private static string ConstructLinqFilterExpression(JQGrid grid, Util.SearchArguments args)
{
JQGridColumn jQGridColumn = grid.Columns.Find((JQGridColumn c) => c.DataField == args.SearchColumn);
if (jQGridColumn == null)
{
throw new Exception("JqGridColumn ûÓÐÉèÖÃ");
}
if (jQGridColumn.DataType == null)
{
throw new DataTypeNotSetException("JQGridColumn.DataType must be set in order to perform search operations.");
}
string filterExpressionCompare = (jQGridColumn.DataType == typeof(string)) ? "{0} {1} \"{2}\"" : "{0} {1} {2}";
if (jQGridColumn.DataType == typeof(DateTime))
{
if (!string.IsNullOrEmpty(args.SearchString))
{
DateTime dateTime = DateTime.Parse(args.SearchString);
string str = string.Format("({0},{1},{2},{3},{4},{5})", dateTime.Year, dateTime.Month, dateTime.Day, dateTime.Hour, dateTime.Minute, dateTime.Second);
filterExpressionCompare = "{0} {1} DateTime" + str;
}
}
//string str2 = string.Format("{0} != null AND ", args.SearchColumn);
string str2 = "";
if (jQGridColumn.DataType == typeof(Guid))
{
filterExpressionCompare = "{0} {1} Guid(\"{2}\")";
//str2 = "";//string.Format("{0} != Guid.Empty AND ", args.SearchColumn);
}
return(str2 + Util.GetLinqExpression(filterExpressionCompare, args, jQGridColumn.SearchCaseSensitive, jQGridColumn.DataType));
}
public static string GetWhereClause(JQGrid grid, string filters, string ignoreFilterField)
{
JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
JsonMultipleSearch jsonMultipleSearch = javaScriptSerializer.Deserialize <JsonMultipleSearch>(filters);
string text = "";
foreach (MultipleSearchRule current in jsonMultipleSearch.rules)
{
if (string.IsNullOrEmpty(current.op))
{
continue;
}
if (!string.IsNullOrWhiteSpace(ignoreFilterField) && current.field == ignoreFilterField)
{
continue;
}
Util.SearchArguments args = new Util.SearchArguments
{
SearchColumn = current.field,
SearchString = current.data,
SearchOperation = Util.GetSearchOperationFromString(current.op)
};
string str = (text.Length > 0) ? (" " + jsonMultipleSearch.groupOp + " ") : "";
text = text + str + Util.ConstructLinqFilterExpression(grid, args);
}
return(text);
}
private JsonResult GetJsonResponse()
{
Guard.IsNotNull(this.DataSource, "DataSource");
IQueryable dataSource = this.DataSource as IQueryable;
Guard.IsNotNull(dataSource, "DataSource", "should implement the IQueryable interface.");
Guard.IsNotNullOrEmpty(this.DataField, "DataField", "should be set to the datafield (column) of the datasource to search in.");
SearchOperation isEqualTo = SearchOperation.IsEqualTo;
if (this.AutoCompleteMode == Trirand.Web.Mvc.AutoCompleteMode.BeginsWith)
{
isEqualTo = SearchOperation.BeginsWith;
}
else
{
isEqualTo = SearchOperation.Contains;
}
string str = HttpContext.Current.Request.QueryString["term"];
if (!string.IsNullOrEmpty(str))
{
Util.SearchArguments args = new Util.SearchArguments();
args.SearchColumn = this.DataField;
args.SearchOperation = isEqualTo;
args.SearchString = str;
dataSource = dataSource.Where(Util.ConstructLinqFilterExpression(this, args), new object[0]);
}
JsonResult result2 = new JsonResult();
result2.JsonRequestBehavior = JsonRequestBehavior.AllowGet;
result2.Data = dataSource.ToListOfString(this);
return(result2);
}
private static string GetLinqExpression(string filterExpressionCompare, Util.SearchArguments args, bool caseSensitive, Type dataType)
{
string text = caseSensitive ? args.SearchString : args.SearchString.ToLower();
string arg = args.SearchColumn;
if (dataType != null && dataType == typeof(string) && !caseSensitive)
{
arg = string.Format("{0}.ToLower()", args.SearchColumn);
}
switch (args.SearchOperation)
{
case SearchOperation.IsEqualTo:
if (string.IsNullOrEmpty(text))
{
return("1=1");
}
return(string.Format(filterExpressionCompare, arg, "=", text));
