Pair.java

/*******************************************************************************
 * Copyright (c) 2012-2016 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.everrest.websockets.message;

import org.everrest.core.impl.MultivaluedMapImpl;
import org.everrest.core.impl.header.HeaderHelper;

import javax.ws.rs.core.MultivaluedMap;
import java.util.ArrayList;
import java.util.List;

/**
 * @author andrew00x
 */
public final class Pair {
    public static MultivaluedMap<String, String> toMap(Pair[] pairs) {
        final MultivaluedMap<String, String> result = new MultivaluedMapImpl();
        if (!(pairs == null || pairs.length == 0)) {
            for (Pair p : pairs) {
                result.add(p.getName(), p.getValue());
            }
        }
        return result;
    }

    public static Pair[] fromMap(MultivaluedMap<String, Object> source) {
        if (!(source == null || source.isEmpty())) {
            final List<Pair> list = new ArrayList<>();
            for (String key : source.keySet()) {
                List<Object> values = source.get(key);
                if (!(values == null || values.isEmpty())) {
                    for (Object v : values) {
                        list.add(Pair.of(key, HeaderHelper.getHeaderAsString(v)));
                    }
                } else {
                    list.add(Pair.of(key, null));
                }
            }
            return list.toArray(new Pair[list.size()]);
        }
        return new Pair[0];
    }

    public static Pair of(String name, String value) {
        return new Pair(name, value);
    }

    private String name;
    private String value;

    public Pair(String name, String value) {
        this.name = name;
        this.value = value;
    }

    public Pair() {
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }

    @Override
    public String toString() {
        return "Pair{" +
               "name='" + name + '\'' +
               ", value='" + value + '\'' +
               '}';
    }
}