Code optimization

src/Enum/CachePropertyType.cs

@@ -1,8 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using DbSyncKit.DB.Manager;
 
 namespace DbSyncKit.DB.Enum
 {
@@ -54,7 +50,17 @@ public enum CachePropertyType
         /// <summary>
         /// Represents properties that are comparable (neither key nor excluded).
         /// </summary>
-        ComparableProperties
+        ComparableProperties,
+
+        /// <summary>
+        /// Represents properties that are unique.
+        /// </summary>
+        KeyProperties,
+
+        /// <summary>
+        /// Represents properties that are excluded.
+        /// </summary>
+        ExcludedProperties
     }
 
 }

src/Helper/QueryHelper.cs

@@ -68,9 +68,9 @@ public List<string> GetKeyColumns<T>() where T : IDataContractComparer
         /// <typeparam name="T">The type for which to get the excluded properties. Must implement <see cref="IDataContractComparer"/>.</typeparam>
         /// <returns>A list of excluded property names.</returns>
         /// <seealso cref="IDataContractComparer"/>
-        public List<string> GetExcludedProperties<T>() where T : IDataContractComparer
+        public List<string> GetExcludedColumns<T>() where T : IDataContractComparer
         {
-            return CacheManager.GetExcludedProperties(typeof(T));
+            return CacheManager.GetExcludedColumns(typeof(T));
         }
 
         /// <summary>
@@ -98,10 +98,29 @@ public List<string> GetIdentityColumns<T>() where T : IDataContractComparer
             return CacheManager.GetIdentityColumns(typeof(T));
         }
 
+        /// <summary>
+        /// Retrieves an array of <see cref="PropertyInfo"/> objects representing the properties that are used for data comparison
+        /// in objects of type <typeparamref name="T"/>. These properties are determined based on the implementation of the
+        /// <see cref="IDataContractComparer"/> interface.
+        /// </summary>
+        /// <typeparam name="T">The type of objects for which to retrieve comparable properties.</typeparam>
+        /// <returns>An array of <see cref="PropertyInfo"/> objects representing the comparable properties of type <typeparamref name="T"/>.</returns>
         public PropertyInfo[] GetComparableProperties<T>() where T: IDataContractComparer
         {
             return CacheManager.GetComparableProperties(typeof(T));
         }
 
+        /// <summary>
+        /// Retrieves an array of <see cref="PropertyInfo"/> objects representing the properties that are used as key properties
+        /// for uniquely identifying objects of type <typeparamref name="T"/>. These key properties are determined based on the
+        /// implementation of the <see cref="IDataContractComparer"/> interface.
+        /// </summary>
+        /// <typeparam name="T">The type of objects for which to retrieve key properties.</typeparam>
+        /// <returns>An array of <see cref="PropertyInfo"/> objects representing the key properties of type <typeparamref name="T"/>.</returns>
+        public PropertyInfo[] GetKeyProperties<T>() where T : IDataContractComparer
+        {
+            return CacheManager.GetComparableProperties(typeof(T));
+        }
+
     }
 }

src/Manager/CacheManager.cs

@@ -66,7 +66,7 @@ public static List<string> GetIdentityColumns(Type type)
             identityColumns = CacheManager.GetTypeProperties(type)
                 .Where(prop =>
                     Attribute.IsDefined(prop, typeof(KeyPropertyAttribute)) &&
-                    ((KeyPropertyAttribute)Attribute.GetCustomAttribute(prop, typeof(KeyPropertyAttribute))).IsPrimaryKey
+                    ((KeyPropertyAttribute)Attribute.GetCustomAttribute(prop, typeof(KeyPropertyAttribute))!).IsPrimaryKey
                 ).Select(prop => prop.Name).ToList();
 
