258 lines
10 KiB
C#
258 lines
10 KiB
C#
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//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.ServiceModel.Activities
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{
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using System.Activities;
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using System.Activities.Validation;
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using System.ComponentModel;
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using System.Runtime;
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using System.ServiceModel.Channels;
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using System.ServiceModel.Description;
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using System.Windows.Markup;
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[ContentProperty("Message")]
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public sealed class SendMessageContent : SendContent
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{
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public SendMessageContent()
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: base()
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{
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}
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public SendMessageContent(InArgument message)
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: this()
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{
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this.Message = message;
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}
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public SendMessageContent(InArgument message, Type declaredMessageType)
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: this(message)
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{
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this.DeclaredMessageType = declaredMessageType;
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}
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// The value that is sent as the body of the message.
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// The type is derived from Message.Expression.ResultType. If the optional
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// DeclaredMessageType property is also specified, it is validated against
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// Message.Expression.ResultType.
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[DefaultValue(null)]
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public InArgument Message
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{
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get;
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set;
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}
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// Allows the type of the variable specified for Message to be a derived type from the type
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// on the message contract. This type specifies what the type is one the message contract.
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// If DeclaredMessageType is not specified, the type from the Message InArgument is used.
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// The DeclaredMessageType must either be the same as the type of the InArgument Message,
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// or it must be a base type of Message.
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[DefaultValue(null)]
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public Type DeclaredMessageType
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{
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get;
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set;
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}
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internal Type InternalDeclaredMessageType
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{
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get
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{
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if (this.DeclaredMessageType == null && this.Message != null)
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{
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return this.Message.ArgumentType;
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}
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else
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{
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return this.DeclaredMessageType;
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}
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}
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}
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internal override bool IsFault
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{
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get
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{
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if (this.InternalDeclaredMessageType != null)
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{
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return ContractInferenceHelper.ExceptionType.IsAssignableFrom(this.InternalDeclaredMessageType);
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}
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else
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{
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return false;
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}
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}
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}
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[EditorBrowsable(EditorBrowsableState.Never)]
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public bool ShouldSerializeDeclaredMessageType()
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{
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// don't serialize null
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if (this.DeclaredMessageType == null)
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{
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return false;
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}
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// if the expression type of Message matches the declared message type, no need to serialize duplicative information
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if (this.Message != null && this.DeclaredMessageType == this.Message.ArgumentType)
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{
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return false;
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}
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return true;
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}
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internal override void CacheMetadata(ActivityMetadata metadata, Activity owner, string operationName)
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{
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MessagingActivityHelper.FixMessageArgument(this.Message, ArgumentDirection.In, metadata);
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if (this.DeclaredMessageType != null)
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{
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if (this.Message == null && this.DeclaredMessageType != TypeHelper.VoidType)
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{
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string errorOperationName = ContractValidationHelper.GetErrorMessageOperationName(operationName);
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metadata.AddValidationError(SR.ValueCannotBeNull(owner.DisplayName, errorOperationName));
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}
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else if (this.Message != null && !this.DeclaredMessageType.IsAssignableFrom(this.Message.ArgumentType))
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{
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string errorOperationName = ContractValidationHelper.GetErrorMessageOperationName(operationName);
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metadata.AddValidationError(SR.ValueArgumentTypeNotDerivedFromValueType(owner.DisplayName, errorOperationName));
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}
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}
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}
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internal override void ConfigureInternalSend(InternalSendMessage internalSendMessage, out ToRequest requestFormatter)
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{
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if (this.InternalDeclaredMessageType == MessageDescription.TypeOfUntypedMessage)
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{
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// Value is a Message, do not use the formatter but directly pass it to InternalSendMessage
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internalSendMessage.Message = new InArgument<Message>(context => ((InArgument<Message>)this.Message).Get(context));
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requestFormatter = null;
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}
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else
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{
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requestFormatter = new ToRequest();
