/// <inheritdoc />
public virtual SqlQuery GetUpSert(TEntity entity)
{
var properties = (IsIdentity ? SqlProperties.Where(p => !p.PropertyName.Equals(IdentitySqlProperty.PropertyName, StringComparison.OrdinalIgnoreCase))
: SqlProperties).ToList();
if (HasUpdatedAt)
{
UpdatedAtProperty.SetValue(entity, DateTime.UtcNow);
}
if (HasModifiedAt)
{
ModifiedAtProperty.SetValue(entity, DateTime.Now);
}
var query = new SqlQuery(entity);
var valueFields = string.Join(", ", KeySqlProperties.Select(p => " @" + p.PropertyName));
var selectFields = string.Join(", ", KeySqlProperties.Select(p => p.PropertyName));
var where = string.Join(" AND ", KeySqlProperties.Select(p => "target." + p.ColumnName + " = @" + p.PropertyName));
//override where if we have attributes
if (KeyUpsertSqlProperties.Any())
{
where = string.Join(" AND ", KeyUpsertSqlProperties.Select(p => "target." + p.ColumnName + " = @" + p.PropertyName));
valueFields = string.Join(", ", KeyUpsertSqlProperties.Select(p => " @" + p.PropertyName));
selectFields = string.Join(", ", KeyUpsertSqlProperties.Select(p => p.PropertyName));
}
//exclude update at when has modified is enabled
var update = string.Empty;
if (HasModifiedAt)
{
update = "UPDATE SET " +
string.Join(", ", properties.Where(e => e.PropertyName != UpdatedAtProperty?.Name)
.Select(p => p.ColumnName + " = @" + p.PropertyName));
}
else
{
//exclude both modified and updated at
update = "UPDATE SET " +
string.Join(", ", properties.Where(e => e.PropertyName != UpdatedAtProperty?.Name && e.PropertyName != ModifiedAtProperty?.Name)
.Select(p => p.ColumnName + " = @" + p.PropertyName));
}
var insert = "INSERT "
+ "(" + string.Join(", ", properties.Select(p => p.ColumnName)) + ")" // columNames
+ " VALUES (" + string.Join(", ", properties.Select(p => "@" + p.PropertyName)) + ")"; // values
query.SqlBuilder.Append(
$"MERGE {TableName} AS target USING (SELECT {valueFields}) AS source ({selectFields}) ON ({where}) WHEN MATCHED THEN {update} WHEN NOT MATCHED THEN {insert} OUTPUT Inserted.{KeySqlProperties.First().PropertyName}; ");
return(query);
}
