public ISelectSqlBuilder Fields <T>(Action <ISelectFieldSelector <T> > selector, string tableName = null, string tableAlias = null)
{
var fieldSelector = new SelectFieldSelector <T>();
selector(fieldSelector);
SetTableName <T>(
() =>
{
if (string.IsNullOrEmpty(TableName) ||
!string.Equals(TableName, SqlBuilderHelper.GetTableName <T>(SchemaNamePrefix, tableName), StringExtensions.CurrentIgnoreCaseStringComparison))
{
return;
}
var alias = tableAlias.WithDefault(fieldSelector.GetFirstTableAlias(typeof(T)));
if (!string.IsNullOrEmpty(alias))
{
TableAlias = TableAlias.WithDefault(alias);
}
}, tableName, tableAlias);
FieldsList.AddRange(fieldSelector.Build());
return(this);
}
private ISelectSqlBuilder TypeJoin <TFrom, TTo>(string joinType, string fromField = null, string toField = null, string toTableAlias = null, string fromTableAlias = null,
string fromTableName = null,
string toTableName = null)
{
SetTableName <TFrom>(originalTableName: fromTableName, tableAlias: fromTableAlias);
if (string.IsNullOrEmpty(fromField))
{
fromField = SqlBuilderHelper.GetTableName <TTo>(null, toTableName) + "Id";
}
if (string.IsNullOrEmpty(toField))
{
toField = "Id";
}
var fromExpresstion = $"{GetTypeAlias<TFrom>(fromTableAlias, fromTableName)}.{fromField}";
Joins.Add(string.Format("{0} JOIN {1} {2} ON {3} = {2}.{4}",
joinType.ToUpper(),
SqlBuilderHelper.GetTableName <TTo>(SchemaNamePrefix, toTableName),
GetTypeAlias <TTo>(toTableAlias, toTableName),
fromExpresstion,
toField));
return(this);
}
public string Build()
{
var sql = $"DELETE FROM {SqlBuilderHelper.GetTableName<TClass>(SchemaNamePrefix, TableName)}";
if (Wheres.Count > 0)
{
var where = string.Join(" AND ", Wheres);
sql = $"{sql} WHERE {@where}";
}
return(sql);
}
private void SetTableName <T>(Action additionAction = null, string originalTableName = null)
{
if (!string.IsNullOrEmpty(TableName))
{
additionAction?.Invoke();
return;
}
TableName = SqlBuilderHelper.GetTableName <T>(SchemaNamePrefix, originalTableName);
TableAlias = SqlBuilderHelper.GetAliasForType <T>();
additionAction?.Invoke();
}
