PublishedContent - the big refactoring

src/Umbraco.Web/PublishedCache/XmlPublishedCache/XmlPublishedProperty.cs

@@ -0,0 +1,67 @@
+using System;
+using System.Xml;
+using System.Xml.Serialization;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+using Umbraco.Core.Models.PublishedContent;
+using Umbraco.Web.Models;
+
+namespace Umbraco.Web.PublishedCache.XmlPublishedCache
+{
+
+	/// <summary>
+	/// Represents an IDocumentProperty which is created based on an Xml structure.
+	/// </summary>
+	[Serializable]
+	[XmlType(Namespace = "http://umbraco.org/webservices/")]
+	internal class XmlPublishedProperty : PublishedPropertyBase
+	{
+		private readonly string _xmlValue; // the raw, xml node value
+	    private readonly Lazy<object> _sourceValue;
+        private readonly Lazy<object> _value;
+        private readonly Lazy<object> _xpathValue;
+	    private readonly bool _isPreviewing;
+
+        /// <summary>
+        /// Gets the raw value of the property.
+        /// </summary>
+        public override object RawValue { get { return _xmlValue; } }
+
+        // in the Xml cache, everything is a string, and to have a value
+        // you want to have a non-null, non-empty string.
+	    public override bool HasValue 
+        {
+	        get { return _xmlValue.Trim().Length > 0; }
+	    }
+
+        public override object Value { get { return _value.Value; } }
+        public override object XPathValue { get { return _xpathValue.Value; } }
+
+		public XmlPublishedProperty(PublishedPropertyType propertyType, bool isPreviewing, XmlNode propertyXmlData)
+            : this(propertyType, isPreviewing)
+		{
+		    if (propertyXmlData == null)
+		        throw new ArgumentNullException("propertyXmlData", "Property xml source is null");
+		    _xmlValue = XmlHelper.GetNodeValue(propertyXmlData);
+        }
+
+        public XmlPublishedProperty(PublishedPropertyType propertyType, bool isPreviewing, string propertyData)
+            : this(propertyType, isPreviewing)
+        {
+            if (propertyData == null)
+                throw new ArgumentNullException("propertyData");
+            _xmlValue = propertyData;
+        }
+
+        public XmlPublishedProperty(PublishedPropertyType propertyType, bool isPreviewing)
+            : base(propertyType)
+        {
+            _xmlValue = string.Empty;
+            _isPreviewing = isPreviewing;
+
+            _sourceValue = new Lazy<object>(() => PropertyType.ConvertDataToSource(_xmlValue, _isPreviewing));
+            _value = new Lazy<object>(() => PropertyType.ConvertSourceToObject(_sourceValue.Value, _isPreviewing));
+            _xpathValue = new Lazy<object>(() => PropertyType.ConvertSourceToXPath(_sourceValue.Value, _isPreviewing));
+        }
+	}
+}