XLSReader 추가(진행 중)

src/main/java/cokr/xit/base/docs/xls/Comment.java

@@ -4,6 +4,8 @@ import org.apache.poi.ooxml.POIXMLDocumentPart.RelationPart;
 import org.apache.poi.ss.usermodel.ClientAnchor;
 import org.apache.poi.ss.usermodel.CreationHelper;
 import org.apache.poi.xssf.streaming.SXSSFDrawing;
+import org.apache.poi.xssf.streaming.SXSSFSheet;
+import org.apache.poi.xssf.streaming.SXSSFWorkbook;
 import org.apache.poi.xssf.usermodel.XSSFComment;
 import org.apache.poi.xssf.usermodel.XSSFPictureData;
 import org.apache.poi.xssf.usermodel.XSSFRelation;
@@ -32,7 +34,8 @@ public class Comment {
 	 */
 	public Comment(XLS writer) {
 		this.xlsx = writer;
-		workbook = this.xlsx.workbook.getXSSFWorkbook();
+		if (this.xlsx.workbook instanceof SXSSFWorkbook swb)
+			workbook = swb.getXSSFWorkbook();
 		factory = workbook.getCreationHelper();
 		anchor = factory.createClientAnchor();
 		image = new XLS.Image(this.xlsx);
@@ -50,7 +53,7 @@ public class Comment {
 		anchor.setCol1(col);
 		anchor.setCol2(col + 6);
 
-		SXSSFDrawing drawing = xlsx.worksheet.createDrawingPatriarch();
+		SXSSFDrawing drawing = xlsx.worksheet instanceof SXSSFSheet sst ? sst.createDrawingPatriarch() : null;
 		XSSFComment comment = (XSSFComment)drawing.createCellComment(anchor);
 		comment.setString(str);
 		xlsx.cell.setCellComment(comment);
@@ -64,7 +67,7 @@ public class Comment {
 	public void setBackgroundImage(String title, String path) {
 		int picIndex = image.add(path);
 		XSSFPictureData pic = workbook.getAllPictures().get(picIndex);
-		XSSFVMLDrawing vml = xlsx.worksheet.getVMLDrawing(true);
+		XSSFVMLDrawing vml = xlsx.worksheet instanceof SXSSFSheet sst ? sst.getVMLDrawing(true) : null;
 		RelationPart rp = vml.addRelation(null, XSSFRelation.IMAGES, pic);
 
 		int row = xlsx.cell.getRowIndex();

src/main/java/cokr/xit/base/docs/xls/XLS.java

@@ -4,8 +4,10 @@ import java.io.File;
 import java.io.FileInputStream;
 import java.io.InputStream;
 
-import org.apache.poi.xssf.streaming.SXSSFCell;
-import org.apache.poi.xssf.streaming.SXSSFRow;
+import org.apache.poi.ss.usermodel.Cell;
+import org.apache.poi.ss.usermodel.Row;
+import org.apache.poi.ss.usermodel.Sheet;
+import org.apache.poi.ss.usermodel.Workbook;
 import org.apache.poi.xssf.streaming.SXSSFSheet;
 import org.apache.poi.xssf.streaming.SXSSFWorkbook;
 import org.apache.poi.xssf.usermodel.XSSFWorkbook;
@@ -21,13 +23,13 @@ public abstract class XLS extends AbstractComponent {
 	/**메모리에 적재하는 row의 갯수*/
 	protected int rowAccessWindowSize = 128;
 	/**워크북*/
-	protected SXSSFWorkbook workbook;
+	protected Workbook workbook;
 	/**현재 처리 중인 워크시트*/
-	protected SXSSFSheet worksheet;
+	protected Sheet worksheet;
 	/**현재 처리 중인 row*/
-	protected SXSSFRow row;
+	protected Row row;
 	/**현재 처리 중인 cell*/
-	protected SXSSFCell cell;
+	protected Cell cell;
 
 	/**주어진 InputStream을 로드한다.
 	 * @param <T> XLS 유형
@@ -59,13 +61,14 @@ public abstract class XLS extends AbstractComponent {
 	/**워크북을 반환한다.
 	 * @return 워크북
 	 */
-	public SXSSFWorkbook workbook() {
+	public Workbook workbook() {
 		if (workbook != null)
 			return workbook;
 
 		try {
 			workbook = newWorkbook(null);
-			workbook.setCompressTempFiles(true);
+			if (workbook instanceof SXSSFWorkbook swb)
+				swb.setCompressTempFiles(true);
 			return workbook;
 		} catch (Exception e) {
 			throw runtimeException(e);
@@ -76,10 +79,8 @@ public abstract class XLS extends AbstractComponent {
 	 * @return 워크북
 	 * @throws Exception
 	 */
-	protected SXSSFWorkbook newWorkbook(InputStream input) throws Exception {
-		return input == null ?
-			new SXSSFWorkbook(rowAccessWindowSize) :
-			new SXSSFWorkbook(new XSSFWorkbook(input), rowAccessWindowSize);
+	protected Workbook newWorkbook(InputStream input) throws Exception {
+		return new XSSFWorkbook(input);
 	}
 