 
@@ -92,7 +92,7 @@ public static List<string> GetKeyColumns(Type type)
             keyColumns = GetTypeProperties(type)
                 .Where(prop => 
                     Attribute.IsDefined(prop, typeof(KeyPropertyAttribute)) &&
-                    ((KeyPropertyAttribute)Attribute.GetCustomAttribute(prop, typeof(KeyPropertyAttribute))).KeyProperty
+                    ((KeyPropertyAttribute)Attribute.GetCustomAttribute(prop, typeof(KeyPropertyAttribute))!).KeyProperty
                 ).Select(prop => prop.Name).ToList();
 
             typeCaches.Add(nameof(CachePropertyType.Key), keyColumns);
@@ -103,9 +103,9 @@ public static List<string> GetKeyColumns(Type type)
         /// <summary>
         /// Gets the names of properties marked as excluded properties for a specified type.
         /// </summary>
-        /// <param name="type">The type for which to retrieve excluded properties.</param>
-        /// <returns>A list of excluded property names.</returns>
-        public static List<string> GetExcludedProperties(Type type)
+        /// <param name="type">The type for which to retrieve excluded columns.</param>
+        /// <returns>A list of excluded column names.</returns>
+        public static List<string> GetExcludedColumns(Type type)
         {
             var typeCaches = GetOrCreateDictionary(type);
 
@@ -114,11 +114,7 @@ public static List<string> GetExcludedProperties(Type type)
                 return (List<string>)excludedProperties;
             }
 
-            excludedProperties = GetTypeProperties(type)
-                .Where(prop => 
-                    Attribute.IsDefined(prop, typeof(ExcludedPropertyAttribute)) &&
-                    ((ExcludedPropertyAttribute)Attribute.GetCustomAttribute(prop, typeof(ExcludedPropertyAttribute))).Excluded
-                ).Select(prop => prop.Name).ToList();
+            excludedProperties = GetExcludedProperties(type).Select(prop => prop.Name).ToList();
 
             typeCaches.Add(nameof(CachePropertyType.Excluded), excludedProperties);
 
@@ -194,9 +190,9 @@ public static string GetTableName(Type type)
             else
                 TableSchema = null;
 
-            typeCaches.Add(nameof(CachePropertyType.TableSchema), TableSchema);
+            typeCaches.Add(nameof(CachePropertyType.TableSchema), TableSchema!);
 
-            return (string)TableSchema;
+            return (string?)TableSchema;
         }
 
         /// <summary>
@@ -266,14 +262,67 @@ public static PropertyInfo[] GetComparableProperties(Type type)
             }
 
             var keyProps = GetKeyColumns(type);
-            var excludeProps = GetExcludedProperties(type);
+            var excludeProps = GetExcludedColumns(type);
 
             _properties = GetTypeProperties(type).Where(prop => !keyProps.Contains(prop.Name) && !excludeProps.Contains(prop.Name)).ToArray();
 
             return (PropertyInfo[])_properties;
 
         }
 
+        /// <summary>
+        /// Gets the properties that are unique for a specified type.
+        /// </summary>
+        /// <param name="type">The type for which to retrieve unique properties.</param>
+        /// <returns>An array of <see cref="PropertyInfo"/> objects representing unique properties of the specified type.</returns>
+        public static PropertyInfo[] GetKeyProperties(Type type)
+        {
+            var typeCaches = GetOrCreateDictionary(type);
+
+            if (typeCaches.TryGetValue(nameof(CachePropertyType.KeyProperties), out var _properties))
+            {
+                return (PropertyInfo[])_properties;
+            }
+
+            var keyProps = GetKeyColumns(type);
+            var excludeProps = GetExcludedColumns(type);
+
+            _properties = GetTypeProperties(type)
+                .Where(prop =>
+                    Attribute.IsDefined(prop, typeof(KeyPropertyAttribute)) &&
+                    ((KeyPropertyAttribute)Attribute.GetCustomAttribute(prop, typeof(KeyPropertyAttribute))!).KeyProperty
+                ).ToArray();
+
+            return (PropertyInfo[])_properties;
+
+        }
+
+        /// <summary>
+        /// Gets the excluded properties for a specified type.
+        /// </summary>
+        /// <param name="type">The type for which to retrieve the excluded properties.</param>
+        /// <returns>An array of <see cref="PropertyInfo"/> representing the excluded properties for the specified type.</returns>
+        public static PropertyInfo[] GetExcludedProperties(Type type)
+        {
+            var typeCaches = GetOrCreateDictionary(type);
+
+            if (typeCaches.TryGetValue(nameof(CachePropertyType.ExcludedProperties), out var _properties))
+            {
+                return (PropertyInfo[])_properties;
+            }
+
+            var keyProps = GetKeyColumns(type);
+
+            _properties = GetTypeProperties(type)
+                .Where(prop =>
+                    Attribute.IsDefined(prop, typeof(ExcludedPropertyAttribute)) &&
+                    ((ExcludedPropertyAttribute)Attribute.GetCustomAttribute(prop, typeof(ExcludedPropertyAttribute))!).Excluded
+                ).ToArray();
+
+            return (PropertyInfo[])_properties;
+
+        }
+
         /// <summary>
         /// Disposes of cached data associated with the specified type.
         /// </summary>

