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• MultivaluedMapImpl.java

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com.sun.jersey.core.util.MultivaluedMapImpl Maven / Gradle / Ivy

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.jersey.core.util;

import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import javax.ws.rs.core.MultivaluedMap;

/**
 * An implementation of {@link MultivaluedMap} where keys and values are
 * instances of String.
 *
 * @author [email protected]
 */
public class MultivaluedMapImpl
        extends HashMap>
        implements MultivaluedMap {

    static final long serialVersionUID = -6052320403766368902L;

    public MultivaluedMapImpl() { }

    public MultivaluedMapImpl(MultivaluedMap that) {
        for (Map.Entry> e : that.entrySet()) {
            this.put(e.getKey(), new ArrayList(e.getValue()));
        }
    }

    // MultivaluedMap

    @Override
    public final void putSingle(String key, String value) {
        List l = getList(key);

        l.clear();
        if (value != null)
            l.add(value);
        else
            l.add("");
    }

    @Override
    public final void add(String key, String value) {
        List l = getList(key);

        if (value != null)
            l.add(value);
        else
            l.add("");
    }

    @Override
    public final String getFirst(String key) {
        List values = get(key);
        if (values != null && values.size() > 0)
            return values.get(0);
        else
            return null;
    }

    //

    public final void addFirst(String key, String value) {
        List l = getList(key);

        if (value != null)
            l.add(0, value);
        else
            l.add(0, "");
    }

    public final  List get(String key, Class type) {
        Constructor c = null;
        try {
            c = type.getConstructor(String.class);
        } catch (Exception ex) {
            throw new IllegalArgumentException(type.getName()+" has no String constructor", ex);
        }

        ArrayList l = null;
        List values = get(key);
        if (values != null) {
            l = new ArrayList();
            for (String value: values) {
                try {
                    l.add(c.newInstance(value));
                } catch (Exception ex) {
                    l.add(null);
                }
            }
        }
        return l;
    }

    public final void putSingle(String key, Object value) {
        List l = getList(key);

        l.clear();
        if (value != null)
            l.add(value.toString());
        else
            l.add("");
    }

    public final void add(String key, Object value) {
        List l = getList(key);

        if (value != null)
            l.add(value.toString());
        else
            l.add("");
    }

    private List getList(String key) {
        List l = get(key);
        if (l == null) {
            l = new LinkedList();
            put(key, l);
        }
        return l;
    }

    public final  A getFirst(String key, Class type) {
        String value = getFirst(key);
        if (value == null)
            return null;
        Constructor c = null;
        try {
            c = type.getConstructor(String.class);
        } catch (Exception ex) {
            throw new IllegalArgumentException(type.getName()+" has no String constructor", ex);
        }
        A retVal = null;
        try {
            retVal = c.newInstance(value);
        } catch (Exception ex) {
        }
        return retVal;
    }

    @SuppressWarnings("unchecked")
    public final  A getFirst(String key, A defaultValue) {
        String value = getFirst(key);
        if (value == null)
            return defaultValue;

        Class type = (Class)defaultValue.getClass();

        Constructor c = null;
        try {
            c = type.getConstructor(String.class);
        } catch (Exception ex) {
            throw new IllegalArgumentException(type.getName()+" has no String constructor", ex);
        }
        A retVal = defaultValue;
        try {
            retVal = c.newInstance(value);
        } catch (Exception ex) {
        }
        return retVal;
    }
}