/**
* Assigns sequential identifiers to the provided <code>clusters</code> (and their sub-clusters).
* If a cluster already has an identifier, the identifier will not be changed.
*
* @param clusters Clusters to assign identifiers to.
* @throws IllegalArgumentException if the provided clusters contain non-unique identifiers
*/
public static void assignClusterIds(Collection<Cluster> clusters) {
final ArrayList<Cluster> flattened = Lists.newArrayListWithExpectedSize(clusters.size());
flatten(flattened, clusters);
synchronized (clusters) {
final HashSet<Integer> ids = Sets.newHashSet();
// First, find the start value for the id and check uniqueness of the ids
// already provided.
int maxId = Integer.MIN_VALUE;
for (final Cluster cluster : flattened) {
if (cluster.id != null) {
if (!ids.add(cluster.id)) {
throw new IllegalArgumentException("Non-unique cluster id found: " + cluster.id);
}
maxId = Math.max(maxId, cluster.id);
}
}
// We'd rather start with 0
maxId = Math.max(maxId, -1);
// Assign missing ids
for (final Cluster c : flattened) {
if (c.id == null) {
c.id = ++maxId;
}
}
}
}
public static TileEntity getTileEntity(IBlockAccess blockaccess, int x, int y, int z) {
HashSet<ChunkCoordinates> visited = Sets.newHashSet();
Block block = blockaccess.getBlock(x, y, z);
while (block != NailedBlocks.portalController) {
if (isValidLinkPortalBlock(block) == 0) {
return null;
}
ChunkCoordinates pos = new ChunkCoordinates(x, y, z);
if (!visited.add(pos)) {
return null;
}
int meta = blockaccess.getBlockMetadata(x, y, z);
if (meta == 0) {
return null;
}
if (meta == 1) {
y--;
} else if (meta == 2) {
y++;
} else if (meta == 3) {
z--;
} else if (meta == 4) {
z++;
} else if (meta == 5) {
x--;
} else if (meta == 6) {
x++;
} else {
return null;
}
block = blockaccess.getBlock(x, y, z);
}
return blockaccess.getTileEntity(x, y, z);
}
Set<Object> getPartitions(List<Document> documents) {
final HashSet<Object> partitions = Sets.newHashSet();
for (Document document : documents) {
final Collection<Object> documentPartitions =
document.<Collection<Object>>getField(partitionIdFieldName);
if (documentPartitions != null) {
partitions.addAll(documentPartitions);
}
}
return partitions;
}