org.apache.tapestry5.upload.internal.services.ParameterValue Maven / Gradle / Ivy
// 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 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;
}
}