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//------------------------------------------------------------------------------
// <copyright file="StateMachineStateQueryElement.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.ServiceModel.Activities.Tracking.Configuration
{
using System.Activities.Tracking;
using System.Configuration;
using System.Diagnostics.CodeAnalysis;
using System.Runtime;
/// <summary>
/// Configure StateMachineStateQuery element in DotNetConfig.xsd.
/// </summary>
[Fx.Tag.XamlVisible(false)]
public class StateMachineStateQueryElement : TrackingQueryElement
{
// NOTE: this string is implicitly dependancy on StateMachineTrackingRecord.StateMachineStateRecordName
// The value should not be updated without updating the referenced location too.
private static readonly string StateMachineStateRecordName = "System.Activities.Statements.StateMachine";
private ConfigurationPropertyCollection properties;
/// <summary>
/// Gets or sets the Activity name filter attribute in StateMachineTrackingQuery element.
/// </summary>
[ConfigurationProperty(TrackingConfigurationStrings.ActivityName, IsKey = true,
DefaultValue = TrackingConfigurationStrings.StarWildcard)]
[StringValidator(MinLength = 1)]
[SuppressMessage(FxCop.Category.Configuration, FxCop.Rule.ConfigurationValidatorAttributeRule,
MessageId = "System.ServiceModel.Activities.Tracking.Configuration.UserTrackingQueryElement.ActivityName",
Justification = "StringValidator verifies minimum size")]
public string ActivityName
{
get
{
return (string)base[TrackingConfigurationStrings.ActivityName];
}
set
{
base[TrackingConfigurationStrings.ActivityName] = value;
}
}
/// <summary>
/// Gets the attributes in StateMachineTrackingQuery element.
/// </summary>
protected override ConfigurationPropertyCollection Properties
{
get
{
if (this.properties == null)
{
ConfigurationPropertyCollection properties = base.Properties;
properties.Add(new ConfigurationProperty(
TrackingConfigurationStrings.ActivityName,
typeof(string),
"*",
null,
new StringValidator(1, int.MaxValue, null),
System.Configuration.ConfigurationPropertyOptions.IsKey));
this.properties = properties;
}
return this.properties;
}
}
/// <summary>
/// Creates a StateMachine-specific CustomTrackingQuery, if the user specifies StateMachineTrackingQuery element in app.config.
/// </summary>
/// <returns>
/// A CustomTrackingQuery instance that tracks StateMachine specific TrackingRecord.
/// </returns>
protected override TrackingQuery NewTrackingQuery()
{
// NOTE: to avoid a strict dependency over System.Activities.Statements.dll
// we rely on the fact that StateMachineTrackingQuery is
// derived from CustomTrackingQuery and is only a
// CustomTrackingQuery instance with a specific name.
// Therefore, this method would essentially create a StateMachineTrackingQuery instance.
return new CustomTrackingQuery
{
Name = StateMachineStateRecordName,
ActivityName = this.ActivityName
};
}
}
}
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