private string GenerateLamdaCode <TEntity>(SoulTableConditionDto condition, ColumnInfo column, out LambdaExpression dbLamda)
{
dbLamda = null;
var value = condition.Value;
var values = condition.Values;
var valuePath = $"{column.ValuePath}";
if (!string.IsNullOrEmpty(column.DisplayPath))
{
valuePath = column.DisplayPath;
}
if (column.IsPropertyColumn)
{
//自定义属性列的查询
//var dbFuncName = GetDbFunctionName(column.ColumnType);
//var p = Expression.Parameter(typeof(TEntity), "x");
//var _pExp = Expression.Constant($"$.{column.ColumnKey}", typeof(string));
//MemberExpression member = Expression.PropertyOrField(p, "Property");
//var expRes = Expression.Call(typeof(TEntity).GetEntityDbContextType().GetMethod(dbFuncName), member, _pExp);
//dbLamda = Expression.Lambda(expRes, p);
dbLamda = GeneratePropertyLamda <TEntity>(column.ColumnType, column.ColumnKey);
//valuePath = $"MasterDbContext.{dbFuncName}(Property,\"$.{column.ColumnKey}\")";
//基于数据库json字段的查询需要动态构建lamda
valuePath = "@0(it)";//@0之后会由dbLamda代入
}
Func <string, string> valueWrapp = inValue =>
{
string outValue = inValue;
if (column.ColumnType != ColumnTypes.Number)
{
outValue = $"\"{inValue}\"";
}
if (column.ColumnType == ColumnTypes.DateTime)
{
//日期类型需要转换
outValue = $"DateTime.Parse({outValue})";
}
return(outValue);
};
value = valueWrapp(value);
string code = "";
if (condition.Mode == "in")
{
//如果未传入筛选数据数组，直接返回
code = values.Count == 0?"1=1": string.Join(" Or ", values.Select(o => $"{valuePath}={valueWrapp(o)}"));
}
else if (condition.Mode == "date")
{
//日期的筛选
if (condition.Type == "all")
{
code = "1=1";
}
else if (condition.Type == "specific")
{
code = $"{valuePath}={value}";
}
else
{
var dateTimeValues = GetDateTimeValuesByIdentifier(condition.Type);
code = $"{valuePath}>={valueWrapp(dateTimeValues.startDate.ToString())} && {valuePath}<={valueWrapp(dateTimeValues.endDate.ToString())}";
}
}
else
{
switch (condition.Type)
{
case "eq":
code = $"{valuePath}={value}";
break;
case "ne":
code = $"{valuePath}!={value}";
break;
case "gt":
code = $"{valuePath}>{value}";
break;
case "ge":
code = $"{valuePath}>={value}";
break;
case "lt":
code = $"{valuePath}<{value}";
break;
case "le":
code = $"{valuePath}<={value}";
break;
case "contain":
code = $"{valuePath}.Contains({value})";
break;
case "notContain":
code = $"!{valuePath}.Contains({value})";
break;
case "start":
code = $"{valuePath}.StartWith({value})";
break;
case "end":
code = $"{valuePath}.EndWith({value})";
break;
case "null":
code = $"{valuePath}=null";
break;
case "notNull":
code = $"{valuePath}!=null";
break;
}
}
return(code);
}
/// <summary>
/// ProjectSN.Contains("a") 或者 @1(it)="2"
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="condition"></param>
/// <param name="moduleInfo"></param>
/// <returns></returns>
private string GenerateLamdaCode <TEntity>(SoulTableConditionDto condition, ModuleInfo moduleInfo)
{
ColumnInfo column;
//需要判断是模块的筛选还是普通表格
if (moduleInfo != null)
{
column = moduleInfo.ColumnInfos.Where(o => o.ColumnKey.ToLower() == condition.Field?.ToLower() || o.ColumnKey.ToLower() + "_display" == condition.Field?.ToLower()).Single();
