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The Async Http Client (AHC) classes.
There is a newer version: 3.0.0
/*
 * Copyright (c) 2014 AsyncHttpClient Project. All rights reserved.
 *
 * This program is licensed to you under the Apache License Version 2.0,
 * and you may not use this file except in compliance with the Apache License Version 2.0.
 * You may obtain a copy of the Apache License Version 2.0 at http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the Apache License Version 2.0 is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under.
 */
package org.asynchttpclient;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * A pair of (name, value) String
 * @author slandelle
 */
public class Param {
    
    public static List map2ParamList(Map> map) {
        if (map == null)
            return null;

        List params = new ArrayList<>(map.size());
        for (Map.Entry> entries : map.entrySet()) {
            String name = entries.getKey();
            for (String value : entries.getValue())
                params.add(new Param(name, value));
        }
        return params;
    }

    private final String name;
    private final String value;
    public Param(String name, String value) {
        this.name = name;
        this.value = value;
    }
    public String getName() {
        return name;
    }
    public String getValue() {
        return value;
    }

    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((name == null) ? 0 : name.hashCode());
        result = prime * result + ((value == null) ? 0 : value.hashCode());
        return result;
    }

    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (!(obj instanceof Param))
            return false;
        Param other = (Param) obj;
        if (name == null) {
            if (other.name != null)
                return false;
        } else if (!name.equals(other.name))
            return false;
        if (value == null) {
            if (other.value != null)
                return false;
        } else if (!value.equals(other.value))
            return false;
        return true;
    }
}