/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2010 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
* https://glassfish.dev.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.server.impl.model.parameter.multivalued;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;
import javax.ws.rs.core.MultivaluedMap;
/**
*
* @author Paul.Sandoz@Sun.Com
*/
abstract class CollectionStringExtractor<V extends Collection<String>>
implements MultivaluedParameterExtractor {
final String parameter;
final String defaultValue;
protected CollectionStringExtractor(String parameter, String defaultValue) {
this.parameter = parameter;
this.defaultValue = defaultValue;
}
public String getName() {
return parameter;
}
public String getDefaultStringValue() {
return defaultValue;
}
public Object extract(MultivaluedMap<String, String> parameters) {
List<String> stringList = parameters.get(parameter);
if (stringList != null) {
V copy = getInstance();
copy.addAll(stringList);
return copy;
} else if (defaultValue != null) {
V l = getInstance();
l.add(defaultValue);
return l;
}
return getInstance();
}
protected abstract V getInstance();
private static final class ListString extends CollectionStringExtractor<List<String>> {
public ListString(String parameter, String defaultValue) {
super(parameter, defaultValue);
}
@Override
protected List<String> getInstance() {
return new ArrayList<String>();
}
}
private static final class SetString extends CollectionStringExtractor<Set<String>> {
public SetString(String parameter, String defaultValue) {
super(parameter, defaultValue);
}
@Override
protected Set<String> getInstance() {
return new HashSet<String>();
}
}
private static final class SortedSetString extends CollectionStringExtractor<SortedSet<String>> {
public SortedSetString(String parameter, String defaultValue) {
super(parameter, defaultValue);
}
@Override
protected SortedSet<String> getInstance() {
return new TreeSet<String>();
}
}
static MultivaluedParameterExtractor getInstance(Class c,
String parameter, String defaultValue) {
if (List.class == c)
return new ListString(parameter, defaultValue);
else if (Set.class == c)
return new SetString(parameter, defaultValue);
else if (SortedSet.class == c)
return new SortedSetString(parameter, defaultValue);
else
throw new RuntimeException();
}
}