/*
* Copyright 2015 JBoss Inc
*
* 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 io.apiman.gateway.engine.beans.util;
import java.io.Serializable;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.Collections;
import java.util.List;
import java.util.Map.Entry;
import java.util.stream.Collectors;
/**
* A map of query parameters to associated values. It is possible to
* have multiple values for a given key.
*
* @author Marc Savy {@literal <msavy@redhat.com>}
*/
public class QueryMap extends CaseInsensitiveStringMultiMap implements Serializable {
private static final long serialVersionUID = -3539301043663183648L;
/**
* Construct map with default capacity.
*/
public QueryMap() {
super();
}
/**
* Construct a QueryMap.
*
* @param sizeHint the size hint
*/
public QueryMap(int sizeHint) {
super(sizeHint);
}
@Override
public String toString() {
return toQueryString();
}
@SuppressWarnings("nls")
public String toQueryString() { // TODO optimise
List<Entry<String, String>> elems = getEntries();
Collections.reverse(elems);
return elems.stream()
.map(pair -> URLEnc(pair.getKey()) + "=" + URLEnc(pair.getValue()))
.collect(Collectors.joining("&"));
}
private String URLEnc(String str) {
try {
return URLEncoder.encode(str, StandardCharsets.UTF_8.name());
} catch (UnsupportedEncodingException e) {
System.err.println("Unable to URLEncode" + str); //$NON-NLS-1$
return str;
}
}
}