Web.PublishedCache - introduce contextual caches

src/Umbraco.Web/PublishedCache/ContextualPublishedContentCache.cs

@@ -0,0 +1,90 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Umbraco.Core.Models;
+
+namespace Umbraco.Web.PublishedCache
+{
+    /// <summary>
+    /// Provides access to cached documents in a specified context.
+    /// </summary>
+    internal class ContextualPublishedContentCache : ContextualPublishedCache
+    {
+        private readonly IPublishedContentCache _cache;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ContextualPublishedContentCache"/> class with a published content cache and a context.
+        /// </summary>
+        /// <param name="cache">A published content cache.</param>
+        /// <param name="umbracoContext">A context.</param>
+        public ContextualPublishedContentCache(IPublishedContentCache cache, UmbracoContext umbracoContext)
+            : base(umbracoContext)
+        {
+            _cache = cache;
+        }
+
+        /// <summary>
+        /// Gets a content identified by its unique identifier.
+        /// </summary>
+        /// <param name="contentId">The content unique identifier.</param>
+        /// <returns>The content, or null.</returns>
+        public override IPublishedContent GetById(int contentId)
+        {
+            return _cache.GetById(UmbracoContext, contentId);
+        }
+
+        /// <summary>
+        /// Gets contents at root.
+        /// </summary>
+        /// <returns>The contents.</returns>
+        public override IEnumerable<IPublishedContent> GetAtRoot()
+        {
+            return _cache.GetAtRoot(UmbracoContext);
+        }
+
+        /// <summary>
+        /// Gets a content resulting from an XPath query.
+        /// </summary>
+        /// <param name="xpath">The XPath query.</param>
+        /// <param name="vars">Optional XPath variables.</param>
+        /// <returns>The content, or null.</returns>
+        public override IPublishedContent GetSingleByXPath(string xpath, Core.Xml.XPathVariable[] vars)
+        {
+            return _cache.GetSingleByXPath(UmbracoContext, xpath, vars);
+        }
+
+        /// <summary>
+        /// Gets contents resulting from an XPath query.
+        /// </summary>
+        /// <param name="xpath">The XPath query.</param>
+        /// <param name="vars">Optional XPath variables.</param>
+        /// <returns>The contents.</returns>
+        public override IEnumerable<IPublishedContent> GetByXPath(string xpath, Core.Xml.XPathVariable[] vars)
+        {
+            return _cache.GetByXPath(UmbracoContext, xpath, vars);
+        }
+
+        // FIXME do we want that one here?
+        public IPublishedContent GetByRoute(string route, bool? hideTopLevelNode = null)
+        {
+            return _cache.GetByRoute(UmbracoContext, route, hideTopLevelNode);
+        }
+
+        // FIXME do we want that one here?
+        public IPublishedContent GetByUrlAlias(int rootNodeId, string alias)
+        {
+            return _cache.GetByUrlAlias(UmbracoContext, rootNodeId, alias);
+        }
+
+        /// <summary>
+        /// Gets a value indicating whether the underlying non-contextual cache contains published content.
+        /// </summary>
+        /// <param name="umbracoContext">The context.</param>
+        /// <returns>A value indicating whether the underlying non-contextual cache contains published content.</returns>
+        public bool HasContent(UmbracoContext umbracoContext)
+        {
+            return _cache.HasContent(umbracoContext);
+        }
+    }
+}