/// <summary>
/// Tries to get the column with the given <see cref="Guid"/> from the builder,
/// if the builder has a column with the given <see cref="Guid"/>.
/// </summary>
/// <typeparam name="T">
/// The <see cref="Type"/> of data projected by the column.
/// </typeparam>
/// <param name="self">
/// The builder instance.
/// </param>
/// <param name="columnGuid">
/// The <see cref="Guid"/> of the column to retrieve.
/// </param>
/// <returns>
/// The column, if it exists; <c>null</c> otherwise.
/// </returns>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="self"/> is <c>null</c>.
/// </exception>
public static IDataColumn <T> GetColumnOrNull <T>(
this ITableBuilderWithRowCount self,
Guid columnGuid)
{
Guard.NotNull(self, nameof(self));
return(self.GetColumnOrNull <T>(x => x.Configuration.Metadata.Guid == columnGuid));
}
/// <summary>
/// Adds a new column to the builder with the given
/// configuration and projection.
/// </summary>
/// <typeparam name="T">
/// The <see cref="Type"/> of data being projected.
/// </typeparam>
/// <param name="self">
/// The builder instance.
/// </param>
/// <param name="column">
/// The column configuration the added column is to have.
/// </param>
/// <param name="projection">
/// The projection the added column is to have.
/// </param>
/// <returns>
/// The builder instance.
/// </returns>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="column"/> is <c>null</c>.
/// - or -
/// <paramref name="projection"/> is <c>null</c>.
/// - or -
/// <paramref name="self"/> is <c>null</c>.
/// </exception>
public static ITableBuilderWithRowCount AddColumn <T>(
this ITableBuilderWithRowCount self,
ColumnConfiguration column,
IProjection <int, T> projection)
{
Guard.NotNull(self, nameof(self));
Guard.NotNull(projection, nameof(projection));
return(self.AddColumn(new BaseDataColumn <T>(column, projection)));
}
/// <summary>
/// Adds a new hierarchical column to the builder with the given
/// configuration, projection, and info providers.
/// </summary>
/// <typeparam name="T">
/// The <see cref="Type"/> of data being projected.
/// </typeparam>
/// <param name="self">
/// The builder instance.
/// </param>
/// <param name="column">
/// The column configuration the added column is to have.
/// </param>
/// <param name="projection">
/// The projection the added column is to have.
/// </param>
/// <param name="collectionProvider">
/// The collection provider for the column.
/// </param>
/// <returns>
/// The builder instance.
/// </returns>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="collectionProvider"/> is <c>null</c>.
/// - or -
/// <paramref name="column"/> is <c>null</c>.
/// - or -
/// <paramref name="projection"/> is <c>null</c>.
/// - or -
/// <paramref name="self"/> is <c>null</c>.
/// </exception>
public static ITableBuilderWithRowCount AddHierarchicalColumn <T>(
this ITableBuilderWithRowCount self,
ColumnConfiguration column,
IProjection <int, T> projection,
ICollectionInfoProvider <T> collectionProvider)
{
Guard.NotNull(self, nameof(self));
Guard.NotNull(projection, nameof(projection));
Guard.NotNull(collectionProvider, nameof(collectionProvider));
return(self.AddColumn(new HierarchicalDataColumn <T>(column, projection, collectionProvider)));
}
/// <summary>
/// Replaces the column in the builder with a new column
/// using the given projection. The current columns configuration
/// is used on the new column. If the old column does not exist,
/// then a new column is simply added.
/// </summary>
/// <typeparam name="T">
/// The <see cref="Type"/> of data in the column
/// </typeparam>
/// <param name="self">
/// The builder instance.
/// </param>
/// <param name="old">
/// The column to replace.
/// </param>
/// <param name="newProjection">
/// The projection that the replacement column should have.
/// </param>
/// <returns>
/// The builder instance.
/// </returns>
/// <exception cref="System.ArgumentException">
/// <paramref name="newProjection"/> is <c>null</c>.
/// - or -
/// <paramref name="old"/> is <c>null</c>.
/// - or -
/// <paramref name="self"/> is <c>null</c>.
/// </exception>
public static ITableBuilderWithRowCount ReplaceColumn <T>(
this ITableBuilderWithRowCount self,
IDataColumn old,
IProjection <int, T> newProjection)
{
Guard.NotNull(self, nameof(self));
Guard.NotNull(old, nameof(old));
Guard.NotNull(newProjection, nameof(newProjection));
var newColumn = new BaseDataColumn <T>(old.Configuration, newProjection);
return(self.ReplaceColumn(old, newColumn));
}
/// <summary>
/// Tries to get the column that satisfies the given predicate from the builder.
/// This method will return the first column found that matches the predicate.
/// </summary>
/// <typeparam name="T">
/// The <see cref="Type"/> of data projected by the column.
/// </typeparam>
/// <param name="self">
/// The builder instance.
/// </param>
/// <param name="predicate">
/// The predicate to use to search for columns.
/// </param>
/// <returns>
/// The column, if it exists; <c>null</c> otherwise.
/// </returns>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="self"/> is <c>null</c>.
/// - or -
/// <paramref name="predicate"/> is <c>null</c>.
/// </exception>
public static IDataColumn <T> GetColumnOrNull <T>(
this ITableBuilderWithRowCount self,
Func <IDataColumn <T>, bool> predicate)
{
Guard.NotNull(self, nameof(self));
Guard.NotNull(predicate, nameof(predicate));
foreach (var column in self.Columns)
{
if (column is IDataColumn <T> castedColumn)
{
if (predicate(castedColumn))
{
return(castedColumn);
}
}
}
return(null);
}
internal static void BuildMetadataTable(ITableBuilder tableBuilder, LTTngSourceParser sourceParser, ITableConfigurationsSerializer serializer)
{
ITableBuilderWithRowCount table = tableBuilder.SetRowCount(sourceParser.TraceStats.Count);
IReadOnlyList <string> eventNames = sourceParser.TraceStats.Keys.ToList();
var eventNameProjection = Projection.CreateUsingFuncAdaptor(x => eventNames[x]);
var traceStatsProjection = eventNameProjection.Compose(eventName => sourceParser.TraceStats[eventName]);
var eventCountProjection = traceStatsProjection.Compose(traceStats => traceStats.EventCount);
var payloadBitCountProjection = traceStatsProjection.Compose(traceStats => (double)traceStats.PayloadBitCount / 8);
table.AddColumn(
new DataColumn <string>(
EventNameConfiguration,
eventNameProjection));
table.AddColumn(
new DataColumn <ulong>(
CountConfiguration,
eventCountProjection));
table.AddColumn(
new DataColumn <double>(
TotalPayloadSizeConfiguration,
payloadBitCountProjection));
var configurations = TableConfigurations.GetPrebuiltTableConfigurations(
typeof(TraceStatsTable),
TableDescriptor.Guid,
serializer);
foreach (var configuration in configurations)
{
tableBuilder.AddTableConfiguration(configuration);
if (StringComparer.Ordinal.Equals(configuration.Name, configurations.DefaultConfigurationName))
{
tableBuilder.SetDefaultTableConfiguration(configuration);
}
}
}
public static bool TestRowTypesMatchColTypes(ITableBuilderWithRowCount tbr, int rowNumber)
{
for (var i = 0; i < tbr.Columns.Count; i++)
{
var col = tbr.Columns.ElementAt(i);
try
{
var projResult = col.Project(rowNumber);
if (projResult != null)
{
var projResultType = projResult.GetType();
throw new InvalidDataException($"Column DataType {col.DataType} does not match projected type {projResultType}");
}
}
catch (Exception)
{
}
}
return(true);
}