public CRLExpression.CRLExpression DealParame(CRLExpression.CRLExpression par1, string typeStr, out string typeStr2)
{
var par = par1.Data + "";
typeStr2 = typeStr;
//todo 非关系型数据库不参数化
if (dbContext.DataBaseArchitecture == DataBaseArchitecture.NotRelation)
{
return(par1);
}
if (par1.Data is CRLExpression.MethodCallObj)
{
var method = par1.Data as CRLExpression.MethodCallObj;
var _DBAdapter = DBAdapter.DBAdapterBase.GetDBAdapterBase(dbContext);
var dic = MethodAnalyze.GetMethos(_DBAdapter);
if (!dic.ContainsKey(method.MethodName))
{
throw new CRLException("LambdaQuery不支持方法" + method.MethodName);
}
int newParIndex = parIndex;
par = dic[method.MethodName](method, ref newParIndex, AddParame);
parIndex = newParIndex;
}
//字段会返回替换符
bool needPar = par1.Type == CRLExpression.CRLExpressionType.Value;//是否需要参数化处理
if (!needPar)
{
par1.Data = par;
return(par1);
}
if (needPar)
{
if (par.ToUpper() == "NULL")
{
typeStr2 = "";
if (typeStr == "=")
{
par = " IS NULL ";
}
else if (typeStr == "<>")
{
par = " IS NOT NULL ";
}
}
else
{
QueryParames.Add("par" + parIndex, par);
par = "@par" + parIndex;
parIndex += 1;
}
}
par1.Data = par;
return(par1);
}
CRLExpression.CRLExpression DealParame(CRLExpression.CRLExpression par1, string typeStr)
{
var par = par1.Data + "";
//typeStr2 = typeStr;
//todo 非关系型数据库不参数化
if (dbContext.DataBaseArchitecture == DataBaseArchitecture.NotRelation)
{
return(par1);
}
if (parIndex > 1000)
{
throw new CRLException("参数计数超过了1000,请确认数据访问对象没有被静态化");
}
switch (par1.Type)
{
case CRLExpression.CRLExpressionType.Value:
#region value
if (par1.Data == null)
{
par = __DBAdapter.IsNotFormat(typeStr != "=") + "null";
}
else
{
QueryParames.Add("par" + parIndex, par);
par = "@par" + parIndex;
parIndex += 1;
}
#endregion
break;
case CRLExpression.CRLExpressionType.MethodCall:
#region method
var method = par1.Data as CRLExpression.MethodCallObj;
var dic = MethodAnalyze.GetMethos(__DBAdapter);
if (!dic.ContainsKey(method.MethodName))
{
throw new CRLException("LambdaQuery不支持扩展方法" + method.MemberQueryName + "." + method.MethodName);
}
int newParIndex = parIndex;
par = dic[method.MethodName](method, ref newParIndex, AddParame);
parIndex = newParIndex;
#endregion
break;
}
par1.DataParamed = par;
return(par1);
}
/// <summary>
/// 返回方法调用拼接
/// </summary>
/// <param name="expression"></param>
/// <param name="memberName"></param>
/// <param name="argsIndex"></param>
/// <param name="remArgsIndex"></param>
/// <returns></returns>
string getSelectMethodCall(Expression expression, out string memberName, int argsIndex, bool remArgsIndex = true)
{
var cRLExpression = __Visitor.RouteExpressionHandler(expression);
memberName = "";
if (cRLExpression.Type == CRLExpression.CRLExpressionType.Value)
{
//值类型返回参数值
var parName = __DBAdapter.GetParamName("cons", __DbContext.parIndex);
__DbContext.parIndex += 1;
__Visitor.AddParame(parName, cRLExpression.Data);
//if (remArgsIndex)
//{
// newExpressionParame.Add(parName, argsIndex);
//}
return(parName);
}
var methodCallObj = cRLExpression.Data as CRLExpression.MethodCallObj;
memberName = methodCallObj.MethodName;
var dic = MethodAnalyze.GetMethos(__DBAdapter);
if (!dic.ContainsKey(methodCallObj.MethodName))
{
throw new CRLException("LambdaQuery不支持扩展方法" + methodCallObj.MemberQueryName + "." + methodCallObj.MethodName);
}
int newParIndex = __DbContext.parIndex;
var par = dic[methodCallObj.MethodName](methodCallObj, ref newParIndex, __Visitor.AddParame);
__DbContext.parIndex = newParIndex;
//if (remArgsIndex)
//{
// newExpressionParame[par] = argsIndex;
//}
return(par);
//return string.Format("{0}({1})", methodName, methodField);
