protected override System.Linq.Expressions.Expression VisitMemberAccess(System.Linq.Expressions.MemberExpression m)
{
if (m.Expression is System.Linq.Expressions.ParameterExpression)
{
string text = string.Empty;
MemberInfo memberInfo = m.Member;
if (memberInfo != null)
{
this._CurrentMemberInfo = memberInfo;
this._CurrentMemberType = m.Type;
Type valueType = memberInfo.ReflectedType;
DMSTableKeys key = this.TableKeys.Where(q => q.AssemblyQualifiedName == valueType.AssemblyQualifiedName).LastOrDefault();
if (key != null && (this.ExcuteType == DMSExcuteType.SELECT ||
this.ExcuteType == DMSExcuteType.UPDATE_WHERE ||
this.ExcuteType == DMSExcuteType.INSERT_SELECT))
{
text = key.TableSpecialName;
if (this.SplitExpression.TableMapping.TokenFlag == true)
{
text = this.Provider.BuildColumnName(text);
}
this._strSql.Append(text);
this._strSql.Append(this.Provider.TableToken);
}
text = GetMemberInfoName(memberInfo.Name);
if (this.SplitExpression.TableMapping.TokenFlag == true)
{
text = this.Provider.BuildColumnName(text);
}
_strSql.Append(text);
}
return(m);
}
else if (m.Expression is System.Linq.Expressions.MemberExpression)
{
//q.UserName.Length
string name = m.Member.Name;
if (MemberProperties.ContainsKey(name))
{
this.MethodFunc(MemberProperties[name], m.Expression);
}
return(m);
}
return(base.VisitMemberAccess(m));
}
/// <summary>
///
/// </summary>
/// <param name="tableSpecialName"></param>
/// <param name="resultType"></param>
public virtual void AnalyzeExpressionSelectPacker(string tableSpecialName, Type resultType)
{
StringBuilder stringBuilder = new StringBuilder();
resultSql.Insert(0, "(");
resultSql.Append(")");
DMSTableKeys lastTableKeys = new DMSTableKeys()
{
TableName = resultType.AssemblyQualifiedName,
AssemblyQualifiedName = resultType.AssemblyQualifiedName,
TableSpecialName = tableSpecialName,
};
this.DMSFrame.TableExpressioin.TableKeys.Add(lastTableKeys);
this.Clean();
}
private static void AnalyzeExpressionSelectPacker <T, TResult>(this DMS <T> dms)
where T : class
where TResult : class
{
//string key = string.Empty;
//int tableIndex = this.TableIndex;
dms.SplitExpression.DMSFrame = dms;
dms.AnalyzeExpressionSelect();
DMSTableKeys lastTableKeys = dms.TableExpressioin.TableKeys.LastOrDefault();
dms.SplitExpression.AnalyzeExpressionSelectPacker(lastTableKeys.TableSpecialName, typeof(TResult));
//this.splitExpt.DMSBase = this;
//this.splitExpt.AnalyzeExpressionSelect(this.JoinFlag, this.currentType, ref tableIndex, ref key, ref TableKeys);
////加上当前Type
//this.SelectKey = key;
//this.splitExpt.AnalyzeExpressionSelectPacker(this.JoinFlag, typeof(TResult), typeof(T), ref tableIndex, ref TableKeys);
//string str = this.splitExpt.ResultSql;
//this.TopTableKeys = TableKeys.LastOrDefault();
//this.TableIndex = tableIndex;
dms.TableExpressioin.JoinFlag = false;
}
/// <summary>
///
/// </summary>
public virtual void AnalyzeExpressionSelect()
{
List <DMSTableKeys> tableKeys = this.DMSFrame.TableExpressioin.TableKeys;
List <ParamInfo> paramList = this.ParamList;
if (paramList == null)
{
paramList = new List <ParamInfo>();
}
if (tableKeys == null)
{
tableKeys = new List <DMSTableKeys>();
}
else
{
this.DMSFrame.TableExpressioin.TableKeys = tableKeys;
}
this.DMSFrame.ParamIndex = paramList.Count;
StringBuilder strSql = new StringBuilder();
string ParamSql = string.Empty;
string tableSql = this.DMSFrame.TableExpressioin.VisitExpression(this.DMSFrame.DataType, this.DMSFrame.ExcuteType, this.DMSFrame.ParamIndex, ref ParamSql, ref ParamList);
if (this.DMSFrame.TableExpressioin.TableKeys.Count > 0)
{
tableKeys.AddRange(this.DMSFrame.TableExpressioin.TableKeys);