 	/**지정한 인덱스의 워크시트를 반환한다.
@@ -88,12 +89,13 @@ public abstract class XLS extends AbstractComponent {
 	 * @return 워크시트
 	 */
 	public XLS worksheet(int index) {
-		SXSSFSheet sheet = null;
+		Sheet sheet = null;
 		try {
 			sheet = workbook().getSheetAt(index);
 		} catch (Exception e) {
 			sheet = workbook().createSheet();
-			sheet.setRandomAccessWindowSize(rowAccessWindowSize);
+			if (sheet instanceof SXSSFSheet sst)
+				sst.setRandomAccessWindowSize(rowAccessWindowSize);
 		}
 
 		if (!sheet.equals(worksheet)) {
@@ -110,13 +112,14 @@ public abstract class XLS extends AbstractComponent {
 	 * @return 워크시트
 	 */
 	public XLS worksheet(String name) {
-		SXSSFSheet sheet = null;
+		Sheet sheet = null;
 		try {
-			SXSSFWorkbook wb = workbook();
+			Workbook wb = workbook();
 			sheet = wb.getSheet(name);
 			if (sheet == null) {
 				sheet = wb.createSheet(name);
-				sheet.setRandomAccessWindowSize(rowAccessWindowSize);
+				if (sheet instanceof SXSSFSheet sst)
+					sst.setRandomAccessWindowSize(rowAccessWindowSize);
 			}
 
 			if (!sheet.equals(worksheet)) {

src/main/java/cokr/xit/base/docs/xls/XLSReader.java

@@ -0,0 +1,60 @@
+package cokr.xit.base.docs.xls;
+
+import java.io.File;
+import java.io.InputStream;
+
+import org.apache.poi.ss.usermodel.Cell;
+import org.apache.poi.ss.usermodel.DateUtil;
+
+public class XLSReader extends XLS {
+	public XLSReader open(InputStream input) {
+		load(input);
+		return this;
+	}
+
+	public XLSReader open(File file) {
+		load(file);
+		return this;
+	}
+
+	@Override
+	public XLSReader worksheet(int index) {
+		super.worksheet(index);
+		return this;
+	}
+
+	@Override
+	public XLSReader worksheet(String name) {
+		super.worksheet(name);
+		return this;
+	}
+
+	@Override
+	public XLSReader row(int index) {
+		super.row(index);
+		return this;
+	}
+
+	@Override
+	public XLSReader col(int index) {
+		super.col(index);
+		return this;
+	}
+
+	@Override
+	public XLSReader cell(int row, int col) {
+		return row(row).col(col);
+	}
+
+	public String valueOf(Cell cell) {
+		return switch (cell.getCellType()) {
+		case STRING -> cell.getStringCellValue();
+		case NUMERIC -> DateUtil.isCellDateFormatted(cell) ?
+			cell.getDateCellValue().toString() :
+			String.valueOf(cell.getNumericCellValue());
+		case BOOLEAN -> String.valueOf(cell.getBooleanCellValue());
+		case FORMULA -> cell.getCellFormula();
+		default -> "";
+		};
+	}
+}

src/main/java/cokr/xit/base/docs/xls/XLSWriter.java

@@ -15,7 +15,11 @@ import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
 import org.apache.poi.ss.usermodel.CellStyle;
+import org.apache.poi.ss.usermodel.Workbook;
 import org.apache.poi.ss.util.CellRangeAddress;
+import org.apache.poi.xssf.streaming.SXSSFSheet;
+import org.apache.poi.xssf.streaming.SXSSFWorkbook;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 
 import cokr.xit.foundation.Downloadable;
 
@@ -43,6 +47,13 @@ public class XLSWriter extends XLS {
 		return this;
 	}
 
+	@Override
+	protected Workbook newWorkbook(InputStream input) throws Exception {
+		return input == null ?
+			new SXSSFWorkbook(rowAccessWindowSize) :
+			new SXSSFWorkbook(new XSSFWorkbook(input), rowAccessWindowSize);
+	}
+
 	@Override
 	public XLSWriter worksheet(int index) {
 		super.worksheet(index);
@@ -327,8 +338,8 @@ public class XLSWriter extends XLS {
 	 * @return 현재 XLSWriter
 	 */
 	public XLSWriter trackWidth(int... cols) {
-		if (!isEmpty(cols))
-			worksheet.trackColumnsForAutoSizing(trackWidths = IntStream.of(cols).boxed().collect(Collectors.toCollection(LinkedHashSet<Integer>::new)));
+		if (!isEmpty(cols) && worksheet instanceof SXSSFSheet sst)
+			sst.trackColumnsForAutoSizing(trackWidths = IntStream.of(cols).boxed().collect(Collectors.toCollection(LinkedHashSet<Integer>::new)));
 		return this;
 	}
 
@@ -348,7 +359,8 @@ public class XLSWriter extends XLS {
 	public void write(OutputStream out) {
 		try {
 			workbook.write(out);
-			workbook.dispose();
+			if (workbook instanceof SXSSFWorkbook swb)
+				swb.dispose();
 		} catch (Exception e) {
 			throw runtimeException(e);
 		} finally {
@@ -372,8 +384,8 @@ public class XLSWriter extends XLS {
 
 	@Override
 	protected void clear(boolean all) {
-		if (trackWidths != null)
-			worksheet.untrackColumnsForAutoSizing(trackWidths);
+		if (trackWidths != null && worksheet instanceof SXSSFSheet sst)
+			sst.untrackColumnsForAutoSizing(trackWidths);
 		super.clear(all);
 		trackWidths = null;
 	}

src/test/java/cokr/xit/base/docs/xls/XLSTest.java

@@ -182,6 +182,14 @@ public class XLSTest {
 		xlsx.write(file("xlsx-test.xlsx"));
 	}
 
+	@Test
+	void read() {
+		XLSReader xlsx = new XLSReader()
+			.open(new File("src\\test\\resources\\file\\xlsx-test.xlsx"))
+			.worksheet(0)
+			.cell(0, 0);
+	}
+
 	static class TestObject {
 		private String
 			field1,