DynamORM/DynamicExpando.cs

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+/*
+ * DynamORM - Dynamic Object-Relational Mapping library.
+ * Copyright (c) 2012, Grzegorz Russek (grzegorz.russek@gmail.com)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Dynamic;
+using System.Collections.Concurrent;
+
+namespace DynamORM
+{
+    /// <summary>Dynamic expando is a simple and temporary class to resolve memory leaks inside ExpandoObject.</summary>
+    public class DynamicExpando : DynamicObject, IDictionary<string, object>, ICollection<KeyValuePair<string, object>>, IEnumerable<KeyValuePair<string, object>>, IEnumerable
+    {
+        private Dictionary<string, object> _data = new Dictionary<string, object>();
+
+        /// <summary>Initializes a new instance of the <see cref="DynamicExpando"/> class.</summary>
+        public DynamicExpando()
+        {
+        }
+
+        /// <summary>Tries to get member value.</summary>
+        /// <returns>Returns <c>true</c>, if get member was tryed, <c>false</c> otherwise.</returns>
+        /// <param name="binder">The context binder.</param>
+        /// <param name="result">The invokation result.</param>
+        public override bool TryGetMember(GetMemberBinder binder, out object result)
+        {
+            result = _data.TryGetValue(binder.Name);
+
+            return true;
+        }
+
+        /// <summary>Tries to set member.</summary>
+        /// <returns>Returns <c>true</c>, if set member was tryed, <c>false</c> otherwise.</returns>
+        /// <param name="binder">The context binder.</param>
+        /// <param name="value">Value which will be set.</param>
+        public override bool TrySetMember(SetMemberBinder binder, object value)
+        {
+            _data[binder.Name] = value;
+
+            return true;
+        }
+
+        #region IDictionary implementation
+
+        bool IDictionary<string, object>.ContainsKey(string key)
+        {
+            return _data.ContainsKey(key);
+        }
+
+        void IDictionary<string, object>.Add(string key, object value)
+        {
+            _data.Add(key, value);
+        }
+
+        bool IDictionary<string, object>.Remove(string key)
+        {
+            return _data.Remove(key);
+        }
+
+        bool IDictionary<string, object>.TryGetValue(string key, out object value)
+        {
+            return _data.TryGetValue(key, out value);
+        }
+
+        object IDictionary<string, object>.this [string index] { get { return _data[index]; } set { _data[index] = value; } }
+
+        ICollection<string> IDictionary<string, object>.Keys { get { return _data.Keys; } }
+
+        ICollection<object> IDictionary<string, object>.Values { get { return _data.Values; } }
+
+        #endregion
+
+        #region ICollection implementation
+
+        void ICollection<KeyValuePair<string, object>>.Add(KeyValuePair<string, object> item)
+        {
+            ((ICollection<KeyValuePair<string, object>>)_data).Add(item);
+        }
+
+        void ICollection<KeyValuePair<string, object>>.Clear()
+        {
+            _data.Clear();
+        }
+
+        bool ICollection<KeyValuePair<string, object>>.Contains(KeyValuePair<string, object> item)
+        {
+            return ((ICollection<KeyValuePair<string, object>>)_data).Contains(item);
+        }
+
+        void ICollection<KeyValuePair<string, object>>.CopyTo(KeyValuePair<string, object>[] array, int arrayIndex)
+        {
+            ((ICollection<KeyValuePair<string, object>>)_data).CopyTo(array, arrayIndex);
+        }
+
+        bool ICollection<KeyValuePair<string, object>>.Remove(KeyValuePair<string, object> item)
+        {
+            return ((ICollection<KeyValuePair<string, object>>)_data).Remove(item);
+        }
+
+        int ICollection<KeyValuePair<string, object>>.Count{ get { return _data.Count; } }
+
+        bool ICollection<KeyValuePair<string, object>>.IsReadOnly { get { return ((ICollection<KeyValuePair<string, object>>)_data).IsReadOnly; } }
+
+        #endregion
+
+        #region IEnumerable implementation
+
+        IEnumerator<KeyValuePair<string, object>> IEnumerable<KeyValuePair<string, object>>.GetEnumerator()
+        {
+            return _data.GetEnumerator();
+        }
+
+        #endregion
+
+        #region IEnumerable implementation
+
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return ((IEnumerable)_data).GetEnumerator();
+        }
+
+        #endregion
+    }
+}
+