/**
* Check if this Activity is updated more recently than an other Activity.
*
* @param other the other
* @return true, if is newer than
*/
public boolean isNewerThan(final Activity other) {
DateTime updatedThis = null;
if (getStatus() != null && getStatus().getUpdated() != null) {
updatedThis = new DateTime(getStatus().getUpdated());
}
DateTime updatedOther = null;
if (other.getStatus() != null && other.getStatus().getUpdated() != null) {
updatedOther = new DateTime(other.getStatus().getUpdated());
}
if (updatedOther == null) {
// take this as newest
return true;
} else if (updatedThis == null) {
// take other as newest
return false;
} else if (updatedThis.isAfter(updatedOther)) {
// take this as newest
return true;
} else {
// take other as newest
return false;
}
}
/**
* Synchronize two activities. The newest activity will be merged into a clone of the oldest
* activity.
*
* @param a the a
* @param b the b
* @return the activity
*/
public static Activity sync(final Activity a, final Activity b) {
Activity clone;
if (a.isNewerThan(b)) {
clone = b.clone();
clone.merge(a);
} else {
clone = a.clone();
clone.merge(b);
}
return clone;
}
/* (non-Javadoc)
* @see java.lang.Object#clone()
*/
@Override
public Activity clone() {
final Activity clone = new Activity();
clone.summary = summary;
clone.description = description;
clone.agent = agent;
if (constraints != null) {
clone.constraints = constraints.clone();
}
if (status != null) {
clone.status = status.clone();
}
return clone;
}
