/* (non-Javadoc)
* @see Job#setProperty(QualifiedName,Object)
*/
protected void setProperty(QualifiedName key, Object value) {
// thread safety: (Concurrency001 - copy on write)
if (value == null) {
if (properties == null) return;
ObjectMap temp = (ObjectMap) properties.clone();
temp.remove(key);
if (temp.isEmpty()) properties = null;
else properties = temp;
} else {
ObjectMap temp = properties;
if (temp == null) temp = new ObjectMap(5);
else temp = (ObjectMap) properties.clone();
temp.put(key, value);
properties = temp;
}
}
