private QueryBuilderResult BuildSelect()
{
QueryBuilderResult result = new QueryBuilderResult();
StringBuilder sqlBuilder = new StringBuilder();
#region -> Generate Select SQL
if (SelectColumns != null && SelectColumns.Count > 0)
{
// select specific
sqlBuilder.Append($"select {string.Join(",", SelectColumns)} from {EntityName}");
}
else
{
// select all columns
sqlBuilder.Append($"select * from {EntityName}");
}
#endregion
#region -> Condition SQL
BuildCondition(sqlBuilder, result.Parameters);
#endregion
#region -> Order By
if (OrderBy != null)
{
sqlBuilder.Append($" order by {OrderBy.Column} {OrderBy.OrderBy} ");
}
#endregion
#region -> For Group By
if (GroupBy != null && GroupBy.Count > 0)
{
sqlBuilder.Append($" group by {string.Join(",", GroupBy)} ");
}
#endregion
#region -> Extra SQL
if (!string.IsNullOrEmpty(ExtraSql))
{
sqlBuilder.Append($" {ExtraSql} ");
}
#endregion
#region -> Generate
result.Sql = sqlBuilder.ToString().Trim();
if (EnableSnakeCase)
{
result.Sql = result.Sql.ToSnakeCase();
}
#endregion
return(result);
}
private QueryBuilderResult BuildUpdate()
{
QueryBuilderResult result = new QueryBuilderResult();
StringBuilder sqlBuilder = new StringBuilder();
sqlBuilder.Append($"update {EntityName} ");
#region -> For Set
if (_updateColumns.Count > 0)
{
List <string> setConditions = new List <string>();
foreach (var value in _updateColumns)
{
string columnName = value.Key;
if (EnableSnakeCase)
{
columnName = columnName.ToSnakeCase();
}
setConditions.Add($"{columnName}=@{columnName}");
result.Parameters.Add(columnName, value.Value);
}
// set value
sqlBuilder.Append(" SET " + string.Join(",", setConditions));
}
#endregion
#region -> Condition SQL
BuildCondition(sqlBuilder, result.Parameters);
#endregion
#region -> Extra SQL
if (!string.IsNullOrEmpty(ExtraSql))
{
sqlBuilder.Append($" {ExtraSql} ");
}
#endregion
#region -> Generate
result.Sql = sqlBuilder.ToString().Trim();
if (EnableSnakeCase)
{
result.Sql = result.Sql.ToSnakeCase();
}
#endregion
return(result);
}
public QueryBuilderResult Build(BuildType buildType)
{
QueryBuilderResult result = null;
switch (buildType)
{
case BuildType.Insert: { return(BuildInsert()); }
case BuildType.Update: { return(BuildUpdate()); }
case BuildType.Delete: { return(BuildDelete()); }
case BuildType.Select: { return(BuildSelect()); }
}
return(result);
}
private QueryBuilderResult BuildDelete()
{
QueryBuilderResult result = new QueryBuilderResult();
StringBuilder sqlBuilder = new StringBuilder();
sqlBuilder.Append($"delete from {EntityName} ");
#region -> Condition SQL
BuildCondition(sqlBuilder, result.Parameters);
#endregion
#region -> Generate
result.Sql = sqlBuilder.ToString().Trim();
if (EnableSnakeCase)
{
result.Sql = result.Sql.ToSnakeCase();
}
#endregion
return(result);
}