}
else
{
column = new ColumnInfo()
{
ColumnKey = condition.Field,
ColumnType = condition.Mode == "date" ? ColumnTypes.DateTime : ColumnTypes.Text,
ValuePath = condition.Field,
};
}
var value = condition.Value;
var values = condition.Values;
var valuePath = $"{column.ValuePath}"; //代表要查询的数据字段，可能是直接字段，如ProjectSN 或者是property中的数据,如MasterDbContext.GetJsonValueString(o.Property,"$.a")
if (!string.IsNullOrEmpty(column.DisplayPath)) //设置了displaypath的以displaypath为优先查询目标
{
valuePath = column.DisplayPath;
}
if (column.IsPropertyColumn)
{
//自定义属性列的查询
//var dbFuncName = DynamicPropertyHelper.GetDbFunctionName(column.ColumnType);
//var p = Expression.Parameter(typeof(TEntity), "x");
//var _pExp = Expression.Constant($"$.{column.ColumnKey}", typeof(string));
//MemberExpression member = Expression.PropertyOrField(p, "Property");
//var expRes = Expression.Call(typeof(TEntity).GetEntityDbContextType().GetMethod(dbFuncName), member, _pExp);
//dbLamda = Expression.Lambda(expRes, p);
var lambdaExpression = DynamicPropertyHelper.GeneratePropertyLamda <TEntity>(column.ColumnType, column.ColumnKey);
//valuePath = $"MasterDbContext.{dbFuncName}(Property,\"$.{column.ColumnKey}\")";
//基于数据库json字段的查询需要动态构建lamda
valuePath = $"@{_soulLamdaIndex++}(it)";//@0之后会由dbLamda代入
_lamdaList.Add(lambdaExpression);
}
Func <string, string> valueWrapp = inValue =>
{
string outValue = inValue;
if (column.ColumnType != ColumnTypes.Number)
{
outValue = $"\"{inValue}\"";
}
if (column.ColumnType == ColumnTypes.DateTime)
{
//日期类型需要转换
outValue = $"DateTime.Parse({outValue})";
}
return(outValue);
};
value = valueWrapp(value);
string code = "";
if (condition.Mode == "in")
{
//如果未传入筛选数据数组，直接返回
code = values.Count == 0 ? "1=1" : string.Join(" Or ", values.Select(o => $"{valuePath}={valueWrapp(o)}"));
code = $"({code})";
}
else if (condition.Mode == "date")
{
//日期的筛选
if (condition.Type == "all")
{
code = "1=1";
}
else if (condition.Type == "specific")
{
if (condition.Value.Length == 10)
{
//形如2020-01-01形式的日期比较
code = $"({valuePath}>={valueWrapp(condition.Value)} and {valuePath}<={valueWrapp(condition.Value + " 23:59:59")})";
}
else
{
code = $"{valuePath}={value}";
}
}
else
{
var dateTimeValues = GetDateTimeValuesByIdentifier(condition.Type);
code = $"{valuePath}>={valueWrapp(dateTimeValues.startDate.ToString())} && {valuePath}<={valueWrapp(dateTimeValues.endDate.ToString())}";
}
}
else
{
switch (condition.Type)
{
case "eq":
code = $"{valuePath}={value}";
break;
case "ne":
code = $"{valuePath}!={value}";
break;
case "gt":
code = $"{valuePath}>{value}";
break;
case "ge":
code = $"{valuePath}>={value}";
break;
case "lt":
code = $"{valuePath}<{value}";
break;
case "le":
code = $"{valuePath}<={value}";
break;
case "contain":
code = $"{valuePath}.Contains({value})";
break;
case "notContain":
code = $"!{valuePath}.Contains({value})";
break;
case "start":
code = $"{valuePath}.StartWith({value})";
break;
case "end":
code = $"{valuePath}.EndWith({value})";
break;
case "null":
code = $"{valuePath}=null";
break;
case "notNull":
code = $"{valuePath}!=null";
break;
}
}
return(code);
}
