private void LoadDataFiles()
{
var dataFiles = new List <TestDataFile>();
// Load the data
foreach (var file in Directory.GetFiles(_configuration.DataFolder, "*.txt"))
{
var dataFile = new TestDataFile(file);
dataFile.EntityName = _configuration.GetEntityName(Path.GetFileNameWithoutExtension(file));
dataFiles.Add(dataFile);
}
// Load the dependent tables for each file (i.e. what must be imported before they can be imported)
foreach (var file in dataFiles)
{
foreach (var part in file.PartNames)
{
// TODO: Allow mapping table and column names
var typeName = "";
if (part.Contains("."))
{
typeName = part.Split('.')[0].TrimStart('-');
}
else if (part.EndsWith("ID") || part.EndsWith("Id"))
{
var fieldName = _configuration.GetFieldName(file.EntityName, part);
typeName = _configuration.GetEntityNameForField(file.EntityName, fieldName);
if (typeName == fieldName)
{
typeName = fieldName.Substring(0, fieldName.Length - 2);
}
typeName = typeName.TrimStart('-');
}
if (!string.IsNullOrEmpty(typeName))
{
var dep = dataFiles.FirstOrDefault(f => f.EntityName == typeName);
if (dep != null)
{
file.Dependencies.Add(dep);
}
}
}
}
// Sort so that dependent files are processed first
_dataFiles.AddRange(TopologicalSort(dataFiles, f => f.Dependencies));
}
private void ImportData(TestDataFile dataFile)
{
var entityType = GetEntityType(dataFile.EntityName);
var entities = new List <object>();
foreach (var line in dataFile.Lines)
{
var createMethod = typeof(Database).GetMethod("Create", Type.EmptyTypes).MakeGenericMethod(entityType);
var entity = createMethod.Invoke(_db, null);
foreach (var propName in line.Parts.Keys)
{
// TODO: Allow specifying primary key name
// Skip ID because it gets set automatically by the database
// Howevever, we might like to specify it in the data file so that we can easily refer to what entity has what ID
if (propName.Equals("ID", StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
if (!_configuration.ShouldMapField(dataFile.EntityName, propName))
{
continue;
}
var value = line.Parts[propName].Replace("\\n", Environment.NewLine);
if (propName.Contains("."))
{
// It's a link to another entity, so we have to find that entity
var entityPropName = propName.Split('.')[0];
var otherPropName = propName.Split('.')[1];
SetEntityValue(entityType, entity, entityPropName, otherPropName, value);
}
// TODO: Need configuration options:
else if (propName.EndsWith("ID") || propName.EndsWith("Id"))
{
var fieldName = _configuration.GetFieldName(dataFile.EntityName, propName);
var entityPropName = fieldName.Substring(0, fieldName.Length - 2);
var otherPropName = fieldName.Substring(fieldName.Length - 2);
SetEntityValue(entityType, entity, entityPropName, otherPropName, value);
}
else
{
// It's a property value, so set it
var fieldName = _configuration.GetFieldName(dataFile.EntityName, propName);
SetPropertyValue(entityType, entity, fieldName, value);
}
}
entities.Add(entity);
// Save changes after each entity so that we the IDs are inserted in the same order as the data file
// That means we can refer to things by their IDs in the data files
try
{
_db.Save(entity);
}
catch (Exception ex)
{
throw new Exception($"Error adding {entityType}", ex);
}
_configuration.OnEntityAdded(_db, dataFile.EntityName, entity, line);
// Save changes again, just in case the user did something in _configuration.OnEntityAdded, above
try
{
_db.Save(entity);
}
catch (Exception ex)
{
throw new Exception($"Error saving {entityType}", ex);
}
}
_configuration.OnEntitiesSaved(_db, dataFile.EntityName, entities, dataFile);
}
/// <summary>
/// Called when a set of entities has been saved to the database.
/// </summary>
/// <param name="db">The database.</param>
/// <param name="entityName">Name of the entity.</param>
/// <param name="entities">The entities.</param>
/// <param name="file">The file.</param>
public virtual void OnEntitiesSaved(Database db, string entityName, List <object> entities, TestDataFile file)
{
}