}
CRLExpression.CRLExpression DealParame(CRLExpression.CRLExpression par1, string typeStr)
{
var par = par1.Data + "";
//typeStr2 = typeStr;
//todo 非关系型数据库不参数化
if (dbContext.DataBaseArchitecture == DataBaseArchitecture.NotRelation)
{
return(par1);
}
var a = parameDicList.TryGetValue(__DBAdapter.DBType, out string[] parameDic);
if (!a)
{
parameDic = new string[5000];
for (int i = 0; i < 5000; i++)
{
parameDic[i] = __DBAdapter.GetParamName("p", i);
}
parameDicList.TryAdd(__DBAdapter.DBType, parameDic);
}
if (parIndex >= 5000)
{
//MSSQL 参数最多2800
throw new Exception("参数计数超过了5000,请确认数据访问对象没有被静态化" + parIndex);
}
switch (par1.Type)
{
case CRLExpression.CRLExpressionType.Value:
#region value
if (par1.Data == null)
{
par = __DBAdapter.IsNotFormat(typeStr != "=") + "null";
}
else
{
if (SettingConfig.FieldParameName)
{
par1.DataParamed = par;
return(par1); //参数名按字段名
}
var _par = parameDic[parIndex];
AddParame(_par, par);
par = _par;
parIndex += 1;
}
#endregion
break;
case CRLExpression.CRLExpressionType.MethodCall:
#region method
var method = par1.Data as CRLExpression.MethodCallObj;
#region in优化 MSSQL内部已自动优化
var nodeType = method.ExpressionType;
/**
* if (dbContext.DataBaseArchitecture == DataBaseArchitecture.Relation && method.MethodName == "In" && lambdaQueryBase.__AutoInJoin > 5 && nodeType == ExpressionType.Equal)
* {
* var inArgs = method.Args[0] as System.Collections.IEnumerable;
* int _i = 0;
* Type innerType = null;
* var pars = new List<InJoin>();
* var batchNo = System.Guid.NewGuid().ToString().Replace("-", "");
* foreach (var a in inArgs)
* {
* _i += 1;
* if (innerType == null)
* {
* innerType = a.GetType();
* }
* var obj2 = new InJoin() { BatchNo = batchNo, V_String = "" };
* obj2.SetValue(innerType, a);
* pars.Add(obj2);
* }
* if (_i > lambdaQueryBase.__AutoInJoin)
* {
* QueryParames.Add("__batchNO", batchNo);
* var typeJoin = typeof(InJoin);
* var inJoinName = lambdaQueryBase.GetPrefix(typeJoin);
* var joinFormat = string.Format("{1}BatchNo=@__batchNO and {0}={1}V_{2}", method.MemberQueryName, inJoinName, innerType.Name);
* lambdaQueryBase.AddInnerRelation(new TypeQuery(typeJoin), JoinType.Inner, joinFormat);
* par1.DataParamed = "";
* var dbEx = DBExtendFactory.CreateDBExtend(dbContext);
* dbEx.CheckTableCreated(typeJoin);
* __DBAdapter.BatchInsert(pars);
* lambdaQueryBase.__RemoveInJionBatchNo = batchNo;
* return par1;
* }
* }
*/
#endregion
var dic = MethodAnalyze.GetMethos(__DBAdapter);
if (!dic.ContainsKey(method.MethodName))
{
throw new Exception("LambdaQuery不支持扩展方法" + method.MemberQueryName + "." + method.MethodName);
}
int newParIndex = parIndex;
par = dic[method.MethodName](method, ref newParIndex, AddParame);
parIndex = newParIndex;
#endregion
break;
}
par1.DataParamed = par;
return(par1);
}
public string RouteExpressionHandler(Expression exp, ExpressionType nodeType = ExpressionType.Equal)
{
if (exp is BinaryExpression)
{
BinaryExpression be = (BinaryExpression)exp;
return(BinaryExpressionHandler(be.Left, be.Right, be.NodeType));
}
else if (exp is MemberExpression)
{
//区分 属性表达带替换符{0} 变量值不带
MemberExpression mExp = (MemberExpression)exp;
if (mExp.Expression != null && mExp.Expression.NodeType == ExpressionType.Parameter) //like b.Name==b.Name1 或b.Name
{
var fieldName = mExp.Member.Name;
var type = mExp.Expression.Type;
var filed = TypeCache.GetProperties(type, true)[fieldName];
if (filed == null)
{
throw new Exception("类型 " + type.Name + "." + fieldName + " 不是数据库字段,请检查查询条件");
}
if (!string.IsNullOrEmpty(filed.VirtualField))//按虚拟字段
{
//如果没有使用$前辍
if (!filed.VirtualField.Contains("$"))