}
if (this.ParamList.Count > 0)
{
paramList.AddRange(this.ParamList);
}
if (tableKeys.Count != this.DMSFrame.TableExpressioin.TableKeys.Count)
{
DMSTableKeys lastTableKey = tableKeys.Where(q => q.TableName == this.DMSFrame.CurrentType.AssemblyQualifiedName).LastOrDefault();
if (lastTableKey != null)
{
resultSql.Append(this.DMSFrame.Provider.As);
resultSql.Append(lastTableKey.TableSpecialName);
}
}
this.DMSFrame.ParamIndex = paramList.Count;
this.DMSFrame.ColumnsExpressioin.TableKeys = tableKeys;
this.DMSFrame.WhereExpressioin.TableKeys = tableKeys;
this.DMSFrame.GroupByExpression.TableKeys = tableKeys;
this.DMSFrame.OrderByExpressioin.TableKeys = tableKeys;
this.DMSFrame.HavingExpression.TableKeys = tableKeys;
ParamSql = string.Empty;
string columnSql = this.DMSFrame.ColumnsExpressioin.VisitExpression(this.DMSFrame.DataType, this.DMSFrame.ExcuteType, this.DMSFrame.ParamIndex, ref ParamSql, ref ParamList);
this.MemberSql = ParamSql;
this.DMSFrame.ParamIndex = paramList.Count;
if (this.ParamList.Count > 0)
{
paramList.AddRange(this.ParamList);
}
ParamSql = string.Empty;
string whereSql = this.DMSFrame.WhereExpressioin.VisitExpression(this.DMSFrame.DataType, this.DMSFrame.ExcuteType, this.DMSFrame.ParamIndex, ref ParamSql, ref ParamList);
this.DMSFrame.ParamIndex = paramList.Count;
if (this.ParamList.Count > 0)
{
paramList.AddRange(this.ParamList);
}
if (this.resultSql.Length == 0)
{
strSql.Append(this.DMSFrame.Provider.Select);
if (this.DMSFrame.TableExpressioin.DistinctFlag)
{
strSql.Append(this.DMSFrame.Provider.Distinct);
this.DMSFrame.TableExpressioin.DistinctFlag = false;
}
strSql.Append(columnSql);
strSql.Append(this.DMSFrame.Provider.From);
}
strSql.Append(tableSql);
if (!string.IsNullOrEmpty(whereSql))
{
if (!tableSql.Trim().EndsWith(this.DMSFrame.Provider.On.Trim()))
{
strSql.Append(this.DMSFrame.Provider.Where);
}
strSql.Append(whereSql);
}
string groupby = this.DMSFrame.GroupByExpression.VisitExpression(this.DMSFrame.DataType, this.DMSFrame.ExcuteType, this.DMSFrame.ParamIndex, ref ParamSql, ref ParamList);
this.DMSFrame.ParamIndex = paramList.Count;
if (this.ParamList.Count > 0)
{
paramList.AddRange(this.ParamList);
}
string orderSql = this.DMSFrame.OrderByExpressioin.VisitExpression(this.DMSFrame.DataType, this.DMSFrame.ExcuteType, this.DMSFrame.ParamIndex, ref ParamSql, ref ParamList);
this.DMSFrame.ParamIndex = paramList.Count;
if (this.ParamList.Count > 0)
{
paramList.AddRange(this.ParamList);
}
string having = this.DMSFrame.HavingExpression.VisitExpression(this.DMSFrame.DataType, this.DMSFrame.ExcuteType, this.DMSFrame.ParamIndex, ref ParamSql, ref ParamList);
this.DMSFrame.ParamIndex = paramList.Count;
if (this.ParamList.Count > 0)
{
paramList.AddRange(this.ParamList);
}
if (resultSql.Length == 0)
{
if (!string.IsNullOrEmpty(groupby))
{
strSql.Append(this.DMSFrame.Provider.GroupBy + " ");
strSql.Append(groupby);
}
if (!string.IsNullOrEmpty(having))
{
strSql.Append(this.DMSFrame.Provider.Having + " ");
strSql.Append(having);
}
if (!string.IsNullOrEmpty(orderSql))
{
strSql.Append(this.DMSFrame.Provider.OrderBy + " ");
strSql.Append(orderSql);
}
resultSql = new StringBuilder(strSql.ToString());
}
else
{
resultSql.Append(" " + strSql.ToString());
strSql = new StringBuilder();
strSql.Append(this.DMSFrame.Provider.Select);
if (this.DMSFrame.TableExpressioin.DistinctFlag)
{
strSql.Append(this.DMSFrame.Provider.Distinct);
this.DMSFrame.TableExpressioin.DistinctFlag = false;
}
strSql.Append(columnSql);
strSql.Append(this.DMSFrame.Provider.From);
resultSql.Insert(0, strSql.ToString());
if (!string.IsNullOrEmpty(groupby))
