/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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 org.netbeans.performance.benchmarks.bde;

import java.util.Map;
import java.util.HashMap;
import java.util.Map.Entry;
import java.util.List;
import java.util.Iterator;
import java.util.Collections;

/** Describes one series */
public final class ArgumentSeries {

    private Map argument2Values;

    /** Creates new Interval */
    public ArgumentSeries() {
        argument2Values = new HashMap(23);
    }

    /** Adds a value to a given argument */
    void add(String arg, List vals) {
        argument2Values.put(arg, vals);
    }

    /** @return keys */
    public String[] getKeys() {
        return (String[]) argument2Values.keySet().toArray(new String[argument2Values.size()]);
    }
    
    /** @return an iteration of values for a given key */
    public Iterator getValues(String key) {
        List list = (List) argument2Values.get(key);
        if (list == null) {
            return Collections.EMPTY_LIST.iterator();
        } else {
            return Collections.unmodifiableList(list).iterator();
        }
    }
}
