Java tutorial
package org.openswing.swing.export.java; import java.io.*; import java.lang.reflect.*; import java.sql.Date; import java.text.*; import java.util.*; import java.awt.*; import org.openswing.swing.message.receive.java.*; import org.openswing.swing.message.send.java.*; import com.lowagie.text.*; import com.lowagie.text.Font; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.*; /** * <p>Title: OpenSwing Framework</p> * <p>Description: This class is used to export grid data in PDF format.</p> * <p>Copyright: Copyright (C) 2006 Mauro Carniel</p> * * <p> This file is part of OpenSwing Framework. * This library is free software; you can redistribute it and/or * modify it under the terms of the (LGPL) Lesser General Public * License as published by the Free Software Foundation; * * GNU LESSER GENERAL PUBLIC LICENSE * Version 2.1, February 1999 * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * The author may be contacted at: * maurocarniel@tin.it</p> * * @author Mauro Carniel * @version 1.0 */ public class ExportToPDF15 { public ExportToPDF15() { } /** * @param opt export options * @return Excel document, as byte array */ public byte[] getDocument(ExportOptions opt) throws Throwable { // Document document = new Document(new Rectangle(total+30,PageSize.A4.height())); Document document = new Document(new Rectangle(PageSize.A4.getWidth(), PageSize.A4.getHeight())); ByteArrayOutputStream baos = new ByteArrayOutputStream(); PdfWriter w = PdfWriter.getInstance(document, baos); document.open(); Object obj = null; for (int i = 0; i < opt.getComponentsExportOptions().size(); i++) { obj = opt.getComponentsExportOptions().get(i); processComponent(null, 0, document, opt, obj); } document.close(); return baos.toByteArray(); } private void processComponent(PdfPTable table, int parentTableCols, Document document, ExportOptions opt, Object obj) throws Throwable { if (obj != null) { GridExportCallbacks callbacks = null; if (obj instanceof GridExportOptions) { callbacks = (GridExportCallbacks) ((GridExportOptions) obj).getCallbacks(); if (callbacks != null) processComponent(table, parentTableCols, document, opt, callbacks.getHeaderComponent()); prepareGrid(table, parentTableCols, document, opt, (GridExportOptions) obj); if (callbacks != null) processComponent(table, parentTableCols, document, opt, callbacks.getFooterComponent()); } else if (obj instanceof ComponentExportOptions) prepareGenericComponent(table, parentTableCols, document, opt, (ComponentExportOptions) obj); else return; if (table != null) { PdfPCell cell = new PdfPCell(new Paragraph("\n")); cell.setColspan(parentTableCols); table.addCell(cell); } else document.add(new Paragraph("\n")); } } private void prepareGenericComponent(PdfPTable parentTable, int parentTableCols, Document document, ExportOptions exportOptions, ComponentExportOptions opt) throws Throwable { if (opt.getCellsContent() == null || opt.getCellsContent().length == 0) return; int cols = opt.getCellsContent()[0].length; Object[] row = null; Object obj = null; SimpleDateFormat sdatf = new SimpleDateFormat(exportOptions.getDateTimeFormat()); int[] headerwidths = new int[cols]; for (int i = 0; i < headerwidths.length; i++) headerwidths[i] = (int) PageSize.A4.getWidth() / cols; PdfPTable table = new PdfPTable(cols); table.setWidths(headerwidths); table.setWidthPercentage(90); table.getDefaultCell().setBorderWidth(2); table.getDefaultCell().setBorderColor(Color.black); table.getDefaultCell().setGrayFill(exportOptions.getExportToPDFAdapter().getHeaderGrayFill()); table.getDefaultCell().setPadding(3); table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER); table.getDefaultCell().setVerticalAlignment(Element.ALIGN_MIDDLE); table.setHeaderRows(0); table.getDefaultCell().setBorderWidth(0); table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_LEFT); table.getDefaultCell().setVerticalAlignment(Element.ALIGN_TOP); for (int i = 0; i < opt.getCellsContent().length; i++) { row = opt.getCellsContent()[i]; for (int j = 0; j < row.length; j++) { obj = row[j]; if (obj != null) { if (obj instanceof Date || obj instanceof java.util.Date || obj instanceof java.sql.Timestamp) { table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(new