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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Configuration
{
using System;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Configuration;
using System.Diagnostics.CodeAnalysis;
using System.Reflection;
using System.Runtime;
using System.ServiceModel.Description;
using System.ServiceModel.Persistence;
using System.Workflow.Runtime;
using System.Xml;
[Obsolete("The WF3 types are deprecated. Instead, please use the new WF4 types from System.Activities.*")]
public class PersistenceProviderElement : BehaviorExtensionElement
{
const string persistenceOperationTimeoutParameter = "persistenceOperationTimeout";
const string typeParameter = "type";
int argumentsHash;
NameValueCollection persistenceProviderArguments;
public PersistenceProviderElement()
{
this.persistenceProviderArguments = new NameValueCollection();
this.argumentsHash = this.ComputeArgumentsHash();
}
// This property is not supposed to be exposed in config.
[SuppressMessage("Configuration", "Configuration102:ConfigurationPropertyAttributeRule")]
public override Type BehaviorType
{
get { return typeof(PersistenceProviderBehavior); }
}
[ConfigurationProperty(
persistenceOperationTimeoutParameter,
IsRequired = false,
DefaultValue = PersistenceProviderBehavior.DefaultPersistenceOperationTimeoutString)]
[TypeConverter(typeof(TimeSpanOrInfiniteConverter))]
[PositiveTimeSpanValidator]
public TimeSpan PersistenceOperationTimeout
{
get { return (TimeSpan) base[persistenceOperationTimeoutParameter]; }
set { base[persistenceOperationTimeoutParameter] = value; }
}
[SuppressMessage("Configuration", "Configuration102:ConfigurationPropertyAttributeRule")]
public NameValueCollection PersistenceProviderArguments
{
get { return this.persistenceProviderArguments; }
}
[ConfigurationProperty(typeParameter, IsRequired = true)]
[StringValidator(MinLength = 0)]
public string Type
{
get { return (string) base[typeParameter]; }
set { base[typeParameter] = value; }
}
protected internal override object CreateBehavior()
{
Fx.Assert(this.PersistenceOperationTimeout > TimeSpan.Zero,
"This should have been guaranteed by the validator on the setter.");
PersistenceProviderFactory providerFactory;
Type providerType = System.Type.GetType((string) base[typeParameter]);
if (providerType == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.PersistenceProviderTypeNotFound)));
}
ConstructorInfo cInfo = providerType.GetConstructor(new Type[] { typeof(NameValueCollection) });
if (cInfo != null)
{
providerFactory = (PersistenceProviderFactory) cInfo.Invoke(new object[] { this.persistenceProviderArguments });
}
else
{
cInfo = providerType.GetConstructor(new Type[] { });
Fx.Assert(cInfo != null,
"The constructor should have been found - this should have been validated elsewhere.");
providerFactory = (PersistenceProviderFactory) cInfo.Invoke(null);
}
return new PersistenceProviderBehavior(providerFactory, this.PersistenceOperationTimeout);
}
protected override bool IsModified()
{
return base.IsModified() || this.argumentsHash != this.ComputeArgumentsHash();
}
protected override bool OnDeserializeUnrecognizedAttribute(string name, string value)
{
persistenceProviderArguments.Add(name, value);
return true;
}
protected override void PostDeserialize()
{
this.argumentsHash = this.ComputeArgumentsHash();
base.PostDeserialize();
}
protected override bool SerializeElement(XmlWriter writer, bool serializeCollectionKey)
{
bool result;
if (writer != null)
{
foreach (string key in this.persistenceProviderArguments.AllKeys)
{
writer.WriteAttributeString(key, this.persistenceProviderArguments[key]);
}
result = base.SerializeElement(writer, serializeCollectionKey);
result |= this.persistenceProviderArguments.Count > 0;
this.argumentsHash = this.ComputeArgumentsHash();
}
else
{
result = base.SerializeElement(writer, serializeCollectionKey);
}
return result;
}
protected override void Unmerge(ConfigurationElement sourceElement, ConfigurationElement parentElement, ConfigurationSaveMode saveMode)
{
PersistenceProviderElement persistenceProviderElement = (PersistenceProviderElement) sourceElement;
this.persistenceProviderArguments = new NameValueCollection(persistenceProviderElement.persistenceProviderArguments);
this.argumentsHash = persistenceProviderElement.argumentsHash;
base.Unmerge(sourceElement, parentElement, saveMode);
}
int ComputeArgumentsHash()
{
int result = 0;
foreach (string key in this.persistenceProviderArguments.AllKeys)
{
result ^= key.GetHashCode() ^ this.persistenceProviderArguments[key].GetHashCode();
}
return result;
}
}
}
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