/// <summary>
/// Determines whether a new tracking table should be built and catalogued
/// </summary>
/// <param name="schema">The name of the audited schema</param>
/// <param name="tableName">The name of the audited table to check</param>
/// <param name="targetTableColumns">A list of the columns in the audited table</param>
/// <param name="updateParameters">Generator parameters</param>
/// <returns>True of the audited table has different columns (name or type) than the tracking table</returns>
/// <remarks>
/// This routine only checks the column names and data types for a match. A change to indexes, relationships, and keys will not affect
/// the comparison.
/// </remarks>
private static bool NewVersionOfTrackingTableNeeded(string schema, string tableName, ICollection <SchemaDataSet.ColumnsRow> targetTableColumns, AuditUpdateParameters updateParameters)
{
// check whether we even have a tracking table
TrackingTable trackingTable = GenerateTableTracking.GetCurrentTrackingTable(schema, tableName, updateParameters);
if (null == trackingTable)
{
return(true);
}
// get the columns from the tracking table
List <SchemaDataSet.ColumnsRow> trackingTableColumns = GetTrackingColumnsForTable(trackingTable, updateParameters);
// check whether the number of columns match
if (targetTableColumns.Count != trackingTableColumns.Count)
{
return(true);
}
// compare each column
return(AllColumnsMatch(targetTableColumns, trackingTableColumns));
}
internal static TrackingTable GenerateAuditForTable(string schema, string tableName, SchemaDataSet.SchemaPrimaryKeysDataTable primaryKeysDataTable, StringBuilder sqlBuilder, AuditUpdateParameters updateParameters, Action <string, float?> reportProgress)
{
TrackingTable trackingTable;
reportProgress(String.Format("Generating audit for table {0}", tableName), null);
List <SchemaDataSet.ColumnsRow> targetTableColumns = GetAuditedColumnsForTable(schema, tableName, updateParameters);
bool createNewTableVersion = NewVersionOfTrackingTableNeeded(schema, tableName, targetTableColumns, updateParameters);
if (createNewTableVersion)
{
trackingTable = GenerateTableTracking.GenerateNewTrackingTable(schema, tableName, targetTableColumns, updateParameters, sqlBuilder, reportProgress);
}
else
{
trackingTable = GenerateTableTracking.GetCurrentTrackingTable(schema, tableName, updateParameters);
}
GenerateTableTracking.GenerateAuditSupportForTable(schema, tableName, trackingTable, sqlBuilder, targetTableColumns, updateParameters, reportProgress);
GenerateTableTracking.GenerateInstantSupportForTable(schema, tableName, sqlBuilder, updateParameters);
GenerateDelta.CreateDeltaProcedures(schema, tableName, trackingTable, targetTableColumns, sqlBuilder, updateParameters, reportProgress);
reportProgress(String.Format("Generated audit for table {0}", tableName), null);
return(trackingTable);
}