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if (this.Message != null)
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{
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requestFormatter.Parameters.Add(InArgument.CreateReference(this.Message, "Message"));
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}
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}
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}
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internal override void ConfigureInternalSendReply(InternalSendMessage internalSendMessage, out ToReply responseFormatter)
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{
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if (this.InternalDeclaredMessageType == MessageDescription.TypeOfUntypedMessage)
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{
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internalSendMessage.Message = new InArgument<Message>(context => ((InArgument<Message>)this.Message).Get(context));
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responseFormatter = null;
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}
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else
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{
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responseFormatter = new ToReply();
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// WCF rule dictates that MessageContract must be bound to ReturnValue, not Parameters
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if (MessageBuilder.IsMessageContract(this.InternalDeclaredMessageType))
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{
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responseFormatter.Result = InArgument.CreateReference(this.Message, "Message");
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}
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else if (this.Message != null)
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{
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responseFormatter.Parameters.Add(InArgument.CreateReference(this.Message, "Message"));
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}
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}
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}
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internal override void InferMessageDescription(OperationDescription operation, object owner, MessageDirection direction)
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{
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ContractInferenceHelper.CheckForDisposableParameters(operation, this.InternalDeclaredMessageType);
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string overridingAction = null;
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SerializerOption serializerOption = SerializerOption.DataContractSerializer;
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Send send = owner as Send;
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if (send != null)
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{
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overridingAction = send.Action;
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serializerOption = send.SerializerOption;
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}
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else
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{
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SendReply sendReply = owner as SendReply;
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Fx.Assert(sendReply != null, "The owner of SendMessageContent can only be Send or SendReply!");
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overridingAction = sendReply.Action;
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serializerOption = sendReply.Request.SerializerOption;
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}
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if (direction == MessageDirection.Input)
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{
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ContractInferenceHelper.AddInputMessage(operation, overridingAction, this.InternalDeclaredMessageType, serializerOption);
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}
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else
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{
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ContractInferenceHelper.AddOutputMessage(operation, overridingAction, this.InternalDeclaredMessageType, serializerOption);
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}
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}
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internal override void ValidateContract(NativeActivityContext context, OperationDescription targetOperation, object owner, MessageDirection direction)
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{
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MessageDescription targetMessage;
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string overridingAction;
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bool isResponse;
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SerializerOption serializerOption;
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if (direction == MessageDirection.Input)
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{
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Fx.Assert(targetOperation.Messages.Count >= 1, "There must be at least one MessageDescription in an OperationDescription!");
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targetMessage = targetOperation.Messages[0];
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Send send = owner as Send;
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Fx.Assert(send != null, "The parent of a SendMessageContent with in-message can only be Send!");
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overridingAction = send.Action;
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serializerOption = send.SerializerOption;
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isResponse = false;
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}
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else
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{
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Fx.Assert(targetOperation.Messages.Count == 2, "There must be exactly two MessageDescription objects for a two-way operation!");
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targetMessage = targetOperation.Messages[1];
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SendReply sendReply = owner as SendReply;
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Fx.Assert(sendReply != null, "The parent of a SendMessageContent with out-message can only be SendReply!");
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Fx.Assert(sendReply.Request != null, "SendReply.Request should not be null by now!");
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overridingAction = sendReply.Action;
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serializerOption = sendReply.Request.SerializerOption;
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isResponse = true;
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}
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if (!this.IsFault)
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{
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ContractValidationHelper.ValidateAction(context, targetMessage, overridingAction, targetOperation, isResponse);
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if (ContractValidationHelper.IsSendParameterContent(targetOperation))
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{
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Constraint.AddValidationError(context, new ValidationError(SR.MisuseOfMessageContent(targetOperation.Name, targetOperation.DeclaringContract.Name)));
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}
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else
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{
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ContractValidationHelper.ValidateMessageContent(context, targetMessage, this.InternalDeclaredMessageType,
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serializerOption, targetOperation, isResponse);
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}
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}
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else
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{
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Fx.Assert(this.InternalDeclaredMessageType != null, "IsFault returns true only when argument is of exception type!");
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Type argumentType = this.InternalDeclaredMessageType;
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if (argumentType.IsGenericType && argumentType.GetGenericTypeDefinition() == ContractInferenceHelper.FaultExceptionType)
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{
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Type faultType = argumentType.GetGenericArguments()[0];
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ContractValidationHelper.ValidateFault(context, targetOperation, overridingAction, faultType);
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}
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}
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}
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}
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}
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