org.apache.wicket.request.parameter.UrlRequestParametersAdapter Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.wicket.request.parameter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import org.apache.wicket.request.IRequestParameters;
import org.apache.wicket.request.Url;
import org.apache.wicket.request.Url.QueryParameter;
import org.apache.wicket.util.lang.Args;
import org.apache.wicket.util.lang.Objects;
import org.apache.wicket.util.string.StringValue;
/**
* Utility class that expresses query parameters from {@link Url} as {@link IRequestParameters}.
*
* @author Matej Knopp
*/
public class UrlRequestParametersAdapter implements IRequestParameters
{
private final Url url;
/**
* Construct.
*
* @param url
*/
public UrlRequestParametersAdapter(final Url url)
{
Args.notNull(url, "url");
this.url = url;
}
/**
* @see org.apache.wicket.request.IRequestParameters#getParameterNames()
*/
@Override
public Set getParameterNames()
{
Set result = new LinkedHashSet<>();
for (QueryParameter parameter : url.getQueryParameters())
{
result.add(parameter.getName());
}
return Collections.unmodifiableSet(result);
}
/**
* @see org.apache.wicket.request.IRequestParameters#getParameterValue(java.lang.String)
*/
@Override
public StringValue getParameterValue(final String name)
{
return url.getQueryParameterValue(name);
}
/**
* @see org.apache.wicket.request.IRequestParameters#getParameterValues(java.lang.String)
*/
@Override
public List getParameterValues(final String name)
{
List values = null;
for (QueryParameter parameter : url.getQueryParameters())
{
if (Objects.equal(name, parameter.getName()))
{
if (values == null)
{
values = new ArrayList<>();
}
values.add(StringValue.valueOf(parameter.getValue()));
}
}
return values != null ? Collections.unmodifiableList(values) : null;
}
}