Validating array integers fails

• Key: VALIDATOR-189
• Type: Bug
• Status: Closed
• Resolution: Fixed
• Priority: Major
• Assignee: Niall Pemberton
• Reporter: tomster
• Fix Version/s: 1.3.1 Release

Description

I posted this issue on Struts and it got determined to be a validator bug (or appears to be).

There seems to be some issue with validating integer arrays:

html:

<html:select property="types" multiple="true" size="3" >
<html:option value="1">should work</html:option>
<html:option value="2">should work as well</html:option>
<html:option value="blah">this will fail validation</html:option>
</html:select>

actionform:

public class PropertyFilter implements Serializable
{
private String[] types;

public String[] getTypes() { return types; }
public void setTypes(String[] types) { this.types = types; }
}

validation.xml:

<formset>
<form name="PropertyFilterForm">

<field property="types" depends="integer">
<arg0 key="text.validation.type"/>
</field>

</form>
</formset>

Even if all values are integer, it will fail validation regardless. According to http://www.strutskickstart.com/IndexedPropertiesandValidation.ppt#18 I should
do something like:

<field property="types" indexedListProperty="types" depends="integer">
<arg0 key="text.validation.type"/>
</field>

This time, it does indeed check all the values are of type integer, however,
if you do not select anything (the field is not required) the result is:

java.lang.NullPointerException
org.apache.commons.validator.Field.getIndexedProperty(Field.java:796)
org.apache.commons.validator.Field.validate(Field.java:891)
..

Also having scoured all documentation in current and future builds and there is no example of validating an integer array.