src/Utils/DataContractUtility.cs

@@ -12,87 +12,12 @@ namespace DbSyncKit.DB.Utils
     public class DataContractUtility<T> : IDataContractComparer where T : IDataContractComparer
     {
         /// <summary>
-        /// Calculates the hash code for the object, excluding specified properties.
+        /// Overrides the default GetHashCode method to provide a custom hash code for the object.
         /// </summary>
-        /// <param name="excludedProperties">List of property names to exclude from hash code calculation.</param>
-        /// <returns>The calculated hash code.</returns>
-        public int GetHashCode(List<string> excludedProperties)
+        /// <returns>The hash code of the object.</returns>
+        public override int GetHashCode()
         {
-            // Get all properties of the Entity class
-            var properties = typeof(T).GetProperties();
-
-            // Filter out properties that are in the exclusion list
-            var filteredProperties = properties
-                .Where(prop => !excludedProperties.Contains(prop.Name));
-
-            // Calculate the hash code using XOR
-            int hashCode = base.GetHashCode();
-            foreach (var prop in filteredProperties)
-            {
-                var value = prop.GetValue(this);
-                if (value != null)
-                {
-                    hashCode ^= value.GetHashCode();
-                }
-            }
-
-            return hashCode;
-        }
-
-        /// <summary>
-        /// Generates a string representation of the object, excluding specified properties.
-        /// </summary>
-        /// <param name="excludedProperties">List of property names to exclude from the string representation.</param>
-        /// <returns>The string representation of the object.</returns>
-        public string ToString(List<string> excludedProperties)
-        {
-            // Get all properties of the Entity class
-            var properties = typeof(T).GetProperties();
-
-            // Filter out properties that are in the exclusion list
-            var filteredProperties = properties
-                .Where(prop => !excludedProperties.Contains(prop.Name));
-
-            // Create a string representation
-            StringBuilder stringBuilder = new StringBuilder(base.ToString());
-            foreach (var prop in filteredProperties)
-            {
-                var value = prop.GetValue(this);
-                stringBuilder.Append($",\t{prop.Name}: {value}");
-            }
-
-            return stringBuilder.ToString();
-        }
-
-        /// <summary>
-        /// Checks if the current object is equal to another object, considering specified properties.
-        /// </summary>
-        /// <param name="obj">The object to compare.</param>
-        /// <param name="listOfProperties">List of properties to consider for equality check.</param>
-        /// <param name="isExcluded">If true, specified properties are excluded; otherwise, they are included.</param>
-        /// <returns>True if the objects are equal; otherwise, false.</returns>
-        public bool Equals(T obj, List<string> listOfProperties, bool isExcluded = true)
-        {
-            if (obj == null || GetType() != obj.GetType())
-                return false;
-
-            var props = GetType().GetProperties();
-
-            if (isExcluded)
-                props = props.Where(prop => !listOfProperties.Contains(prop.Name)).ToArray();
-            else
-                props = props.Where(prop => listOfProperties.Contains(prop.Name)).ToArray();
-
-
-            foreach (var prop in props)
-            {
-                if (!EqualityComparer<object?>.Default.Equals(prop.GetValue(this), prop.GetValue(obj)))
-                {
-                    return false;
-                }
-            }
-
-            return true;
+            return base.GetHashCode();
         }
 
         /// <summary>
@@ -105,9 +30,6 @@ public override bool Equals(object? obj)
             if (obj == null || GetType() != obj.GetType())
                 return false;
 
-            var listOfExcluded = CacheManager.GetExcludedProperties(GetType());
-            var listOfKey = CacheManager.GetKeyColumns(GetType());
-
             var props = CacheManager.GetComparableProperties(GetType());
 
             foreach (var prop in props)