protected override bool DbDatabaseExists(DbConnection connection, int?commandTimeout, StoreItemCollection storeItemCollection)
{
if (connection == null)
{
throw new ArgumentNullException("connection must not be null");
}
if (storeItemCollection == null)
{
throw new ArgumentNullException("storeItemCollection must not be null");
}
SampleConnection sampleConnection = connection as SampleConnection;
if (sampleConnection == null)
{
throw new ArgumentException("connection must be a valid SampleConnection");
}
string databaseName = GetDatabaseName(sampleConnection);
bool exists = false;
UsingMasterConnection(sampleConnection, conn =>
{
StoreVersion storeVersion = StoreVersionUtils.GetStoreVersion(conn);
string databaseExistsScript = DdlBuilder.CreateDatabaseExistsScript(databaseName);
int result = (int)CreateCommand(conn, databaseExistsScript, commandTimeout).ExecuteScalar();
exists = (result == 1);
});
return(exists);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="manifestToken">A token used to infer the capabilities of the store</param>
public SampleProviderManifest(string manifestToken)
: base(SampleProviderManifest.GetProviderManifest())
{
// GetStoreVersion will throw ArgumentException if manifestToken is null, empty, or not recognized.
_version = StoreVersionUtils.GetStoreVersion(manifestToken);
_token = manifestToken;
}
private static void ValidateVersion(string manifestToken)
{
if (string.IsNullOrWhiteSpace(manifestToken))
{
throw new ArgumentException("Could not determine storage version. manifestToken is null or whitespace string.");
}
// GetSqlVersion will throw ArgumentException if manifestToken is null, empty, or not recognized.
StoreVersion storeVersion = StoreVersionUtils.GetStoreVersion(manifestToken);
// SQL spatial support is only available for SQL Server 2008 and later
if (storeVersion < StoreVersion.Sql10)
{
throw new InvalidOperationException("Spatial types and functions are only supported by SQL Server 2008 or later.");
}
}
protected override string GetDbProviderManifestToken(DbConnection connection)
{
if (connection == null)
{
throw new ArgumentException("connection");
}
SampleConnection sampleConnection = connection as SampleConnection;
if (sampleConnection == null)
{
throw new ArgumentException("The connection is not of type 'SampleConnection'.");
}
if (string.IsNullOrEmpty(sampleConnection.ConnectionString))
{
throw new ArgumentException("Could not determine storage version; a valid storage connection or a version hint is required.");
}
bool closeConnection = false;
try
{
if (sampleConnection.State != ConnectionState.Open)
{
sampleConnection.Open();
closeConnection = true;
}
StoreVersion version = StoreVersionUtils.GetStoreVersion(sampleConnection);
if (version == StoreVersion.Sql9)
{
return(SampleProviderManifest.TokenSql9);
}
else
{
return(StoreVersionUtils.GetVersionHint(version));
}
}
finally
{
if (closeConnection)
{
sampleConnection.Close();
}
}
}