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using System.Data;
using System.Text.Json;
using Dapper;
namespace CrupestApi.Commons.Crud;
public class CrudService<TEntity> : IDisposable where TEntity : class
{
protected readonly TableInfo _table;
protected readonly string? _connectionName;
protected readonly IDbConnection _dbConnection;
protected readonly EntityJsonHelper<TEntity> _jsonHelper;
private readonly ILogger<CrudService<TEntity>> _logger;
public CrudService(string? connectionName, ITableInfoFactory tableInfoFactory, IDbConnectionFactory dbConnectionFactory, EntityJsonHelper<TEntity> jsonHelper, ILoggerFactory loggerFactory)
{
_connectionName = connectionName;
_table = tableInfoFactory.Get(typeof(TEntity));
_dbConnection = dbConnectionFactory.Get(_connectionName);
_jsonHelper = jsonHelper;
_logger = loggerFactory.CreateLogger<CrudService<TEntity>>();
if (!_table.CheckExistence(_dbConnection))
{
DoInitializeDatabase(_dbConnection);
}
}
public EntityJsonHelper<TEntity> JsonHelper => _jsonHelper;
public virtual void DoInitializeDatabase(IDbConnection connection)
{
using var transaction = connection.BeginTransaction();
connection.Execute(_table.GenerateCreateTableSql(), transaction: transaction);
transaction.Commit();
}
public void Dispose()
{
_dbConnection.Dispose();
}
public List<TEntity> GetAll()
{
var result = _table.Select<TEntity>(_dbConnection, null);
return result;
}
public TEntity GetByKey(string key)
{
var result = _table.Select<TEntity>(_dbConnection, null, WhereClause.Create().Eq(_table.KeyColumn.ColumnName, key));
return result.Single();
}
public string Create(JsonElement jsonElement)
{
var insertClauses = _jsonHelper.ConvertJsonElementToInsertClauses(jsonElement);
var key = _table.Insert(_dbConnection, insertClauses);
return (string)key;
}
}
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