Help with regular expression - DateTime validation in XSD

I have the following:

<xsd:restriction base="xsd:dateTime">
   <xsd:pattern value="[1-9][0-9]{3}\-.+T[^\.]+(Z|[\+\-].+)"/>
</xsd:restriction>

I then get an error when I use something like开发者_开发技巧 this: 2011-06-167T09:30:47.0Z or this:2011-06-16T09:30:47.0Z

Could you please help me figure out what is wrong with the datetime I am validating?

I do not control the XSD with the RegEx - all I can do is to make my dates comply with it.

Thanks!

[1-9][0-9]{3}-.+T[^.]+(Z|[+-].+)

(unnecessary escapes removed) fails because your test string doesn't fulfill the rules of the regex which are:

[1-9][0-9]{3} # match a four-digit number > 999        : 2011 
-             # dash                                   :     -
.+            # one or more unspecified characters     :      06-167
T             # a T                                    :            T 
[^.]+         # one or more characters except dot      :             09:30:47
(             # followed by either                     :
 Z            # a Z                                    :                     ???
|             # or                                     :
 [+-]         # a plus or minus sign                   :                     ???
 .+           # and one or more unspecified characters :
)

Your test string 2011-06-167T09:30:47.0Z does contain a dot before the Z (and there is no plus/minus sign that would allow the alternative to match) so the regex fails.

The question is: What are the rules you do need to follow? How are datetimes defined in your application?

You could try a non greedy matching, perhaps that solves it:

<xsd:pattern value="[1-9][0-9]{3}\-.+?T[^\.]+?(Z|[\+\-].+)"/>

With the ? after a + it searches for the smallest possible not the longest possible part of .

Futhermore I'mk not sure if that works, as you want it to:

[^\.]

Try without the ^