/// <summary>
/// Parse dynamic tags
/// </summary>
/// <param name="statementConfig">The statement config.</param>
/// <param name="dynamic">The dynamic.</param>
/// <param name="sqlBuffer">The SQL buffer.</param>
/// <param name="isDynamic">if set to <c>true</c> [is dynamic].</param>
/// <param name="postParseRequired">if set to <c>true</c> [post parse required].</param>
/// <param name="statement">The statement.</param>
/// <returns></returns>
private bool ParseDynamicTags(
IConfiguration statementConfig,
IDynamicParent dynamic,
StringBuilder sqlBuffer,
bool isDynamic,
bool postParseRequired,
IStatement statement)
{
//具体文本的集合 可能是需要拼接成完整的SQL语句
ConfigurationCollection children = statementConfig.Children;
int count = children.Count;
for (int i = 0; i < count; i++)
{
IConfiguration child = children[i];
if (child.Type == ConfigConstants.ELEMENT_TEXT || child.Type == ConfigConstants.ELEMENT_CDATA)
{
//第一步处理 获取当前文本的一个值 并处理"\r\n"
string childValueString = child.Value;
if (statement.PreserveWhitespace)
{
childValueString = childValueString .Replace('\n', ' ').Replace('\r', ' ').Replace('\t', ' ').Trim();
}
//第二部处理 将处理的当前一个部分SQL语句放入到SqlText类中
SqlText sqlText = null;
if (postParseRequired)
{
sqlText = new SqlText();
sqlText.Text = childValueString;
}
else
{
//分析SQL语句中的参数 例如# # ,@{}等内部参数 最后的结果是一个语句保存 和 参数列表在SqlText类中
sqlText = InlineParameterMapParser.ParseInlineParameterMap(modelStore.DataExchangeFactory, statementConfig.Id, null, childValueString);
}
//将此次分析的SQL语句结果保存到dynamic类对象中 可能需要添加多次
dynamic.AddChild(sqlText);//按顺序放置 最后拼接即可
//sqlBuffer字符串拼接每一部分的sql语句 最后是当前节点的完整语句
sqlBuffer.Append(" " + childValueString);
}
else if (child.Type == ConfigConstants.ELEMENT_SELECTKEY || child.Type == ConfigConstants.ELEMENT_INCLUDE)
{
//此处没有处理代码
}
else
{
//从deSerializerFactory工厂类的字典serializerMap中获取对应的处理IDeSerializer类
IDeSerializer serializer = deSerializerFactory.GetDeSerializer(child.Type);//child.Type就是节点的名
if (serializer != null)
{
isDynamic = true;
SqlTag tag;
//当前child是一个element 进行解析
tag = serializer.Deserialize(child);
//添加到IList<ISqlChild> children中
dynamic.AddChild(tag);
if (child.Children.Count > 0)
{
//递归处理子节点 注意是子节点Tag了 递归下去 但sqlBuffer字符串一直是同一个
isDynamic = ParseDynamicTags(child, tag, sqlBuffer, isDynamic, tag.Handler.IsPostParseRequired, statement);
}
}
}
}
return isDynamic;
}
/// <summary>
/// Parse dynamic tags
/// </summary>
/// <param name="commandTextNode"></param>
/// <param name="dynamic"></param>
/// <param name="sqlBuffer"></param>
/// <param name="isDynamic"></param>
/// <param name="postParseRequired"></param>
/// <param name="statement"></param>
/// <returns></returns>
private bool ParseDynamicTags( XmlNode commandTextNode, IDynamicParent dynamic,
StringBuilder sqlBuffer, bool isDynamic, bool postParseRequired, IStatement statement)
{
XmlNodeList children = commandTextNode.ChildNodes;
int count = children.Count;
for (int i = 0; i < count; i++)
{
XmlNode child = children[i];
if ( (child.NodeType == XmlNodeType.CDATA) || (child.NodeType == XmlNodeType.Text) )
{
string data = child.InnerText.Replace('\n', ' ').Replace('\r', ' ').Replace('\t', ' '); //??
