| /* |
| * 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.commons.configuration2.web; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| |
| import javax.servlet.ServletRequest; |
| |
| /** |
| * A configuration wrapper to read the parameters of a servlet request. This configuration is read only, adding or |
| * removing a property will throw an UnsupportedOperationException. |
| * |
| * @since 1.1 |
| */ |
| public class ServletRequestConfiguration extends BaseWebConfiguration { |
| |
| /** Stores the wrapped request. */ |
| protected ServletRequest request; |
| |
| /** |
| * Create a ServletRequestConfiguration using the request parameters. |
| * |
| * @param request the servlet request |
| */ |
| public ServletRequestConfiguration(final ServletRequest request) { |
| this.request = Objects.requireNonNull(request, "config"); |
| } |
| |
| @Override |
| protected Iterator<String> getKeysInternal() { |
| // According to the documentation of getParameterMap(), keys are Strings. |
| final Map<String, ?> parameterMap = request.getParameterMap(); |
| return parameterMap.keySet().iterator(); |
| } |
| |
| @Override |
| protected Object getPropertyInternal(final String key) { |
| final String[] values = request.getParameterValues(key); |
| |
| if (values == null || values.length == 0) { |
| return null; |
| } |
| if (values.length == 1) { |
| return handleDelimiters(values[0]); |
| } |
| // ensure that escape characters in all list elements are removed |
| final List<Object> result = new ArrayList<>(values.length); |
| for (final String value : values) { |
| final Object val = handleDelimiters(value); |
| if (val instanceof Collection) { |
| result.addAll((Collection<?>) val); |
| } else { |
| result.add(val); |
| } |
| } |
| return result; |
| } |
| } |