| /* |
| * 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; |
| |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.wicket.util.string.StringValue; |
| |
| /** |
| * Represents request parameters. |
| * |
| * @author Matej Knopp |
| */ |
| public interface IRequestParameters |
| { |
| /** |
| * Returns immutable set of all available parameter names. |
| * |
| * @return list of parameter names |
| */ |
| Set<String> getParameterNames(); |
| |
| /** |
| * Returns single value for parameter with specified name. This method always returns non-null |
| * result even if the parameter does not exist. |
| * |
| * @see StringValue#isNull() |
| * |
| * @param name |
| * parameter name |
| * @return {@link StringValue} wrapping the actual value |
| */ |
| StringValue getParameterValue(String name); |
| |
| /** |
| * Returns list of values for parameter with specified name. If the parameter does not exist |
| * this method returns <code>null</code> |
| * |
| * @param name |
| * parameter name |
| * @return list of all values for given parameter or <code>null</code> if parameter does not |
| * exist |
| */ |
| List<StringValue> getParameterValues(String name); |
| } |