/// <summary>
/// Executes a query for the specified objects
/// </summary>
public IEnumerable <AuditData> Query(Expression <Func <AuditData, bool> > query, int offset, int?count, out int totalCount, IPrincipal overrideAuthContext = null, params ModelSort <AuditData>[] orderBy)
{
var preEvtData = new QueryRequestEventArgs <AuditData>(query, offset: offset, count: count, queryId: null, principal: overrideAuthContext);
this.Querying?.Invoke(this, preEvtData);
if (preEvtData.Cancel)
{
this.m_traceSource.TraceWarning("Pre-event handler for query indicates cancel : {0}", query);
totalCount = 0;
return(null);
}
try
{
using (var context = this.m_configuration.Provider.GetReadonlyConnection())
{
context.Open();
var sql = this.m_builder.CreateQuery(query).Build();
if (orderBy != null && orderBy.Length > 0)
{
foreach (var ob in orderBy)
{
sql = sql.OrderBy <DbAuditData>(this.m_mapper.MapModelExpression <AuditData, DbAuditData, dynamic>(ob.SortProperty), ob.SortOrder);
}
}
else
{
sql = sql.OrderBy <DbAuditData>(o => o.Timestamp, SortOrderType.OrderByDescending);
}
// Total results
totalCount = context.Count(sql);
// Query control
if (count.GetValueOrDefault() == 0)
{
sql.Offset(offset).Limit(100);
}
else
{
sql.Offset(offset).Limit(count.Value);
}
sql = sql.Build();
var itm = context.Query <CompositeResult <DbAuditData, DbAuditCode> >(sql).ToList();
AuditUtil.AuditAuditLogUsed(ActionType.Read, OutcomeIndicator.Success, sql.ToString(), itm.Select(o => o.Object1.Key).ToArray());
var results = itm.Select(o => this.ToModelInstance(context, o)).ToList().AsQueryable();
// Event args
var postEvtArgs = new QueryResultEventArgs <AuditData>(query, results, offset, count, totalCount, null, overrideAuthContext);
this.Queried?.Invoke(this, postEvtArgs);
return(postEvtArgs.Results);
}
}
catch (Exception e)
{
AuditUtil.AuditAuditLogUsed(ActionType.Read, OutcomeIndicator.EpicFail, query.ToString());
this.m_traceSource.TraceError("Could not query audit {0}: {1}", query, e);
throw;
}
}
