Hi Glenn, I downloaded the 1.8 snapshot version of commons-beanutils from the svn (which should have the fix for the JIRA issue you mention below), but my problem remains.
Sean -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 28, 2007 10:14 AM To: Jakarta Commons Users List Subject: Re: [beanutils] Order of populate method Perhaps this may help: http://issues.apache.org/jira/browse/BEANUTILS-97 - Glenn "O'Shea, Sean" <Sean.O'[EMAIL PROTECTED]> 28/03/2007 10:05 AM Please respond to "Jakarta Commons Users List" <commons-user@jakarta.apache.org> To <commons-user@jakarta.apache.org> cc Subject [beanutils] Order of populate method Classification Hi all, I'm using commons-beanutils 1.7.0 running with JDK 1.4 and I have a requirement where I need to combine the request parameters from a HttpServletRequest with the contents of a struts form into one big dyna bean. Currently, my pseudocode looks like this: 1. Load variables from request into name value pairs in a Map 2. Check to see whether there is a struts ActionForm in the request 3. Use PropertyUtilsBean.describe to get the name value pairs from the struts ActionForm and put these name value pairs into a Map 4. Combine the Map from the request with the Map from the struts ActionForm 5. Call BeanUtils.populate(bean, map) on the map to get back a DynaBean This works fine for 99% of cases. But, when the ActionForm has a nested Object property, I get the following exception: 2007-03-13 15:37:59,316 [http-8080-Processor23] ERROR - Servlet.service() for servlet StrutsServlet threw exception java.lang.IllegalArgumentException: No bean specified at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptor(Pro pertyUtilsBean.java:751) at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.jav a:937) at org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:8 11) at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:298) By nested Object property, I mean something like this: public class CustomFormBean extends ActionForm { private String ssn; private NestedFormProperty family; public CustomFormBean(String ssn, NestedFormProperty family) { this.ssn = ssn; this.family = family; } } public class NestedFormProperty { private boolean hasSpouse; private List children; public NestedFormProperty(boolean hasSpouse, List children) { this.hasSpouse = hasSpouse; this.children = children; } } The IllegalArgumentException is getting thrown from the following piece of code: // Loop through the property name/value pairs to be set Iterator names = properties.keySet().iterator(); while (names.hasNext()) { // Identify the property name and value(s) to be assigned String name = (String) names.next(); if (name == null) { continue; } Object value = properties.get(name); // Perform the assignment for this property setProperty(bean, name, value); } The reason I'm getting the exception is because the bean property is null. I think the bean is null because the iterator is returning a property from the NestedFormBean before actually processing the NestedFormBean itself. For example: If the name variable from the iterator comes back as family.hasSpouse before the entire NestedFormProperty bean is processed, then the bean is null. What I need is some way to manipulate the way the iterator traverses the Map of properties to ensure that nested bean properties are processed before normal String properties. Is there any simple way to do this? Any help would be greatly appreciated Cheers Sean --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
