private static void ReadOracle(Object item, DbDataReader dr, int id, PropertyModel info)
{
object value = null;
var typeName = dr.GetDataTypeName(id);
if (string.Compare(typeName, "clob", true) == 0 || string.Compare(typeName, "nclob", true) == 0)
{
var temp = BaseEmit.Invoke(dr, dr.GetType().GetMethod("GetOracleClob"), new object[] { id });
if (temp != null)
{
value = BaseEmit.Get(temp, "Value");
BaseEmit.Invoke(temp, temp.GetType().GetMethod("Close"), null);
BaseEmit.Invoke(temp, temp.GetType().GetMethod("Dispose"), null);
}
}
else if (string.Compare(typeName, "blob", true) == 0)
{
var temp = BaseEmit.Invoke(dr, dr.GetType().GetMethod("GetOracleBlob"), new object[] { id });
if (temp != null)
{
value = BaseEmit.Get(temp, "Value");
BaseEmit.Invoke(temp, temp.GetType().GetMethod("Close"), null);
BaseEmit.Invoke(temp, temp.GetType().GetMethod("Dispose"), null);
}
}
else
{
value = dr.GetValue(id);
}
if (!dr.IsDBNull(id))
{
BaseEmit.Set(item, info.Name, value);
}
}
public static bool GetResult(string code, string references = null)
{
//动态编译
var compiler = new CSharpCodeProvider().CreateCompiler();
var param = new CompilerParameters();
param.ReferencedAssemblies.Add("System.dll");
param.ReferencedAssemblies.Add("System.Core.dll");
param.ReferencedAssemblies.Add("mscorlib.dll");
var assembly = AppDomain.CurrentDomain.GetAssemblies().ToList().Find(a => a.FullName.Split(',')[0] == references);
if (assembly == null)
{
assembly = Assembly.Load(references);
}
param.ReferencedAssemblies.Add(assembly.Location);
param.GenerateExecutable = false;
param.GenerateInMemory = true;
var result = compiler.CompileAssemblyFromSource(param, GetCode(code, references));
if (result.Errors.HasErrors)
{
var error = new StringBuilder();
error.AppendFormat("code:{0},error info:", GetCode(code));
foreach (CompilerError info in result.Errors)
{
error.Append(info.ErrorText);
}
BaseLog.SaveLog(error.ToString(), "DynamicCompiler");
return(false);
}
else
{
assembly = result.CompiledAssembly;
var instance = assembly.CreateInstance("DynamicCode.Condition");
var method = instance.GetType().GetMethod("OutPut");
return((bool)BaseEmit.Invoke(instance, method, null));
}
}
/// <summary>
/// 解析表达式
/// </summary>
/// <param name="exp"></param>
/// <param name="isRight"></param>
/// <returns></returns>
private static string RouteExpressionHandler(ConfigModel config, Expression exp, ExpressionType expType, ref List <string> leftList, ref List <string> rightList, ref List <System.Type> typeList, ref StringBuilder sb, ref string strType, ref int i, bool isRight = false)
{
var isReturnNull = false;
if (exp is BinaryExpression)
{
BinaryExpression be = (BinaryExpression)exp;
return(BinaryExpressionHandler(config, be.Left, be.Right, be.NodeType, ref leftList, ref rightList, ref typeList, ref sb, ref strType, ref i, isRight));
}
else if (exp is MemberExpression)
{
if ((exp as MemberExpression).Expression is ParameterExpression)
{
return((exp as MemberExpression).Member.Name);
}
else
{
if (Expression.Lambda(exp).Compile().DynamicInvoke() == null)
{
typeList.Add("".GetType());
}
else
{
typeList.Add(Expression.Lambda(exp).Compile().DynamicInvoke().GetType());
}
return(Expression.Lambda(exp).Compile().DynamicInvoke().ToStr());
}
}
else if (exp is NewArrayExpression)
{
NewArrayExpression naExp = (NewArrayExpression)exp;
StringBuilder sbArray = new StringBuilder();
foreach (Expression expression in naExp.Expressions)
{
sbArray.AppendFormat(",{0}", RouteExpressionHandler(config, expression, expType, ref leftList, ref rightList, ref typeList, ref sb, ref strType, ref i, isRight));
