/**
* Returns the value of the property named in the transformer's constructor for the object
* provided. If any object in the property path leading up to the target property is <code>null
* </code> then the outcome will be based on the value of the <code>ignoreNull</code> attribute.
* By default, <code>ignoreNull</code> is <code>false</code> and would result in an <code>
* IllegalArgumentException</code> if an object in the property path leading up to the target
* property is <code>null</code>.
*
* @param object The object to be transformed.
* @return The value of the property named in the transformer's constructor for the object
* provided.
* @throws IllegalArgumentException If an IllegalAccessException, InvocationTargetException, or
* NoSuchMethodException is thrown when trying to access the property specified on the object
* provided. Or if an object in the property path provided is <code>null</code> and <code>
* ignoreNull</code> is set to <code>false</code>.
*/
public Object transform(Object object) {
Object propertyValue = null;
try {
propertyValue = PropertyUtils.getProperty(object, propertyName);
} catch (IllegalArgumentException e) {
final String errorMsg =
"Problem during transformation. Null value encountered in property path...";
if (ignoreNull) {
log.warn("WARNING: " + errorMsg + e);
} else {
IllegalArgumentException iae = new IllegalArgumentException(errorMsg);
if (!BeanUtils.initCause(iae, e)) {
log.error(errorMsg, e);
}
throw iae;
}
} catch (IllegalAccessException e) {
final String errorMsg = "Unable to access the property provided.";
IllegalArgumentException iae = new IllegalArgumentException(errorMsg);
if (!BeanUtils.initCause(iae, e)) {
log.error(errorMsg, e);
}
throw iae;
} catch (InvocationTargetException e) {
final String errorMsg = "Exception occurred in property's getter";
IllegalArgumentException iae = new IllegalArgumentException(errorMsg);
if (!BeanUtils.initCause(iae, e)) {
log.error(errorMsg, e);
}
throw iae;
} catch (NoSuchMethodException e) {
final String errorMsg = "No property found for name [" + propertyName + "]";
IllegalArgumentException iae = new IllegalArgumentException(errorMsg);
if (!BeanUtils.initCause(iae, e)) {
log.error(errorMsg, e);
}
throw iae;
}
return propertyValue;
}
