public void Delete(TModel model)
{
var queryStrategy = _queryStrategyProvider.GetDeleteStrategy <TModel>(_queryTable.ModelStrategy);
var sql = queryStrategy.GetDbQueryScript();
var dbparams = queryStrategy.GetDbParameters();
DbModelBindingHelper.BindingModelToParameters(
model, _queryTable.ModelStrategy.PropertyStrategies, dbparams);
try
{
_serviceProvider.Open();
if (_serviceProvider.Execute(sql, dbparams) == 0)
{
throw new DbOperationException("ERROR_SQL_EXECUTION_FAILED", sql, dbparams);
}
}
catch (Exception exception)
{
throw new DbOperationException("ERROR_SQL_EXECUTION_FAILED", exception, sql, dbparams);
}
finally
{
_serviceProvider.Close();
}
}
private void ExecuteModelDbOperation(IDbQueryStrategy strategy, TModel model = null)
{
Exception exception = null;
var dbparams = (model == null)
? new List <IDbDataParameter>()
: DbModelBindingHelper.BindingModelToParameters(model, ModelStrategy.PropertyStrategies, strategy.GetDbParameters());
_serviceProvider.Open();
try
{
if (_serviceProvider.Execute(strategy.GetDbQueryScript(), dbparams) == 0)
{
throw new DbChangeNoAffectException();
}
}
catch (Exception ex)
{
exception = ex;
}
_serviceProvider.Close();
if (exception != null)
{
throw new DbAggregateException(exception);
}
}
public IEnumerable <dynamic> InvokeGet(TModel model)
{
var parameters = BindingModelPropertyToParameter(
model,
_strategy.GetModelPropertyBindings(),
_strategy.GetDbParameters()).ToList();
try
{
_serviceProvider.Open();
var reader = _serviceProvider.RunStoredProcGetReader(_strategy.GetDbProcName(), parameters);
var items = new List <dynamic>();
var records = DbModelBindingHelper.GetDataRecords(reader);
foreach (var record in records)
{
dynamic item = new ExpandoObject();
var itemProps = (IDictionary <string, object>)item;
for (var i = 0; i < record.FieldCount; i++)
{
try
{
itemProps.Add(record.GetName(i).Trim(), reader.GetValue(i));
}
catch (IndexOutOfRangeException)
{
itemProps.Add(record.GetName(i).Trim(), DBNull.Value);
}
}
items.Add(item);
}
reader.Close();
return(items);
}
catch (Exception exception)
{
throw new DbOperationException(
"ERROR_SQL_PROCEDURE_EXECUTION_FAILED",
exception,
_strategy.GetDbProcName(),
parameters);
}
finally
{
_serviceProvider.Close();
}
}
public IEnumerator <TModel> GetEnumerator()
{
var queryStrategy = _queryStrategyProvider.GetSelectStrategy(
_queryTable.ModelStrategy, _skipCount, _takeCount, _whereClauses, _orderbyClauses);
var sql = queryStrategy.GetDbQueryScript();
var dbparams = queryStrategy.GetDbParameters();
IDataReader reader = null;
var items = new List <TModel>();
_serviceProvider.Open();
try
{
reader = _serviceProvider.QueryGetReader(sql, dbparams);
if (_skipCount == 0 && _takeCount == 0)
{
var records = DbModelBindingHelper.GetDataRecords(reader);
items.AddRange(
records.Select(record =>
DbModelBindingHelper.BindingRecordToModel <TModel>(
record, _queryTable.ModelStrategy.PropertyStrategies))
);
}
else
{
while (reader.Read())
{
items.Add(DbModelBindingHelper.BindingRecordToModel <TModel>(
reader,
_queryTable.ModelStrategy.PropertyStrategies));
}
}
}
catch (Exception exception)
{
throw new DbOperationException("ERROR_SQL_EXECUTION_FAILED", exception, sql, dbparams);
}
finally
{
reader?.Close();
_serviceProvider.Close();
}
return(items.GetEnumerator());
}
public int Delete(IEnumerable <TModel> models, bool throwIfAnyModelFailed = true)
{
int success = 0;
var queryStrategy = _queryStrategyProvider.GetDeleteStrategy <TModel>(_queryTable.ModelStrategy);
var sql = queryStrategy.GetDbQueryScript();
var dbparams = queryStrategy.GetDbParameters();
var exceptions = new List <DbOperationException>();
