/// <summary>
/// 预处理：字段值－字典
/// </summary>
/// <param name="builder">构造缓存。</param>
/// <param name="name">字段名称。</param>
/// <param name="nodeValue">值包装</param>
/// <param name="i">顺序。</param>
/// <param name="pIndex">参数顺序。</param>
/// <returns>返回是否过滤。</returns>
protected virtual bool PreFieldValue_Dictionary(System.Text.StringBuilder builder, string name, NoSQL.NodeValue nodeValue, ref int i, ref int pIndex)
{
if (nodeValue.Type == NoSQL.NodeValueTypes.Null)
{
return(false);
}
foreach (object item in (System.Collections.IEnumerable)nodeValue.Value)
{
string key = FastWrapper.Get(item, "Key") as string;
if (string.IsNullOrEmpty(key))
{
continue;
}
NoSQL.NodeValue value = new NoSQL.NodeValue(FastWrapper.Get(item, "Value"));
if (
string.Equals(key, "$add", System.StringComparison.OrdinalIgnoreCase) ||
string.Equals(key, "$+", System.StringComparison.OrdinalIgnoreCase))
{
i++;
if (i > 1)
{
builder.AppendLine(",");
}
builder.AppendFormat(" {0}={0}+@p{1}", PreName(name), ++pIndex);
_fields[name] = value.Value;
return(true);
}
else if (
string.Equals(key, "$minus", System.StringComparison.OrdinalIgnoreCase) ||
string.Equals(key, "$-", System.StringComparison.OrdinalIgnoreCase))
{
i++;
if (i > 1)
{
builder.AppendLine(",");
}
builder.AppendFormat(" {0}={0}-@p{1}", PreName(name), ++pIndex);
_fields[name] = value.Value;
return(true);
}
else if (
string.Equals(key, "$now", System.StringComparison.OrdinalIgnoreCase))
{
i++;
if (i > 1)
{
builder.AppendLine(",");
}
builder.Append(" ").Append(PreName(name)).Append('=').Append(DateTimeNowGrammar());
_fields.Remove(name);
return(true);
}
}
return(false);
}
/// <summary>
/// 预处理：字段值
/// </summary>
/// <param name="builder">构造缓存。</param>
/// <param name="name">字段名称。</param>
/// <param name="value">字段值。</param>
/// <param name="i">顺序。</param>
/// <param name="pIndex">参数顺序。</param>
/// <returns>返回是否过滤。</returns>
protected virtual bool PreFieldValue(System.Text.StringBuilder builder, string name, object value, ref int i, ref int pIndex)
{
var p = value as CommandParameter;
NoSQL.NodeValue nodeValue = new NoSQL.NodeValue(p == null ? value : p.Value);
if (nodeValue.Type == NoSQL.NodeValueTypes.Dictionary)
{
return(PreFieldValue_Dictionary(builder, name, nodeValue, ref i, ref pIndex));
}
if (nodeValue.Type == NoSQL.NodeValueTypes.String)
{
return(PreFieldValue_String(builder, name, nodeValue, ref i, ref pIndex));
}
return(false);
}
/// <summary>
/// 预处理：字段值－文本
/// </summary>
/// <param name="builder">构造缓存。</param>
/// <param name="name">字段名称。</param>
/// <param name="nodeValue">值包装</param>
/// <param name="i">顺序。</param>
/// <param name="pIndex">参数顺序。</param>
/// <returns>返回是否过滤。</returns>
protected virtual bool PreFieldValue_String(System.Text.StringBuilder builder, string name, NoSQL.NodeValue nodeValue, ref int i, ref int pIndex)
{
string text = ((string)nodeValue.Value)?.Trim();
if (string.IsNullOrEmpty(text))
{
return(false);
}
if (text.StartsWith("{") && text.EndsWith("}"))
{
return(PreFieldValue_Dictionary(builder, name, new NoSQL.NodeValue(JSON.Parse(text)), ref i, ref pIndex));
}
return(false);
}
