001// Copyright 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. 014 015/* 016 * Created on Jul 6, 2005 017 */ 018package org.apache.tapestry.contrib.table.model.simple; 019 020import java.util.StringTokenizer; 021 022import org.apache.hivemind.ApplicationRuntimeException; 023import org.apache.tapestry.contrib.table.components.TableMessages; 024import org.apache.tapestry.services.DataSqueezer; 025import org.apache.tapestry.util.io.SqueezeAdaptor; 026 027public class SimpleTableStateAdaptor implements SqueezeAdaptor 028{ 029 030 private static final String PREFIX = "t"; 031 032 /** 033 * @see SqueezeAdaptor#getPrefix() 034 */ 035 public String getPrefix() 036 { 037 return PREFIX; 038 } 039 040 /** 041 * @see SqueezeAdaptor#getDataClass() 042 */ 043 public Class getDataClass() 044 { 045 return SimpleTableState.class; 046 } 047 048 public String squeeze(DataSqueezer squeezer, Object data) 049 { 050 SimpleTableState objState = (SimpleTableState) data; 051 052 StringBuffer buf = new StringBuffer(); 053 buf.append(objState.getPagingState().getPageSize()); 054 buf.append(":"); 055 buf.append(objState.getPagingState().getCurrentPage()); 056 buf.append(":"); 057 String strSortColumn = objState.getSortingState().getSortColumn(); 058 if (strSortColumn == null) 059 strSortColumn = ""; 060 buf.append(strSortColumn); 061 buf.append(":"); 062 buf.append(objState.getSortingState().getSortOrder() ? 'T' : 'F'); 063 064 return buf.toString(); 065 } 066 067 public Object unsqueeze(DataSqueezer squeezer, String string) 068 { 069 StringTokenizer strTok = new StringTokenizer(string, ":"); 070 if (strTok.countTokens() != 4) 071 throw new ApplicationRuntimeException(TableMessages.invalidTableStateFormat(string)); 072 int nPageSize = Integer.parseInt(strTok.nextToken()); 073 int nCurrentPage = Integer.parseInt(strTok.nextToken()); 074 String strSortColumn = strTok.nextToken(); 075 if (strSortColumn.equals("")) 076 strSortColumn = null; 077 boolean bSortOrder = strTok.nextToken().equals("T"); 078 079 return new SimpleTableState(nPageSize, nCurrentPage, strSortColumn, bSortOrder); 080 } 081 082}