public override bool BulkInsert(DbTable schema, MungedDataReader reader)
{
using (var cn = _getConnection()) {
using (SqlBulkCopy copy = new SqlBulkCopy(cn)) {
//copy.ColumnMappings = new SqlBulkCopyColumnMappingCollection();
for (var i = 0; i < reader.ColumnNames.Length; i++) {
var column = reader.ColumnNames[i];
var sourceOrdinal = i;
var destinationOrdinal = schema.Columns.FindIndex(x => x.Name == column);
if (destinationOrdinal == -1) {
var msg = string.Format("Unable to resolve column mapping, column: {0} was not found in destination table {1}",
column,
_table
);
throw new Exception(msg);
}
copy.ColumnMappings.Add(new SqlBulkCopyColumnMapping(i, destinationOrdinal));
}
copy.DestinationTableName = string.Format("[{0}].[{1}]", _schema, _table);
copy.BatchSize = 1000;
copy.BulkCopyTimeout = 9999999;
copy.WriteToServer(reader);
}
}
return true;
}
public DbTable(string tableName, MungedDataReader reader)
{
Name = tableName;
Columns = new List<DbColumn>();
for (var i = 0; i < reader.ColumnNames.Length; i++) {
var type = reader.ColumnTypes[i];
var name = reader.ColumnNames[i];
var c = new DbColumn(name, type);
Columns.Add(c);
}
}
public DbTable(string tableName, MungedDataReader reader)
{
Name = tableName;
Columns = new List <DbColumn>();
for (var i = 0; i < reader.ColumnNames.Length; i++)
{
var type = reader.ColumnTypes[i];
var name = reader.ColumnNames[i];
var c = new DbColumn(name, type);
Columns.Add(c);
}
}
public bool Execute()
{
using (var stream = File.OpenText(_filename)) {
using (var reader = new MungedDataReader(stream)) {
var currentSchema = new DbTable(_table, reader);
var oldSchema = GetDbSchema();
// Check / Update the schema in the DB
if (oldSchema == null) {
CreateTable(currentSchema);
} else {
ModifySchema(oldSchema, currentSchema);
}
var newSchema = GetDbSchema();
BulkInsert(newSchema, reader);
}
}
return true;
}
public abstract bool BulkInsert(DbTable schema, MungedDataReader reader);