{
resultSql.Append(this.DMSFrame.Provider.GroupBy + " ");
resultSql.Append(groupby);
}
if (!string.IsNullOrEmpty(having))
{
resultSql.Append(this.DMSFrame.Provider.Having + " ");
resultSql.Append(having);
}
if (!string.IsNullOrEmpty(orderSql))
{
resultSql.Append(this.DMSFrame.Provider.OrderBy + " ");
resultSql.Append(orderSql);
}
}
//分页需求
if (this.DMSFrame.OrderByExpressioin.SplitPagerFlag && this.DMSFrame.OrderByExpressioin.PageIndex > 0 && this.DMSFrame.OrderByExpressioin.PageSize > 0)
{
DMSTableKeys key = tableKeys.LastOrDefault();
if (key == null)
{
throw new DMSFrameException("tableKeys is null");
}
string tableKey = key.TableSpecialName;
if (this.TableMapping.TokenFlag == true)
{
tableKey = this.DMSFrame.Provider.BuildColumnName(tableKey);
}
this.AnalyzeExpressionPager(this.DMSFrame.OrderByExpressioin.SplitPagerFlag, this.DMSFrame.OrderByExpressioin.PageIndex, this.DMSFrame.OrderByExpressioin.PageSize, tableKey, orderSql);
this.DMSFrame.OrderByExpressioin.SplitPagerFlag = false;
#if DEBUG
System.Diagnostics.Debug.WriteLine(this.DMSFrame.SplitExpression.resultSqlCount.ToString());
#endif
}
this.BuildParameters(paramList);
}
protected override System.Linq.Expressions.Expression VisitParameter(System.Linq.Expressions.ParameterExpression p)
{
Type valueType = p.Type;
DMSTableKeys lastTableKeys = null;
bool isEntity = false;
string text = string.Empty;
if (valueType.IsClass)
{
if (this.JoinFlag && valueType.Name.StartsWith("<>f__AnonymousType"))
{
lastTableKeys = this.TableKeys.Where(q => q.AssemblyQualifiedName == valueType.AssemblyQualifiedName).FirstOrDefault();
if (lastTableKeys != null)
{
this._strSql.Append(lastTableKeys.TableSpecialName);
}
}
else if (valueType == typeof(DMSDataBase))
{
return(p);
}
else
{
isEntity = true;
text = p.Type.GetEntityName();
if (this.TableFunc != null)
{
text = this.TableFunc.Compile()(p.Type);
}
lastTableKeys = new DMSTableKeys()
{
TableName = text,
AssemblyQualifiedName = p.Type.AssemblyQualifiedName,
TableSpecialName = this.QutoTable + this.startIndex,
};
this.TableKeys.Add(lastTableKeys);
this.startIndex++;
}
}
if (isEntity)
{
string tableNames = string.Empty;
if (!string.IsNullOrEmpty(this.Provider.TableConfiguration.Author))
{
string author = this.Provider.TableConfiguration.Author;
if (this.SplitExpression.TableMapping.TokenFlag == true)
{
author = this.Provider.BuildColumnName(author);
}
_strSql.Append(author);
_strSql.Append(this.Provider.TableToken);
tableNames = author + this.Provider.TableToken;
}
else if (this._foundDMSDataBase)
{
_strSql.Append(this.Provider.TableToken);
this._foundDMSDataBase = false;
}
if (this.SplitExpression.TableMapping.TokenFlag == true)
{
text = this.Provider.BuildColumnName(text);
}
_strSql.Append(text + " ");
if (this.ExcuteType == DMSExcuteType.SELECT)
{
_strSql.Append(this.Provider.As + " ");
text = lastTableKeys.TableSpecialName;
if (this.SplitExpression.TableMapping.TokenFlag == true)
{
text = this.Provider.BuildColumnName(text);
}
_strSql.Append(text);
if (this.WithLock == true && this.Provider.TableConfiguration.WithLock == "true" && !string.IsNullOrEmpty(this.Provider.UnLock))
{
_strSql.Append(this.Provider.UnLock);
}
}
else if (this.ExcuteType == DMSExcuteType.UPDATE_WHERE)
{
_strSql.Append(this.Provider.As + " ");
text = lastTableKeys.TableSpecialName;
if (this.SplitExpression.TableMapping.TokenFlag == true)
{
text = this.Provider.BuildColumnName(text);
}
_strSql.Append(text);
_strSql.Append(",");
}
else if (this.ExcuteType == DMSExcuteType.INSERT_SELECT)
{
_strSql.Append(",");
}
}
else
{
_strSql.Append(text);
}
return(base.VisitParameter(p));
}