How can I bean-validate on a char?
I just found that @Pattern might work (only) with CharSequences.
How can I validate a single char?
//@Pattern(regex = "[YN]") // @@?
private char someYn; // 'Y' or 'N'
Will it blend?
Using an AttributeConverter is not an option.
Oh, is a single char also a CharSequence?
java bean-validation
asked Nov 14 '18 at 1:26
Jin KwonJin Kwon
10k666106
add a comment |
I just found that @Pattern might work (only) with CharSequences.
How can I validate a single char?
//@Pattern(regex = "[YN]") // @@?
private char someYn; // 'Y' or 'N'
Will it blend?
Using an AttributeConverter is not an option.
Oh, is a single char also a CharSequence?
java bean-validation
asked Nov 14 '18 at 1:26
Jin KwonJin Kwon
10k666106
1
@Pattern(regexp = "^[Y|N]1$", message ="Must be Y or N") try this.You cannot use @Pattern for Character variable, You will get exception
– GauravRai1512
Nov 14 '18 at 1:31
@GauravRai1512 Is1part necessary? I'm not asking about theregex, anyway, thanks.
– Jin Kwon
Nov 14 '18 at 1:36
Yes, 1 is necessary to match any character.
– GauravRai1512
Nov 14 '18 at 1:39
1
@GauravRai1512 That is not true.1is completely redundant.
– VGR
Nov 14 '18 at 1:43
add a comment |
I just found that @Pattern might work (only) with CharSequences.
How can I validate a single char?
//@Pattern(regex = "[YN]") // @@?
private char someYn; // 'Y' or 'N'
Will it blend?
Using an AttributeConverter is not an option.
Oh, is a single char also a CharSequence?
java bean-validation
asked Nov 14 '18 at 1:26
Jin KwonJin Kwon
10k666106
I just found that @Pattern might work (only) with CharSequences.
How can I validate a single char?
//@Pattern(regex = "[YN]") // @@?
private char someYn; // 'Y' or 'N'
Will it blend?
Using an AttributeConverter is not an option.
Oh, is a single char also a CharSequence?
java bean-validation
java bean-validation
asked Nov 14 '18 at 1:26
Jin KwonJin Kwon
10k666106
asked Nov 14 '18 at 1:26
Jin KwonJin Kwon
10k666106
asked Nov 14 '18 at 1:26
Jin KwonJin Kwon
10k666106
asked Nov 14 '18 at 1:26
Jin KwonJin Kwon
10k666106
asked Nov 14 '18 at 1:26
Jin KwonJin Kwon
10k666106
10k666106
1
@Pattern(regexp = "^[Y|N]1$", message ="Must be Y or N") try this.You cannot use @Pattern for Character variable, You will get exception
– GauravRai1512
Nov 14 '18 at 1:31
@GauravRai1512 Is1part necessary? I'm not asking about theregex, anyway, thanks.
– Jin Kwon
Nov 14 '18 at 1:36
Yes, 1 is necessary to match any character.
– GauravRai1512
Nov 14 '18 at 1:39
1
@GauravRai1512 That is not true.1is completely redundant.
– VGR
Nov 14 '18 at 1:43
add a comment |
1
@Pattern(regexp = "^[Y|N]1$", message ="Must be Y or N") try this.You cannot use @Pattern for Character variable, You will get exception
– GauravRai1512
Nov 14 '18 at 1:31
@GauravRai1512 Is1part necessary? I'm not asking about theregex, anyway, thanks.
– Jin Kwon
Nov 14 '18 at 1:36
Yes, 1 is necessary to match any character.
– GauravRai1512
Nov 14 '18 at 1:39
1
@GauravRai1512 That is not true.1is completely redundant.
– VGR
Nov 14 '18 at 1:43
1
1
@Pattern(regexp = "^[Y|N]1$", message ="Must be Y or N") try this.You cannot use @Pattern for Character variable, You will get exception
– GauravRai1512
Nov 14 '18 at 1:31
@Pattern(regexp = "^[Y|N]1$", message ="Must be Y or N") try this.You cannot use @Pattern for Character variable, You will get exception
– GauravRai1512
Nov 14 '18 at 1:31
@GauravRai1512 Is
1 part necessary? I'm not asking about the regex, anyway, thanks.– Jin Kwon
Nov 14 '18 at 1:36
@GauravRai1512 Is
1 part necessary? I'm not asking about the regex, anyway, thanks.– Jin Kwon
Nov 14 '18 at 1:36
Yes, 1 is necessary to match any character.
