Java tutorial
/******************************************************************************* * Copyright (c) 2011 University of Western Australia. All rights reserved. * * This file is part of The Ark. * * The Ark is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 3 * of the License, or (at your option) any later version. * * The Ark 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 for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. ******************************************************************************/ package au.org.theark.phenotypic.web.component.phenodataupload; import java.io.IOException; import java.io.InputStream; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.MultiLineLabel; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.form.upload.FileUpload; import org.apache.wicket.spring.injection.annot.SpringBean; import au.org.theark.core.exception.ArkBaseException; import au.org.theark.core.exception.FileFormatException; import au.org.theark.core.model.pheno.entity.PhenoDataSetCollection; import au.org.theark.core.model.pheno.entity.PhenoDataSetGroup; import au.org.theark.core.model.study.entity.CustomFieldGroup; import au.org.theark.core.service.IArkCommonService; import au.org.theark.core.vo.UploadVO; import au.org.theark.core.web.component.button.ArkDownloadAjaxButton; import au.org.theark.core.web.component.worksheet.ArkExcelWorkSheetAsGrid; import au.org.theark.core.web.form.AbstractWizardForm; import au.org.theark.core.web.form.AbstractWizardStepPanel; import au.org.theark.phenotypic.web.component.phenodataupload.form.WizardForm; import au.org.theark.phenotypic.service.IPhenotypicService; import au.org.theark.phenotypic.util.PhenoDataUploadValidator; /** * The first step of this wizard. */ public class PhenoDataUploadStep2 extends AbstractWizardStepPanel { private static final long serialVersionUID = -4070515786803720370L; private Form<UploadVO> containerForm; private String validationMessage; public java.util.Collection<String> validationMessages = null; @SpringBean(name = au.org.theark.core.Constants.ARK_COMMON_SERVICE) private IArkCommonService iArkCommonService; @SpringBean(name = au.org.theark.core.Constants.ARK_PHENO_DATA_SERVICE) private IPhenotypicService iPhenotypicService; private ArkDownloadAjaxButton downloadValMsgButton = new ArkDownloadAjaxButton("downloadValMsg", null, null, "txt") { private static final long serialVersionUID = 1L; @Override protected void onError(AjaxRequestTarget target, Form<?> form) { this.error("Unexpected Error: Download request could not be processed"); } }; public PhenoDataUploadStep2(String id) { super(id); initialiseDetailForm(); } public PhenoDataUploadStep2(String id, Form<UploadVO> containerForm, WizardForm wizardForm) { super(id, "Step 2/5: File Format Validation", "The file format has been validated. If there are no errors, click Next to continue."); this.containerForm = containerForm; initialiseDetailForm(); } private void initialiseDetailForm() { setValidationMessage(containerForm.getModelObject().getValidationMessagesAsString()); addOrReplace(new MultiLineLabel("multiLineLabel", getValidationMessage())); add(downloadValMsgButton); } public void setValidationMessage(String validationMessage) { this.validationMessage = validationMessage; } public String getValidationMessage() { return validationMessage; } @Override public void handleWizardState(AbstractWizardForm<?> form, AjaxRequestTarget target) { } @Override public void onStepInNext(AbstractWizardForm<?> form, AjaxRequestTarget target) { if (containerForm.getModelObject().getPreviousStepOutCompleted()) { try { FileUpload fileUpload = containerForm.getModelObject().getFileUpload(); InputStream inputStream = fileUpload.getInputStream();//TODO : should something this big be thrown around model object in wicket? String filename = fileUpload.getClientFileName(); String fileFormat = filename.substring(filename.lastIndexOf('.') + 1).toUpperCase(); char delimChar = containerForm.getModelObject().getUpload().getDelimiterType() .getDelimiterCharacter(); // Only allow csv, txt or xls TODO : if we are hardcoding things like this, why do we fetch file formats from db and store as a fk reference? if (!