GetLedgerEntryForRecipientRequest.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / infocard / Service / managed / Microsoft / InfoCards / GetLedgerEntryForRecipientRequest.cs / 1 / GetLedgerEntryForRecipientRequest.cs

                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace Microsoft.InfoCards
{ 
    using System;
    using System.IO; 
    using System.Text; 
    using System.Collections;
    using System.Collections.Generic; 

    using Microsoft.InfoCards.Diagnostics;
    using IDT = Microsoft.InfoCards.Diagnostics.InfoCardTrace;
 
    //
    // Summary: 
    // This class handles the request from the UI Agent to get the Ledger information 
    // for a specific recipient.
    // 

    class GetLedgerEntryForRecipientRequest : UIAgentRequest
    {
        Uri             m_cardId; 
        string          m_recipientId;
        byte[]          m_bytes; 
 
        //
        // Summary: 
        //  Constructs a new SetUserPreferenceRequest instance.
        //
        // Parameters:
        //  rpcHandle    - Handle to the RPC call from the UI Agent 
        //  inArgs       - Stream for the incoming information. Null in this case.
        //  outArgs      - Stream used to collect the outbound data. 
        //  parent       - Client UI Request. 
        //
        public GetLedgerEntryForRecipientRequest( IntPtr rpcHandle, Stream inArgs, Stream outArgs, ClientUIRequest parent ) 
            : base( rpcHandle, inArgs, outArgs, parent )
        {
        }
 
        //
        // Summary 
        //  Event for marshalling the request information 
        //
        protected override void OnMarshalInArgs() 
        {
            IDT.Assert( InArgs.Length > 0, "The user preferences must be specified" );

            BinaryReader br = new InfoCardBinaryReader( InArgs, Encoding.Unicode ); 

            m_cardId = Utility.DeserializeUri( br ); 
            m_recipientId = Utility.DeserializeString( br ); 

        } 

        //
        // Summary
        //  Event for processing the user request 
        //
        protected override void OnProcess() 
        { 
            IDT.Assert( null != m_cardId, "The card Id must not be null" );
            IDT.Assert( false == String.IsNullOrEmpty( m_recipientId ), "The thumbPrint must be specified" ); 

            List paramList = new List();

            QueryParameter query = new QueryParameter( SecondaryIndexDefinition.ObjectTypeIndex, 
                                                      (Int32)StorableObjectType.LedgerEntry );
 
            paramList.Add( query ); 
            query = new QueryParameter( SecondaryIndexDefinition.ParentIdIndex, GlobalId.DeriveFrom( m_cardId.ToString() ) );
 
            paramList.Add( query );
            paramList.Add( new QueryParameter( SecondaryIndexDefinition.RecipientIdIndex, m_recipientId ) );

            StoreConnection connection = StoreConnection.GetConnection(); 
            try
            { 
 
                //
                // There should be only one row of this type for each recipient. So just return the first one. 
                //
                DataRow row = connection.GetSingleRow( paramList.ToArray() );
                if( null != row )
                { 
                    m_bytes = row.GetDataField();
                } 
            } 
            finally
            { 
                connection.Close();
            }
        }
 
        //
        // Summary 
        //  Event for marshalling the response information 
        //
        // Remarks 
        //  Write nothing if the ledger entry is not found.
        //
        protected override void OnMarshalOutArgs()
        { 
            if( null != m_bytes )
            { 
                OutArgs.Write( m_bytes, 0, m_bytes.Length ); 
            }
        } 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
                        

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