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Places active layer IDs into a LazyField in order to prevent evaluation multiple times per request

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This commit is contained in:
paynecrl97
2015-06-17 16:27:29 +01:00
parent bde7d900c0
commit 0bd279cc89
1 changed files with 15 additions and 5 deletions
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20
src/Orchard.Web/Modules/Orchard.Widgets/Services/DefaultLayerEvaluationService.cs
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@@ -4,18 +4,24 @@ using Orchard.Localization;
using Orchard.Logging;
using Orchard.Widgets.Models;
using Orchard.ContentManagement;
using Orchard.Core.Common.Utilities;
namespace Orchard.Widgets.Services{
public class DefaultLayerEvaluationService : ILayerEvaluationService {
private readonly IRuleManager _ruleManager;
private readonly IOrchardServices _orchardServices;
private readonly LazyField<IEnumerable<int>> _activeLayerIDs;
public DefaultLayerEvaluationService(IRuleManager ruleManager, IOrchardServices orchardServices) {
_ruleManager = ruleManager;
_orchardServices = orchardServices;
Logger = NullLogger.Instance;
T = NullLocalizer.Instance;
_activeLayerIDs = new LazyField<IEnumerable<int>>();
_activeLayerIDs.Loader(PopulateActiveLayers);
}
public ILogger Logger { get; set; }
@@ -27,21 +33,25 @@ namespace Orchard.Widgets.Services{
/// <returns>
/// A collection of integers that represents the Ids of each active Layer
/// </returns>
public IEnumerable<int> GetActiveLayerIds(){
public IEnumerable<int> GetActiveLayerIds() {
return _activeLayerIDs.Value;
}
private IEnumerable<int> PopulateActiveLayers() {
// Once the Rule Engine is done:
// Get Layers and filter by zone and rule
// NOTE: .ForType("Layer") is faster than .Query<LayerPart, LayerPartRecord>()
var activeLayers = _orchardServices.ContentManager.Query<LayerPart>().ForType("Layer").List();
var activeLayerIds = new List<int>();
foreach (var activeLayer in activeLayers){
foreach (var activeLayer in activeLayers) {
// ignore the rule if it fails to execute
try{
if (_ruleManager.Matches(activeLayer.LayerRule)){
try {
if (_ruleManager.Matches(activeLayer.LayerRule)) {
activeLayerIds.Add(activeLayer.ContentItem.Id);
}
}
catch (Exception e){
catch (Exception e) {
Logger.Warning(e, T("An error occurred during layer evaluation on: {0}", activeLayer.Name).Text);
}
}