(fileFormat.equalsIgnoreCase("CSV") || fileFormat.equalsIgnoreCase("TXT") || fileFormat.equalsIgnoreCase("XLS"))) { throw new FileFormatException(); } PhenoDataUploadValidator phenoDataUploadValidator = new PhenoDataUploadValidator(iArkCommonService, iPhenotypicService); PhenoDataSetCollection phenoCollectionCriteria = containerForm.getModelObject() .getPhenoCollection(); PhenoDataSetGroup cfgSelected = containerForm.getModelObject().getPhenoDataSetGroup(); try { validationMessages = phenoDataUploadValidator.validateCustomFieldFileFormat( containerForm.getModelObject(), phenoCollectionCriteria, cfgSelected); } catch (ArkBaseException arkBaseException) { validationMessage = arkBaseException.getMessage(); } ArkExcelWorkSheetAsGrid arkExcelWorkSheetAsGrid = new ArkExcelWorkSheetAsGrid("gridView", inputStream, fileFormat, delimChar, fileUpload, iArkCommonService .getUserConfig(au.org.theark.core.Constants.CONFIG_ROWS_PER_PAGE).getIntValue(), containerForm.getModelObject().getUpload().getUploadType()); arkExcelWorkSheetAsGrid.setOutputMarkupId(true); //WebMarkupContainer wizardDataGridKeyContainer = new WebMarkupContainer("wizardDataGridKeyContainer"); //wizardDataGridKeyContainer.setVisible(false); //wizardDataGridKeyContainer.setOutputMarkupId(true); form.setArkExcelWorkSheetAsGrid(arkExcelWorkSheetAsGrid); form.getWizardPanelFormContainer().addOrReplace(arkExcelWorkSheetAsGrid); form.setArkExcelWorkSheetAsGrid(arkExcelWorkSheetAsGrid); //form.getWizardPanelFormContainer().addOrReplace(wizardDataGridKeyContainer); target.add(form.getWizardPanelFormContainer()); containerForm.getModelObject().setValidationMessages(validationMessages); validationMessage = containerForm.getModelObject().getValidationMessagesAsString(); addOrReplace(new MultiLineLabel("multiLineLabel", validationMessage)); if (validationMessage != null && validationMessage.length() > 0) { this.containerForm.getModelObject().getUpload() .setUploadStatus(iArkCommonService.getUploadStatusFor( au.org.theark.phenotypic.web.Constants.UPLOAD_STATUS_OF_ERROR_IN_FILE_VALIDATION)); this.containerForm.getModelObject().getUpload().setFilename(filename);//have to reset this because the container has the file name...luckily it never changes iArkCommonService.updateUpload(this.containerForm.getModelObject().getUpload()); log.warn("validation = " + validationMessage); form.getNextButton().setEnabled(false); target.add(form.getWizardButtonContainer()); downloadValMsgButton = new ArkDownloadAjaxButton("downloadValMsg", "ValidationMessage", validationMessage, "txt") { private static final long serialVersionUID = 1L; @Override protected void onError(AjaxRequestTarget target, Form<?> form) { this.error("Unexpected Error: Download request could not be processed"); } }; addOrReplace(downloadValMsgButton); target.add(downloadValMsgButton); } } catch (IOException e) { validationMessage = "Error attempting to display the file. Please check the file and try again."; addOrReplace(new MultiLineLabel("multiLineLabel", validationMessage)); form.getNextButton().setEnabled(false); target.add(form.getWizardButtonContainer()); } catch (FileFormatException ffe) { validationMessage = "Error uploading file. You can only upload files of type: CSV (comma separated values), TXT (text), or XLS (Microsoft Excel file)"; addOrReplace(new MultiLineLabel("multiLineLabel", validationMessage)); form.getNextButton().setEnabled(false); target.add(form.getWizardButtonContainer()); } } else { validationMessage = "Step 1 is not completed properly."; addOrReplace(new MultiLineLabel("multiLineLabel", validationMessage)); form.getNextButton().setEnabled(false); target.add(form.getWizardButtonContainer()); } //TODO : finally? close io? } @Override public void onStepOutNext(AbstractWizardForm<?> form, AjaxRequestTarget target) { containerForm.getModelObject().setPreviousStepOutCompleted(true); } }