case SearchOperation.IsNotEqualTo:
return(string.Format(filterExpressionCompare, arg, "<>", text));
case SearchOperation.IsLessThan:
return(string.Format(filterExpressionCompare, arg, "<", text));
case SearchOperation.IsLessOrEqualTo:
return(string.Format(filterExpressionCompare, arg, "<=", text));
case SearchOperation.IsGreaterThan:
return(string.Format(filterExpressionCompare, arg, ">", text));
case SearchOperation.IsGreaterOrEqualTo:
return(string.Format(filterExpressionCompare, arg, ">=", text));
case SearchOperation.BeginsWith:
return(string.Format("{0}.StartsWith(\"{1}\")", arg, text));
case SearchOperation.DoesNotBeginWith:
return(string.Format("!{0}.StartsWith(\"{1}\")", arg, text));
case SearchOperation.EndsWith:
return(string.Format("{0}.EndsWith(\"{1}\")", arg, text));
case SearchOperation.DoesNotEndWith:
return(string.Format("!{0}.EndsWith(\"{1}\")", arg, text));
case SearchOperation.Contains:
return(string.Format("{0}.Contains(\"{1}\")", arg, text));
case SearchOperation.DoesNotContain:
return(string.Format("!{0}.Contains(\"{1}\")", arg, text));
}
throw new Exception("Invalid search operation.");
}
public static string GetWhereClause(JQGrid grid, string searchField, string searchString, string searchOper)
{
string text = " && ";
string text2 = "";
new Hashtable();
Util.SearchArguments args = new Util.SearchArguments
{
SearchColumn = searchField,
SearchString = searchString,
SearchOperation = Util.GetSearchOperationFromString(searchOper)
};
string str = (text2.Length > 0) ? text : "";
string str2 = Util.ConstructLinqFilterExpression(grid, args);
return(text2 + str + str2);
}
public static string GetWhereClause(JQGrid grid, NameValueCollection queryString)
{
string text = " && ";
string text2 = "";
new Hashtable();
foreach (JQGridColumn current in grid.Columns)
{
string text3 = queryString[current.DataField];
if (!string.IsNullOrEmpty(text3))
{
Util.SearchArguments args = new Util.SearchArguments
{
SearchColumn = current.DataField,
SearchString = text3,
SearchOperation = current.SearchToolBarOperation
};
string str = (text2.Length > 0) ? text : "";
string str2 = Util.ConstructLinqFilterExpression(grid, args);
text2 = text2 + str + str2;
}
}
return(text2);
}
internal static string ConstructLinqFilterExpression(JQAutoComplete autoComplete, Util.SearchArguments args)
{
Guard.IsNotNull(autoComplete.DataField, "DataField", "must be set in order to perform search operations. If you get this error from search/export method, make sure you setup(initialize) the grid again prior to filtering/exporting.");
string filterExpressionCompare = "{0} {1} \"{2}\"";
return(Util.GetLinqExpression(filterExpressionCompare, args, false, typeof(string)));
}
private JsonResult GetJsonResponse()
{
Guard.IsNotNull(this.DataSource, "DataSource");
IQueryable dataSource = this.DataSource as IQueryable;
Guard.IsNotNull(dataSource, "DataSource", "should implement the IQueryable interface.");
Guard.IsNotNullOrEmpty(this.DataField, "DataField", "should be set to the datafield (column) of the datasource to search in.");
SearchOperation isEqualTo = SearchOperation.IsEqualTo;
if (this.AutoCompleteMode == Trirand.Web.Mvc.AutoCompleteMode.BeginsWith)
{
isEqualTo = SearchOperation.BeginsWith;
}
else
{
isEqualTo = SearchOperation.Contains;
}
string str = HttpContext.Current.Request.QueryString["term"];
if (!string.IsNullOrEmpty(str))
{
Util.SearchArguments args = new Util.SearchArguments {
SearchColumn = this.DataField,
SearchOperation = isEqualTo,
SearchString = str
};
dataSource = dataSource.Where(Util.ConstructLinqFilterExpression(this, args), new object[0]);
}
return new JsonResult { JsonRequestBehavior = JsonRequestBehavior.AllowGet, Data = dataSource.ToListOfString(this) };
}
