ImportFileRequest.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / infocard / Service / managed / Microsoft / InfoCards / ImportFileRequest.cs / 1 / ImportFileRequest.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace Microsoft.InfoCards
{ 
    using System;
    using System.Collections; 
    using System.IO; 
    using System.Collections.Generic;
    using IDT = Microsoft.InfoCards.Diagnostics.InfoCardTrace; 

    //
    // Import a set of cards to the store:
    //  Saves a list of cards into the store and implements the overwrite logic for roaming 
    //
    class ImportFileRequest :UIAgentRequest 
    { 

        public ImportFileRequest( IntPtr rpcHandle, Stream inArgs, Stream outArgs, ClientUIRequest parent ) 
            : base( rpcHandle, inArgs, outArgs, parent )
        {
        }
 

        // 
        // Summary 
        // Read the cards to be imported
        // 
        protected override void OnMarshalInArgs()
        {
        }
 
        //
        // Summary 
        // Save the cards to the store. If a card already exists 
        // in the store, then the last card to be updated wins.
        // 
        protected override void OnProcess()
        {
            RoamingStoreFile roamingFile = ParentRequest.GetContext();
 
            if( null != roamingFile && null != roamingFile.Cards )
            { 
                try 
                {
                    StoreConnection connection = StoreConnection.GetConnection(); 
                    try
                    {
                        connection.BeginTransaction();
 
                        try
                        { 
                            foreach ( InfoCard card in roamingFile.Cards  ) 
                            {
                                // 
                                // check if the card needs to be overwritten
                                // The default overwrite logic overwrites the card based on time of last update
                                //
                                List param = new List(); 
                                param.Add( new QueryParameter(
                                                     SecondaryIndexDefinition.ObjectTypeIndex, 
                                                     ( Int32 )StorableObjectType.InfoCard ) ); 
                                param.Add( new QueryParameter(
                                                    SecondaryIndexDefinition.GlobalIdIndex, 
                                                    GlobalId.DeriveFrom( card.Id.ToString() ) ) );

                                DataRow row = connection.GetSingleRow( QueryDetails.FullRow, param.ToArray() );
 
                                //
                                // If a card exists, compare the LastUpdate time 
                                // 
                                if ( null != row )
                                { 
                                    using ( MemoryStream ms = new MemoryStream( row.GetDataField() ) )
                                    {
                                        InfoCard existingCard = new InfoCard( ms );
                                        if ( existingCard.LastUpdate < card.LastUpdate ) 
                                        {
                                            IDT.TraceDebug( "Overwrite the existing card with id {0}", card.Id.AbsoluteUri ); 
                                            card.IsImported = true; 
                                            card.InstalledOn = DateTime.Now;
                                            card.Save( connection ); 
                                        }
                                    }
                                }
                                else 
                                {
                                    IDT.TraceDebug( "Add a new card with id {0} to the store", card.Id.AbsoluteUri ); 
                                    card.IsImported = true; 
                                    card.InstalledOn = DateTime.Now;
                                    card.Save( connection ); 
                                }
                            }
                            connection.CommitTransaction();
                            AuditLog.AuditStoreImport(); 
                        }
                        catch( Exception e ) 
                        { 
                            connection.RollbackTransaction();
                            if( IDT.IsFatal( e ) ) 
                            {
                                throw;
                            }
                            throw IDT.ThrowHelperError( 
                                new ImportStoreException( SR.GetString( SR.InvalidImportFile ), e ) );
                        } 
                    } 
                    finally
                    { 
                        connection.Close();
                    }
                }
                finally 
                {
                    // 
                    // Clear the roaming store file on completion. 
                    //
                    roamingFile.Clear(); 
                }
            }
        }
 
        protected override void OnMarshalOutArgs()
        { 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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ImportFileRequest.cs source code in C# .NET

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