| // Copyright 2007, 2008 The Apache Software Foundation |
| // |
| // Licensed 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.apache.tapestry5.upload.internal.services; |
| |
| import static org.apache.tapestry5.ioc.internal.util.CollectionFactory.newList; |
| |
| import java.util.List; |
| |
| /** |
| * Holds single or multivalued values. |
| */ |
| public class ParameterValue |
| { |
| private final List<String> values = newList(); |
| |
| public static final ParameterValue NULL = new ParameterValue() |
| { |
| @Override |
| public String single() |
| { |
| return null; |
| } |
| |
| @Override |
| public String[] multi() |
| { |
| return null; |
| } |
| }; |
| |
| public ParameterValue(String value) |
| { |
| values.add(value); |
| } |
| |
| public ParameterValue(String... values) |
| { |
| for (String v : values) |
| { |
| add(v); |
| } |
| } |
| |
| /** |
| * @return Single value of parameter (or first value if there are multiple values) |
| */ |
| public String single() |
| { |
| return values.get(0); |
| } |
| |
| /** |
| * @return All values of parameter |
| */ |
| public String[] multi() |
| { |
| return values.toArray(new String[values.size()]); |
| } |
| |
| public void add(String value) |
| { |
| values.add(value); |
| } |
| |
| public boolean isMulti() |
| { |
| return values.size() > 1; |
| } |
| } |