001// Copyright 2004, 2005 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry.engine; 016 017import java.util.Map; 018 019import org.apache.hivemind.util.Defense; 020import org.apache.tapestry.util.QueryParameterMap; 021 022/** 023 * Implementation of {@link org.apache.tapestry.engine.ServiceEncoding}, which adds the ability to 024 * determine when the encoding has been modified. 025 * 026 * @author Howard M. Lewis Ship 027 * @since 4.0 028 */ 029public class ServiceEncodingImpl implements ServiceEncoding 030{ 031 private String _servletPath; 032 033 private String _pathInfo; 034 035 /** 036 * Map of query parameter values; key is string name, value is either a string, an array of 037 * strings, or null. Could have done this with subclassing rather than delegation. 038 */ 039 040 private final QueryParameterMap _parameters; 041 042 private boolean _modified; 043 044 public boolean isModified() 045 { 046 return _modified; 047 } 048 049 public void resetModified() 050 { 051 _modified = false; 052 } 053 054 /** 055 * Creates a new instance with a new map of parameters. 056 */ 057 058 public ServiceEncodingImpl(String servletPath) 059 { 060 this(servletPath, null, new QueryParameterMap()); 061 } 062 063 public ServiceEncodingImpl(String servletPath, Map parametersMap) 064 { 065 this(servletPath, null, new QueryParameterMap(parametersMap)); 066 } 067 068 public ServiceEncodingImpl(String servletPath, String pathInfo, QueryParameterMap parameters) 069 { 070 Defense.notNull(servletPath, "servletPath"); 071 Defense.notNull(parameters, "parameters"); 072 073 _servletPath = servletPath; 074 _pathInfo = pathInfo; 075 076 _parameters = parameters; 077 } 078 079 public String getParameterValue(String name) 080 { 081 return _parameters.getParameterValue(name); 082 } 083 084 public String[] getParameterValues(String name) 085 { 086 return _parameters.getParameterValues(name); 087 } 088 089 public void setServletPath(String servletPath) 090 { 091 Defense.notNull(servletPath, "servletPath"); 092 093 _servletPath = servletPath; 094 _modified = true; 095 } 096 097 public void setParameterValue(String name, String value) 098 { 099 _parameters.setParameterValue(name, value); 100 101 _modified = true; 102 } 103 104 public void setParameterValues(String name, String[] values) 105 { 106 _parameters.setParameterValues(name, values); 107 108 _modified = true; 109 } 110 111 public String getServletPath() 112 { 113 return _servletPath; 114 } 115 116 public String[] getParameterNames() 117 { 118 return _parameters.getParameterNames(); 119 } 120 121 public String getPathInfo() 122 { 123 return _pathInfo; 124 } 125}