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/*
 * Copyright (c) 2008-2016, Hazelcast, Inc. All Rights Reserved.
 *
 * 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 com.hazelcast.core;

import com.hazelcast.transaction.TransactionalObject;

/**
 * Transactional implementation of {@link ISet}.
 */
public interface TransactionalSet extends TransactionalObject {

    /**
     * Add new item to transactional set.
     * @param e item added to transactional set
     * @return true if item is added successfully
     */
    boolean add(E e);

    /**
     * Remove item from transactional set.
     * @param e item removed from transactional set
     * @return true if item is remove successfully
     */
    boolean remove(E e);

    /**
     * Returns the size of the set.
     * @return the size of the set
     */
    int size();
}