data = NodeUtils.ParsePropertyTokens(data, _configScope.Properties);
SqlText sqlText;
if (postParseRequired)
{
sqlText = new SqlText();
sqlText.Text = data.ToString();
}
else
{
sqlText = _paramParser.ParseInlineParameterMap(_configScope, null, data );
}
dynamic.AddChild(sqlText);
sqlBuffer.Append(data);
}
else if (child.Name == "include")
{
NameValueCollection prop = NodeUtils.ParseAttributes(child, _configScope.Properties);
string refid = NodeUtils.GetStringAttribute(prop, "refid");
XmlNode includeNode = (XmlNode)_configScope.SqlIncludes[refid];
if (includeNode == null)
{
String nsrefid = _configScope.ApplyNamespace(refid);
includeNode = (XmlNode)_configScope.SqlIncludes[nsrefid];
if (includeNode == null)
{
throw new ConfigurationException("Could not find SQL tag to include with refid '" + refid + "'");
}
}
isDynamic = ParseDynamicTags(includeNode, dynamic, sqlBuffer, isDynamic, false, statement);
}
else
{
string nodeName = child.Name;
IDeSerializer serializer = _deSerializerFactory.GetDeSerializer(nodeName);
if (serializer != null)
{
isDynamic = true;
SqlTag tag;
tag = serializer.Deserialize(child);
dynamic.AddChild(tag);
if (child.HasChildNodes)
{
isDynamic = ParseDynamicTags( child, tag, sqlBuffer, isDynamic, tag.Handler.IsPostParseRequired, statement );
}
}
}
}
return isDynamic;
}
/// <summary>
/// Parse dynamic tags
/// </summary>
/// <param name="statementConfig">The statement config.</param>
/// <param name="dynamic">The dynamic.</param>
/// <param name="sqlBuffer">The SQL buffer.</param>
/// <param name="isDynamic">if set to <c>true</c> [is dynamic].</param>
/// <param name="postParseRequired">if set to <c>true</c> [post parse required].</param>
/// <param name="statement">The statement.</param>
/// <returns></returns>
private bool ParseDynamicTags(
IConfiguration statementConfig,
IDynamicParent dynamic,
StringBuilder sqlBuffer,
bool isDynamic,
bool postParseRequired,
IStatement statement)
{
ConfigurationCollection children = statementConfig.Children;
int count = children.Count;
for (int i = 0; i < count; i++)
{
IConfiguration child = children[i];
if (child.Type == ConfigConstants.ELEMENT_TEXT || child.Type == ConfigConstants.ELEMENT_CDATA)
{
string childValueString = child.Value;
if (statement.PreserveWhitespace)
{
childValueString = childValueString
.Replace('\n', ' ')
.Replace('\r', ' ')
.Replace('\t', ' ')
.Trim();
}
SqlText sqlText = null;
if (postParseRequired)
{
sqlText = new SqlText();
sqlText.Text = childValueString;
}
else
{
sqlText = InlineParameterMapParser.ParseInlineParameterMap(modelStore.DataExchangeFactory, statementConfig.Id, null, childValueString);
}
dynamic.AddChild(sqlText);
sqlBuffer.Append(" " + childValueString);
}
else if (child.Type == ConfigConstants.ELEMENT_SELECTKEY || child.Type == ConfigConstants.ELEMENT_INCLUDE)
{ }
else
{
IDeSerializer serializer = deSerializerFactory.GetDeSerializer(child.Type);
if (serializer != null)
{
isDynamic = true;
SqlTag tag;
tag = serializer.Deserialize(child);
dynamic.AddChild(tag);
if (child.Children.Count > 0)
{
isDynamic = ParseDynamicTags(child, tag, sqlBuffer, isDynamic, tag.Handler.IsPostParseRequired, statement);
}
}
}
}
return isDynamic;
}
