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.contrib.table.model.simple; 016 017import java.io.Serializable; 018import java.util.HashMap; 019import java.util.Iterator; 020import java.util.List; 021import java.util.Map; 022 023import org.apache.tapestry.contrib.table.model.ITableColumn; 024import org.apache.tapestry.contrib.table.model.ITableColumnModel; 025import org.apache.tapestry.contrib.table.model.common.ArrayIterator; 026 027/** 028 * A minimal implementation of the 029 * {@link org.apache.tapestry.contrib.table.model.ITableColumnModel} interface 030 * that stores columns as an array. 031 * 032 * @author mindbridge 033 */ 034public class SimpleTableColumnModel implements ITableColumnModel, Serializable 035{ 036 private static final long serialVersionUID = 1L; 037 038 private ITableColumn[] m_arrColumns; 039 private Map m_mapColumns; 040 041 public SimpleTableColumnModel(ITableColumn[] arrColumns) 042 { 043 m_arrColumns = arrColumns; 044 045 m_mapColumns = new HashMap(); 046 for (int i = 0; i < m_arrColumns.length; i++) 047 m_mapColumns.put(m_arrColumns[i].getColumnName(), m_arrColumns[i]); 048 } 049 050 public SimpleTableColumnModel(List arrColumns) 051 { 052 this((ITableColumn[]) arrColumns.toArray(new ITableColumn[arrColumns.size()])); 053 } 054 055 public int getColumnCount() 056 { 057 return m_arrColumns.length; 058 } 059 060 public ITableColumn getColumn(int nColumn) 061 { 062 if (nColumn < 0 || nColumn >= m_arrColumns.length) 063 { 064 // error message 065 return null; 066 } 067 return m_arrColumns[nColumn]; 068 } 069 070 public ITableColumn getColumn(String strColumn) 071 { 072 return (ITableColumn) m_mapColumns.get(strColumn); 073 } 074 075 public Iterator getColumns() 076 { 077 return new ArrayIterator(m_arrColumns); 078 } 079 080}