– GauravRai1512
Nov 14 '18 at 1:39
Yes, 1 is necessary to match any character.
– GauravRai1512
Nov 14 '18 at 1:39
1
1
@GauravRai1512 That is not true.
1 is completely redundant.– VGR
Nov 14 '18 at 1:43
@GauravRai1512 That is not true.
1 is completely redundant.– VGR
Nov 14 '18 at 1:43
add a comment |
1 Answer
1
active
oldest
votes
You can write your own ConstraintValidator:
https://docs.oracle.com/javaee/7/api/javax/validation/ConstraintValidator.html
Where you can provide annotation and validation type
for which you can define your logic
And then you can annotate your field with your custom annotation
Here is link with steps how to make it :
https://dzone.com/articles/create-your-own-constraint-with-bean-validation-20
As per javax validation documentation :
@Pattern(regex=, flag=) String.
Additionally supported by HV: any sub-type of CharSequence.
Checks if the annotated string matches the regular expression regex considering the given flag
So actually with Character using @Pattern you will get the error
Thanks
answered Nov 14 '18 at 1:42
Mykhailo MoskuraMykhailo Moskura
838113
Sir, request to confirm,@Patterndoesn't work forchar? Thanks.
– Jin Kwon
Nov 14 '18 at 1:46
You can refer to post stackoverflow.com/questions/12599069/…
– Mykhailo Moskura
Nov 14 '18 at 1:53
Updated answer thanks
– Mykhailo Moskura
Nov 14 '18 at 1:59
1
Yes as per javax.validation says we cannot use Character
– Mykhailo Moskura
Nov 14 '18 at 2:04
add a comment |
Your Answer
StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53291869%2fhow-can-i-bean-validate-on-a-char%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can write your own ConstraintValidator:
https://docs.oracle.com/javaee/7/api/javax/validation/ConstraintValidator.html
Where you can provide annotation and validation type
for which you can define your logic
And then you can annotate your field with your custom annotation
Here is link with steps how to make it :
https://dzone.com/articles/create-your-own-constraint-with-bean-validation-20
As per javax validation documentation :
@Pattern(regex=, flag=) String.
Additionally supported by HV: any sub-type of CharSequence.
Checks if the annotated string matches the regular expression regex considering the given flag
So actually with Character using @Pattern you will get the error
Thanks
answered Nov 14 '18 at 1:42
Mykhailo MoskuraMykhailo Moskura
838113
Sir, request to confirm,@Patterndoesn't work forchar? Thanks.
– Jin Kwon
Nov 14 '18 at 1:46
You can refer to post stackoverflow.com/questions/12599069/…
– Mykhailo Moskura
Nov 14 '18 at 1:53
Updated answer thanks
– Mykhailo Moskura
Nov 14 '18 at 1:59
1
Yes as per javax.validation says we cannot use Character
– Mykhailo Moskura
Nov 14 '18 at 2:04
add a comment |
You can write your own ConstraintValidator:
https://docs.oracle.com/javaee/7/api/javax/validation/ConstraintValidator.html
Where you can provide annotation and validation type
for which you can define your logic
And then you can annotate your field with your custom annotation
Here is link with steps how to make it :
https://dzone.com/articles/create-your-own-constraint-with-bean-validation-20
As per javax validation documentation :
@Pattern(regex=, flag=) String.
Additionally supported by HV: any sub-type of CharSequence.
Checks if the annotated string matches the regular expression regex considering the given flag
So actually with Character using @Pattern you will get the error
Thanks
answered Nov 14 '18 at 1:42
Mykhailo MoskuraMykhailo Moskura
838113
Sir, request to confirm,@Patterndoesn't work forchar? Thanks.
– Jin Kwon
Nov 14 '18 at 1:46
You can refer to post stackoverflow.com/questions/12599069/…
– Mykhailo Moskura
Nov 14 '18 at 1:53
Updated answer thanks
– Mykhailo Moskura
Nov 14 '18 at 1:59
1
Yes as per javax.validation says we cannot use Character
– Mykhailo Moskura
Nov 14 '18 at 2:04
add a comment |
You can write your own ConstraintValidator:
https://docs.oracle.com/javaee/7/api/javax/validation/ConstraintValidator.html
Where you can provide annotation and validation type
for which you can define your logic
And then you can annotate your field with your custom annotation
Here is link with steps how to make it :
https://dzone.com/articles/create-your-own-constraint-with-bean-validation-20
As per javax validation documentation :
@Pattern(regex=, flag=) String.
