public ProcPage(IProjection model, IProjection result)
{
this.M = model?.Cast <TModel>() ?? throw new ArgumentNullException(nameof(model));
this.R = result?.Cast <TResult>() ?? throw new ArgumentNullException(nameof(result));
this.Context = model.Context;
this.Model = (TModel)this.M.Attr().Field?.Invoke()?.Value;
}
private IEnumerable <IProjectionAttribute> CreateDefaultHeader(IProjectionMetadata metadata)
{
ProjectionIdentity identity = this.Identity;
IProcContext context = this.Context;
IEnumerable <IProjectionMetadata> header = this.SelectAttributes(metadata);
if (this.Data != null)
{
using ProjectionReader reader = new ProjectionReader(this.Data.Source, header);
if (reader.Read())
{
foreach (var(valueMetadata, data) in header.Zip(reader.GetData()))
{
yield return(new ProjectionAttribute(identity, context, valueMetadata, data));
}
yield break;
}
}
foreach (IProjectionMetadata attributeMetadata in header)
{
yield return(new ProjectionAttribute(identity, context, attributeMetadata, data: null));
}
}
public ProcPage(IProjection model, IProjection result)
{
this.M = model?.Cast <TModel>() ?? throw new ArgumentNullException(nameof(model));
this.R = result?.Cast <TResult>() ?? throw new ArgumentNullException(nameof(result));
this.Context = model.Context;
this.Model = (TModel)(this.M.Attr().Data?.Source.Snapshot ?? default);
}
public ProjectionAttribute(ProjectionIdentity identity, IProcContext context, IProjectionMetadata metadata, IProjectionData data)
{
this.Identity = identity ?? throw ProjectionException.ArgumentNull(nameof(identity), metadata);
this.Context = context ?? throw ProjectionException.ArgumentNull(nameof(context), metadata);
this.Metadata = metadata ?? throw ProjectionException.ArgumentNull(nameof(metadata), metadata);
this.Data = data;
this.Content = SqlContent.Empty;
}
public Projection(ProjectionIdentity identity, IProcContext context, IProjectionMetadata metadata)
{
this.Identity = identity ?? throw ProjectionException.ArgumentNull(nameof(identity), metadata);
this.Context = context ?? throw ProjectionException.ArgumentNull(nameof(context), metadata);
this.Metadata = metadata;
this.Data = ProjectionData.Resolve(identity);
this.Options = ProjectionOptions.Default;
this.Header = this.CreateDefaultHeader(metadata);
}
internal Projection(IProjectionIdentity identity, IProcContext context, IProjectionMetadata metadata)
{
this.Identity = identity ?? throw ProjectionException.ArgumentNull(nameof(identity));
this.Context = context ?? throw ProjectionException.ArgumentNull(nameof(context));
this.Metadata = metadata ?? throw ProjectionException.FromAttribute(identity.Schema.Model, null, message: "Projection metadata not found.");
this.Source = identity.Field;
this.Options = new ProjectionOptions();
this.Attributes = this.CreateDefaultAttributes(this.Metadata);
}
public ProjectionValues(IProcContext context, ProjectionIdentity identity, IEnumerable <IProjection <TItem> > items, int batchIndex = -1)
{
this.Context = context ?? throw new ArgumentNullException(nameof(context));
this.Identity = identity ?? throw new ArgumentNullException(nameof(identity));
this.Items = items ?? throw new ArgumentNullException(nameof(identity));
this.BatchIndex = batchIndex;
if (this.Items is IProjectionValues <TItem> innerValues)
{
this.Items = innerValues.Items;
}
}
public virtual IProjection <TModel> GetProjection <TModel>(IProcContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
ISchema schema = context.Domain.Schemas.GetSchema(typeof(IList <TModel>));
IProjectionMetadata metadata = schema.Require <IProjectionMetadata>();
ProjectionIdentity identity = new ProjectionIdentity(schema);
return(new Projection <TModel>(identity, context, metadata.Item ?? metadata));
}
public virtual IProjection <TModel> GetProjection <TModel>(IProcContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
ISchema schema = context.Domain.Schemas.GetSchema(typeof(IList <TModel>));
IProjectionMetadata metadata = schema.GetMetadata <IProjectionMetadata>();
if (metadata == null)
{
throw new ProjectionException("Unable to locate projection metadata for model.");
}
ProjectionIdentity identity = new ProjectionIdentity(schema);
return(new Projection <TModel>(identity, context, metadata.Item ?? metadata));
}
public Projection(IProjectionIdentity identity, IProcContext context)
: base(identity, context)
{
}
internal Projection(IProjectionIdentity identity, IProcContext context, IProjectionMetadata metadata)
: base(identity, context, metadata)
{
}
public Projection(ProjectionIdentity identity, IProcContext context, IProjectionMetadata metadata)
: base(identity, context, metadata)
{
}
