/*
* Copyright 2004-2014 the original author or authors.
*
* 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.springframework.webflow.context.portlet;
import java.util.Iterator;
import java.util.List;
import javax.portlet.PortletRequest;
import org.springframework.binding.collection.StringKeyedMapAdapter;
import org.springframework.util.Assert;
import org.springframework.util.CompositeIterator;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.portlet.multipart.MultipartActionRequest;
import org.springframework.webflow.core.collection.CollectionUtils;
/**
* Map backed by the Portlet request parameter map for accessing request parameters. Also provides support for
* multi-part requests, providing transparent access to the request "fileMap" as a request parameter entry.
*
* @author Keith Donald
* @author Scott Andrews
*/
public class PortletRequestParameterMap extends StringKeyedMapAdapter<Object> {
/**
* The wrapped Portlet request.
*/
private PortletRequest request;
/**
* Create a new map wrapping the parameters of given request.
*/
public PortletRequestParameterMap(PortletRequest request) {
Assert.notNull(request, "The portlet request is required");
this.request = request;
}
protected Object getAttribute(String key) {
if (request instanceof MultipartActionRequest) {
MultipartActionRequest multipartRequest = (MultipartActionRequest) request;
List<MultipartFile> data = multipartRequest.getMultiFileMap().get(key);
if (data != null && data.size() > 0) {
if (data.size() == 1) {
return data.get(0);
} else {
return data;
}
}
}
String[] parameters = request.getParameterValues(key);
if (parameters == null) {
return null;
} else if (parameters.length == 1) {
return parameters[0];
} else {
return parameters;
}
}
protected void setAttribute(String key, Object value) {
throw new UnsupportedOperationException("PortletRequest parameter maps are immutable");
}
protected void removeAttribute(String key) {
throw new UnsupportedOperationException("PortletRequest parameter maps are immutable");
}
protected Iterator<String> getAttributeNames() {
if (request instanceof MultipartActionRequest) {
MultipartActionRequest multipartRequest = (MultipartActionRequest) request;
CompositeIterator<String> iterator = new CompositeIterator<String>();
iterator.add(multipartRequest.getFileMap().keySet().iterator());
iterator.add(CollectionUtils.toIterator(request.getParameterNames()));
return iterator;
} else {
return CollectionUtils.toIterator(request.getParameterNames());
}
}
}