/// <summary>
/// 初始化 <see cref="JoinExpressionVisitor"/> 类的新实例
/// </summary>
public NpgJoinExpressionVisitor(IDbQueryProvider provider, TableAliasCache aliases, List <DbExpression> qJoin, NpgCommandType operationType)
: base(provider, aliases, null, false)
{
_qJoin = qJoin;
_aliases = aliases;
_operationType = operationType;
if (_operationType == NpgCommandType.DELETE)
{
_keywordName = "USING";
}
else if (_operationType == NpgCommandType.UPDATE)
{
_keywordName = "FROM";
}
}
/// <summary>
/// 实例化 <see cref="Builder" /> 的新实例
/// </summary>
public NpgDeleteDbCommandDefinition(IDbQueryProvider provider, TableAliasCache aliases, NpgCommandType operationType, List <IDbDataParameter> parameters)
: base(provider, aliases, parameters)
{
_provider = provider;
_aliases = aliases;
_onPhrase = _provider.CreateSqlBuilder(parameters);
_operationType = operationType;
if (_operationType == NpgCommandType.DELETE)
{
_keywordName = "USING";
}
else if (_operationType == NpgCommandType.UPDATE)
{
_keywordName = "FROM";
}
}
/// <summary>
/// 实例化 <see cref="Builder" /> 的新实例
/// </summary>
/// <param name="token">参数列表，NULL 或者 Parameters=NULL 时表示不使用参数化</param>
public NpgSelectInfoCommand(IDbQueryProvider provider, TableAliasCache aliases, NpgCommandType operationType, ParserToken token)
: base(provider, aliases, token)
{
_provider = provider;
_aliases = aliases;
_onPhrase = _provider.CreateSqlBuilder(token);
_operationType = operationType;
if (_operationType == NpgCommandType.DELETE)
{
_keywordName = "USING";
}
else if (_operationType == NpgCommandType.UPDATE)
{
_keywordName = "FROM";
}
}
