Add project files.

1 files changed, 99 insertions, 0 deletions

diff --git a/VNLib.Plugins.Extensions.Data/Abstractions/IDataStore.cs b/VNLib.Plugins.Extensions.Data/Abstractions/IDataStore.cs
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+++ b/VNLib.Plugins.Extensions.Data/Abstractions/IDataStore.cs
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+using System;
+using System.Threading.Tasks;
+using System.Collections.Generic;
+
+using VNLib.Utils;
+
+namespace VNLib.Plugins.Extensions.Data.Abstractions
+{
+    /// <summary>
+    /// An abstraction that defines a Data-Store and common 
+    /// operations that retrieve or manipulate records of data
+    /// </summary>
+    /// <typeparam name="T">The data-model type</typeparam>
+    public interface IDataStore<T>
+    {
+        /// <summary>
+        /// Gets the total number of records in the current store
+        /// </summary>
+        /// <returns>A task that resolves the number of records in the store</returns>
+        Task<long> GetCountAsync();
+        /// <summary>
+        /// Gets the number of records that belong to the specified constraint
+        /// </summary>
+        /// <param name="specifier">A specifier to constrain the reults</param>
+        /// <returns>The number of records that belong to the specifier</returns>
+        Task<long> GetCountAsync(string specifier);
+        /// <summary>
+        /// Gets a record from its key
+        /// </summary>
+        /// <param name="key">The key identifying the unique record</param>
+        /// <returns>A promise that resolves the record identified by the specified key</returns>
+        Task<T?> GetSingleAsync(string key);
+        /// <summary>
+        /// Gets a record from its key
+        /// </summary>
+        /// <param name="specifiers">A variable length specifier arguemnt array for retreiving a single application</param>
+        /// <returns></returns>
+        Task<T?> GetSingleAsync(params string[] specifiers);
+        /// <summary>
+        /// Gets a record from the store with a partial model, intended to complete the model
+        /// </summary>
+        /// <param name="record">The partial model used to query the store</param>
+        /// <returns>A task the resolves the completed data-model</returns>
+        Task<T?> GetSingleAsync(T record);     
+        /// <summary>
+        /// Fills a collection with enires retireved from the store using the specifer
+        /// </summary>
+        /// <param name="collection">The collection to add entires to</param>
+        /// <param name="specifier">A specifier argument to constrain results</param>
+        /// <param name="limit">The maximum number of elements to retrieve</param>
+        /// <returns>A Task the resolves to the number of items added to the collection</returns>
+        Task<ERRNO> GetCollectionAsync(ICollection<T> collection, string specifier, int limit);        
+        /// <summary>
+        /// Fills a collection with enires retireved from the store using a variable length specifier
+        /// parameter
+        /// </summary>
+        /// <param name="collection">The collection to add entires to</param>
+        /// <param name="limit">The maximum number of elements to retrieve</param>
+        /// <param name="args"></param>
+        /// <returns>A Task the resolves to the number of items added to the collection</returns>
+        Task<ERRNO> GetCollectionAsync(ICollection<T> collection, int limit, params string[] args);
+        /// <summary>
+        /// Updates an entry in the store with the specified record
+        /// </summary>
+        /// <param name="record">The record to update</param>
+        /// <returns>A task the resolves an error code (should evaluate to false on failure, and true on success)</returns>
+        Task<ERRNO> UpdateAsync(T record);       
+        /// <summary>
+        /// Creates a new entry in the store representing the specified record
+        /// </summary>
+        /// <param name="record">The record to add to the store</param>
+        /// <returns>A task the resolves an error code (should evaluate to false on failure, and true on success)</returns>
+        Task<ERRNO> CreateAsync(T record);
+        /// <summary>
+        /// Deletes one or more entrires from the store matching the specified record
+        /// </summary>
+        /// <param name="record">The record to remove from the store</param>
+        /// <returns>A task the resolves the number of records removed(should evaluate to false on failure, and deleted count on success)</returns>
+        Task<ERRNO> DeleteAsync(T record);
+        /// <summary>
+        /// Deletes one or more entires from the store matching the specified unique key
+        /// </summary>
+        /// <param name="key">The unique key that identifies the record</param>
+        /// <returns>A task the resolves the number of records removed(should evaluate to false on failure, and deleted count on success)</returns>
+        Task<ERRNO> DeleteAsync(string key);
+        /// <summary>
+        /// Deletes one or more entires from the store matching the supplied specifiers
+        /// </summary>
+        /// <param name="specifiers">A variable length array of specifiers used to delete one or more entires</param>
+        /// <returns>A task the resolves the number of records removed(should evaluate to false on failure, and deleted count on success)</returns>
+        Task<ERRNO> DeleteAsync(params string[] specifiers);
+        /// <summary>
+        /// Updates an entry in the store if it exists, or creates a new entry if one does not already exist
+        /// </summary>
+        /// <param name="record">The record to add to the store</param>
+        /// <returns>A task the resolves the result of the operation</returns>
+        Task<ERRNO> AddOrUpdateAsync(T record);
+    }
+}