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//------------------------------------------------------------------------------
// <copyright file="ConnectionPoolKey.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">Microsoft</owner>
// <owner current="true" primary="false">Microsoft</owner>
//------------------------------------------------------------------------------
namespace System.Data.SqlClient
{
using System;
using System.Collections;
using System.Data.Common;
using System.Diagnostics;
// SqlConnectionPoolKey: Implementation of a key to connection pool groups for specifically to be used for SqlConnection
// Connection string and SqlCredential are used as a key
internal class SqlConnectionPoolKey : DbConnectionPoolKey, ICloneable
{
private SqlCredential _credential;
private int _hashValue;
private readonly string _accessToken;
internal SqlConnectionPoolKey(string connectionString, SqlCredential credential, string accessToken) : base(connectionString)
{
Debug.Assert(_credential == null || _accessToken == null, "Credential and AccessToken can't have the value at the same time.");
_credential = credential;
_accessToken = accessToken;
CalculateHashCode();
}
private SqlConnectionPoolKey(SqlConnectionPoolKey key) : base (key)
{
_credential = key.Credential;
_accessToken = key.AccessToken;
CalculateHashCode();
}
object ICloneable.Clone()
{
return new SqlConnectionPoolKey(this);
}
internal override string ConnectionString
{
get
{
return base.ConnectionString;
}
set
{
base.ConnectionString = value;
CalculateHashCode();
}
}
internal SqlCredential Credential
{
get
{
return _credential;
}
}
internal string AccessToken
{
get
{
return _accessToken;
}
}
public override bool Equals(object obj)
{
SqlConnectionPoolKey key = obj as SqlConnectionPoolKey;
return (key != null && _credential == key._credential && ConnectionString == key.ConnectionString && Object.ReferenceEquals(_accessToken, key._accessToken));
}
public override int GetHashCode()
{
return _hashValue;
}
private void CalculateHashCode()
{
_hashValue = base.GetHashCode();
if (_credential != null)
{
unchecked
{
_hashValue = _hashValue * 17 + _credential.GetHashCode();
}
}
else if (_accessToken != null)
{
unchecked
{
_hashValue = _hashValue * 17 + _accessToken.GetHashCode();
}
}
}
}
}
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