diff options
Diffstat (limited to 'framework/src/onos/core/store/persistence/src/main/java/org/onosproject/persistence/impl/PersistentSet.java')
| -rw-r--r-- | framework/src/onos/core/store/persistence/src/main/java/org/onosproject/persistence/impl/PersistentSet.java | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/framework/src/onos/core/store/persistence/src/main/java/org/onosproject/persistence/impl/PersistentSet.java b/framework/src/onos/core/store/persistence/src/main/java/org/onosproject/persistence/impl/PersistentSet.java deleted file mode 100644 index 26118cf6..00000000 --- a/framework/src/onos/core/store/persistence/src/main/java/org/onosproject/persistence/impl/PersistentSet.java +++ /dev/null @@ -1,194 +0,0 @@ -/* - * Copyright 2015 Open Networking Laboratory - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package org.onosproject.persistence.impl; - -import com.google.common.collect.Iterators; -import org.mapdb.DB; -import org.mapdb.Hasher; -import org.mapdb.Serializer; - -import java.util.Collection; -import java.util.Iterator; -import java.util.Set; - -import static com.google.common.base.Preconditions.checkNotNull; - -/** - * A set implementation that gets and receives all data from a serialized internal set. - */ -//TODO add locking for reads and writes -public class PersistentSet<E> implements Set<E> { - - private final org.onosproject.store.service.Serializer serializer; - - private final org.mapdb.DB database; - - private final Set<byte[]> items; - - private final String name; - - public PersistentSet(org.onosproject.store.service.Serializer serializer, DB database, String name) { - this.serializer = checkNotNull(serializer); - this.database = checkNotNull(database); - this.name = checkNotNull(name); - - items = database - .createHashSet(name) - .serializer(Serializer.BYTE_ARRAY) - .hasher(Hasher.BYTE_ARRAY) - .makeOrGet(); - } - - public void readInto(Set<E> items) { - this.items.forEach(item -> items.add(serializer.decode(item))); - } - - @Override - public int size() { - return items.size(); - } - - @Override - public boolean isEmpty() { - return items.isEmpty(); - } - - @Override - public boolean contains(Object o) { - checkNotNull(o, "The argument cannot be null"); - return items.contains(serializer.encode(o)); - } - - @Override - public Iterator<E> iterator() { - return Iterators.transform(items.iterator(), serializer::decode); - } - - @Override - public Object[] toArray() { - Object[] retArray = new Object[items.size()]; - int index = 0; - Iterator<byte[]> iterator = items.iterator(); - while (iterator.hasNext()) { - retArray[index] = serializer.decode(iterator.next()); - index++; - } - return retArray; - } - - @Override - public <T> T[] toArray(T[] a) { - checkNotNull(a, "The passed in array cannot be null."); - int index = 0; - Iterator<byte[]> iterator = items.iterator(); - T[] retArray; - if (a.length >= items.size()) { - retArray = a; - } else { - retArray = (T[]) new Object[items.size()]; - } - while (iterator.hasNext()) { - retArray[index++] = serializer.decode(iterator.next()); - } - if (retArray.length > items.size()) { - retArray[index] = null; - } - return retArray; - } - - @Override - public boolean add(E item) { - checkNotNull("Item to be added cannot be null."); - return items.add(serializer.encode(item)); - } - - @Override - public boolean remove(Object o) { - checkNotNull(o, "Item to be removed cannot be null."); - return items.remove(serializer.encode(o)); - } - - @Override - public boolean containsAll(Collection<?> c) { - checkNotNull(c, "Collection cannot be internal."); - for (Object item : c) { - if (!items.contains(serializer.encode(item))) { - return false; - } - } - return true; - } - - @Override - public boolean addAll(Collection<? extends E> c) { - checkNotNull(c, "The collection to be added cannot be null."); - boolean changed = false; - for (Object item : c) { - changed = items.add(serializer.encode(item)) || changed; - } - return changed; - } - - @Override - public boolean retainAll(Collection<?> c) { - boolean changed = false; - for (byte[] item : items) { - E deserialized = serializer.decode(item); - if (!c.contains(deserialized)) { - changed = items.remove(item) || changed; - } - } - return changed; - } - - @Override - public boolean removeAll(Collection<?> c) { - boolean changed = false; - for (Object item : c) { - changed = items.remove(serializer.encode(item)) || changed; - } - return changed; - } - - @Override - public void clear() { - items.clear(); - } - - @Override - public boolean equals(Object set) { - //This is not threadsafe and on larger sets incurs a significant processing cost - if (!(set instanceof Set)) { - return false; - } - Set asSet = (Set) set; - if (asSet.size() != this.size()) { - return false; - } - for (Object item : this) { - if (!asSet.contains(item)) { - return false; - } - } - return true; - } - - @Override - public int hashCode() { - return super.hashCode(); - } -}
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