private List <IndexJob> BuildIndexJobs(string tableName, long startRow, long batchSize, long endRow, string indexFilePath)
{
const string BatchFmt = "{0} WHERE [__RowNumber] >= {1} AND [__RowNumber] < {2} ";
StringBuilder selectSqlBase = new StringBuilder();
selectSqlBase.AppendFormat("SELECT TOP {0} * FROM [{1}] WITH (NOLOCK)", endRow, tableName);
bool useBatch = (endRow > batchSize);
string selectSql = null;
List <IndexJob> jobs = new List <IndexJob>();
while (startRow < endRow)
{
if (useBatch)
{
selectSql = string.Format(BatchFmt,
selectSqlBase.ToString(), startRow, startRow + batchSize > endRow ? endRow : startRow + batchSize);
}
else
{
selectSql = selectSqlBase.ToString();
}
DTTableSource dataSource = new DTTableSource(null);
dataSource.TableInfo = new TableInfo(tableName, selectSql, null);
string indexPath = startRow > 1 ? Path.Combine(indexFilePath, startRow.ToString()) : indexFilePath;
IndexJob indexJob = _factory.GetCreateIndexJob(indexPath, dataSource);
jobs.Add(indexJob);
startRow += batchSize;
}
return(jobs);
}
private void DoExecution(IndexJob job, TextBox textBoxStatus)
{
// Monitor the job execution thread as it progresses
IndexProgressInfo status = new IndexProgressInfo();
while (job.IsThreadDone(500, status) == false)
{
// Set the status text based on the current indexing step
switch (status.Step)
{
case IndexingStep.ixStepBegin:
textBoxStatus.Text = "Opening index";
break;
case IndexingStep.ixStepCheckingFiles:
textBoxStatus.Text = "Checking files";
break;
case IndexingStep.ixStepCompressing:
textBoxStatus.Text = "Compressing index";
break;
case IndexingStep.ixStepCreatingIndex:
textBoxStatus.Text = "Creating index";
break;
case IndexingStep.ixStepDone:
textBoxStatus.Text = "Indexing Complete";
break;
case IndexingStep.ixStepMerging:
textBoxStatus.Text = "Merging words into index";
break;
case IndexingStep.ixStepNone:
textBoxStatus.Text = string.Empty;
break;
case IndexingStep.ixStepReadingFiles:
textBoxStatus.Text = status.File.Name;
break;
case IndexingStep.ixStepStoringWords:
textBoxStatus.Text = status.File.Name + " (storing words)";
break;
default:
textBoxStatus.Text = string.Empty;
break;
}
// Let other form events be handled while we're looping
Application.DoEvents();
DTTableSource ds = (DTTableSource)job.DataSourceToIndex;
if (ds != null) // Only applies to Indexing job
{
_textBoxProcessed.Text = ds.RecordProcessed.ToString();
if (_stopRequested)
{
ds.StopRequested = true;
}
}
}
// If there were errors, display the errors as additions to the
// status text
JobErrorInfo err = job.Errors;
for (int i = 0; i < err.Count; i++)
{
textBoxStatus.Text = textBoxStatus.Text + " " + err.Message(i);
}
}
