/**
* Gets the value specified by the BeanProperty
*
* @param instance Object to get the value from
* @param bp the property to get
* @return the value of the property if it exists
*/
protected final Object getBeanValue(Object instance, BeanProperty bp) {
String propertyName = bp.getName();
if (bp.isRead()) {
try {
Object value = bp.get(instance);
if (value != null && descriptor != null) {
SerializationDescriptor subDescriptor =
(SerializationDescriptor) descriptor.get(propertyName);
if (subDescriptor != null) {
PropertyProxy subProxy = PropertyProxyRegistry.getProxyAndRegister(value);
subProxy = (PropertyProxy) subProxy.clone();
subProxy.setDescriptor(subDescriptor);
subProxy.setDefaultInstance(value);
value = subProxy;
}
}
return value;
} catch (Exception e) {
SerializationContext context = getSerializationContext();
// Log failed property set errors
if (Log.isWarn() && logPropertyErrors(context)) {
Logger log = Log.getLogger(LOG_CATEGORY);
log.warn(
"Failed to get property {0} on type {1}.",
new Object[] {propertyName, getAlias(instance)}, e);
}
if (!ignorePropertyErrors(context)) {
// Failed to get property '{propertyName}' on type '{className}'.
MessageException ex = new MessageException();
ex.setMessage(
FAILED_PROPERTY_READ_ERROR, new Object[] {propertyName, getAlias(instance)});
ex.setRootCause(e);
throw ex;
}
}
} else {
SerializationContext context = getSerializationContext();
if (!ignorePropertyErrors(context)) {
// Property '{propertyName}' not readable from class '{alias}'.
MessageException ex = new MessageException();
ex.setMessage(NON_READABLE_PROPERTY_ERROR, new Object[] {propertyName, getAlias(instance)});
throw ex;
}
}
return null;
}
/**
* Return true if this property is write only, which means we cannot get a value for it.
*
* @param instance the instance
* @param propertyName the property name
* @return true if there is a way to write but not read the property
*/
public boolean isWriteOnly(Object instance, String propertyName) {
if (instance == null || propertyName == null) return false;
BeanProperty bp = getBeanProperty(instance, propertyName);
return bp != null && bp.isWrite() && !bp.isRead();
}