_serviceProvider.Open();
foreach (var model in models)
{
DbModelBindingHelper.BindingModelToParameters(
model, _queryTable.ModelStrategy.PropertyStrategies, dbparams);
try
{
if (_serviceProvider.Execute(sql, dbparams) > 0)
{
success++;
}
else
{
exceptions.Add(new DbOperationException("ERROR_SQL_EXECUTION_FAILED", sql, dbparams));
}
}
catch (Exception ex)
{
exceptions.Add(new DbOperationException("ERROR_SQL_EXECUTION_FAILED", ex, sql, dbparams));
}
}
_serviceProvider.Close();
if (throwIfAnyModelFailed)
{
throw new DbMultipleOperationsException(exceptions);
}
return(success);
}
private void ExecuteModelDbOperation(IDbQueryStrategy strategy, IEnumerable <TModel> models)
{
var exceptions = new Dictionary <int, Exception>();
_serviceProvider.Open();
_serviceProvider.BeginTransaction();
var modelIdx = 0;
foreach (var model in models)
{
try
{
var dbparams = DbModelBindingHelper.BindingModelToParameters(
model, ModelStrategy.PropertyStrategies, strategy.GetDbParameters());
if (_serviceProvider.Execute(strategy.GetDbQueryScript(), dbparams) == 0)
{
throw new DbChangeNoAffectException();
}
}
catch (Exception ex)
{
exceptions.Add(modelIdx, ex);
}
modelIdx++;
}
if (!exceptions.Any())
{
_serviceProvider.Commit();
_serviceProvider.Close();
}
else
{
_serviceProvider.Rollback();
_serviceProvider.Close();
throw new DbAggregateException(exceptions);
}
}
public IEnumerable <dynamic> ExecuteQuery(string sql, object queryParams = null)
{
var autoClose = !(_provider.IsConnectionOpen());
if (autoClose)
{
_provider.Open();
}
var dbParams = GetQueryDataParameters(queryParams);
var reader = _provider.QueryGetReader(sql, dbParams);
var records = DbModelBindingHelper.GetDataRecords(reader);
var result = FormatDataRecordToDynamicModel(records);
reader.Close();
if (autoClose)
{
_provider.Close();
}
return(result);
}
private TModel GetDataModelByPosition(QueryItemPosition position, long dataIndex = 0)
{
var queryStrategy = _queryStrategyProvider.GetSelectStrategy(
_queryTable.ModelStrategy, _skipCount, _takeCount, _whereClauses, _orderbyClauses);
var sql = queryStrategy.GetDbQueryScript();
var dbparams = queryStrategy.GetDbParameters().ToList();
IDataReader reader = null;
TModel model = null;
var singleError = false;
_serviceProvider.Open();
try
{
reader = _serviceProvider.QueryGetReader(sql, dbparams);
var dataAvailable = false;
IDataRecord record = null;
var idx = 0;
switch (position)
{
case QueryItemPosition.Single:
while (reader.Read())
{
if (dataAvailable)
{
break;
}
if (idx > 1)
{
singleError = true;
break;
}
idx++;
dataAvailable = true;
model = DbModelBindingHelper.BindingRecordToModel <TModel>(
reader,
_queryTable.ModelStrategy.PropertyStrategies);
}
break;
case QueryItemPosition.ElementAt:
idx = -1;
while (reader.Read())
{
idx++;
if (idx == dataIndex)
{
record = reader;
model = DbModelBindingHelper.BindingRecordToModel <TModel>(
record, _queryTable.ModelStrategy.PropertyStrategies);
break;
}
}
break;
case QueryItemPosition.First:
reader.Read();
record = reader;
model = DbModelBindingHelper.BindingRecordToModel <TModel>(
record, _queryTable.ModelStrategy.PropertyStrategies);
break;
case QueryItemPosition.Last:
while (reader.Read())
{
record = reader;
model = DbModelBindingHelper.BindingRecordToModel <TModel>(
record, _queryTable.ModelStrategy.PropertyStrategies);
}
break;
default:
throw new NotSupportedException();
}
}
catch (Exception exception)
{
throw new DbOperationException("ERROR_SQL_EXECUTION_FAILED", exception, sql, dbparams);
}
finally
{
reader?.Close();
_serviceProvider.Close();
}
if (singleError)
{
throw new InvalidOperationException("ERROR_OUT_OF_SINGLE_RECORD");
}
return(model);
}