Phrase(sdatf.format((java.util.Date) obj), (Font) exportOptions.getExportToPDFAdapter().getGenericComponentFont(i, j, obj))); } else { table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_LEFT); table.addCell(new Phrase(obj.toString(), (Font) exportOptions.getExportToPDFAdapter().getGenericComponentFont(i, j, obj))); } } else { table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_LEFT); table.addCell(new Phrase("", (Font) exportOptions.getExportToPDFAdapter().getGenericComponentFont(i, j, null))); } } } if (parentTable != null) { PdfPCell cell = new PdfPCell(table); cell.setColspan(parentTableCols); parentTable.addCell(cell); } else document.add(table); } private void prepareGrid(PdfPTable parentTable, int parentTableCols, Document document, ExportOptions exportOptions, GridExportOptions opt) throws Throwable { // prepare vo getters methods... String methodName = null; String attributeName = null; Hashtable gettersMethods = new Hashtable(); Method[] voMethods = opt.getValueObjectType().getMethods(); for (int i = 0; i < voMethods.length; i++) { methodName = voMethods[i].getName(); if (methodName.startsWith("get")) { attributeName = methodName.substring(3, 4).toLowerCase() + methodName.substring(4); if (opt.getExportAttrColumns().contains(attributeName)) gettersMethods.put(attributeName, voMethods[i]); } } Response response = null; int start = 0; int rownum = 0; Object value = null; Object vo = null; int type; SimpleDateFormat sdf = new SimpleDateFormat(exportOptions.getDateFormat()); SimpleDateFormat sdatf = new SimpleDateFormat(exportOptions.getDateTimeFormat()); SimpleDateFormat stf = new SimpleDateFormat(exportOptions.getTimeFormat()); int headerwidths[] = new int[opt.getExportColumns().size()]; int total = 0; for (int i = 0; i < opt.getExportColumns().size(); i++) { headerwidths[i] = Math.max(opt.getExportColumns().get(i).toString().length() * 10, ((Integer) opt.getColumnsWidth().get(opt.getExportAttrColumns().get(i))).intValue()); total += headerwidths[i]; } Paragraph line = null; if (opt.getTitle() != null && !opt.getTitle().equals("")) { line = new Paragraph(opt.getTitle(), (Font) exportOptions.getExportToPDFAdapter().getFontTitle()); line.setAlignment(Element.ALIGN_CENTER); document.add(line); document.add(new Paragraph("\n")); } String[] filters = opt.getFilteringConditions(); if (filters != null) { for (int i = 0; i < filters.length; i++) { line = new Paragraph(filters[i]); document.add(line); } document.add(new Paragraph("\n")); } PdfPTable table = new PdfPTable(opt.getExportColumns().size()); table.setWidths(headerwidths); table.setWidthPercentage(90); table.getDefaultCell().setBorderWidth(2); table.getDefaultCell().setBorderColor(Color.black); table.getDefaultCell().setGrayFill(exportOptions.getExportToPDFAdapter().getHeaderGrayFill()); table.getDefaultCell().setPadding(3); table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER); table.getDefaultCell().setVerticalAlignment(Element.ALIGN_MIDDLE); for (int i = 0; i < opt.getExportColumns().size(); i++) table.addCell(new Phrase(opt.getExportColumns().get(i).toString(), (Font) exportOptions .getExportToPDFAdapter().getHeaderFont(opt.getExportAttrColumns().get(i).toString()))); table.setHeaderRows(1); table.getDefaultCell().setBorderWidth(1); table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_LEFT); table.getDefaultCell().setVerticalAlignment(Element.ALIGN_TOP); for (int j = 0; j < opt.getTopRows().size(); j++) { // create a row for each top rows... table.getDefaultCell().setGrayFill(exportOptions.getExportToPDFAdapter().getTopRowsGrayFill(j)); vo = opt.getTopRows().get(j); appendRow(document, exportOptions, table, vo, opt, gettersMethods, sdf, sdatf, stf, j, 0); } do { response = opt.getGridDataLocator().loadData(GridParams.NEXT_BLOCK_ACTION, start, opt.getFilteredColumns(), opt.getCurrentSortedColumns(), opt.getCurrentSortedVersusColumns(), opt.getValueObjectType(), opt.getOtherGridParams()); if (response.isError()) throw new Exception(response.getErrorMessage()); boolean even = false; for (int j = 0; j < ((VOListResponse) response).getRows().size(); j++) { if (even) { table.getDefaultCell().setGrayFill(exportOptions.getExportToPDFAdapter().getEvenRowsGrayFill()); even = false; } else { table.getDefaultCell().setGrayFill(exportOptions.getExportToPDFAdapter().getOddRowsGrayFill()); even = true; } vo = ((VOListResponse) response).getRows().get(j); appendRow(document, exportOptions, table, vo, opt, gettersMethods, sdf, sdatf, stf, rownum, 1); rownum++; } start = start + ((VOListResponse) response).getRows().size(); if (!