/// <summary>
/// This method supports the Enterprise Library infrastructure and is not intended to be used directly from your code.
/// Builds a <see cref="TraceListener"/> based on an instance of <see cref="SystemDiagnosticsTraceListenerData"/>.
/// </summary>
/// <remarks>
/// The building process for non Enterprise Library specific <see cref="TraceListener"/>s mimics the creation process used by System.Diagnostics' configuration.
/// </remarks>
/// <seealso cref="TraceListenerCustomFactory"/>
/// <param name="context">The <see cref="IBuilderContext"/> that represents the current building process.</param>
/// <param name="objectConfiguration">The configuration object that describes the object to build. Must be an instance of <see cref="SystemDiagnosticsTraceListenerData"/>.</param>
/// <param name="configurationSource">The source for configuration objects.</param>
/// <param name="reflectionCache">The cache to use retrieving reflection information.</param>
/// <returns>A fully initialized instance of a <see cref="TraceListener"/> subclass.</returns>
public override TraceListener Assemble(IBuilderContext context, TraceListenerData objectConfiguration, IConfigurationSource configurationSource, ConfigurationReflectionCache reflectionCache)
{
BasicCustomTraceListenerData castedObjectConfiguration
= (BasicCustomTraceListenerData)objectConfiguration;
Type type = castedObjectConfiguration.Type;
string name = castedObjectConfiguration.Name;
TraceOptions traceOutputOptions = castedObjectConfiguration.TraceOutputOptions;
string initData = castedObjectConfiguration.InitData;
NameValueCollection attributes = castedObjectConfiguration.Attributes;
TraceListener traceListener = null;
if (String.IsNullOrEmpty(initData))
{
ConstructorInfo defaultConstructor = type.GetConstructor(Type.EmptyTypes);
if (defaultConstructor != null)
{
traceListener = (TraceListener)defaultConstructor.Invoke(emptyParameters);
}
else
{
throw new InvalidOperationException(
string.Format(Resources.Culture,
Resources.ExceptionCustomListenerTypeDoesNotHaveDefaultConstructor,
name,
type.FullName));
}
}
else
{
try
{
traceListener = (TraceListener)Activator.CreateInstance(type, initData);
}
catch (MissingMethodException exception)
{
throw new InvalidOperationException(
string.Format(
Resources.Culture,
Resources.ExceptionCustomTraceListenerTypeDoesNotHaveRequiredConstructor,
name,
type.FullName),
exception);
}
}
foreach (string attribute in attributes.Keys)
{
traceListener.Attributes.Add(attribute, attributes.Get(attribute));
}
return(traceListener);
}
public override TraceListener Assemble(IBuilderContext context, TraceListenerData objectConfiguration, IConfigurationSource configurationSource, ConfigurationReflectionCache reflectionCache)
{
BasicCustomTraceListenerData castedObjectConfiguration
= (BasicCustomTraceListenerData)objectConfiguration;
Type type = castedObjectConfiguration.Type;
string name = castedObjectConfiguration.Name;
TraceOptions traceOutputOptions = castedObjectConfiguration.TraceOutputOptions;
string initData = castedObjectConfiguration.InitData;
NameValueCollection attributes = castedObjectConfiguration.Attributes;
return(SystemDiagnosticsTraceListenerCreationHelper.CreateSystemDiagnosticsTraceListener(name, type, initData, attributes));
}