinitionNode;
if (operationDefinition.Operation == OperationType.Subscription)
{
throw new UnsupportedOperationException(operationDefinition.Operation);
}
var fieldNode = operationDefinition.SelectionSet.Selections.FirstOrDefault() as FieldNode;
var parameter = Expression.Parameter(typeof(TEntity), _expressionParameters.Next());
var newExpression = CreateNewExpression(fieldNode, typeof(TEntity), parameter);
return(Expression.Lambda <Func <TEntity, dynamic> >(newExpression, parameter));
}
public Expression <Func <TEntity, dynamic> > CreateExpression <TSchema>(params string[] filters)
{
var operationDefinition = _queryDocument.Document.Definitions.FirstOrDefault() as OperationDefinitionNode;
if (operationDefinition.Operation == OperationType.Subscription)
{
throw new UnsupportedOperationException(operationDefinition.Operation);
}
var fieldNode = operationDefinition
.SelectionSet
.Selections
.Cast <FieldNode>()
.FirstOrDefault(s => !filters.Any(f => s.Name.Kind.ToString() == f));
var parameter = Expression.Parameter(typeof(TEntity), _expressionParameters.Next());
var newExpression = CreateNewExpression(fieldNode, typeof(TEntity), typeof(TSchema), parameter, filters);
return(Expression.Lambda <Func <TEntity, dynamic> >(newExpression, parameter));
}