/// <summary>
/// Populates a Dynamic List by executing the query it specifies.
/// </summary>
/// <param name="dynamicList">The Dynamic List which specifies the query and is to be populated.</param>
/// <param name="localization">The context Localization.</param>
public void PopulateDynamicList(DynamicList dynamicList, Localization localization)
{
using (new Tracer(dynamicList, localization))
{
SimpleBrokerQuery simpleBrokerQuery = dynamicList.GetQuery(localization) as SimpleBrokerQuery;
if (simpleBrokerQuery == null)
{
throw new DxaException($"Unexpected result from {dynamicList.GetType().Name}.GetQuery: {dynamicList.GetQuery(localization)}");
}
BrokerQuery brokerQuery = new BrokerQuery(simpleBrokerQuery);
string[] componentUris = brokerQuery.ExecuteQuery().ToArray();
Log.Debug($"Broker Query returned {componentUris.Length} results. HasMore={brokerQuery.HasMore}");
if (componentUris.Length > 0)
{
Type resultType = dynamicList.ResultType;
ComponentMetaFactory componentMetaFactory = new ComponentMetaFactory(localization.GetCmUri());
dynamicList.QueryResults = componentUris
.Select(c => ModelBuilderPipeline.CreateEntityModel(CreateEntityModelData(componentMetaFactory.GetMeta(c)), resultType, localization))
.ToList();
}
dynamicList.HasMore = brokerQuery.HasMore;
}
}
/// <summary>
/// Populates a Dynamic List by executing the query it specifies.
/// </summary>
/// <param name="dynamicList">The Dynamic List which specifies the query and is to be populated.</param>
/// <param name="localization">The context Localization.</param>
public override void PopulateDynamicList(DynamicList dynamicList, Localization localization)
{
using (new Tracer(dynamicList, localization))
{
SimpleBrokerQuery simpleBrokerQuery = dynamicList.GetQuery(localization) as SimpleBrokerQuery;
if (simpleBrokerQuery == null)
{
throw new DxaException($"Unexpected result from {dynamicList.GetType().Name}.GetQuery: {dynamicList.GetQuery(localization)}");
}
// get our cursor indexer for this list
var cursors = CursorIndexer.GetCursorIndexer(dynamicList.Id);
// given our start index into the paged list we need to translate that to a cursor
int start = simpleBrokerQuery.Start;
simpleBrokerQuery.Cursor = cursors[start];
// the cursor retrieved may of came from a different start index so we update start
int startIndex = cursors.StartIndex;
simpleBrokerQuery.Start = startIndex;
dynamicList.Start = startIndex;
var cachedDynamicList = SiteConfiguration.CacheProvider.GetOrAdd(
$"PopulateDynamicList-{dynamicList.Id}-{simpleBrokerQuery.GetHashCode()}", // key
CacheRegions.BrokerQuery,
() =>
{
var brokerQuery = new GraphQLQueryProvider();
var components = brokerQuery.ExecuteQueryItems(simpleBrokerQuery).ToList();
Log.Debug($"Broker Query returned {components.Count} results. HasMore={brokerQuery.HasMore}");
if (components.Count > 0)
{
Type resultType = dynamicList.ResultType;
dynamicList.QueryResults = components
.Select(
c =>
ModelBuilderPipeline.CreateEntityModel(
CreateEntityModelData((Component)c), resultType,
localization))
.ToList();
}
dynamicList.HasMore = brokerQuery.HasMore;
if (brokerQuery.HasMore)
{
// update cursor
cursors[simpleBrokerQuery.Start + simpleBrokerQuery.PageSize] = brokerQuery.Cursor;
}
return(dynamicList);
});
dynamicList.QueryResults = cachedDynamicList.QueryResults;
dynamicList.HasMore = cachedDynamicList.HasMore;
}
}
