Java tutorial
/** * Copyright (C) cedarsoft GmbH. * * Licensed under the GNU General Public License version 3 (the "License") * with Classpath Exception; you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.cedarsoft.org/gpl3ce * (GPL 3 with Classpath Exception) * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 3 only, as * published by the Free Software Foundation. cedarsoft GmbH designates this * particular file as subject to the "Classpath" exception as provided * by cedarsoft GmbH in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 3 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 3 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact cedarsoft GmbH, 72810 Gomaringen, Germany, * or visit www.cedarsoft.com if you need additional information or * have any questions. */ package com.cedarsoft.utils.excel; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFRow; import javax.annotation.Nonnull; /** * A mapping for a spread sheet column */ public class SpreadSheetColumnMapping<T> { @Nonnull private final CellType type; private final short index; public SpreadSheetColumnMapping(int index, @Nonnull CellType type) { this.type = type; this.index = (short) index; } public short getIndex() { return index; } @Nonnull public CellType getType() { return type; } @Nonnull public T getValue(@Nonnull HSSFCell cell) { return (T) type.getValue(cell); } @Nonnull public T getValue(@Nonnull HSSFRow row) throws NoValueFoundException { HSSFCell cell = row.getCell(getIndex()); if (cell == null) { throw new NoValueFoundException("No cell found at index " + getIndex() + " for row " + row.getRowNum()); } return getValue(cell); } }