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/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx35 / System.WorkflowServices / System / ServiceModel / Configuration / PersistenceProviderElement.cs / 1305376 / PersistenceProviderElement.cs
//------------------------------------------------------------ // 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; 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; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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