[BEANUTILS-493] Exception when setting indexed properties: "Default conversion to ArrayList failed"

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.9.2, 1.9.3
• Fix Version/s: 1.9.3
• Component/s: Bean / Property Utils, DynaBean
• Labels: regression

Environment

commons-beanutils-1.9.3-20160606.150953-11
jdk1.8.0_92

• Assignee: Unassigned
• Reporter: Bernhard Seebass
• Created: 09/Jun/16 10:15
• Updated: 25/Sep/16 22:12
• Resolved: 14/Sep/16 11:58

Description

An exception is thrown when adding indexed properties to a DynaBean. This worked perfectly with Version 1.8.3

org.apache.commons.beanutils.ConversionException: Default conversion to ArrayList failed.
at org.apache.commons.beanutils.converters.AbstractConverter.handleMissing(AbstractConverter.java:314)
at org.apache.commons.beanutils.converters.AbstractConverter.handleError(AbstractConverter.java:269)
at org.apache.commons.beanutils.converters.AbstractConverter.convert(AbstractConverter.java:177)
at org.apache.commons.beanutils.converters.ConverterFacade.convert(ConverterFacade.java:61)
at org.apache.commons.beanutils.ConvertUtilsBean.convert(ConvertUtilsBean.java:491)
at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:1004)
at BeanUtilsBeanTestApp.main(BeanUtilsBeanTestApp.java:11)
Caused by: org.apache.commons.beanutils.ConversionException: Can't convert value '' to type class java.util.ArrayList
at org.apache.commons.beanutils.converters.AbstractConverter.conversionException(AbstractConverter.java:474)
at org.apache.commons.beanutils.converters.StringConverter.convertToType(StringConverter.java:96)
at org.apache.commons.beanutils.converters.AbstractConverter.handleMissing(AbstractConverter.java:312)
... 6 more

Test Class:
import org.apache.commons.beanutils.BeanUtilsBean;
import org.apache.commons.beanutils.LazyDynaBean;

public class BeanUtilsBeanTestApp {

public static void main(String[] args) {
try

{ LazyDynaBean lazyDynaBean = new LazyDynaBean(); BeanUtilsBean beanUtilsBean = BeanUtilsBean.getInstance(); beanUtilsBean.setProperty(lazyDynaBean, "x[0]", "x1"); beanUtilsBean.setProperty(lazyDynaBean, "x[1]", "x2"); System.out.println(lazyDynaBean.get("x")); // output using commons-beanutils 1.8.3: [x1, x2] }

catch (Exception e)

{ e.printStackTrace(); }

}
}