/// <summary>
/// Appends mappings between the current qualified columns and their properties, e.g. <c>T0."MyColumn" AS "Item.MyValue"</c>, to the projection buffer. Identical to calling <c>Cols().As().Props()</c>.
/// </summary>
/// <param name="projection">The current projection</param>
/// <param name="tblAlias">The table alias to qualify each column name with.</param>
/// <returns>A new projection containing the appended buffer.</returns>
public static IProjection Star(this IProjection projection, string tblAlias = null)
{
if (!projection.Any())
{
throw ProjectionException.AttributesNotFound(projection.Metadata);
}
IProjectionMetadata metadata = ProjectionHelper.GetPreferredTableMetadata(projection.Metadata);
return(projection.With(metadata).Cols(tblAlias).As().Props());
}
/// <summary>
/// Appends mappings between the current qualified columns and their properties, e.g. <c>T0."MyColumn" AS "Item.MyValue"</c>, to the projection buffer. Identical to calling <c>Cols().As().Props()</c>.
/// </summary>
/// <param name="projection">The current projection</param>
/// <returns>A new projection containing the appended buffer.</returns>
public static IProjection Star(this IProjection projection)
{
if (!projection.Any())
{
throw ProjectionException.FromProjection(projection, "No attributes found.");
}
IProjectionMetadata metadata = ProjectionHelper.GetPreferredTableMetadata(projection).Identity.GetMetadata <IProjectionMetadata>();
return(projection.With(metadata).Cols().As().Props());
}
/// <summary>
/// Appends a table-valued parameter from the current values, e.g. <c>@TP0</c>, to the projection buffer.
/// </summary>
/// <param name="projection">The current projection.</param>
/// <returns>A new attribute containing the appended buffer.</returns>
public static IProjectionAttribute TvpName(this IProjection projection)
{
if (projection.Data == null)
{
throw new ProjectionException($"No value information found for {projection.Metadata.Identity}.");
}
else if (!projection.Any())
{
throw new ProjectionException($"No attributes found for {projection.Metadata.Identity}.");
}
RelationHeader header = new RelationHeader(projection.Metadata.Identity.Schema, projection.Header.Select(a => a.Metadata.Relation).ToList());
Relation relation = new Relation(projection.Data.Input, header);
string paramName = projection.Context.Lookup.Custom("TP", projection.Identity, metadata: projection.Metadata.Identity, value: projection.Data.Input);
string dialectName = projection.Context.Domain.Dialect.Parameter(paramName);
return(projection.Attr().Append(dialectName).Append(new TableValuedParameter(paramName, relation)));
}
public bool IsInitialized(IProjection[] projections)
{
if (IsVersioningTableExists())
{
return projections.Any(IsVersionExist);
}
return false;
}
public bool IsInitialized(IProjection[] projections)
{
return projections.Any(IsVersionExist);
}