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Which annotation should I use: @IdClass or @EmbeddedId
...and @EmbeddedId is when it comes to write HQL :
With @IdClass you write:
select e.name from Employee e
and with @EmbeddedId you have to write:
select e.employeeId.name from Employee e
You have to write more text for the same query. Some may argue that this differs from a more natural language l...
Removing highcharts.com credits link
... server locally for exporting the charts. When download as png/jpeg/pdf is selected from the top right corner of the chart , the Highcharts demo page is displayed. so how can stop that redirection can please help me
– Edit
Oct 12 '17 at 8:02
...
Find and replace strings in vim on multiple lines
...de (Ctrl+V)
VISUAL LINE mode (Shift+V, works best in your case)
Once you selected the lines to replace, type your command:
:s/<search_string>/<replace_string>/g
You'll note that the range '<,'> will be inserted automatically for you:
:'<,'>s/<search_string>/<re...
LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...它可以用于剪贴板中的内容不是文本的情形。
6． 全选(Select All)
从编辑菜单中选用“Select All”命令或按Ctrl+A组合键可选定当前窗口中的所有内容。
7． 匹配小括号(Match Parenthesis)
从编辑菜单中选用“Match Parenthesis”命令...
How does HTTP file upload work?
...
Let's take a look at what happens when you select a file and submit your form (I've truncated the headers for brevity):
POST /upload?upload_progress_id=12344 HTTP/1.1
Host: localhost:3000
Content-Length: 1325
Origin: http://localhost:3000
... other headers ...
Conten...
Authentication issue when debugging in VS2013 - iis express
...4 to get the project properties when you have the top level of the project selected. Do not right click on the project and select properties, this is something entirely different.
Change Anonymous Authentication to be Disabled and Windows Authentication to be Enabled.
Works like gravy :)
...
Why do we have to specify FromBody and FromUri?
...When a parameter has [FromBody], Web API uses the Content-Type header
to select a formatter. In this example, the content type is
"application/json" and the request body is a raw JSON string (not a
JSON object). At most one parameter is allowed to read from the
message body.
This shoul...
Is there any boolean type in Oracle databases?
...l (boolc char(1), booln number(1)); insert into testbool values ('Y', 1 ); select dump(boolc), dump(booln) from testbool; That CHAR is stored: Typ=96 Len=1: 89 and that NUMBER: Typ=2 Len=2: 193,2 At least in 12c, NUMBER(1) can use 2 bytes...
– phil_w
Apr 19 '1...
Multiple Indexes vs Multi-Column Indexes
...e multi-column index can be used for queries referencing all the columns:
SELECT *
FROM TableName
WHERE Column1=1 AND Column2=2 AND Column3=3
This can be looked up directly using the multi-column index. On the other hand, at most one of the single-column index can be used (it would have to look u...
ASP.NET MVC: Custom Validation by DataAnnotation
...ntext validationContext)
{
var properties = this.PropertyNames.Select(validationContext.ObjectType.GetProperty);
var values = properties.Select(p => p.GetValue(validationContext.ObjectInstance, null)).OfType<string>();
var totalLength = values.Sum(x => x.Lengt...