/// <summary>
/// 初始化类<see cref="SqlExpressionVisitor"/>。
/// </summary>
/// <param name="sqlHelper">SQL操作特殊标识接口。</param>
/// <param name="typeMapper">类型匹配。</param>
/// <param name="memberTranslator">字段或属性转换接口。</param>
/// <param name="methodCallTranslator">方法调用转换接口。</param>
/// <param name="fragmentTranslator">代码段转换接口。</param>
protected SqlExpressionVisitor(ISqlHelper sqlHelper, ITypeMapper typeMapper, IMemberTranslator memberTranslator, IMethodCallTranslator methodCallTranslator, IExpressionFragmentTranslator fragmentTranslator)
{
_sqlHelper = sqlHelper;
_typeMapper = typeMapper;
_memberTranslator = memberTranslator;
_methodCallTranslator = methodCallTranslator;
_fragmentTranslator = fragmentTranslator;
Delimter = (info, _) => sqlHelper.DelimitIdentifier(info.Name);
}
/// <summary>
/// 初始化类<see cref="SqlExpressionVisitor"/>。
/// </summary>
/// <param name="sqlHelper">SQL操作特殊标识接口。</param>
/// <param name="typeMapper">类型匹配。</param>
/// <param name="memberTranslator">字段或属性转换接口。</param>
/// <param name="methodCallTranslator">方法调用转换接口。</param>
/// <param name="fragmentTranslator">代码段转换接口。</param>
/// <param name="schemaFunc">获取前缀代理方法。</param>
protected SqlExpressionVisitor(ISqlHelper sqlHelper, ITypeMapper typeMapper, IMemberTranslator memberTranslator, IMethodCallTranslator methodCallTranslator, IExpressionFragmentTranslator fragmentTranslator, Func <Type, string> schemaFunc)
{
_sqlHelper = sqlHelper;
_typeMapper = typeMapper;
_memberTranslator = memberTranslator;
_methodCallTranslator = methodCallTranslator;
_fragmentTranslator = fragmentTranslator;
Delimter = (info, type) => sqlHelper.DelimitIdentifier(info.Name, schemaFunc(type));
}
/// <summary> /// 格式化标识符，如列名称加上“[]”。 /// </summary> /// <param name="name">标识字符串。</param> /// <returns>返回格式化后的字符串。</returns> protected virtual string Delimit(string name) => SqlHelper.DelimitIdentifier(name, GetAlias(typeof(TModel)));