Re: Validate length of array

[Niall Pemberton]

On 12/5/06, O'Shea, Sean <Sean.O'[EMAIL PROTECTED]> wrote:

Hi all,

I'm using struts 1.2.7 with commons-validator 1.1.4

I've this DynaValidatorActionForm which has the following properties:

<form-bean name="TOAForm" dynamic="true"
        type="org.apache.struts.validator.DynaValidatorActionForm">
        <form-property name="fundsTransfer" type="com.myform.Transfer[]"
size="3" />
        <form-property name="id" type="java.lang.String" />
</form-bean>

I have the corresponding rules defined:

<form name="/brokeragePartialTransfer">
        <field property="fundName"  indexedListProperty ="fundsTransfer"
depends="required,minlength,maxlength">
        <arg key="TOAForm.fundName" position="0"/>
        <arg1 name="minlength" key="${var:minlength}" resource="false"
position="1"/>
        <arg2 name="maxlength" key="${var:maxlength}" resource="false"
position="1"/>
                <var>
                        <var-name>minlength</var-name>
                        <var-value>3</var-value>
                </var>
                <var>
                           <var-name>maxlength</var-name>
                           <var-value>20</var-value>
                </var>
        </field>
        <field property="noOfShares" indexedListProperty
="fundsTransfer" depends="required,minlength,maxlength">

        <arg key="TOAForm.noOfShares" />
        <arg name="minlength" key="${var:minlength}" resource="false"
position="1"/>
        <arg name="maxlength" key="${var:maxlength}" resource="false"
position="1"/>
                <var>
                           <var-name>minlength</var-name>
                           <var-value>3</var-value>
                </var>
                <var>
                           <var-name>maxlength</var-name>
                           <var-value>20</var-value>
                </var>
        </field>
        ....
</form>

From my understanding, these validations will validate the noOfShares
and fundName properties which are part of the com.myform.Transfer POJO.
In addition to these individual validations I also need to ensure that
the user has entered at least one com.myform.Transfer bean. ie. I need
to make sure that the fundsTransfer array has a size of greater than 1.
Is there a way to include this type of validation in XML format?

What you have looks OK - best way is to try it and see. There isn't a
"minimum indexed/array size validator shipped with any version of
Struts at the moment. You could write a custom one and "configure" it
through the validator's XML. If you do then the best way is to look at
the struts FieldChecks class to see how validators have been
implemented there.

Niall

Hope someone has come across this problem before and can offer some help

Thanks

Sean O Shea

---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]