}
return(sbArray.Length == 0 ? "" : sbArray.Remove(0, 1).ToString());
}
else if (exp is MethodCallExpression)
{
if (isRight)
{
typeList.Add(Expression.Lambda(exp).Compile().DynamicInvoke().GetType());
return(Expression.Lambda(exp).Compile().DynamicInvoke().ToStr());
}
else
{
isRight = false;
try
{
var asName = "";
var meExp = (MethodCallExpression)(exp.ReduceExtensions().Reduce());
#region 表别名
if (meExp.Object != null)
{
if (meExp.Object is MemberExpression && (meExp.Object as MemberExpression).Expression is ParameterExpression)
{
asName = string.Format("{0}.", ((meExp.Object as MemberExpression).Expression as ParameterExpression).Name);
}
else if (meExp.Object is UnaryExpression)
{
asName = string.Format("{0}.", (((meExp.Object as UnaryExpression).Operand as MemberExpression).Expression as ParameterExpression).Name);
}
}
#endregion
if (meExp.Object is MemberExpression && !string.IsNullOrEmpty(asName))
{
#region system的方法转sql的系统函数
var mMethod = meExp.Method.Name;
var mName = ((MemberExpression)meExp.Object).Member.Name;
var mValue = "";
var mStar = "";
var mLength = "";
var mCount = 0;
meExp.Arguments.ToList().ForEach(a =>
{
mCount++;
mValue = Expression.Lambda(a).Compile().DynamicInvoke().ToString();
if (meExp.Arguments.Count == 2)
{
if (mCount == 1)
{
mStar = Expression.Lambda(a).Compile().DynamicInvoke().ToString();
}
if (mCount == 2)
{
mLength = Expression.Lambda(a).Compile().DynamicInvoke().ToString();
}
}
});
if (string.Compare(mMethod, "contains", true) == 0)
{
sb.AppendFormat(" {2}{0} like {3}{0}{1}", mName, i, asName, config.Flag);
leftList.Add(mName);
rightList.Add(string.Format("%{0}%", mValue));
i++;
}
else if (string.Compare(mMethod, "endswith", true) == 0)
{
sb.AppendFormat(" {2}{0} like {3}{0}{1}", mName, i, asName, config.Flag);
leftList.Add(mName);
rightList.Add(string.Format("%{0}", mValue));
}
else if (string.Compare(mMethod, "startswith", true) == 0)
{
sb.AppendFormat(" {2}{0} like {3}{0}{1}", mName, i, asName, config.Flag);
leftList.Add(mName);
rightList.Add(string.Format("{0}%", mValue));
i++;
}
else if (string.Compare(mMethod, "substring", true) == 0)
{
var tempType = "";
if (expType == ExpressionType.Goto)
{
tempType = "=";
}
else
{
tempType = ExpressionTypeCast(expType);
}
if (config.DbType == DataDbType.SqlServer)
{
sb.AppendFormat(" substring({4}{0},{2},{3}) {6} {5}{0}{1}", mName, i, mStar, mLength, asName, config.Flag, tempType);
}
else if (config.DbType == DataDbType.Oracle || config.DbType == DataDbType.MySql || config.DbType == DataDbType.DB2)
{
sb.AppendFormat(" substr({4}{0},{2},{3}) {6} {5}{0}{1}", mName, i, mStar, mLength, asName, config.Flag, tempType);
}
leftList.Add(mName);
i++;
}
else if (string.Compare(mMethod, "toupper", true) == 0)
{
var tempType = "";
if (expType == ExpressionType.Goto)
{
tempType = "=";
}
else
{
tempType = ExpressionTypeCast(expType);
}
sb.AppendFormat(" upper({0}{1}) {4} {2}{1}{3}", asName, mName, config.Flag, i, tempType);
leftList.Add(mName);
i++;
}
else if (string.Compare(mMethod, "CompareTo", true) == 0)
{
var tempType = "";
if (expType == ExpressionType.Goto)
{
tempType = "=";
}
else
{
tempType = ExpressionTypeCast(expType);
}
sb.AppendFormat(" upper({0}{1}) {4} upper({2}{1}{3})", asName, mName, config.Flag, i, tempType);
leftList.Add(mName);
rightList.Add(mValue.ToString());
i++;
}
else if (string.Compare(mMethod, "tolower", true) == 0)
{
var tempType = "";
if (expType == ExpressionType.Goto)
{
tempType = "=";
}
else
{
tempType = ExpressionTypeCast(expType);
