InfocardExtendedInformationCollection.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 / InfocardExtendedInformationCollection.cs / 1 / InfocardExtendedInformationCollection.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace Microsoft.InfoCards
{ 
    using System;
    using System.Xml; 
    using System.Collections.Generic; 
    using System.Collections;
    using System.Xml.Serialization; 
    using System.Xml.Schema;
    using System.IO;
    using System.Text;
    using Microsoft.InfoCards.Diagnostics; 
    using IDT = Microsoft.InfoCards.Diagnostics.InfoCardTrace;
 
    // 
    // Summary
    //  Additional information contained in the card as part of xs:any 
    //  We store all this information as raw xml. At present we only store
    //  IssuerInformation element as part of this object. In future this
    //  object can be used to store any information which is supplied in the crd file
    // 
    internal class InfocardExtendedInformationCollection : List
    { 
        const Int32 InvalidRow = 0; 

        Uri m_infoCardId; 
        Int32 m_rowId = InvalidRow;

        public InfocardExtendedInformationCollection( Uri infoCardId )
        { 
            if( null == infoCardId )
            { 
                throw IDT.ThrowHelperArgumentNull( "infoCardId" ); 
            }
            m_infoCardId = infoCardId; 
        }


        // 
        // Summary
        // Retrieves the extended information from the store and populates the collection 
        // with it. The InfoCard Id specified in the constructor is used as the parent key. 
        //
        // Parameters 
        // con  - Connection to the store to be used to retrieve the extended information object.
        //
        public void Get( StoreConnection con )
        { 
            if( null == con )
            { 
                throw IDT.ThrowHelperArgumentNull( "con" ); 
            }
 
            IDT.TraceDebug( "Retrieving the issuer information for infocard({0})", m_infoCardId );

            //
            // Find the row for the object from the database, returns null if not exists 
            //
            DataRow row = TryGetRow( con, QueryDetails.FullRow ); 
 
            if( null != row )
            { 
                Deserialize( new MemoryStream( row.GetDataField() ) );

                m_rowId = row.LocalId;
            } 
        }
 
        // 
        // Summary
        //  Serialize the InfocardExtendedInformation object 
        //
        // Parameter
        //   writer - binary stream conforming to the serialization format supported by this class.
        // 
        public void Serialize( System.IO.Stream stream )
        { 
            // 
            // Setup a BinaryWriter to serialize the bytes of each member to the provided stream
            // 
            System.IO.BinaryWriter writer = new BinaryWriter( stream, Encoding.Unicode );

            writer.Write( this.Count );
            for( int i = 0; i < this.Count; i++ ) 
            {
                this[ i ].Serialize( writer ); 
 
            }
 
        }


 
        //
        // Summary 
        //  Deserialize the InfocardExtendedInformation object 
        //
        // Parameter 
        //   reader - binary stream conforming to the serialization format supported by this class.
        //
        public void Deserialize( System.IO.Stream stream )
        { 
            System.IO.BinaryReader reader = new BinaryReader( stream, Encoding.Unicode );
            int count = reader.ReadInt32(); 
            for( int i = 0; i < count; i++ ) 
            {
                InfocardExtendedInformationEntry entry = new InfocardExtendedInformationEntry(); 
                entry.Deserialize( reader );
                this.Add( entry );
            }
 
        }
 
 
        //
        // Summary 
        // Writes a serialized collection of InfocardExtendedInformation objects to the
        // store.
        //
        // Remarks 
        // The parentId index field is set to the Id of the associated InfoCard.
        // 
        // Parameters 
        // con        - Connection to the store to be used to store the extended information object.
        // 
        public void Save( StoreConnection con )
        {
            if( null == con )
            { 
                throw IDT.ThrowHelperArgumentNull( "con" );
            } 
 
            //
            // Write the extended information to the store associated 
            // this collection with the infocard id specified.
            //
            IDT.TraceDebug( "Saving the claims collection..." );
            IDT.TraceDebug( ToString() ); 

            // 
            // Try and get the database header information to 
            // see if this is an insert or update.
            // 
            // Note: The datafield is not part of the projection
            // in order to avoid unnecessary decryption.
            //
            DataRow row = TryGetRow( con, QueryDetails.FullHeader ); 

            if( null == row ) 
            { 
                row = new DataRow();
                row.ObjectType = (Int32)StorableObjectType.InfocardExtendedInformation; 
                row.GlobalId = Guid.NewGuid();
            }

            // 
            // Populate the parentId index field
            // 
            row.SetIndexValue( SecondaryIndexDefinition.ParentIdIndex, 
                 GlobalId.DeriveFrom( m_infoCardId.ToString() ) );
 
            //
            // Populate the data object
            //
            MemoryStream ms = new MemoryStream(); 
            Serialize( ms );
            row.SetDataField( ms.ToArray() ); 
 
            //
            // Save the row to the database 
            //
            con.Save( row );

            // 
            // Update the row id in the object in case
            // this was an insert. 
            // 
            m_rowId = row.LocalId;
        } 


        public string GetIssuerInformationElement()
        { 
            for( int i = 0; i < this.Count; i++ )
            { 
                XmlReader reader = InfoCardSchemas.CreateReader( this[ i ].GetXml() ); 
                reader.Read();
                if( reader.IsStartElement( XmlNames.WSIdentity07.IssuerInformation, XmlNames.WSIdentity07.Namespace ) ) 
                {
                    reader.Close();
                    return this[ i ].GetXml();
                } 
                reader.Close();
            } 
            return string.Empty; 

        } 
        //
        // Summary
        // Queries the store for the claims object associated with the InfoCard Id
        // currently in m_infoCardId. 
        //
        // Remarks 
        // This function will return null if no object is found in the store. 
        //
        // Parameters 
        // con      - Connection to the store to be used to find the claims collection object.
        // details  - The projection of the store information to be returned.
        //
        protected DataRow TryGetRow( StoreConnection con, QueryDetails details ) 
        {
            IDT.Assert( null != m_infoCardId, "null infocard id" ); 
 
            //
            // Retrieve a single object from the database 
            //
            DataRow row =
                con.GetSingleRow( details,
                           new QueryParameter( SecondaryIndexDefinition.ObjectTypeIndex, 
                           (Int32)StorableObjectType.InfocardExtendedInformation ),
                           new QueryParameter( SecondaryIndexDefinition.ParentIdIndex, 
                           GlobalId.DeriveFrom( m_infoCardId.ToString() ) ) ); 

            return row; 
        }


    } 

 
 
}

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

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