/// <summary>
/// 根据查询条件获取复合结果
/// </summary>
/// <param name="predicate">查询条件</param>
/// <param name="commandTimeout">超时时间</param>
/// <returns></returns>
public IMultipleResultReader GetMultiple(GetMultiplePredicate predicate, int?commandTimeout)
{
return(_dapper.GetMultiple(Connection, predicate, _transaction, commandTimeout));
}
protected GridReaderResultReader GetMultipleByBatch(IDbConnection connection, GetMultiplePredicate predicate, IDbTransaction transaction, int?commandTimeout)
{
Dictionary <string, object> parameters = new Dictionary <string, object>();
StringBuilder sql = new StringBuilder();
foreach (var item in predicate.Items)
{
IClassMapper classMap = SqlGenerator.Configuration.GetMap(item.Type);
IPredicate itemPredicate = item.Value as IPredicate;
if (itemPredicate == null && item.Value != null)
{
itemPredicate = GetPredicate(classMap, item.Value);
}
sql.AppendLine(SqlGenerator.Select(classMap, itemPredicate, item.Sort, parameters) + SqlGenerator.Configuration.Dialect.BatchSeperator);
}
DynamicParameters dynamicParameters = new DynamicParameters();
foreach (var parameter in parameters)
{
dynamicParameters.Add(parameter.Key, parameter.Value);
}
SqlMapper.GridReader grid = connection.QueryMultiple(sql.ToString(), dynamicParameters, transaction, commandTimeout, CommandType.Text);
return(new GridReaderResultReader(grid));
}
protected SequenceReaderResultReader GetMultipleBySequence(IDbConnection connection, GetMultiplePredicate predicate, IDbTransaction transaction, int?commandTimeout)
{
IList <SqlMapper.GridReader> items = new List <SqlMapper.GridReader>();
foreach (var item in predicate.Items)
{
Dictionary <string, object> parameters = new Dictionary <string, object>();
IClassMapper classMap = SqlGenerator.Configuration.GetMap(item.Type);
IPredicate itemPredicate = item.Value as IPredicate;
if (itemPredicate == null && item.Value != null)
{
itemPredicate = GetPredicate(classMap, item.Value);
}
string sql = SqlGenerator.Select(classMap, itemPredicate, item.Sort, parameters);
DynamicParameters dynamicParameters = new DynamicParameters();
foreach (var parameter in parameters)
{
dynamicParameters.Add(parameter.Key, parameter.Value);
}
SqlMapper.GridReader queryResult = connection.QueryMultiple(sql, dynamicParameters, transaction, commandTimeout, CommandType.Text);
items.Add(queryResult);
}
return(new SequenceReaderResultReader(items));
}
/// <summary>
/// Executes a select query for multiple objects, returning IMultipleResultReader for each predicate.
/// </summary>
public static IMultipleResultReader GetMultiple(this IDbConnection connection, GetMultiplePredicate predicate, IDbTransaction transaction = null, int?commandTimeout = null)
{
return(Instance.GetMultiple(connection, predicate, transaction, commandTimeout));
}