public virtual bool TryCreate <TIn, TOut>(IQuerySpecification <TIn, TOut> specification, out IQueryTransform <TIn, TOut> transform)
{
if (_transformFactories.TryGetValue(specification.Name, out var factories))
{
foreach (var factory in factories)
{
if (factory.TryCreate(specification, out transform))
{
return(true);
}
}
}
transform = null;
return(false);
}
public virtual bool TryCreate <TIn, TOut>(IQuerySpecification <TIn, TOut> specification, out IQueryTransform <TIn, TOut> transform)
{
if (specification is SelectQuerySpecification <TIn, TOut> selectSpec)
{
transform = new SelectQueryTransform <TIn, TOut>(selectSpec.Expression);
return(true);
}
transform = null;
return(true);
}
public ChainQueryTransform(IQueryPipe <TIn> inputPipe, IQueryPipe <TOut> outputPipe, IQueryTransform <TIn, TOut> transform)
{
_inputPipe = inputPipe ?? throw new ArgumentNullException(nameof(inputPipe));
_outputPipe = outputPipe ?? throw new ArgumentNullException(nameof(outputPipe));
_transform = transform ?? throw new ArgumentNullException(nameof(transform));
}