}
sb.AppendFormat(" lower({0}{1}) {4} {2}{1}{3}", asName, mName, config.Flag, i, tempType);
leftList.Add(mName);
i++;
}
#endregion
}
if (meExp.Object == null && meExp.Method.Name == "Contains" && meExp.Arguments.Count == 2)
{
#region array.Contains
var array = Expression.Lambda(meExp.Arguments[0]).Compile().DynamicInvoke() as Array;
var mName = (meExp.Arguments[1] as MemberExpression).Member.Name;
asName = string.Format("{0}.", ((meExp.Arguments[1] as MemberExpression).Expression as ParameterExpression).Name);
sb.AppendFormat(" {0}{1} in (", asName, mName);
for (int ary = 0; ary < array.Length; ary++)
{
sb.AppendFormat("{0}{1}{2},", config.Flag, mName, i);
leftList.Add(mName);
rightList.Add(array.GetValue(ary).ToStr());
i++;
}
sb.Remove(sb.Length - 1, 1);
sb.Append(")");
#endregion
}
if (string.IsNullOrEmpty(asName) && meExp.Method.Name == "Contains" && meExp.Arguments.Count == 1)
{
#region list.Contains
var mName = (meExp.Arguments[0] as MemberExpression).Member.Name;
asName = string.Format("{0}.", ((meExp.Arguments[0] as MemberExpression).Expression as ParameterExpression).Name);
var model = Expression.Lambda(meExp.Object).Compile().DynamicInvoke();
var count = (int)BaseEmit.Invoke(model, model.GetType().GetMethod("get_Count"), null);
sb.AppendFormat(" {0}{1} in (", asName, mName);
for (var j = 0; j < count; j++)
{
sb.AppendFormat("{0}{1}{2},", config.Flag, mName, i);
leftList.Add(mName);
rightList.Add(BaseEmit.Invoke(model, model.GetType().GetMethod("get_Item"), new object[] { j }).ToStr());
i++;
}
sb.Remove(sb.Length - 1, 1);
sb.Append(")");
#endregion
}
if (isReturnNull)
{
return("");
}
else
{
return(sb.ToString());
}
}
catch
{
return("");
}
}
}
else if (exp is ConstantExpression)
{
typeList.Add("".GetType());
ConstantExpression cExp = (ConstantExpression)exp;
if (cExp.Value == null)
{
return("null");
}
else
{
return(cExp.Value.ToString());
}
}
else if (exp is UnaryExpression)
{
var ue = ((UnaryExpression)exp);
return(RouteExpressionHandler(config, ue.Operand, expType, ref leftList, ref rightList, ref typeList, ref sb, ref strType, ref i, isRight));
}
return(null);
}
/// <summary>
/// to list
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="dr"></param>
/// <param name="dbType"></param>
/// <returns></returns>
public static IList ToList(System.Type type, Object model, DbDataReader dr, ConfigModel config, List <string> field = null)
{
var list = Activator.CreateInstance(type);
var colList = new List <string>();
if (dr == null)
{
return(null);
}
if (dr.HasRows)
{
colList = GetCol(dr);
}
var propertyList = PropertyCache.GetPropertyInfo(model, config.IsPropertyCache);
while (dr.Read())
{
var item = Activator.CreateInstance(model.GetType());
if (field == null || field.Count == 0)
{
foreach (var info in propertyList)
{
if (!colList.Exists(a => string.Compare(a, info.Name, true) == 0))
{
continue;
}
if (info.PropertyType.IsGenericType && info.PropertyType.GetGenericTypeDefinition() != typeof(Nullable <>))
{
continue;
}
item = SetValue(item, dr, info, config);
}
}
else
{
for (var i = 0; i < field.Count; i++)
{
if (!colList.Exists(a => string.Compare(a, field[i], true) == 0))
{
continue;
}
if (propertyList.Exists(a => string.Compare(a.Name, field[i], true) == 0))
{
var info = propertyList.Find(a => string.Compare(a.Name, field[i], true) == 0);
item = SetValue(item, dr, info, config);
}
}
}
list.GetType().GetMethods().ToList().ForEach(m =>
{
if (m.Name == "Add")
{
BaseEmit.Invoke(list, m, new object[] { item });
}
});
}
return((IList)list);
}