static void LoadVersionToTablesIndex()
{
m_VersionToTablesIndex = new Dictionary <SoftwareVersion, ITableNames>();
List <Type> types = new List <Type>(Assembly.GetCallingAssembly().GetTypes());
/**
* roll through this assembly (Common) and load and index
* implementers of itablenames with a version attribute
*/
foreach (Type type in types)
{
if (typeof(ITableNames).IsAssignableFrom(type))
{
DatabaseVersionAttribute[] attribs = (DatabaseVersionAttribute[])type.GetCustomAttributes(typeof(DatabaseVersionAttribute), false);
if (attribs.Length > 0)
{
ITableNames names = (type.GetConstructor(new Type[] {})).Invoke(new Object[] {}) as ITableNames;
m_VersionToTablesIndex.Add(((DatabaseVersionAttribute)attribs[0]).Versions[0], names);
}
}
}
}
bool TryLoadAppropriateTableNames(out ITableNames tableNames)
{
/** get the highest version of the database we support */
tableNames = null;
SoftwareVersion highestTablesVersionSupported = new SoftwareVersion();
SoftwareVersion highestDataSourceVersion = Versions.Max();
foreach (SoftwareVersion tableNamesVersion in m_VersionToTablesIndex.Keys)
{
if (highestDataSourceVersion >= tableNamesVersion && tableNamesVersion > highestTablesVersionSupported)
{
highestTablesVersionSupported = tableNamesVersion;
tableNames = m_VersionToTablesIndex[highestTablesVersionSupported];
}
}
if (tableNames == null)
{
tableNames = m_VersionToTablesIndex[m_VersionToTablesIndex.Keys.Min()];
}
return(tableNames != null);
}
public DataSourceCachedInfo(List <SoftwareVersion> versions, ITableNames tableNames)
{
Versions = versions;
TableNames = tableNames;
}
