| /* |
| * 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.struts2.dispatcher; |
| |
| import java.util.Objects; |
| |
| import org.apache.commons.text.StringEscapeUtils; |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| |
| public interface Parameter { |
| |
| String getName(); |
| |
| String getValue(); |
| |
| boolean isDefined(); |
| |
| boolean isMultiple(); |
| |
| String[] getMultipleValues(); |
| |
| Object getObject(); |
| |
| class Request implements Parameter { |
| |
| private static final Logger LOG = LogManager.getLogger(Request.class); |
| |
| private final String name; |
| private final Object value; |
| |
| public Request(String name, Object value) { |
| this.name = name; |
| this.value = value; |
| } |
| |
| @Override |
| public String getName() { |
| return name; |
| } |
| |
| @Override |
| public String getValue() { |
| String[] values = toStringArray(); |
| return (values != null && values.length > 0) ? values[0] : null; |
| } |
| |
| private String[] toStringArray() { |
| if (value == null) { |
| LOG.trace("The value is null, empty array of string will be returned!"); |
| return new String[]{}; |
| } else if (value.getClass().isArray()) { |
| LOG.trace("Converting value {} to array of strings", value); |
| |
| Object[] values = (Object[]) value; |
| String[] strValues = new String[values.length]; |
| int i = 0; |
| for (Object v : values) { |
| strValues[i] = Objects.toString(v, null); |
| i++; |
| } |
| return strValues; |
| } else { |
| LOG.trace("Converting value {} to simple string", value); |
| return new String[]{ value.toString() }; |
| } |
| } |
| |
| @Override |
| public boolean isDefined() { |
| return value != null && toStringArray().length > 0; |
| } |
| |
| @Override |
| public boolean isMultiple() { |
| return isDefined() && toStringArray().length > 1; |
| } |
| |
| @Override |
| public String[] getMultipleValues() { |
| return toStringArray(); |
| } |
| |
| @Override |
| public Object getObject() { |
| return value; |
| } |
| |
| @Override |
| public String toString() { |
| return StringEscapeUtils.escapeHtml4(getValue()); |
| } |
| } |
| |
| class File extends Request { |
| |
| public File(String name, Object value) { |
| super(name, value); |
| } |
| |
| @Override |
| public String toString() { |
| return "File{" + |
| "name='" + getName() + '\'' + |
| '}'; |
| } |
| } |
| |
| class Empty implements Parameter { |
| |
| private String name; |
| |
| public Empty(String name) { |
| this.name = name; |
| } |
| |
| @Override |
| public String getName() { |
| return name; |
| } |
| |
| @Override |
| public String getValue() { |
| return null; |
| } |
| |
| @Override |
| public boolean isDefined() { |
| return false; |
| } |
| |
| @Override |
| public boolean isMultiple() { |
| return false; |
| } |
| |
| @Override |
| public String[] getMultipleValues() { |
| return new String[0]; |
| } |
| |
| @Override |
| public Object getObject() { |
| return null; |
| } |
| |
| @Override |
| public String toString() { |
| return "Empty{" + |
| "name='" + name + '\'' + |
| '}'; |
| } |
| } |
| |
| } |