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113
examples/DancingGoat/Search/ReusableContentItemsIndexingStrategy.cs
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| using CMS.ContentEngine; | ||
| using CMS.Websites; | ||
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| using DancingGoat.Models; | ||
| using DancingGoat.Search.Services; | ||
|
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| using Kentico.Xperience.Lucene.Core; | ||
| using Kentico.Xperience.Lucene.Core.Indexing; | ||
|
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| using Lucene.Net.Documents; | ||
| using Lucene.Net.Facet; | ||
|
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| namespace DancingGoat.Search; | ||
|
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| public class ReusableContentItemsIndexingStrategy : DefaultLuceneIndexingStrategy | ||
| { | ||
| public const string SORTABLE_TITLE_FIELD_NAME = "SortableTitle"; | ||
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| private readonly IWebPageQueryResultMapper webPageMapper; | ||
| private readonly IContentQueryExecutor queryExecutor; | ||
| private readonly IWebPageUrlRetriever urlRetriever; | ||
| private readonly WebScraperHtmlSanitizer htmlSanitizer; | ||
| private readonly WebCrawlerService webCrawler; | ||
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| public const string FACET_DIMENSION = "ContentType"; | ||
| public const string INDEXED_WEBSITECHANNEL_NAME = "DancingGoatPages"; | ||
| public const string CRAWLER_CONTENT_FIELD_NAME = "Content"; | ||
|
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| public ReusableContentItemsIndexingStrategy( | ||
| IWebPageQueryResultMapper webPageMapper, | ||
| IContentQueryExecutor queryExecutor, | ||
| IWebPageUrlRetriever urlRetriever, | ||
| WebScraperHtmlSanitizer htmlSanitizer, | ||
| WebCrawlerService webCrawler | ||
| ) | ||
| { | ||
| this.urlRetriever = urlRetriever; | ||
| this.webPageMapper = webPageMapper; | ||
| this.queryExecutor = queryExecutor; | ||
| this.htmlSanitizer = htmlSanitizer; | ||
| this.webCrawler = webCrawler; | ||
| } | ||
|
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| public override async Task<Document?> MapToLuceneDocumentOrNull(IIndexEventItemModel item) | ||
| { | ||
| var document = new Document(); | ||
|
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| string sortableTitle = string.Empty; | ||
| string title = string.Empty; | ||
| string content = string.Empty; | ||
|
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| // IIndexEventItemModel could be a reusable content item or a web page item, so we use | ||
| // pattern matching to get access to the web page item specific type and fields | ||
| if (item is not IndexEventReusableItemModel indexedItem) | ||
| { | ||
| return null; | ||
| } | ||
|
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| if (!string.Equals(item.ContentTypeName, Banner.CONTENT_TYPE_NAME, StringComparison.OrdinalIgnoreCase)) | ||
| { | ||
| return null; | ||
| } | ||
|
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| var query = new ContentItemQueryBuilder() | ||
| .ForContentType(HomePage.CONTENT_TYPE_NAME, | ||
| config => | ||
| config | ||
| .WithLinkedItems(4) | ||
| // Because the changedItem is a reusable content item, we don't have a website channel name to use here | ||
| // so we use a hardcoded channel name. | ||
| .ForWebsite(INDEXED_WEBSITECHANNEL_NAME) | ||
| // Retrieves all HomePages that link to the Banner through the HomePage.HomePageBanner field | ||
| .Linking(nameof(HomePage.HomePageBanner), new[] { indexedItem.ItemID })) | ||
| .InLanguage(indexedItem.LanguageName); | ||
|
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| var associatedWebPageItem = (await queryExecutor.GetWebPageResult(query, webPageMapper.Map<HomePage>)).First(); | ||
| string url = string.Empty; | ||
| try | ||
| { | ||
| url = (await urlRetriever.Retrieve(associatedWebPageItem.SystemFields.WebPageItemTreePath, | ||
| INDEXED_WEBSITECHANNEL_NAME, indexedItem.LanguageName)).RelativePath; | ||
| } | ||
| catch (Exception) | ||
| { | ||
| // Retrieve can throw an exception when processing a page update LuceneQueueItem | ||
| // and the page was deleted before the update task has processed. In this case, return no item. | ||
| return null; | ||
| } | ||
|
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| sortableTitle = title = associatedWebPageItem!.HomePageBanner.First().BannerText; | ||
| string rawContent = await webCrawler.CrawlWebPage(associatedWebPageItem!); | ||
| content = htmlSanitizer.SanitizeHtmlDocument(rawContent); | ||
|
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| //If the indexed item is a reusable content item, we need to set the url manually. | ||
| document.Add(new StringField(BaseDocumentProperties.URL, url, Field.Store.YES)); | ||
| document.Add(new TextField(nameof(DancingGoatSearchResultModel.Title), title, Field.Store.YES)); | ||
| document.Add(new StringField(SORTABLE_TITLE_FIELD_NAME, sortableTitle, Field.Store.YES)); | ||
| document.Add(new TextField(CRAWLER_CONTENT_FIELD_NAME, content, Field.Store.NO)); | ||
|
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| return document; | ||
| } | ||
|
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| public override FacetsConfig FacetsConfigFactory() | ||
| { | ||
| var facetConfig = new FacetsConfig(); | ||
|
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| facetConfig.SetMultiValued(FACET_DIMENSION, true); | ||
|
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| return facetConfig; | ||
| } | ||
| } |
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