Create ConfigurableVariableSource to allow inline variables definitions with VariablePlaceholderConfigurer (SPRNET-1426)

src/Spring/Spring.Core/Objects/Factory/Config/ConfigurableVariableSource.cs

@@ -0,0 +1,85 @@
+#region License
+
+/*
+ * Copyright <20> 2002-2011 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#endregion
+
+using System;
+using System.Globalization;
+using System.Collections;
+using System.Collections.Specialized;
+
+using Spring.Util;
+
+namespace Spring.Objects.Factory.Config
+{
+    /// <summary>
+    /// Implementation of <see cref="IVariableSource"/> that
+    /// resolves variable name against provided variables.
+    /// </summary>
+    /// <remarks>
+    /// Variable name resolution is case insensitive.
+    /// </remarks>
+    /// <author>Bruno Baia</author>
+    [Serializable]
+    public class ConfigurableVariableSource : IVariableSource
+    {
+        protected NameValueCollection _variables;
+
+        /// <summary>
+        /// Initializes a new instance of <see cref="ConfigurableVariableSource"/>.
+        /// </summary>
+        public ConfigurableVariableSource()
+        {
+            this._variables = new NameValueCollection();
+        }
+
+        /// <summary>
+        /// Gets or sets variables.
+        /// </summary>
+        public NameValueCollection Variables
+        {
+            get { return _variables; }
+            set { _variables = value; }
+        }
+
+        /// <summary>
+        /// Before requesting a variable resolution, a client should
+        /// ask, whether the source can resolve a particular variable name.
+        /// </summary>
+        /// <param name="name">the name of the variable to resolve</param>
+        /// <returns><c>true</c> if the variable can be resolved, <c>false</c> otherwise</returns>
+        public bool CanResolveVariable(string name)
+        {
+            return this._variables.Get(name) != null;
+        }
+
+        /// <summary>
+        /// Resolves variable value for the specified variable name.
+        /// </summary>
+        /// <param name="name">
+        /// The name of the variable to resolve.
+        /// </param>
+        /// <returns>
+        /// The variable value if able to resolve, <c>null</c> otherwise.
+        /// </returns>
+        public string ResolveVariable(string name)
+        {
+            return this._variables.Get(name);
+        }
+    }
+}

src/Spring/Spring.Core/Spring.Core.2002.csproj

@@ -1456,6 +1456,11 @@
                     SubType = "Code"
                     BuildAction = "Compile"
                 />
+                <File
+                    RelPath = "Objects\Factory\Config\ConfigurableVariableSource.cs"
+                    SubType = "Code"
+                    BuildAction = "Compile"
+                />
                 <File
                     RelPath = "Objects\Factory\Config\ConstructorArgumentValues.cs"
                     SubType = "Code"

src/Spring/Spring.Core/Spring.Core.2003.csproj

@@ -2085,6 +2085,11 @@
                     SubType = "Code"
                     BuildAction = "Compile"
                 />
+                <File
+                    RelPath = "Objects\Factory\Config\ConfigurableVariableSource.cs"
+                    SubType = "Code"
+                    BuildAction = "Compile"
+                />
                 <File
                     RelPath = "Objects\Factory\Config\ConstructorArgumentValues.cs"
                     SubType = "Code"

src/Spring/Spring.Core/Spring.Core.2005.csproj

@@ -656,6 +656,7 @@
     <Compile Include="Objects\Factory\Config\CommandLineArgsVariableSource.cs" />
     <Compile Include="Objects\Factory\Config\ConfigSectionVariableSource.cs" />
     <Compile Include="Objects\Factory\Config\ConnectionStringsVariableSource.cs" />
+    <Compile Include="Objects\Factory\Config\ConfigurableVariableSource.cs" />
     <Compile Include="Objects\Factory\Config\ICustomValueReferenceHolder.cs" />
     <Compile Include="Objects\Factory\Config\DelegateObjectFactoryConfigurer.cs" />
     <Compile Include="Objects\Factory\Config\DependencyDescriptor.cs" />

src/Spring/Spring.Core/Spring.Core.2008.csproj

@@ -668,6 +668,7 @@
     <Compile Include="Objects\Factory\Config\CommandLineArgsVariableSource.cs" />
     <Compile Include="Objects\Factory\Config\ConfigSectionVariableSource.cs" />
     <Compile Include="Objects\Factory\Config\ConnectionStringsVariableSource.cs" />
+    <Compile Include="Objects\Factory\Config\ConfigurableVariableSource.cs" />
     <Compile Include="Objects\Factory\Config\ICustomValueReferenceHolder.cs" />
     <Compile Include="Objects\Factory\Config\DelegateObjectFactoryConfigurer.cs" />
     <Compile Include="Objects\Factory\Config\DependencyDescriptor.cs" />

src/Spring/Spring.Core/Spring.Core.2010.csproj

@@ -681,6 +681,7 @@
     <Compile Include="Objects\Factory\Config\CommandLineArgsVariableSource.cs" />
     <Compile Include="Objects\Factory\Config\ConfigSectionVariableSource.cs" />
     <Compile Include="Objects\Factory\Config\ConnectionStringsVariableSource.cs" />
+    <Compile Include="Objects\Factory\Config\ConfigurableVariableSource.cs" />
     <Compile Include="Objects\Factory\Config\ICustomValueReferenceHolder.cs" />
     <Compile Include="Objects\Factory\Config\DelegateObjectFactoryConfigurer.cs" />
     <Compile Include="Objects\Factory\Config\DependencyDescriptor.cs" />