private IEnumerable<FilterExpression> GetConditionExpressionCollection(
IEnumerable<Domain.Sql.DynamicRecord> originRecords,
IEnumerable<string> compoundKey,
AvailableValueConfiguration availableValueConfiguration)
{
var filters = new List<FilterExpression>();
foreach (var record in originRecords)
{
var filter = new FilterExpression(LogicalOperator.And);
foreach (var destinationAttribute in compoundKey)
{
var currentField =availableValueConfiguration.Fields.First(x => x.DestinationAttribute == destinationAttribute);
if (record.Values[currentField.OriginColumn] == null)
{
filter.AddCondition(new ConditionExpression(destinationAttribute, ConditionOperator.Null));
}
else if (currentField.DestinationType == DestinationType.DateTime)
{
filter.AddCondition(new ConditionExpression(destinationAttribute, ConditionOperator.On, record.Values[currentField.OriginColumn]));
}
else if (currentField.DestinationType == DestinationType.EntityReference)
{
filter.AddCondition(new ConditionExpression(destinationAttribute, ConditionOperator.On, null));
}
else
{
filter.AddCondition(new ConditionExpression(destinationAttribute, ConditionOperator.Equal, record.Values[currentField.OriginColumn]));
}
}
filters.Add(filter);
}
return filters;
}
private void Migrate(AvailableValueConfiguration availableValueConfiguration)
{
// Retrieve all records from Origin
var originRecords = this.dynamicRecordDao.RetrieveRecords(
availableValueConfiguration.OriginTable,
availableValueConfiguration.Fields.ToDictionary(x => x.OriginColumn, y => y.OriginType));
// Get records to Update
var compoundKey = availableValueConfiguration.Fields.Where(x => x.IsKey).Select(x => x.DestinationAttribute);
var filters = GetConditionExpressionCollection(originRecords, compoundKey, availableValueConfiguration);
var recordsToUpdate = this.entityDao.RetrieveExistingRecords(filters);
}
