// 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; | |
} | |
} |