From b1037d1936b636572bfe2ac85f486ae98fff7ffa Mon Sep 17 00:00:00 2001
From: Robert Foster <rfoster@refoster.com.au>
Date: Sun, 30 Mar 2014 19:07:35 +1100
Subject: [PATCH] Added a TagMapper class to resolve ITag back to TagDto.

---
 .../Persistence/Mappers/TagMapper.cs          | 44 +++++++++++++++++++
 src/Umbraco.Core/Umbraco.Core.csproj          |  1 +
 2 files changed, 45 insertions(+)
 create mode 100644 src/Umbraco.Core/Persistence/Mappers/TagMapper.cs

diff --git a/src/Umbraco.Core/Persistence/Mappers/TagMapper.cs b/src/Umbraco.Core/Persistence/Mappers/TagMapper.cs
new file mode 100644
index 0000000000..672a433b12
--- /dev/null
+++ b/src/Umbraco.Core/Persistence/Mappers/TagMapper.cs
@@ -0,0 +1,44 @@
+using System.Collections.Concurrent;
+using Umbraco.Core.Models;
+using Umbraco.Core.Models.Rdbms;
+
+namespace Umbraco.Core.Persistence.Mappers
+{
+    /// <summary>
+    /// Represents a <see cref="ContentType"/> to DTO mapper used to translate the properties of the public api 
+    /// implementation to that of the database's DTO as sql: [tableName].[columnName].
+    /// </summary>
+    [MapperFor(typeof(Tag))]
+    [MapperFor(typeof(ITag))]
+    public sealed class TagMapper : BaseMapper
+    {
+        private static readonly ConcurrentDictionary<string, DtoMapModel> PropertyInfoCacheInstance = new ConcurrentDictionary<string, DtoMapModel>();
+
+        //NOTE: its an internal class but the ctor must be public since we're using Activator.CreateInstance to create it
+        // otherwise that would fail because there is no public constructor.
+        public TagMapper()
+        {
+            BuildMap();
+        }
+
+        #region Overrides of BaseMapper
+
+        internal override ConcurrentDictionary<string, DtoMapModel> PropertyInfoCache
+        {
+            get { return PropertyInfoCacheInstance; }
+        }
+
+        internal override void BuildMap()
+        {
+            if (PropertyInfoCache.IsEmpty)
+            {
+                CacheMap<Tag, TagDto>(src => src.Id, dto => dto.Id);
+                CacheMap<Tag, TagDto>(src => src.Text, dto => dto.Tag);
+                CacheMap<Tag, TagDto>(src => src.Group, dto => dto.Group);
+                //CacheMap<Tag, TagDto>(src => src., dto => dto.ParentId); // Doesn't seem to be enabled - RJF
+            }
+        }
+
+        #endregion
+    }
+}
diff --git a/src/Umbraco.Core/Umbraco.Core.csproj b/src/Umbraco.Core/Umbraco.Core.csproj
index 264612e738..d85391a0cd 100644
--- a/src/Umbraco.Core/Umbraco.Core.csproj
+++ b/src/Umbraco.Core/Umbraco.Core.csproj
@@ -364,6 +364,7 @@
     <Compile Include="Persistence\EntityNotFoundException.cs" />
     <Compile Include="Persistence\Factories\MemberGroupFactory.cs" />
     <Compile Include="Persistence\Mappers\MemberGroupMapper.cs" />
+    <Compile Include="Persistence\Mappers\TagMapper.cs" />
     <Compile Include="Persistence\Migrations\DataLossException.cs" />
     <Compile Include="Persistence\Migrations\Upgrades\TargetVersionSevenOneZero\AssignMissingPrimaryForMySqlKeys.cs" />
     <Compile Include="Persistence\Migrations\Upgrades\TargetVersionSixTwoZero\AssignMissingPrimaryForMySqlKeys.cs" />