/// <summary>
/// Load the metadata with the columns read from the IDataReader.
/// The query must have this defenition in order :
/// Schema, Table, Column, DataType, Precision, Scale, IsUnsigned, IsPrimaryKey, IsAutoIncrement
/// </summary>
/// <param name="reader"></param>
/// <param name="serverId"></param>
/// <param name="database"></param>
/// <param name="typeConverter"></param>
internal void LoadColumns(IDataReader reader, Int16 serverId, String database, ISqlTypeConverter typeConverter)
{
var schemaMetadata = new SchemaMetadata();
var lstSchemaColumn = new List <ColumnDefinition>();
string currentSchema;
if (!reader.Read())
{
return;
}
//Init first row
var previousSchema = reader.GetString(0);
var previousTable = new TableMetadata(reader.GetString(1));
//Pour chaque ligne
do
{
currentSchema = reader.GetString(0);
var currentTable = reader.GetString(1);
//Si on change de table
if (currentSchema != previousSchema || currentTable != previousTable.Name)
{
previousTable.ColumnsDefinition = lstSchemaColumn;
schemaMetadata.Add(previousTable);
lstSchemaColumn = new List <ColumnDefinition>();
previousTable = new TableMetadata(currentTable);
}
//Si on change de schema
if (currentSchema != previousSchema)
{
this[serverId, database, currentSchema] = schemaMetadata;
schemaMetadata = new SchemaMetadata();
}
//Ajoute la colonne
var col = new ColumnDefinition
{
Name = reader.GetString(2),
SqlType = new SqlType
{
DataType = reader.GetString(3),
Precision = reader.GetInt32(4),
Scale = reader.GetInt32(5),
IsUnsigned = reader.GetBoolean(6)
},
IsPrimary = reader.GetBoolean(7),
IsAutoIncrement = reader.GetBoolean(8)
};
col.DbType = typeConverter.ConvertFromSql(col.SqlType);
lstSchemaColumn.Add(col);
} while (reader.Read());
//Ajoute la dernière table / schema
if (lstSchemaColumn.Count > 0)
{
previousTable.ColumnsDefinition = lstSchemaColumn;
schemaMetadata.Add(previousTable);
this[serverId, database, currentSchema] = schemaMetadata;
}
}
