/**
* Batch executes all mutations scheduled to this Mutator instance by addInsertion, addDeletion
* etc. May throw a HectorException which is a RuntimeException.
*
* @return A MutationResult holds the status.
*/
@Override
public MutationResult execute() {
if (pendingMutations == null || pendingMutations.isEmpty()) {
return new MutationResultImpl(true, 0, null);
}
final BatchMutation<K> mutations = pendingMutations.makeCopy();
pendingMutations = null;
return new MutationResultImpl(
keyspace.doExecute(
new KeyspaceOperationCallback<Void>() {
@Override
public Void doInKeyspace(KeyspaceService ks) throws HectorException {
ks.batchMutate(mutations);
return null;
}
}));
}
/**
* Deletes a subcolumn of a supercolumn
*
* @param <SN> super column type
* @param <N> subcolumn type
*/
@Override
public <SN, N> MutationResult subDelete(
final K key,
final String cf,
final SN supercolumnName,
final N columnName,
final Serializer<SN> sNameSerializer,
final Serializer<N> nameSerializer) {
return new MutationResultImpl(
keyspace.doExecute(
new KeyspaceOperationCallback<Void>() {
@Override
public Void doInKeyspace(KeyspaceService ks) throws HectorException {
ks.remove(
keySerializer.toByteBuffer(key),
ThriftFactory.createSuperColumnPath(
cf, supercolumnName, columnName, sNameSerializer, nameSerializer));
return null;
}
}));
}
@Override
public String toString() {
return "Mutator(" + keyspace.toString() + ")";
}
/** {@inheritDoc} */
@Override
public <N> Mutator<K> addDeletion(K key, String cf, N columnName, Serializer<N> nameSerializer) {
addDeletion(key, cf, columnName, nameSerializer, keyspace.createClock());
return this;
}
/**
* Deletes the columns defined in the HSuperColumn. If there are no HColumns attached, we delete
* the whole thing.
*/
public <SN, N, V> Mutator<K> addSubDelete(K key, String cf, HSuperColumn<SN, N, V> sc) {
return addSubDelete(key, cf, sc, keyspace.createClock());
}
