#42: Added collate attribute.

Author: Marc Sallin

SQLite.CodeFirst/Attributes/CollateAttribute.cs

@@ -0,0 +1,19 @@
+using System;
+
+namespace SQLite.CodeFirst
+{
+    /// <summary>
+    /// When SQLite compares two strings, it uses a collating sequence or collating function (two words for the same thing)
+    /// to determine which string is greater or if the two strings are equal. SQLite has three built-in collating functions (see <see cref="CollationFunction"/>).
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Property)]
+    public sealed class CollateAttribute : Attribute
+    {
+        public CollateAttribute(CollationFunction collation = CollationFunction.None)
+        {
+            Collation = collation;
+        }
+
+        public CollationFunction Collation { get; set; }
+    }
+}

SQLite.CodeFirst/Attributes/CollationFunction.cs

@@ -0,0 +1,28 @@
+namespace SQLite.CodeFirst
+{
+    /// <summary>
+    /// The collation function to use for this column.
+    /// Is used together with the <see cref="CollateAttribute" />.
+    /// </summary>
+    public enum CollationFunction
+    {
+        None,
+
+        /// <summary>
+        /// Compares string data using memcmp(), regardless of text encoding.
+        /// </summary>
+        RTrim,
+
+        /// <summary>
+        /// The same as binary, except the 26 upper case characters of ASCII are folded to their lower case equivalents before
+        /// the comparison is performed. Note that only ASCII characters are case folded. SQLite does not attempt to do full
+        /// UTF case folding due to the size of the tables required.
+        /// </summary>
+        NoCase,
+
+        /// <summary>
+        /// The same as binary, except that trailing space characters are ignored.
+        /// </summary>
+        Binary
+    }
+}

SQLite.CodeFirst/SQLite.CodeFirst.csproj

@@ -83,6 +83,8 @@
     <Compile Include="..\Shared\AssemblySharedInfo.cs">
       <Link>Properties\AssemblySharedInfo.cs</Link>
     </Compile>
+    <Compile Include="Attributes\CollateAttribute.cs" />
+    <Compile Include="Attributes\CollationFunction.cs" />
     <Compile Include="Attributes\OnConflictAction.cs" />
     <Compile Include="Attributes\UniqueAttribute.cs" />
     <Compile Include="Entities\IHistory.cs" />