{
filed.VirtualField = "{VirtualField}" + filed.VirtualField;
}
return(filed.VirtualField);
}
var field = "{" + type.FullName + "}" + fieldName; //格式化为别名
if (nodeType == ExpressionType.Not) //like b=!b.IsNew
{
field += ExpressionTypeCast(nodeType) + 1;
}
return(field);
}
var obj = LambdaCompileCache.GetExpressionCacheValue(mExp);
if (obj is Enum)
{
obj = (int)obj;
}
return(obj + "");
}
else if (exp is NewArrayExpression)
{
#region 数组
NewArrayExpression naExp = (NewArrayExpression)exp;
StringBuilder sb = new StringBuilder();
foreach (Expression expression in naExp.Expressions)
{
sb.AppendFormat(",{0}", RouteExpressionHandler(expression));
}
return(sb.Length == 0 ? "" : sb.Remove(0, 1).ToString());
#endregion
}
else if (exp is MethodCallExpression)
{
MethodCallExpression mcExp = (MethodCallExpression)exp;
if (mcExp.Object is MemberExpression)
{
var mExp = mcExp.Object as MemberExpression;
if (mExp.Expression.NodeType != ExpressionType.Parameter)
{
//not like b.BarCode.Contains("abc")
//按变量或常量编译值
var obj = LambdaCompileCache.GetExpressionCacheValue(exp);
return(obj + "");
}
}
else if (mcExp.Object is ConstantExpression)
{
//var cExp = mcExp.Object as ConstantExpression;
//like b.BarCode == aa()
var obj = LambdaCompileCache.GetExpressionCacheValue(exp);
return(obj + "");
}
var _DBAdapter = DBAdapter.DBAdapterBase.GetDBAdapterBase(dbContext);
//var methodAnalyze = new CRL.LambdaQuery.MethodAnalyze(_DBAdapter);
var dic = MethodAnalyze.GetMethos(_DBAdapter);
#region 方法
//请扩展ExtensionMethod的方法
string methodName = mcExp.Method.Name;
parIndex += 1;
if (!dic.ContainsKey(methodName))
{
//return Expression.Lambda(exp).Compile().DynamicInvoke() + "";
throw new Exception("LambdaQuery不支持方法" + mcExp.Method.Name);
}
string field = "";
#region par
List <object> args = new List <object>();
if (mcExp.Object == null)
{
field = RouteExpressionHandler(mcExp.Arguments[0]);
}
else
{
field = mcExp.Object.ToString().Split('.')[1];
var mExpression = mcExp.Object as MemberExpression;
var type = mExpression.Expression.Type;
field = "{" + type.FullName + "}" + field;
var obj = LambdaCompileCache.GetExpressionCacheValue(mcExp.Arguments[0]);
args.Add(obj);
//args.Add(Expression.Lambda(mcExp.Arguments[0]).Compile().DynamicInvoke());
}
if (mcExp.Arguments.Count > 1)
{
var obj = LambdaCompileCache.GetExpressionCacheValue(mcExp.Arguments[1]);
args.Add(obj);
//args.Add(Expression.Lambda(mcExp.Arguments[1]).Compile().DynamicInvoke());
}
if (mcExp.Arguments.Count > 2)
{
var obj = LambdaCompileCache.GetExpressionCacheValue(mcExp.Arguments[2]);
args.Add(obj);
//args.Add(Expression.Lambda(mcExp.Arguments[2]).Compile().DynamicInvoke());
}
if (mcExp.Arguments.Count > 3)
{
var obj = LambdaCompileCache.GetExpressionCacheValue(mcExp.Arguments[3]);
args.Add(obj);
//args.Add(Expression.Lambda(mcExp.Arguments[3]).Compile().DynamicInvoke());
}
#endregion
int newParIndex = parIndex;
var result = dic[methodName](field, nodeType, ref newParIndex, AddParame, args.ToArray());
parIndex = newParIndex;
return(result);
#endregion
}
else if (exp is ConstantExpression)
{
#region 常量
ConstantExpression cExp = (ConstantExpression)exp;
if (cExp.Value == null)
{
return("null");
}
else
{
if (cExp.Value is Boolean)
{
return(Convert.ToInt32(cExp.Value).ToString());
}
else if (cExp.Value is Enum)
{
return(Convert.ToInt32(cExp.Value).ToString());
}
return(cExp.Value.ToString());
}
#endregion
}
else if (exp is UnaryExpression)
{
UnaryExpression ue = ((UnaryExpression)exp);
return(RouteExpressionHandler(ue.Operand, ue.NodeType));
}
else
{
throw new Exception("不支持此语法解析:" + exp);
}
}
