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/*
 * Licensed to STRATIO (C) under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership.  The STRATIO (C) licenses this file
 * to you 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.stratio.cassandra.lucene.service;

import com.google.common.base.Objects;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * A sorted list of {@link RowKey}s.
 *
 * @author Andres de la Pena {@literal }
 */
public class RowKeys implements Iterable {

    /** The {@link RowKey}s. */
    private final List rowKeys;

    /**
     * Default empty constructor.
     */
    public RowKeys() {
        this(new ArrayList());
    }

    /**
     * Constructor taking a initial list of {@link RowKey}s.
     *
     * @param rowKeys A list of {@link RowKey}s.
     */
    public RowKeys(List rowKeys) {
        this.rowKeys = rowKeys;
    }

    /** {@inheritDoc} */
    public Iterator iterator() {
        return rowKeys.iterator();
    }

    /**
     * Returns the number of {@link RowKey}s in this list.
     *
     * @return the number of {@link RowKey}s in this list
     */
    public int size() {
        return rowKeys.size();
    }

    /**
     * Adds a new {@link RowKey} to this list.
     *
     * @param rowKey A {@link RowKey} to be added.
     */
    public void add(RowKey rowKey) {
        rowKeys.add(rowKey);
    }

    /** {@inheritDoc} */
    @Override
    public String toString() {
        return Objects.toStringHelper(this).add("rowKeys", rowKeys).toString();
    }
}




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