private static List <Expression <Func <Workflow, bool> > > GetCriterias(
WorkflowSearchPagingParameters pagingParameters
)
{
List <Expression <Func <Workflow, bool> > > criterias
= new List <Expression <Func <Workflow, bool> > >();
if (pagingParameters.HasType)
{
criterias.Add(w => w.Type.ToLower()
.StartsWith(pagingParameters.Type.ToLower()));
}
if (pagingParameters.HasCorrelationId)
{
criterias.Add(
w => w.CorrelationId == pagingParameters.CorrelationId);
}
if (pagingParameters.HasAssignee)
{
criterias.Add(w => w.Assignee.ToLower()
.StartsWith(pagingParameters.Assignee.ToLower()));
}
return(criterias);
}
public async Task <PaginatedList <WorkflowDto> > GetWorkflowsAsync(
WorkflowSearchPagingParameters pagingParameters
)
{
var count = await this.repository.CountAsync(new WorkflowCount());
IReadOnlyList <Workflow> instances = null;
if (pagingParameters.HasValues)
{
instances = await this.repository
.ListAsync(new WorkflowInstancesFilterAndOrderedPaginated(
pagingParameters
));
}
else
{
instances = await this.repository
.ListAsync(new WorkflowInstancesOrderedPaginated(
pagingParameters.SkipCount,
pagingParameters.PageSize
));
}
var items = instances.Select(i => this.ToWorkflowDto(i));
return(new PaginatedList <WorkflowDto>(
items,
count,
pagingParameters.PageIndex,
pagingParameters.PageSize
));
}
public WorkflowInstancesFilterAndOrderedPaginated(
WorkflowSearchPagingParameters pagingParameters
) : base()
{
var criterias = GetCriterias(pagingParameters);
foreach (var criteria in criterias)
{
this.AddCriteria(criteria);
}
this.ApplyOrderByDescending(w => w.Id);
this.ApplyPaging(pagingParameters.SkipCount, pagingParameters.PageSize);
this.ApplyNoTracking();
}