/// <summary>
/// Persists several execution contexts.
/// </summary>
/// <param name="serializedContexts">a dictionary associating the id of a job or step with its context execution</param>
/// <param name="query">the query to use for persisting the execution contexts in the database</param>
private void PersistSerializedContexts(IDictionary <long?, byte[]> serializedContexts, string query)
{
var parameterSourceProvider = new ExecutionContextParameterSourceProvider(serializedContexts);
DbOperator.BatchUpdate(InsertTablePrefix(query),
serializedContexts.Select(p => parameterSourceProvider.CreateParameterSource(p.Key)).ToList());
}
/// <summary>
/// Writes the items in the database
/// </summary>
/// <param name="items">the items to write</param>
public void Write(IList <T> items)
{
_logger.Debug("Executing batch database writer with {0} items.", items.Count);
if (items.Count == 0)
{
_logger.Warn("Executing batch database writer : empty list of items has been given.");
return;
}
var parameterSources = items.Select(i => DbParameterSourceProvider.CreateParameterSource(i)).ToList();
var updateCounts = _dbOperator.BatchUpdate(Query, parameterSources);
if (AssertUpdates)
{
for (var i = 0; i < updateCounts.Length; i++)
{
if (updateCounts[i] == 0)
{
throw new EmptyUpdateException(string.Format("Item {0} of {1} did not update any rows: [{2}]",
i, updateCounts.Length, items[i]));
}
}
}
}
/// <summary>
/// Persists the step executions in a collection. The step executions must not have been persisted yet.
/// </summary>
/// <param name="stepExecutions">a collection of step executions to persists</param>
public void SaveStepExecutions(ICollection <StepExecution> stepExecutions)
{
Assert.NotNull(stepExecutions, "Attempt to save a null collection of step executions");
using (var scope = new TransactionScope(TransactionScopeOption.Required, TransactionOptions))
{
if (stepExecutions.Count > 0)
{
var parameters = stepExecutions.Select(BuildStepExecutionParameters).ToList();
DbOperator.BatchUpdate(InsertTablePrefix(SaveStepExecutionQuery), parameters);
}
scope.Complete();
}
}
