/**
* Initialize this version holder from another version holder This is called during GII.
*
* <p>It's more likely that the other holder has seen most of the versions, and this version
* holder only has a few updates that happened since the GII started. So we apply our seen
* versions to the other version holder and then initialize this version holder from the other
* version holder.
*/
public synchronized void initializeFrom(RegionVersionHolder<T> source) {
// Make sure the bitsets are merged in both the source
// and this vector
mergeBitSet();
RegionVersionHolder<T> other = source.clone();
other.mergeBitSet();
// Get a copy of the local version and exceptions
long myVersion = this.version;
// initialize our version and exceptions to match the others
this.exceptions = other.exceptions;
this.version = other.version;
// Initialize the bit set to be empty. Merge bit set should
// have already done this, but just to be sure.
if (this.bitSet != null) {
this.bitSetVersion = this.version;
// Make sure the bit set is empty except for the first, bit, indicating
// that the version has been received.
this.bitSet.set(0);
}
// Now if this.version/exceptions overlap with myVersion/myExceptions, use this'
// The only case needs special handling is: if myVersion is newer than this.version,
// should create an exception (this.version+1, myversion) and set this.version=myversion
if (myVersion > this.version) {
RVVException e = RVVException.createException(this.version, myVersion + 1);
// add special exception
if (this.exceptions == null) {
this.exceptions = new LinkedList<RVVException>();
}
int i = 0;
for (RVVException exception : this.exceptions) {
if (e.compareTo(exception) >= 0) {
break;
}
i++;
}
this.exceptions.add(i, e);
this.version = myVersion;
}
}