Additionally supported by HV: any sub-type of CharSequence.
Checks if the annotated string matches the regular expression regex considering the given flag
So actually with Character using @Pattern you will get the error
Thanks
answered Nov 14 '18 at 1:42
Mykhailo MoskuraMykhailo Moskura
838113
You can write your own ConstraintValidator:
https://docs.oracle.com/javaee/7/api/javax/validation/ConstraintValidator.html
Where you can provide annotation and validation type
for which you can define your logic
And then you can annotate your field with your custom annotation
Here is link with steps how to make it :
https://dzone.com/articles/create-your-own-constraint-with-bean-validation-20
As per javax validation documentation :
@Pattern(regex=, flag=) String.
Additionally supported by HV: any sub-type of CharSequence.
Checks if the annotated string matches the regular expression regex considering the given flag
So actually with Character using @Pattern you will get the error
Thanks
answered Nov 14 '18 at 1:42
Mykhailo MoskuraMykhailo Moskura
838113
edited Nov 14 '18 at 2:05
answered Nov 14 '18 at 1:42
Mykhailo MoskuraMykhailo Moskura
838113
answered Nov 14 '18 at 1:42
Mykhailo MoskuraMykhailo Moskura
838113
answered Nov 14 '18 at 1:42
Mykhailo MoskuraMykhailo Moskura
838113
838113
Sir, request to confirm,@Patterndoesn't work forchar? Thanks.
– Jin Kwon
Nov 14 '18 at 1:46
You can refer to post stackoverflow.com/questions/12599069/…
– Mykhailo Moskura
Nov 14 '18 at 1:53
Updated answer thanks
– Mykhailo Moskura
Nov 14 '18 at 1:59
1
Yes as per javax.validation says we cannot use Character
– Mykhailo Moskura
Nov 14 '18 at 2:04
add a comment |
Sir, request to confirm,@Patterndoesn't work forchar? Thanks.
– Jin Kwon
Nov 14 '18 at 1:46
You can refer to post stackoverflow.com/questions/12599069/…
– Mykhailo Moskura
Nov 14 '18 at 1:53
Updated answer thanks
– Mykhailo Moskura
Nov 14 '18 at 1:59
1
Yes as per javax.validation says we cannot use Character
– Mykhailo Moskura
Nov 14 '18 at 2:04
Sir, request to confirm,
@Pattern doesn't work for char? Thanks.– Jin Kwon
Nov 14 '18 at 1:46
Sir, request to confirm,
@Pattern doesn't work for char? Thanks.– Jin Kwon
Nov 14 '18 at 1:46
You can refer to post stackoverflow.com/questions/12599069/…
– Mykhailo Moskura
Nov 14 '18 at 1:53
You can refer to post stackoverflow.com/questions/12599069/…
– Mykhailo Moskura
Nov 14 '18 at 1:53
Updated answer thanks
– Mykhailo Moskura
Nov 14 '18 at 1:59
Updated answer thanks
– Mykhailo Moskura
Nov 14 '18 at 1:59
1
1
Yes as per javax.validation says we cannot use Character
– Mykhailo Moskura
Nov 14 '18 at 2:04
Yes as per javax.validation says we cannot use Character
– Mykhailo Moskura
Nov 14 '18 at 2:04
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53291869%2fhow-can-i-bean-validate-on-a-char%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
1
@Pattern(regexp = "^[Y|N]1$", message ="Must be Y or N") try this.You cannot use @Pattern for Character variable, You will get exception
– GauravRai1512
Nov 14 '18 at 1:31
@GauravRai1512 Is
1part necessary? I'm not asking about theregex, anyway, thanks.– Jin Kwon
Nov 14 '18 at 1:36
Yes, 1 is necessary to match any character.
– GauravRai1512
Nov 14 '18 at 1:39
1
@GauravRai1512 That is not true.
1is completely redundant.– VGR
Nov 14 '18 at 1:43