specify one of two attributes as required in custom JSP tag

Question

Attributes in Custom JSP tag can be set as required by using the following snippet:

<attribute>
    <name>imageId</name>
    <required>true</required>
    <rtexprvalue>true</rtexprvalue>
</attribute>

Is there any way to specify one of two attributes as required?

one required and the other not?, one with required true, the other with required false. — Eduardo Yáñez Parareda, Oct 08 '15 at 06:56
one of the two is required. Example: I have 2 attributes - Id, Name. My requirement is that either Id or Name to be provided for sure. — swathi yakkali, Oct 08 '15 at 08:15

score 0 · Answer 1 · edited May 23 '17 at 12:22

Either you can make an attribute optional or mandatory.There is not a way to put a condition which can check if one of them is there.

From Documentation

<required>true | false</required>

  (Optional) Defines whether this attribute has optional use in the JSP page.

  If not defined here, the default is false — that is, the attribute is optional by
  default.

  If true is specified, and the attribute is not used in a JSP page, a
  translation-time error occurs.

specify one of two attributes as required in custom JSP tag

1 Answers1

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