((VOListResponse) response).isMoreRows()) break; } while (rownum < opt.getMaxRows()); for (int j = 0; j < opt.getBottomRows().size(); j++) { // create a row for each bottom rows... table.getDefaultCell().setGrayFill(exportOptions.getExportToPDFAdapter().getBottomRowsGrayFill(j)); vo = opt.getBottomRows().get(j); appendRow(document, exportOptions, table, vo, opt, gettersMethods, sdf, sdatf, stf, j, 2); } if (parentTable != null) { PdfPCell cell = new PdfPCell(table); cell.setColspan(parentTableCols); parentTable.addCell(cell); } else document.add(table); } /** * Append current row to result. * @return current row to append */ private void appendRow(Document document, ExportOptions exportOptions, PdfPTable table, Object vo, GridExportOptions opt, Hashtable gettersMethods, SimpleDateFormat sdf, SimpleDateFormat sdatf, SimpleDateFormat stf, int row, int tableType // 0 = header, 1 = body, 2 = footer ) throws Throwable { int type; String aName = null; Method getter = null; Class clazz = null; Object obj = null; for (int i = 0; i < opt.getExportColumns().size(); i++) { // value = ((Method)gettersMethods.get(opt.getExportAttrColumns().get(i))).invoke(vo,new Object[0]); clazz = vo.getClass(); obj = vo; aName = opt.getExportAttrColumns().get(i).toString(); // check if the specified attribute is a composed attribute and there exist inner v.o. to instantiate... while (aName.indexOf(".") != -1) { try { getter = clazz.getMethod( "get" + aName.substring(0, 1).toUpperCase() + aName.substring(1, aName.indexOf(".")), new Class[0]); } catch (NoSuchMethodException ex2) { getter = clazz.getMethod( "is" + aName.substring(0, 1).toUpperCase() + aName.substring(1, aName.indexOf(".")), new Class[0]); } aName = aName.substring(aName.indexOf(".") + 1); clazz = getter.getReturnType(); obj = getter.invoke(obj, new Object[0]); if (obj == null) break; } try { getter = clazz.getMethod("get" + aName.substring(0, 1).toUpperCase() + aName.substring(1), new Class[0]); } catch (NoSuchMethodException ex2) { getter = clazz.getMethod("is" + aName.substring(0, 1).toUpperCase() + aName.substring(1), new Class[0]); } if (obj != null) obj = getter.invoke(obj, new Object[0]); if (obj != null) { if (obj instanceof Date || obj instanceof java.util.Date || obj instanceof java.sql.Timestamp) { type = ((Integer) opt.getColumnsType().get(opt.getExportAttrColumns().get(i))).intValue(); if (type == opt.TYPE_DATE) { table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(new Phrase(sdf.format((java.util.Date) obj), (Font) exportOptions.getExportToPDFAdapter().getRowFont(aName))); } else if (type == opt.TYPE_DATE_TIME) { table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(new Phrase(sdatf.format((java.util.Date) obj), (Font) exportOptions.getExportToPDFAdapter().getRowFont(aName))); } else if (type == opt.TYPE_TIME) { table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER); table.addCell(new Phrase(stf.format((java.util.Date) obj), (Font) exportOptions.getExportToPDFAdapter().getRowFont(aName))); } } else { table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_LEFT); table.addCell(new Phrase(obj.toString(), (Font) exportOptions.getExportToPDFAdapter().getRowFont(aName))); } } else { table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_LEFT); table.addCell(new Phrase("", (Font) exportOptions.getExportToPDFAdapter().getRowFont(aName))); } } if (opt.getCallbacks() != null) { if (tableType == 0) processComponent(table, opt.getExportColumns().size(), document, exportOptions, opt.getCallbacks().getComponentPerRowInHeader((ValueObject) vo, row)); else if (tableType == 1) processComponent(table, opt.getExportColumns().size(), document, exportOptions, opt.getCallbacks().getComponentPerRow((ValueObject) vo, row)); else if (tableType == 2) processComponent(table, opt.getExportColumns().size(), document, exportOptions, opt.getCallbacks().getComponentPerRowInFooter((ValueObject) vo, row)); } } }